1 | #*------------------------------------------------------------------- |
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2 | * EMSO Model Library (EML) Copyright (C) 2004 - 2007 ALSOC. |
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3 | * |
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4 | * This LIBRARY is free software; you can distribute it and/or modify |
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5 | * it under the therms of the ALSOC FREE LICENSE as available at |
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6 | * http://www.enq.ufrgs.br/alsoc. |
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7 | * |
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8 | * EMSO Copyright (C) 2004 - 2007 ALSOC, original code |
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9 | * from http://www.rps.eng.br Copyright (C) 2002-2004. |
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10 | * All rights reserved. |
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11 | * |
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12 | * EMSO is distributed under the therms of the ALSOC LICENSE as |
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13 | * available at http://www.enq.ufrgs.br/alsoc. |
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14 | * |
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15 | *---------------------------------------------------------------------- |
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16 | * File containg models of columns: distillation, stripping, absorbers |
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17 | * rectifier, .... |
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18 | * |
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19 | * The default nomenclature is: |
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20 | * Type_Column_reboilertype_condensertyper |
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21 | * |
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22 | * where: |
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23 | * Type = refluxed or reboiled or section |
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24 | * Column = Stripping, Absorption, Rectifier, Distillation |
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25 | * Reboiler type (if exists) = kettle or thermosyphon |
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26 | * Condenser type (if exists) = with subccoling or without subcooling |
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27 | * |
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28 | *----------------------------------------------------------------------- |
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29 | * Author: Paula B. Staudt |
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30 | * $Id: column.mso 511 2008-05-12 17:25:33Z paula $ |
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31 | *---------------------------------------------------------------------*# |
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32 | |
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33 | using "tray"; |
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34 | using "reboiler"; |
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35 | using "condenser"; |
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36 | using "mixers_splitters/splitter"; |
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37 | using "pressure_changers/pump"; |
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38 | |
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39 | Model ControlSection |
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40 | |
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41 | ATTRIBUTES |
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42 | Pallete = false; |
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43 | Brief = "Control variables for column section."; |
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44 | |
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45 | PARAMETERS |
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46 | outer NComp as Integer (Brief="Number of components"); |
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47 | |
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48 | Tindicator_TrayNumber as Integer (Brief="Temperature Indicator in the tray"); |
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49 | Pindicator_TrayNumber as Integer (Brief="Pressure Indicator in the tray"); |
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50 | zindicator_TrayNumber as Integer (Brief="Composition Indicator in the tray"); |
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51 | zindicator_Component as Integer (Brief="Component to indicate"); |
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52 | |
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53 | end |
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54 | |
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55 | Model InitializeSection |
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56 | |
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57 | ATTRIBUTES |
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58 | Pallete = false; |
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59 | Brief = "Initial conditions for column section."; |
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60 | |
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61 | PARAMETERS |
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62 | outer NComp as Integer (Brief="Number of components"); |
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63 | |
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64 | TopTemperature as temperature (Brief = "Tray Temperature at Column Top", Default = 300); |
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65 | BottomTemperature as temperature (Brief = "Tray Temperature at Column Bottom", Default = 330); |
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66 | LevelFraction as fraction (Brief = "Tray Level Fraction", Default = 0.5); |
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67 | |
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68 | TopComposition(NComp) as fraction (Brief = "Component Molar Fraction at Column Top", Default = 0.30); |
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69 | BottomComposition(NComp) as fraction (Brief = "Component Molar Fraction at Column Bottom", Default = 0.30); |
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70 | |
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71 | end |
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72 | |
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73 | Model InitializeStage |
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74 | |
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75 | ATTRIBUTES |
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76 | Pallete = false; |
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77 | Brief = "Initial conditions for Packed column section."; |
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78 | |
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79 | PARAMETERS |
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80 | outer NComp as Integer (Brief="Number of components"); |
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81 | |
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82 | TopStageTemperature as temperature (Brief = "Tray Temperature at Column Top", Default = 300); |
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83 | BottomStageTemperature as temperature (Brief = "Tray Temperature at Column Bottom", Default = 300); |
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84 | |
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85 | TopStageComposition(NComp) as fraction (Brief = "Component Molar Fraction at Top"); |
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86 | BottomStageComposition(NComp) as fraction (Brief = "Component Molar Fraction at Bottom"); |
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87 | ColumnHoldup as positive (Brief = "Column holdup", Default=0.1); |
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88 | |
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89 | end |
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90 | |
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91 | |
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92 | Model SectionColumnBasic |
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93 | |
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94 | ATTRIBUTES |
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95 | Pallete = false; |
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96 | Brief = "Model of a basic column section."; |
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97 | Info = |
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98 | "Model of a basic column section containing a vetor of TRAYS numbered from the top-down."; |
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99 | |
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100 | PARAMETERS |
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101 | outer PP as Plugin (Brief="External Physical Properties", Type="PP"); |
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102 | outer NComp as Integer (Brief="Number of components"); |
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103 | |
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104 | NumberOfFeeds as Integer (Brief="Number of Feed Trays",Default=3,Protected=true); |
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105 | FeedTrayLocation(NumberOfFeeds) as Integer (Brief="Feed tray Location",Default=2); |
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106 | NumberOfTrays as Integer (Brief="Number of trays", Default=8); |
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107 | LiqSideTrayIndex(NumberOfTrays) as Integer (Brief="Liquid Side Tray Index", Default=0,Hidden=true); |
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108 | VapSideTrayIndex(NumberOfTrays) as Integer (Brief="Vapour Side Tray Index", Default=0,Hidden=true); |
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109 | |
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110 | LiquidSideStreamLocation as Integer (Brief="Liquid Side Stream Location", Default=2); |
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111 | VapourSideStreamLocation as Integer (Brief="Vapour Side Stream Location", Default=2); |
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112 | |
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113 | VapourFlowModel as Switcher (Valid = ["Reepmeyer", "Feehery_Fv", "Roffel_Fv", "Klingberg", "Wang_Fv", "Elgue"], Default = "Reepmeyer"); |
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114 | LiquidFlowModel as Switcher (Valid = ["Francis", "Wang_Fl", "Olsen", "Feehery_Fl", "Roffel_Fl"], Default = "Francis"); |
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115 | |
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116 | TrayDiameter as length (Brief="Tray Diameter",Default=1.600); |
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117 | TraySpacing as length (Brief="Tray Spacing",Default=0.600); |
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118 | Fraction_HoleArea as fraction (Brief="Fraction of the active area that is occupied by the holes with respect to the total tray area",Default=0.10); |
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119 | Fraction_DowncomerArea as fraction (Brief="Fraction of the downcomer area with respect to the total tray area",Default=0.20); |
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120 | WeirLength as length (Brief="Weir length", Default = 1); |
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121 | WeirHeight as length (Brief="Weir height", Default= 0.05); |
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122 | TrayLiquidPasses as positive (Brief="Number of liquid passes in the tray", Lower = 1,Default=1); |
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123 | HeatSupply as heat_rate (Brief="Rate of heat supply",Default = 0); |
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124 | AerationFraction as Real (Brief="Aeration fraction", Default = 1); |
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125 | DryPdropCoeff as Real (Brief="Dry pressure drop coefficient", Default= 0.60); |
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126 | MurphreeEff as Real (Brief="Murphree efficiency for All Trays", Default= 1); |
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127 | |
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128 | VARIABLES |
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129 | |
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130 | INITIALIZATION as InitializeSection (Brief="Column Model Initialization"); |
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131 | CONTROL as ControlSection (Brief="Column Model Control"); |
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132 | |
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133 | out TCI as control_signal (Brief="Temperature Indicator", Protected = true, PosX=1, PosY=0.73); |
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134 | out PCI as control_signal (Brief="Pressure Indicator", Protected = true, PosX=0, PosY=0.24); |
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135 | |
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136 | in LiquidInlet as stream (Brief="Liquid Inlet in the section", PosX=0.70, PosY=0); |
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137 | out VapourOutlet as vapour_stream (Brief="Vapour Outlet in the section", PosX=0.30, PosY=0); |
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138 | |
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139 | out VapourDrawOff as vapour_stream (Brief="Vapour Draw Off Port in the section", PosX=1, PosY=0.35,Protected = true); |
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140 | out LiquidDrawOff as liquid_stream (Brief="Liquid Draw Off Port in the section", PosX=1, PosY=0.65,Protected = true); |
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141 | |
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142 | TRAYS(NumberOfTrays) as tray (Brief="Number of trays in the Column Section",Protected=true); |
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143 | VapourDrawOffFlow as flow_mol (Brief="Vapour Draw Off Stream Molar Flow Rate"); |
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144 | LiquidDrawOffFlow as flow_mol (Brief="Vapour Draw Off Stream Molar Flow Rate"); |
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145 | |
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146 | in VapourInlet as stream (Brief="Vapour Inlet in the section", PosX=0.30, PosY=1); |
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147 | out LiquidOutlet as liquid_stream (Brief="Liquid Outlet in the section", PosX=0.70, PosY=1); |
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148 | |
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149 | LiquidConnector as stream (Brief="Liquid connection in the middle TRAYS", PosX=0.75, PosY=1,Hidden=true); |
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150 | VapourConnector as stream (Brief="Vapour connection in the middle TRAYS", PosX=0.55, PosY=0,Hidden=true); |
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151 | |
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152 | SET |
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153 | VapSideTrayIndex(VapourSideStreamLocation) =1; |
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154 | LiqSideTrayIndex(LiquidSideStreamLocation) =1; |
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155 | |
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156 | TRAYS.TrayDiameter_ = TrayDiameter; |
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157 | TRAYS.TraySpacing_ = TraySpacing; |
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158 | TRAYS.Fraction_HoleArea_ = Fraction_HoleArea; |
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159 | TRAYS.Fraction_DowncomerArea_ = Fraction_DowncomerArea; |
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160 | TRAYS.WeirLength_ = WeirLength; |
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161 | TRAYS.WeirHeight_ = WeirHeight; |
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162 | TRAYS.TrayLiquidPasses_ = TrayLiquidPasses; |
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163 | TRAYS.HeatSupply_ = HeatSupply; |
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164 | TRAYS.AerationFraction_ = AerationFraction; |
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165 | TRAYS.DryPdropCoeff_ = DryPdropCoeff; |
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166 | TRAYS.MurphreeEff_ = MurphreeEff; |
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167 | |
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168 | CONNECTIONS |
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169 | TRAYS([2:NumberOfTrays]).OutletVapour to TRAYS([1:NumberOfTrays-1]).InletVapour; |
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170 | TRAYS([1:NumberOfTrays-1]).OutletLiquid to TRAYS([2:NumberOfTrays]).InletLiquid; |
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171 | |
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172 | LiquidConnector to TRAYS(1).InletLiquid; |
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173 | VapourConnector to TRAYS(NumberOfTrays).InletVapour; |
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174 | |
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175 | INITIAL |
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176 | |
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177 | for i in 1:NumberOfTrays do |
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178 | |
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179 | "The initial temperature of the TRAYS" |
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180 | TRAYS(i).OutletLiquid.T = INITIALIZATION.TopTemperature+(INITIALIZATION.BottomTemperature-INITIALIZATION.TopTemperature)*((i-1)/(NumberOfTrays-1)); |
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181 | |
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182 | "The initial Level of the TRAYS" |
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183 | TRAYS(i).Level = INITIALIZATION.LevelFraction*WeirHeight; |
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184 | end |
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185 | |
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186 | for i in 1:NComp-1 do |
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187 | |
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188 | for j in 1:NumberOfTrays do |
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189 | |
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190 | "The initial composition of the TRAYS - Normalized" |
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191 | TRAYS(j).OutletLiquid.z(i) = INITIALIZATION.TopComposition(i)/sum(INITIALIZATION.TopComposition) +(INITIALIZATION.BottomComposition(i)/sum(INITIALIZATION.BottomComposition)-INITIALIZATION.TopComposition(i)/sum(INITIALIZATION.TopComposition) )*((j-1)/(NumberOfTrays-1)); |
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192 | end |
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193 | |
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194 | end |
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195 | |
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196 | EQUATIONS |
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197 | |
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198 | "Tray Temperature Indicator" |
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199 | #TCI*'K' = TRAYS(min([NumberOfTrays, CONTROL.Tindicator_TrayNumber])).OutletVapour.T; |
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200 | TCI*'K' = TRAYS(CONTROL.Tindicator_TrayNumber).OutletVapour.T; |
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201 | |
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202 | "Tray Pressure Indicator" |
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203 | #PCI*'atm' = TRAYS(min([NumberOfTrays, CONTROL.Pindicator_TrayNumber])).OutletVapour.P; |
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204 | PCI*'atm' = TRAYS(CONTROL.Pindicator_TrayNumber).OutletVapour.P; |
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205 | |
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206 | switch LiquidFlowModel |
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207 | |
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208 | case "Francis": |
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209 | TRAYS.LFlowModel = 1; |
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210 | case "Wang_Fl": |
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211 | TRAYS.LFlowModel = 2; |
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212 | |
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213 | case "Olsen": |
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214 | TRAYS.LFlowModel = 3; |
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215 | |
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216 | case "Feehery_Fl": |
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217 | TRAYS.LFlowModel = 4; |
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218 | |
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219 | case "Roffel_Fl": |
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220 | TRAYS.LFlowModel = 5; |
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221 | |
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222 | end |
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223 | |
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224 | switch VapourFlowModel |
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225 | |
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226 | case "Reepmeyer": |
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227 | TRAYS.VFlowModel = 1; |
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228 | |
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229 | case "Feehery_Fv": |
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230 | TRAYS.VFlowModel = 2; |
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231 | |
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232 | case "Roffel_Fv": |
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233 | TRAYS.VFlowModel = 3; |
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234 | |
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235 | case "Klingberg": |
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236 | TRAYS.VFlowModel = 4; |
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237 | |
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238 | case "Wang_Fv": |
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239 | TRAYS.VFlowModel = 5; |
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240 | |
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241 | case "Elgue": |
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242 | TRAYS.VFlowModel = 6; |
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243 | |
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244 | end |
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245 | |
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246 | "Liquid Inlet Flow" |
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247 | LiquidConnector.F = LiquidInlet.F; |
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248 | |
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249 | "Liquid Inlet Temperature" |
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250 | LiquidConnector.T = LiquidInlet.T; |
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251 | |
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252 | "Liquid Inlet Pressure" |
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253 | LiquidConnector.P = LiquidInlet.P; |
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254 | |
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255 | "Liquid Inlet Composition" |
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256 | LiquidConnector.z = LiquidInlet.z; |
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257 | |
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258 | "Liquid Inlet Vapour Fraction" |
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259 | LiquidConnector.v = LiquidInlet.v; |
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260 | |
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261 | "Liquid Inlet Enthalpy" |
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262 | LiquidConnector.h = LiquidInlet.h; |
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263 | |
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264 | "Vapour Inlet Flow" |
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265 | VapourConnector.F = VapourInlet.F; |
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266 | |
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267 | "Vapour Inlet Temperature" |
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268 | VapourConnector.T = VapourInlet.T; |
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269 | |
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270 | "Vapour Inlet Pressure" |
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271 | VapourConnector.P = VapourInlet.P; |
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272 | |
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273 | "Vapour Inlet Composition" |
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274 | VapourConnector.z = VapourInlet.z; |
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275 | |
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276 | "Vapour Inlet Vapour Fraction" |
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277 | VapourConnector.v = VapourInlet.v; |
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278 | |
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279 | "Vapour Inlet Enthalpy" |
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280 | VapourConnector.h = VapourInlet.h; |
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281 | |
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282 | "Liquid Outlet Flow" |
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283 | LiquidOutlet.F = TRAYS(NumberOfTrays).OutletLiquid.F; |
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284 | |
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285 | "Liquid Outlet Temperature" |
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286 | LiquidOutlet.T = TRAYS(NumberOfTrays).OutletLiquid.T; |
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287 | |
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288 | "Liquid Outlet Pressure" |
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289 | LiquidOutlet.P = TRAYS(NumberOfTrays).OutletLiquid.P; |
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290 | |
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291 | "Liquid Outlet Composition" |
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292 | LiquidOutlet.z = TRAYS(NumberOfTrays).OutletLiquid.z; |
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293 | |
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294 | "Vapour Outlet Flow" |
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295 | VapourOutlet.F = TRAYS(1).OutletVapour.F; |
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296 | |
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297 | "Vapour Outlet Temperature" |
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298 | VapourOutlet.T = TRAYS(1).OutletVapour.T; |
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299 | |
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300 | "Vapour Outlet Pressure" |
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301 | VapourOutlet.P = TRAYS(1).OutletVapour.P; |
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302 | |
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303 | "Vapour Outlet Composition" |
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304 | VapourOutlet.z = TRAYS(1).OutletVapour.z; |
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305 | |
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306 | "Vapour Draw Off Stream - Flow" |
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307 | VapourDrawOff.F*VapSideTrayIndex= TRAYS.VapourSideStream.F; |
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308 | |
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309 | "Vapour Draw Off Stream - Temperature" |
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310 | VapourDrawOff.T = TRAYS(VapourSideStreamLocation).VapourSideStream.T; |
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311 | |
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312 | "Vapour Draw Off Stream - Pressure" |
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313 | VapourDrawOff.P = TRAYS(VapourSideStreamLocation).VapourSideStream.P; |
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314 | |
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315 | "Vapour Draw Off Stream - Composition" |
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316 | VapourDrawOff.z = TRAYS(VapourSideStreamLocation).VapourSideStream.z; |
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317 | |
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318 | "Vapour Draw Off Stream" |
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319 | VapourDrawOffFlow = VapourDrawOff.F; |
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320 | |
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321 | "Liquid Draw Off Stream - Flow" |
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322 | LiquidDrawOff.F*LiqSideTrayIndex= TRAYS.LiquidSideStream.F; |
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323 | |
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324 | "Liquid Draw Off Stream - Temperature" |
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325 | LiquidDrawOff.T = TRAYS(LiquidSideStreamLocation).LiquidSideStream.T; |
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326 | |
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327 | "Liquid Draw Off Stream - Pressure" |
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328 | LiquidDrawOff.P = TRAYS(LiquidSideStreamLocation).LiquidSideStream.P; |
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329 | |
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330 | "Liquid Draw Off Stream - Composition" |
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331 | LiquidDrawOff.z = TRAYS(LiquidSideStreamLocation).LiquidSideStream.z; |
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332 | |
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333 | "Liquid Draw Off Stream" |
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334 | LiquidDrawOffFlow = LiquidDrawOff.F; |
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335 | |
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336 | end |
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337 | |
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338 | Model Section_Column as SectionColumnBasic |
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339 | |
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340 | ATTRIBUTES |
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341 | Pallete = true; |
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342 | Icon = "icon/SectionColumn"; |
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343 | Brief = "Model of a column section."; |
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344 | Info = |
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345 | "== Model of a column section containing == |
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346 | * NumberOfTrays TRAYS. |
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347 | * One Feed Inlet. |
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348 | |
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349 | == Specify == |
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350 | * the feed stream of each tray (Inlet); |
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351 | * the Murphree eficiency for each tray Emv; |
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352 | * the InletLiquid stream of the top tray; |
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353 | * the InletVapour stream of the bottom tray. |
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354 | |
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355 | == Initial Conditions == |
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356 | * the TRAYS temperature (OutletLiquid.T); |
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357 | * the TRAYS liquid level (Level) OR the TRAYS liquid flow (OutletLiquid.F); |
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358 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each tray. |
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359 | "; |
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360 | |
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361 | SET |
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362 | NumberOfFeeds = 1; |
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363 | |
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364 | VARIABLES |
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365 | |
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366 | in FeedTray as stream (Brief="Feed stream", PosX=0, PosY=0.55); |
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367 | |
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368 | EQUATIONS |
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369 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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370 | # Equating Feed Tray Variables to Trays Variables |
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371 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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372 | for i in 1:NumberOfTrays do |
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373 | |
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374 | if i equal FeedTrayLocation(1) then |
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375 | |
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376 | "FeedTrayTop Inlet Flow" |
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377 | FeedTray.F= TRAYS(i).Inlet.F; |
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378 | |
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379 | "FeedTrayTop Inlet Temperature" |
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380 | FeedTray.T = TRAYS(i).Inlet.T; |
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381 | |
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382 | "FeedTrayTop Inlet Pressure" |
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383 | FeedTray.P = TRAYS(i).Inlet.P; |
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384 | |
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385 | "FeedTrayTop Inlet Composition" |
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386 | FeedTray.z = TRAYS(i).Inlet.z; |
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387 | |
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388 | "FeedTrayTop Inlet Vapour Fraction" |
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389 | FeedTray.v = TRAYS(i).Inlet.v; |
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390 | |
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391 | "FeedTrayTop Inlet Enthalpy" |
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392 | FeedTray.h = TRAYS(i).Inlet.h; |
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393 | |
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394 | else |
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395 | |
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396 | "Inlet Tray - Flow Sealed" |
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397 | 0*'mol/h'= TRAYS(i).Inlet.F; |
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398 | |
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399 | "Inlet Tray - Temperature" |
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400 | 300*'K' = TRAYS(i).Inlet.T; |
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401 | |
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402 | "Inlet Tray - Pressure" |
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403 | 1*'atm' = TRAYS(i).Inlet.P; |
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404 | |
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405 | "Inlet Tray - Composition" |
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406 | 0.1 = TRAYS(i).Inlet.z; |
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407 | |
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408 | "Inlet Tray - Vapour Fraction" |
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409 | 0 = TRAYS(i).Inlet.v; |
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410 | |
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411 | "Inlet Tray - Enthalpy" |
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412 | 0*'J/mol' = TRAYS(i).Inlet.h; |
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413 | |
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414 | end |
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415 | |
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416 | end |
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417 | |
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418 | end |
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419 | |
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420 | Model Section_Column2 as SectionColumnBasic |
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421 | |
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422 | ATTRIBUTES |
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423 | Pallete = true; |
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424 | Icon = "icon/SectionColumn"; |
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425 | Brief = "Model of a column section."; |
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426 | Info = |
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427 | "== Model of a column section containing == |
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428 | * NumberOfTrays TRAYS. |
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429 | * Two Feed Inlets. |
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430 | |
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431 | == Specify == |
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432 | * the feed stream of each tray (Inlet); |
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433 | * the Murphree eficiency for each tray Emv; |
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434 | * the InletLiquid stream of the top tray; |
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435 | * the InletVapour stream of the bottom tray. |
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436 | |
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437 | == Initial Conditions == |
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438 | * the TRAYS temperature (OutletLiquid.T); |
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439 | * the TRAYS liquid level (Level) OR the TRAYS liquid flow (OutletLiquid.F); |
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440 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each tray. |
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441 | "; |
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442 | |
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443 | SET |
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444 | NumberOfFeeds = 2; |
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445 | |
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446 | VARIABLES |
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447 | |
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448 | in FeedTrayOne as stream (Brief="Feed stream", PosX=0, PosY=0.45); |
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449 | in FeedTrayTwo as stream (Brief="Feed stream", PosX=0, PosY=0.65); |
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450 | |
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451 | EQUATIONS |
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452 | |
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453 | for i in 1:NumberOfTrays do |
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454 | |
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455 | if i equal FeedTrayLocation(1) then |
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456 | |
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457 | "FeedTrayTop Inlet Flow" |
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458 | FeedTrayOne.F= TRAYS(i).Inlet.F; |
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459 | |
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460 | "FeedTrayTop Inlet Temperature" |
---|
461 | FeedTrayOne.T = TRAYS(i).Inlet.T; |
---|
462 | |
---|
463 | "FeedTrayTop Inlet Pressure" |
---|
464 | FeedTrayOne.P = TRAYS(i).Inlet.P; |
---|
465 | |
---|
466 | "FeedTrayTop Inlet Composition" |
---|
467 | FeedTrayOne.z = TRAYS(i).Inlet.z; |
---|
468 | |
---|
469 | "FeedTrayTop Inlet Vapour Fraction" |
---|
470 | FeedTrayOne.v = TRAYS(i).Inlet.v; |
---|
471 | |
---|
472 | "FeedTrayTop Inlet Enthalpy" |
---|
473 | FeedTrayOne.h = TRAYS(i).Inlet.h; |
---|
474 | |
---|
475 | else if i equal FeedTrayLocation(2) then |
---|
476 | |
---|
477 | "FeedTrayBottom Inlet Flow" |
---|
478 | FeedTrayTwo.F= TRAYS(i).Inlet.F; |
---|
479 | |
---|
480 | "FeedTrayBottom Inlet Temperature" |
---|
481 | FeedTrayTwo.T = TRAYS(i).Inlet.T; |
---|
482 | |
---|
483 | "FeedTrayBottom Inlet Pressure" |
---|
484 | FeedTrayTwo.P = TRAYS(i).Inlet.P; |
---|
485 | |
---|
486 | "FeedTrayBottom Inlet Composition" |
---|
487 | FeedTrayTwo.z = TRAYS(i).Inlet.z; |
---|
488 | |
---|
489 | "FeedTrayBottom Inlet Vapour Fraction" |
---|
490 | FeedTrayTwo.v = TRAYS(i).Inlet.v; |
---|
491 | |
---|
492 | "FeedTrayBottom Inlet Enthalpy" |
---|
493 | FeedTrayTwo.h = TRAYS(i).Inlet.h; |
---|
494 | |
---|
495 | else |
---|
496 | |
---|
497 | "Inlet Tray - Flow Sealed" |
---|
498 | 0*'mol/h'= TRAYS(i).Inlet.F; |
---|
499 | |
---|
500 | "Inlet Tray - Temperature" |
---|
501 | 300*'K' = TRAYS(i).Inlet.T; |
---|
502 | |
---|
503 | "Inlet Tray - Pressure" |
---|
504 | 1*'atm' = TRAYS(i).Inlet.P; |
---|
505 | |
---|
506 | "Inlet Tray - Composition" |
---|
507 | 0.1 = TRAYS(i).Inlet.z; |
---|
508 | |
---|
509 | "Inlet Tray - Vapour Fraction" |
---|
510 | 0 = TRAYS(i).Inlet.v; |
---|
511 | |
---|
512 | "Inlet Tray - Enthalpy" |
---|
513 | 0*'J/mol' = TRAYS(i).Inlet.h; |
---|
514 | |
---|
515 | end |
---|
516 | |
---|
517 | end |
---|
518 | |
---|
519 | end |
---|
520 | |
---|
521 | end |
---|
522 | |
---|
523 | Model Section_Column3 as SectionColumnBasic |
---|
524 | |
---|
525 | ATTRIBUTES |
---|
526 | Pallete = true; |
---|
527 | Icon = "icon/SectionColumn"; |
---|
528 | Brief = "Model of a column section."; |
---|
529 | Info = |
---|
530 | "== Model of a column section containing == |
---|
531 | * NumberOfTrays TRAYS. |
---|
532 | * Three Feed Inlets. |
---|
533 | |
---|
534 | == Specify == |
---|
535 | * the feed stream of each tray (Inlet); |
---|
536 | * the Murphree eficiency for each tray Emv; |
---|
537 | * the InletLiquid stream of the top tray; |
---|
538 | * the InletVapour stream of the bottom tray. |
---|
539 | |
---|
540 | == Initial Conditions == |
---|
541 | * the TRAYS temperature (OutletLiquid.T); |
---|
542 | * the TRAYS liquid level (Level) OR the TRAYS liquid flow (OutletLiquid.F); |
---|
543 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each tray. |
---|
544 | "; |
---|
545 | |
---|
546 | SET |
---|
547 | NumberOfFeeds = 3; |
---|
548 | |
---|
549 | VARIABLES |
---|
550 | |
---|
551 | in FeedTrayOne as stream (Brief="Feed stream", PosX=0, PosY=0.45); |
---|
552 | in FeedTrayTwo as stream (Brief="Feed stream", PosX=0, PosY=0.65); |
---|
553 | in FeedTrayThree as stream (Brief="Feed stream", PosX=0, PosY=0.85); |
---|
554 | |
---|
555 | EQUATIONS |
---|
556 | |
---|
557 | for i in 1:NumberOfTrays do |
---|
558 | |
---|
559 | if i equal FeedTrayLocation(1) then |
---|
560 | |
---|
561 | "FeedTrayTop Inlet Flow" |
---|
562 | FeedTrayOne.F= TRAYS(i).Inlet.F; |
---|
563 | |
---|
564 | "FeedTrayTop Inlet Temperature" |
---|
565 | FeedTrayOne.T = TRAYS(i).Inlet.T; |
---|
566 | |
---|
567 | "FeedTrayTop Inlet Pressure" |
---|
568 | FeedTrayOne.P = TRAYS(i).Inlet.P; |
---|
569 | |
---|
570 | "FeedTrayTop Inlet Composition" |
---|
571 | FeedTrayOne.z = TRAYS(i).Inlet.z; |
---|
572 | |
---|
573 | "FeedTrayTop Inlet Vapour Fraction" |
---|
574 | FeedTrayOne.v = TRAYS(i).Inlet.v; |
---|
575 | |
---|
576 | "FeedTrayTop Inlet Enthalpy" |
---|
577 | FeedTrayOne.h = TRAYS(i).Inlet.h; |
---|
578 | |
---|
579 | else if i equal FeedTrayLocation(2) then |
---|
580 | |
---|
581 | "FeedTrayBottom Inlet Flow" |
---|
582 | FeedTrayTwo.F= TRAYS(i).Inlet.F; |
---|
583 | |
---|
584 | "FeedTrayBottom Inlet Temperature" |
---|
585 | FeedTrayTwo.T = TRAYS(i).Inlet.T; |
---|
586 | |
---|
587 | "FeedTrayBottom Inlet Pressure" |
---|
588 | FeedTrayTwo.P = TRAYS(i).Inlet.P; |
---|
589 | |
---|
590 | "FeedTrayBottom Inlet Composition" |
---|
591 | FeedTrayTwo.z = TRAYS(i).Inlet.z; |
---|
592 | |
---|
593 | "FeedTrayBottom Inlet Vapour Fraction" |
---|
594 | FeedTrayTwo.v = TRAYS(i).Inlet.v; |
---|
595 | |
---|
596 | "FeedTrayBottom Inlet Enthalpy" |
---|
597 | FeedTrayTwo.h = TRAYS(i).Inlet.h; |
---|
598 | |
---|
599 | else if i equal FeedTrayLocation(3) then |
---|
600 | |
---|
601 | "FeedTrayBottom Inlet Flow" |
---|
602 | FeedTrayThree.F= TRAYS(i).Inlet.F; |
---|
603 | |
---|
604 | "FeedTrayBottom Inlet Temperature" |
---|
605 | FeedTrayThree.T = TRAYS(i).Inlet.T; |
---|
606 | |
---|
607 | "FeedTrayBottom Inlet Pressure" |
---|
608 | FeedTrayThree.P = TRAYS(i).Inlet.P; |
---|
609 | |
---|
610 | "FeedTrayBottom Inlet Composition" |
---|
611 | FeedTrayThree.z = TRAYS(i).Inlet.z; |
---|
612 | |
---|
613 | "FeedTrayBottom Inlet Vapour Fraction" |
---|
614 | FeedTrayThree.v = TRAYS(i).Inlet.v; |
---|
615 | |
---|
616 | "FeedTrayBottom Inlet Enthalpy" |
---|
617 | FeedTrayThree.h = TRAYS(i).Inlet.h; |
---|
618 | |
---|
619 | else |
---|
620 | |
---|
621 | "Inlet Tray - Flow Sealed" |
---|
622 | 0*'mol/h'= TRAYS(i).Inlet.F; |
---|
623 | |
---|
624 | "Inlet Tray - Temperature" |
---|
625 | 300*'K' = TRAYS(i).Inlet.T; |
---|
626 | |
---|
627 | "Inlet Tray - Pressure" |
---|
628 | 1*'atm' = TRAYS(i).Inlet.P; |
---|
629 | |
---|
630 | "Inlet Tray - Composition" |
---|
631 | 0.1 = TRAYS(i).Inlet.z; |
---|
632 | |
---|
633 | "Inlet Tray - Vapour Fraction" |
---|
634 | 0 = TRAYS(i).Inlet.v; |
---|
635 | |
---|
636 | "Inlet Tray - Enthalpy" |
---|
637 | 0*'J/mol' = TRAYS(i).Inlet.h; |
---|
638 | |
---|
639 | end |
---|
640 | |
---|
641 | end |
---|
642 | |
---|
643 | end |
---|
644 | |
---|
645 | end |
---|
646 | |
---|
647 | end |
---|
648 | |
---|
649 | |
---|
650 | Model Packed_Section_ColumnBasic |
---|
651 | |
---|
652 | ATTRIBUTES |
---|
653 | Pallete = false; |
---|
654 | Icon = "icon/PackedSectionColumn"; |
---|
655 | Brief = "Model of a packed column section."; |
---|
656 | Info = |
---|
657 | "== Model of a packed column section containing == |
---|
658 | * NStages theoretical stages. |
---|
659 | |
---|
660 | == Specify == |
---|
661 | * the feed stream of each tray (Inlet); |
---|
662 | * the InletLiquid stream of the top tray; |
---|
663 | * the InletVapour stream of the bottom tray; |
---|
664 | * the total pressure drop (dP) of the section. |
---|
665 | |
---|
666 | == Initial Conditions == |
---|
667 | * the stages temperature (OutletLiquid.T); |
---|
668 | * the stages liquid holdup; |
---|
669 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each tray. |
---|
670 | "; |
---|
671 | |
---|
672 | PARAMETERS |
---|
673 | |
---|
674 | outer PP as Plugin (Brief = "External Physical Properties", Type="PP"); |
---|
675 | outer NComp as Integer (Brief="Number of components",Protected=true); |
---|
676 | |
---|
677 | |
---|
678 | NumberOfFeeds as Integer (Brief="Number of Feed Stages",Default=3,Protected=true); |
---|
679 | NumberOfStages as Integer (Brief="Number of Stages", Default=3); |
---|
680 | FeedStageLocation(NumberOfFeeds) as Integer (Brief="Feed Stage Location",Default=2); |
---|
681 | |
---|
682 | PackingHeight as length (Brief="Height of packing"); |
---|
683 | HeatSupply as heat_rate (Brief="Rate of heat supply"); |
---|
684 | ColumnDiameter as length (Brief="Column diameter"); |
---|
685 | VoidFraction as Real (Brief="Void fraction of packing, (m^3 void space/m^3 packed bed)"); |
---|
686 | ResistanceCoeff as positive (Brief="Resistance coefficient on the liquid load", Default=1); |
---|
687 | AreaPerPackingVol as Real (Brief="surface area per packing volume", Unit='m^2/m^3'); |
---|
688 | HETP as length (Brief="The Height Equivalent to a Theoretical Plate",Protected=true); |
---|
689 | |
---|
690 | VARIABLES |
---|
691 | |
---|
692 | INITIALIZATION as InitializeStage (Brief = "Column Model Initialization"); |
---|
693 | CONTROL as ControlSection (Brief="Column Model Control"); |
---|
694 | |
---|
695 | out TCI as control_signal (Brief="Temperature Indicator", Protected = true, PosX=1, PosY=0.73); |
---|
696 | out PCI as control_signal (Brief="Pressure Indicator", Protected = true, PosX=0, PosY=0.24); |
---|
697 | out zCI as control_signal (Brief="Composition control", Protected = true, PosX=1, PosY=0.8); |
---|
698 | |
---|
699 | in LiquidInlet as stream (Brief="Liquid Inlet in the section", PosX=0.70, PosY=0,Protected=true); |
---|
700 | out VapourOutlet as vapour_stream (Brief="Vapour Outlet in the section", PosX=0.30, PosY=0,Protected=true); |
---|
701 | |
---|
702 | in VapourInlet as stream (Brief="Vapour Inlet in the section", PosX=0.30, PosY=1,Protected=true); |
---|
703 | out LiquidOutlet as liquid_stream (Brief="Liquid Outlet in the section", PosX=0.70, PosY=1,Protected=true); |
---|
704 | |
---|
705 | LiquidConnector as stream (Brief="Liquid connection at the middle STAGES", PosX=0.75, PosY=1,Hidden=true); |
---|
706 | VapourConnector as stream (Brief="Vapour connection at the middle STAGES", PosX=0.55, PosY=0,Hidden=true); |
---|
707 | |
---|
708 | STAGES(NumberOfStages) as packedStage (Brief="Column Stages",Protected=true); |
---|
709 | PressureDrop as pressure (Brief="Column Pressure Drop", Protected=true); |
---|
710 | |
---|
711 | SET |
---|
712 | |
---|
713 | STAGES.Number_Stages = NumberOfStages; |
---|
714 | STAGES.HeightOfPacking = PackingHeight; |
---|
715 | STAGES.HeatOnStage = HeatSupply; |
---|
716 | STAGES.ColumnInternalDiameter = ColumnDiameter; |
---|
717 | STAGES.PackingVoidFraction = VoidFraction; |
---|
718 | STAGES.LiquidResistanceCoeff = ResistanceCoeff ; |
---|
719 | STAGES.AreaPerPackingVolume = AreaPerPackingVol; |
---|
720 | |
---|
721 | HETP = PackingHeight/NumberOfStages; |
---|
722 | |
---|
723 | CONNECTIONS |
---|
724 | |
---|
725 | STAGES([2:NumberOfStages]).OutletVapour to STAGES([1:NumberOfStages-1]).InletVapour; |
---|
726 | STAGES([1:NumberOfStages-1]).OutletLiquid to STAGES([2:NumberOfStages]).InletLiquid; |
---|
727 | LiquidConnector to STAGES(1).InletLiquid; |
---|
728 | VapourConnector to STAGES(NumberOfStages).InletVapour; |
---|
729 | |
---|
730 | EQUATIONS |
---|
731 | |
---|
732 | LiquidConnector.F= LiquidInlet.F; |
---|
733 | LiquidConnector.T = LiquidInlet.T; |
---|
734 | LiquidConnector.P = LiquidInlet.P; |
---|
735 | LiquidConnector.z = LiquidInlet.z; |
---|
736 | LiquidConnector.v = LiquidInlet.v; |
---|
737 | LiquidConnector.h = LiquidInlet.h; |
---|
738 | |
---|
739 | VapourConnector.F= VapourInlet.F; |
---|
740 | VapourConnector.T = VapourInlet.T; |
---|
741 | VapourConnector.P = VapourInlet.P; |
---|
742 | VapourConnector.z = VapourInlet.z; |
---|
743 | VapourConnector.v = VapourInlet.v; |
---|
744 | VapourConnector.h = VapourInlet.h; |
---|
745 | |
---|
746 | LiquidOutlet.F= STAGES(NumberOfStages).OutletLiquid.F; |
---|
747 | LiquidOutlet.T = STAGES(NumberOfStages).OutletLiquid.T; |
---|
748 | LiquidOutlet.P = STAGES(NumberOfStages).OutletLiquid.P; |
---|
749 | LiquidOutlet.z = STAGES(NumberOfStages).OutletLiquid.z; |
---|
750 | |
---|
751 | VapourOutlet.F= STAGES(1).OutletVapour.F; |
---|
752 | VapourOutlet.T = STAGES(1).OutletVapour.T; |
---|
753 | VapourOutlet.P = STAGES(1).OutletVapour.P; |
---|
754 | VapourOutlet.z = STAGES(1).OutletVapour.z; |
---|
755 | |
---|
756 | "Tray Temperature Indicator" |
---|
757 | #TCI*'K' = TRAYS(min([NumberOfTrays, CONTROL.Tindicator_TrayNumber])).OutletVapour.T; |
---|
758 | TCI*'K' = STAGES(CONTROL.Tindicator_TrayNumber).OutletVapour.T; |
---|
759 | |
---|
760 | "Tray Pressure Indicator" |
---|
761 | #PCI*'atm' = TRAYS(min([NumberOfTrays, CONTROL.Pindicator_TrayNumber])).OutletVapour.P; |
---|
762 | PCI*'atm' = STAGES(CONTROL.Pindicator_TrayNumber).OutletVapour.P; |
---|
763 | |
---|
764 | "Tray Composition Indicator" |
---|
765 | #zCI * .000001 = STAGES(CONTROL.zindicator_TrayNumber).OutletVapour.z(CONTROL.zindicator_Component) * STAGES(CONTROL.zindicator_TrayNumber).Mw(CONTROL.zindicator_Component) ; #/sum(STAGES(CONTROL.zindicator_TrayNumber).Mw*STAGES(CONTROL.zindicator_TrayNumber).OutletLiquid.z); |
---|
766 | zCI * 1e-6 = STAGES(CONTROL.zindicator_TrayNumber).OutletLiquid.z(CONTROL.zindicator_Component) * STAGES(CONTROL.zindicator_TrayNumber).Mw(CONTROL.zindicator_Component) / sum(STAGES(CONTROL.zindicator_TrayNumber).Mw*STAGES(CONTROL.zindicator_TrayNumber).OutletLiquid.z); |
---|
767 | |
---|
768 | "PressureDrop" |
---|
769 | PressureDrop = STAGES(NumberOfStages).OutletLiquid.P - STAGES(1).OutletLiquid.P; |
---|
770 | |
---|
771 | INITIAL |
---|
772 | |
---|
773 | for i in 1:NumberOfStages do |
---|
774 | |
---|
775 | "The initial temperature of the STAGES" |
---|
776 | STAGES(i).OutletLiquid.T = INITIALIZATION.TopStageTemperature+(INITIALIZATION.BottomStageTemperature-INITIALIZATION.TopStageTemperature)*((i-1)/(NumberOfStages-1)); |
---|
777 | |
---|
778 | "The Column Holdup of the STAGES" |
---|
779 | STAGES(i).hl = INITIALIZATION.ColumnHoldup; |
---|
780 | |
---|
781 | end |
---|
782 | |
---|
783 | for i in 1:NComp-1 do |
---|
784 | |
---|
785 | for j in 1:NumberOfStages do |
---|
786 | |
---|
787 | "The initial composition of the TRAYS" |
---|
788 | STAGES(j).OutletLiquid.z(i) = INITIALIZATION.TopStageComposition(i)/sum(INITIALIZATION.TopStageComposition) +(INITIALIZATION.BottomStageComposition(i)/sum(INITIALIZATION.BottomStageComposition)-INITIALIZATION.TopStageComposition(i)/sum(INITIALIZATION.TopStageComposition) )*((j-1)/(NumberOfStages-1)); |
---|
789 | |
---|
790 | end |
---|
791 | |
---|
792 | end |
---|
793 | |
---|
794 | end |
---|
795 | |
---|
796 | Model Packed_Section_Column as Packed_Section_ColumnBasic |
---|
797 | |
---|
798 | ATTRIBUTES |
---|
799 | Pallete = true; |
---|
800 | Icon = "icon/PackedSectionColumn"; |
---|
801 | Brief = "Model of a packed column section."; |
---|
802 | Info = |
---|
803 | "== Model of a packed column section containing == |
---|
804 | * NStages theoretical stages. |
---|
805 | |
---|
806 | == Specify == |
---|
807 | * the feed stream of each tray (Inlet); |
---|
808 | * the InletLiquid stream of the top tray; |
---|
809 | * the InletVapour stream of the bottom tray; |
---|
810 | * the total pressure drop (dP) of the section. |
---|
811 | |
---|
812 | == Initial Conditions == |
---|
813 | * the stages temperature (OutletLiquid.T); |
---|
814 | * the stages liquid holdup; |
---|
815 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each tray. |
---|
816 | "; |
---|
817 | |
---|
818 | SET |
---|
819 | NumberOfFeeds = 1; |
---|
820 | |
---|
821 | VARIABLES |
---|
822 | |
---|
823 | in FeedStage as stream (Brief="Feed stream", PosX=0, PosY=0.55); |
---|
824 | |
---|
825 | EQUATIONS |
---|
826 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
827 | # Equating Feed Tray Variables to Trays Variables |
---|
828 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
829 | for i in 1:NumberOfStages do |
---|
830 | |
---|
831 | if i equal FeedStageLocation(1) then |
---|
832 | |
---|
833 | "FeedTrayTop Inlet Flow" |
---|
834 | FeedStage.F= STAGES(i).Inlet.F; |
---|
835 | |
---|
836 | "FeedTrayTop Inlet Temperature" |
---|
837 | FeedStage.T = STAGES(i).Inlet.T; |
---|
838 | |
---|
839 | "FeedTrayTop Inlet Pressure" |
---|
840 | FeedStage.P = STAGES(i).Inlet.P; |
---|
841 | |
---|
842 | "FeedTrayTop Inlet Composition" |
---|
843 | FeedStage.z = STAGES(i).Inlet.z; |
---|
844 | |
---|
845 | "FeedTrayTop Inlet Vapour Fraction" |
---|
846 | FeedStage.v = STAGES(i).Inlet.v; |
---|
847 | |
---|
848 | "FeedTrayTop Inlet Enthalpy" |
---|
849 | FeedStage.h = STAGES(i).Inlet.h; |
---|
850 | |
---|
851 | else |
---|
852 | |
---|
853 | "Inlet Tray - Flow Sealed" |
---|
854 | 0*'mol/h'= STAGES(i).Inlet.F; |
---|
855 | |
---|
856 | "Inlet Tray - Temperature" |
---|
857 | 300*'K' = STAGES(i).Inlet.T; |
---|
858 | |
---|
859 | "Inlet Tray - Pressure" |
---|
860 | 1*'atm' = STAGES(i).Inlet.P; |
---|
861 | |
---|
862 | "Inlet Tray - Composition" |
---|
863 | 0.1 = STAGES(i).Inlet.z; |
---|
864 | |
---|
865 | "Inlet Tray - Vapour Fraction" |
---|
866 | 0 = STAGES(i).Inlet.v; |
---|
867 | |
---|
868 | "Inlet Tray - Enthalpy" |
---|
869 | 0*'J/mol' = STAGES(i).Inlet.h; |
---|
870 | |
---|
871 | end |
---|
872 | |
---|
873 | end |
---|
874 | |
---|
875 | end |
---|
876 | |
---|
877 | Model Packed_Section_Column2 as Packed_Section_ColumnBasic |
---|
878 | |
---|
879 | ATTRIBUTES |
---|
880 | Pallete = true; |
---|
881 | Icon = "icon/PackedSectionColumn"; |
---|
882 | Brief = "Model of a packed column section."; |
---|
883 | Info = |
---|
884 | "== Model of a packed column section containing == |
---|
885 | * NStages theoretical stages. |
---|
886 | |
---|
887 | == Specify == |
---|
888 | * the feed stream of each tray (Inlet); |
---|
889 | * the InletLiquid stream of the top tray; |
---|
890 | * the InletVapour stream of the bottom tray; |
---|
891 | * the total pressure drop (dP) of the section. |
---|
892 | |
---|
893 | == Initial Conditions == |
---|
894 | * the stages temperature (OutletLiquid.T); |
---|
895 | * the stages liquid holdup; |
---|
896 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each tray. |
---|
897 | "; |
---|
898 | |
---|
899 | SET |
---|
900 | NumberOfFeeds = 2; |
---|
901 | |
---|
902 | VARIABLES |
---|
903 | |
---|
904 | in FeedStageOne as stream (Brief="Feed stream", PosX=0, PosY=0.45); |
---|
905 | in FeedStageTwo as stream (Brief="Feed stream", PosX=0, PosY=0.65); |
---|
906 | |
---|
907 | EQUATIONS |
---|
908 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
909 | # Equating Feed Stage Variables to Stages Variables |
---|
910 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
911 | |
---|
912 | for i in 1:NumberOfStages do |
---|
913 | |
---|
914 | if i equal FeedStageLocation(1) then |
---|
915 | |
---|
916 | "FeedTrayTop Inlet Flow" |
---|
917 | FeedStageOne.F= STAGES(i).Inlet.F; |
---|
918 | |
---|
919 | "FeedTrayTop Inlet Temperature" |
---|
920 | FeedStageOne.T = STAGES(i).Inlet.T; |
---|
921 | |
---|
922 | "FeedTrayTop Inlet Pressure" |
---|
923 | FeedStageOne.P = STAGES(i).Inlet.P; |
---|
924 | |
---|
925 | "FeedTrayTop Inlet Composition" |
---|
926 | FeedStageOne.z = STAGES(i).Inlet.z; |
---|
927 | |
---|
928 | "FeedTrayTop Inlet Vapour Fraction" |
---|
929 | FeedStageOne.v = STAGES(i).Inlet.v; |
---|
930 | |
---|
931 | "FeedTrayTop Inlet Enthalpy" |
---|
932 | FeedStageOne.h = STAGES(i).Inlet.h; |
---|
933 | |
---|
934 | else if i equal FeedStageLocation(2) then |
---|
935 | |
---|
936 | "FeedTrayBottom Inlet Flow" |
---|
937 | FeedStageTwo.F= STAGES(i).Inlet.F; |
---|
938 | |
---|
939 | "FeedTrayBottom Inlet Temperature" |
---|
940 | FeedStageTwo.T = STAGES(i).Inlet.T; |
---|
941 | |
---|
942 | "FeedTrayBottom Inlet Pressure" |
---|
943 | FeedStageTwo.P = STAGES(i).Inlet.P; |
---|
944 | |
---|
945 | "FeedTrayBottom Inlet Composition" |
---|
946 | FeedStageTwo.z = STAGES(i).Inlet.z; |
---|
947 | |
---|
948 | "FeedTrayBottom Inlet Vapour Fraction" |
---|
949 | FeedStageTwo.v = STAGES(i).Inlet.v; |
---|
950 | |
---|
951 | "FeedTrayBottom Inlet Enthalpy" |
---|
952 | FeedStageTwo.h = STAGES(i).Inlet.h; |
---|
953 | |
---|
954 | else |
---|
955 | |
---|
956 | "Inlet Tray - Flow Sealed" |
---|
957 | 0*'mol/h'= STAGES(i).Inlet.F; |
---|
958 | |
---|
959 | "Inlet Tray - Temperature" |
---|
960 | 300*'K' = STAGES(i).Inlet.T; |
---|
961 | |
---|
962 | "Inlet Tray - Pressure" |
---|
963 | 1*'atm' = STAGES(i).Inlet.P; |
---|
964 | |
---|
965 | "Inlet Tray - Composition" |
---|
966 | 0.1 = STAGES(i).Inlet.z; |
---|
967 | |
---|
968 | "Inlet Tray - Vapour Fraction" |
---|
969 | 0 = STAGES(i).Inlet.v; |
---|
970 | |
---|
971 | "Inlet Tray - Enthalpy" |
---|
972 | 0*'J/mol' = STAGES(i).Inlet.h; |
---|
973 | |
---|
974 | end |
---|
975 | |
---|
976 | end |
---|
977 | |
---|
978 | end |
---|
979 | |
---|
980 | end |
---|
981 | |
---|
982 | |
---|
983 | # Models to be revised |
---|
984 | #* |
---|
985 | Model ColumnBasic |
---|
986 | |
---|
987 | ATTRIBUTES |
---|
988 | Pallete = false; |
---|
989 | Brief = "Model of a basic column."; |
---|
990 | Info = |
---|
991 | "Model of a basic column containing a vetor of TRAYS numbered from the top-down."; |
---|
992 | |
---|
993 | PARAMETERS |
---|
994 | outer PP as Plugin (Brief="External Physical Properties", Type="PP"); |
---|
995 | outer NComp as Integer (Brief="Number of components"); |
---|
996 | |
---|
997 | NumberOfFeeds as Integer (Brief="Number of Feed Trays",Default=3,Protected=true); |
---|
998 | FeedTrayLocation(NumberOfFeeds) as Integer (Brief="Feed tray Location",Default=2); |
---|
999 | NumberOfTrays as Integer (Brief="Number of trays", Default=8); |
---|
1000 | LiqSideTrayIndex(NumberOfTrays) as Integer (Brief="Liquid Side Tray Index", Default=0,Hidden=true); |
---|
1001 | VapSideTrayIndex(NumberOfTrays) as Integer (Brief="Vapour Side Tray Index", Default=0,Hidden=true); |
---|
1002 | LiquidSideStreamLocation as Integer (Brief="Liquid Side Stream Location", Default=2); |
---|
1003 | VapourSideStreamLocation as Integer (Brief="Vapour Side Stream Location", Default=2); |
---|
1004 | g as acceleration (Brief="Gravity Acceleration",Default=9.81,Hidden=true); |
---|
1005 | Mw(NComp) as molweight (Brief="Component Mol Weight",Hidden=true); |
---|
1006 | |
---|
1007 | VapourFlowModel as Switcher (Valid = ["Reepmeyer", "Feehery_Fv", "Roffel_Fv", "Klingberg", "Wang_Fv", "Elgue"], Default = "Reepmeyer"); |
---|
1008 | LiquidFlowModel as Switcher (Valid = ["default", "Wang_Fl", "Olsen", "Feehery_Fl", "Roffel_Fl"], Default = "default"); |
---|
1009 | |
---|
1010 | TrayDiameter as length (Brief="Tray Diameter",Default=1.600); |
---|
1011 | TraySpacing as length (Brief="Tray Spacing",Default=0.600); |
---|
1012 | Fraction_HoleArea as fraction (Brief="Fraction of the active area that is occupied by the holes with respect to the total tray area",Default=0.10); |
---|
1013 | Fraction_DowncomerArea as fraction (Brief="Fraction of the downcomer area with respect to the total tray area",Default=0.20); |
---|
1014 | WeirLength as length (Brief="Weir length", Default = 1); |
---|
1015 | WeirHeight as length (Brief="Weir height", Default= 0.05); |
---|
1016 | TrayLiquidPasses as positive (Brief="Number of liquid passes in the tray", Lower = 1,Default=1); |
---|
1017 | HeatSupply as heat_rate (Brief="Rate of heat supply",Default = 0); |
---|
1018 | AerationFraction as Real (Brief="Aeration fraction", Default = 1); |
---|
1019 | DryPdropCoeff as Real (Brief="Dry pressure drop coefficient", Default= 0.60); |
---|
1020 | |
---|
1021 | PlateArea as area (Brief="Plate area = Atray - Adowncomer",Protected=true); |
---|
1022 | TrayVolume as volume (Brief="Total Volume of the tray",Protected=true); |
---|
1023 | HolesArea as area (Brief="Total holes area",Protected=true); |
---|
1024 | |
---|
1025 | FeeheryCoeff as Real (Brief="Feeherys correlation coefficient", Unit='1/m^4', Default=1,Hidden=true); |
---|
1026 | ElgueCoeff as Real (Brief="Elgues correlation coefficient", Unit='kg/m/mol^2', Default=1,Hidden=true); |
---|
1027 | OlsenCoeff as Real (Brief="Olsens correlation coefficient", Default=1,Hidden=true); |
---|
1028 | |
---|
1029 | Pi as constant (Brief="Pi Number",Default=3.14159265, Symbol = "\pi",Hidden=true); |
---|
1030 | zero_flow as flow_mol (Brief = "Stream Flow closed",Default = 0, Hidden=true); |
---|
1031 | low_flow as flow_mol (Brief = "Low stream Flow",Default = 1E-6, Hidden=true); |
---|
1032 | VapourFlow as Switcher (Valid = ["on", "off"], Default = "on",Hidden=true); |
---|
1033 | LiquidFlow as Switcher (Valid = ["on", "off"], Default = "on",Hidden=true); |
---|
1034 | |
---|
1035 | SET |
---|
1036 | VapSideTrayIndex(VapourSideStreamLocation) =1; |
---|
1037 | LiqSideTrayIndex(LiquidSideStreamLocation) =1; |
---|
1038 | Mw = PP.MolecularWeight(); |
---|
1039 | zero_flow = 0 * 'kmol/h'; |
---|
1040 | low_flow = 1E-6 * 'kmol/h'; |
---|
1041 | |
---|
1042 | PlateArea = 0.25*Pi*(TrayDiameter^2)*(1-Fraction_DowncomerArea); |
---|
1043 | TrayVolume = 0.25*Pi*(TrayDiameter^2)*TraySpacing; |
---|
1044 | HolesArea = 0.25*Pi*(TrayDiameter^2)*Fraction_HoleArea; |
---|
1045 | |
---|
1046 | VARIABLES |
---|
1047 | |
---|
1048 | INITIALIZATION as InitializeSection (Brief = "Column Model Initialization"); |
---|
1049 | CONTROL as ControlSection (Brief = "Control"); |
---|
1050 | |
---|
1051 | out TCI as control_signal (Brief="Temperature Indicator", Protected = true, PosX=1, PosY=0.55); |
---|
1052 | out PCI as control_signal (Brief="Pressure Indicator", Protected = true, PosX=0, PosY=0.23); |
---|
1053 | |
---|
1054 | TRAYS(NumberOfTrays) as tray (Brief="Number of trays in the Column Section"); |
---|
1055 | VapourDrawOffFlow as flow_mol (Brief="Vapour Draw Off Stream Molar Flow Rate"); |
---|
1056 | LiquidDrawOffFlow as flow_mol (Brief="Vapour Draw Off Stream Molar Flow Rate"); |
---|
1057 | MurphreeEff as Real (Brief="Murphree efficiency for All Trays",Lower=0.01,Upper=1); |
---|
1058 | |
---|
1059 | out VapourDrawOff as vapour_stream (Brief="Vapour Outlet in the section", PosX=1, PosY=0.388,Protected = true); |
---|
1060 | out LiquidDrawOff as liquid_stream (Brief="Liquid Outlet in the section", PosX=1, PosY=0.47,Protected = true); |
---|
1061 | |
---|
1062 | CONNECTIONS |
---|
1063 | |
---|
1064 | #Connecting Intermediate Trays |
---|
1065 | TRAYS([2:NumberOfTrays]).OutletVapour to TRAYS([1:NumberOfTrays-1]).InletVapour; |
---|
1066 | TRAYS([1:NumberOfTrays-1]).OutletLiquid to TRAYS([2:NumberOfTrays]).InletLiquid; |
---|
1067 | |
---|
1068 | INITIAL |
---|
1069 | |
---|
1070 | for i in 1:NumberOfTrays do |
---|
1071 | |
---|
1072 | "The initial temperature of the TRAYS" |
---|
1073 | TRAYS(i).OutletLiquid.T = INITIALIZATION.TopTemperature+(INITIALIZATION.BottomTemperature-INITIALIZATION.TopTemperature)*((i-1)/(NumberOfTrays-1)); |
---|
1074 | |
---|
1075 | "The initial Level of the TRAYS" |
---|
1076 | TRAYS(i).Level = INITIALIZATION.LevelFraction*WeirHeight; |
---|
1077 | end |
---|
1078 | |
---|
1079 | for i in 1:NComp-1 do |
---|
1080 | |
---|
1081 | for j in 1:NumberOfTrays do |
---|
1082 | |
---|
1083 | "The initial composition of the TRAYS - Normalized" |
---|
1084 | TRAYS(j).OutletLiquid.z(i) = INITIALIZATION.TopComposition(i)/sum(INITIALIZATION.TopComposition) +(INITIALIZATION.BottomComposition(i)/sum(INITIALIZATION.BottomComposition)-INITIALIZATION.TopComposition(i)/sum(INITIALIZATION.TopComposition) )*((j-1)/(NumberOfTrays-1)); |
---|
1085 | end |
---|
1086 | |
---|
1087 | end |
---|
1088 | |
---|
1089 | EQUATIONS |
---|
1090 | |
---|
1091 | VapourDrawOff.F*VapSideTrayIndex= TRAYS.VapourSideStream.F; |
---|
1092 | VapourDrawOff.T = TRAYS(VapourSideStreamLocation).VapourSideStream.T; |
---|
1093 | VapourDrawOff.P = TRAYS(VapourSideStreamLocation).VapourSideStream.P; |
---|
1094 | VapourDrawOff.z = TRAYS(VapourSideStreamLocation).VapourSideStream.z; |
---|
1095 | |
---|
1096 | LiquidDrawOff.F*LiqSideTrayIndex= TRAYS.LiquidSideStream.F; |
---|
1097 | LiquidDrawOff.T = TRAYS(LiquidSideStreamLocation).LiquidSideStream.T; |
---|
1098 | LiquidDrawOff.P = TRAYS(LiquidSideStreamLocation).LiquidSideStream.P; |
---|
1099 | LiquidDrawOff.z = TRAYS(LiquidSideStreamLocation).LiquidSideStream.z; |
---|
1100 | |
---|
1101 | VapourDrawOffFlow = VapourDrawOff.F; |
---|
1102 | LiquidDrawOffFlow = LiquidDrawOff.F; |
---|
1103 | |
---|
1104 | "Tray Temperature Indicator" |
---|
1105 | #TCI*'K' = TRAYS(min([NumberOfTrays, CONTROL.Tindicator_TrayNumber])).OutletVapour.T; |
---|
1106 | TCI*'K' = TRAYS(CONTROL.Tindicator_TrayNumber).OutletVapour.T; |
---|
1107 | |
---|
1108 | "Tray Pressure Indicator" |
---|
1109 | #PCI*'atm' = TRAYS(min([NumberOfTrays, CONTROL.Pindicator_TrayNumber])).OutletVapour.P; |
---|
1110 | PCI*'atm' = TRAYS(CONTROL.Pindicator_TrayNumber).OutletVapour.P; |
---|
1111 | |
---|
1112 | for i in [1:NumberOfTrays] do |
---|
1113 | |
---|
1114 | "Murphree Efficiency" |
---|
1115 | TRAYS(i).OutletVapour.z = MurphreeEff * (TRAYS(i).yideal - TRAYS(i).InletVapour.z) + TRAYS(i).InletVapour.z; |
---|
1116 | |
---|
1117 | "Level of clear liquid over the weir" |
---|
1118 | TRAYS(i).Level = TRAYS(i).ML*TRAYS(i).vL/PlateArea; |
---|
1119 | |
---|
1120 | "Geometry Constraint" |
---|
1121 | TrayVolume = TRAYS(i).ML* TRAYS(i).vL + TRAYS(i).MV*TRAYS(i).vV; |
---|
1122 | |
---|
1123 | "Energy Holdup" |
---|
1124 | TRAYS(i).E = TRAYS(i).ML*TRAYS(i).OutletLiquid.h + TRAYS(i).MV*TRAYS(i).OutletVapour.h - TRAYS(i).OutletLiquid.P*TrayVolume; |
---|
1125 | |
---|
1126 | "Energy Balance" |
---|
1127 | diff(TRAYS(i).E) = ( TRAYS(i).Inlet.F*TRAYS(i).Inlet.h + TRAYS(i).InletLiquid.F*TRAYS(i).InletLiquid.h + TRAYS(i).InletVapour.F*TRAYS(i).InletVapour.h- TRAYS(i).OutletLiquid.F*TRAYS(i).OutletLiquid.h - TRAYS(i).OutletVapour.F*TRAYS(i).OutletVapour.h |
---|
1128 | -TRAYS(i).VapourSideStream.F*TRAYS(i).VapourSideStream.h - TRAYS(i).LiquidSideStream.F*TRAYS(i).LiquidSideStream.h + HeatSupply ); |
---|
1129 | |
---|
1130 | switch LiquidFlow |
---|
1131 | case "on": |
---|
1132 | switch LiquidFlowModel |
---|
1133 | case "default": |
---|
1134 | "Francis Equation" |
---|
1135 | TRAYS(i).OutletLiquid.F*TRAYS(i).vL = 1.84*'1/s'*WeirLength*((TRAYS(i).Level-(AerationFraction*WeirHeight))/(AerationFraction))^2; |
---|
1136 | |
---|
1137 | case "Wang_Fl": |
---|
1138 | TRAYS(i).OutletLiquid.F*TRAYS(i).vL = 1.84*'m^0.5/s'*WeirLength*((TRAYS(i).Level-(AerationFraction*WeirHeight))/(AerationFraction))^1.5; |
---|
1139 | |
---|
1140 | case "Olsen": |
---|
1141 | TRAYS(i).OutletLiquid.F / 'mol/s'= WeirLength*TrayLiquidPasses*TRAYS(i).rhoL/sum(Mw*TRAYS(i).OutletVapour.z)/(0.665*OlsenCoeff)^1.5 * ((TRAYS(i).ML*sum(Mw*TRAYS(i).OutletLiquid.z)/TRAYS(i).rhoL/PlateArea)-WeirHeight)^1.5 * 'm^0.5/mol'; |
---|
1142 | |
---|
1143 | case "Feehery_Fl": |
---|
1144 | TRAYS(i).OutletLiquid.F = WeirLength*TRAYS(i).rhoL/sum(Mw*TRAYS(i).OutletLiquid.z) * ((TRAYS(i).Level-WeirHeight)/750/'mm')^1.5 * 'm^2/s'; |
---|
1145 | |
---|
1146 | case "Roffel_Fl": |
---|
1147 | TRAYS(i).OutletLiquid.F = 2/3*TRAYS(i).rhoL/sum(Mw*TRAYS(i).OutletLiquid.z)*WeirLength*(TRAYS(i).ML*sum(Mw*TRAYS(i).OutletLiquid.z)/(PlateArea*1.3)/TRAYS(i).rhoL)^1.5*sqrt(2*g/ |
---|
1148 | (2*(1 - 0.3593/'Pa^0.0888545'*abs(TRAYS(i).OutletVapour.F*sum(Mw*TRAYS(i).OutletVapour.z)/(PlateArea*1.3)/sqrt(TRAYS(i).rhoV))^0.177709)-1)); #/'(kg/m)^0.0888545/s^0.177709'; |
---|
1149 | end |
---|
1150 | when TRAYS(i).Level < (AerationFraction *WeirHeight) switchto "off"; |
---|
1151 | |
---|
1152 | case "off": |
---|
1153 | "Low level" |
---|
1154 | TRAYS(i).OutletLiquid.F = 0 * 'mol/h'; |
---|
1155 | when TRAYS(i).Level > (AerationFraction * WeirHeight) switchto "on"; |
---|
1156 | end |
---|
1157 | |
---|
1158 | switch VapourFlow |
---|
1159 | case "on": |
---|
1160 | switch VapourFlowModel |
---|
1161 | case "Reepmeyer": |
---|
1162 | TRAYS(i).InletVapour.F*TRAYS(i).vV = sqrt((TRAYS(i).InletVapour.P - TRAYS(i).OutletVapour.P)/(TRAYS(i).rhoV*DryPdropCoeff))*HolesArea; |
---|
1163 | |
---|
1164 | case "Feehery_Fv": |
---|
1165 | TRAYS(i).InletVapour.F = TRAYS(i).rhoV/PlateArea/FeeheryCoeff/sum(Mw*TRAYS(i).OutletVapour.z) * sqrt(((TRAYS(i).InletVapour.P - TRAYS(i).OutletVapour.P)-(TRAYS(i).rhoV*g*TRAYS(i).ML*TRAYS(i).vL/PlateArea))/TRAYS(i).rhoV); |
---|
1166 | |
---|
1167 | case "Roffel_Fv": |
---|
1168 | TRAYS(i).InletVapour.F^1.08 * 0.0013 * 'kg/m/mol^1.08/s^0.92*1e5' = (TRAYS(i).InletVapour.P - TRAYS(i).OutletVapour.P)*1e5 - (AerationFraction*sum(TRAYS(i).M*Mw)/(PlateArea*1.3)*g*1e5) * (TRAYS(i).rhoV*HolesArea/sum(Mw*TRAYS(i).OutletVapour.z))^1.08 * 'm^1.08/mol^1.08'; |
---|
1169 | |
---|
1170 | case "Klingberg": |
---|
1171 | TRAYS(i).InletVapour.F * TRAYS(i).vV = PlateArea * sqrt(((TRAYS(i).InletVapour.P - TRAYS(i).OutletVapour.P)-TRAYS(i).rhoL*g*TRAYS(i).Level)/TRAYS(i).rhoV); |
---|
1172 | |
---|
1173 | case "Wang_Fv": |
---|
1174 | TRAYS(i).InletVapour.F * TRAYS(i).vV = PlateArea * sqrt(((TRAYS(i).InletVapour.P - TRAYS(i).OutletVapour.P)-TRAYS(i).rhoL*g*TRAYS(i).Level)/TRAYS(i).rhoV*DryPdropCoeff); |
---|
1175 | |
---|
1176 | case "Elgue": |
---|
1177 | TRAYS(i).InletVapour.F = sqrt((TRAYS(i).InletVapour.P - TRAYS(i).OutletVapour.P)/ElgueCoeff); |
---|
1178 | end |
---|
1179 | when TRAYS(i).InletVapour.F < 1e-6 * 'kmol/h' switchto "off"; |
---|
1180 | |
---|
1181 | case "off": |
---|
1182 | TRAYS(i).InletVapour.F = 0 * 'mol/s'; |
---|
1183 | when TRAYS(i).InletVapour.P > TRAYS(i).OutletVapour.P switchto "on"; |
---|
1184 | end |
---|
1185 | |
---|
1186 | end |
---|
1187 | |
---|
1188 | end |
---|
1189 | |
---|
1190 | Model Distillation_kettle_cond as ColumnBasic |
---|
1191 | |
---|
1192 | ATTRIBUTES |
---|
1193 | Pallete = true; |
---|
1194 | Icon = "icon/DistillationKettleCond"; |
---|
1195 | Brief = "Model of a distillation column with dynamic condenser and dynamic reboiler."; |
---|
1196 | Info = |
---|
1197 | "== Specify == |
---|
1198 | * the feed stream of each tray (Inlet); |
---|
1199 | * the Murphree eficiency for each tray Emv; |
---|
1200 | * the pump pressure difference; |
---|
1201 | * the heat supllied in reboiler and condenser; |
---|
1202 | * the condenser vapor outlet flow (OutletVapour.F); |
---|
1203 | * the reboiler liquid outlet flow (OutletLiquid.F); |
---|
1204 | * both splitter outlet flows OR one of the splitter outlet flows and the splitter frac. |
---|
1205 | |
---|
1206 | == Initial Conditions == |
---|
1207 | * the TRAYS temperature (OutletLiquid.T); |
---|
1208 | * the TRAYS liquid level (Level) OR the TRAYS liquid flow (OutletLiquid.F); |
---|
1209 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each tray; |
---|
1210 | |
---|
1211 | * the condenser temperature (OutletLiquid.T); |
---|
1212 | * the condenser liquid level (Level); |
---|
1213 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions; |
---|
1214 | |
---|
1215 | * the reboiler temperature (OutletLiquid.T); |
---|
1216 | * the reboiler liquid level (Level); |
---|
1217 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions. |
---|
1218 | "; |
---|
1219 | |
---|
1220 | SET |
---|
1221 | NumberOfFeeds = 1; |
---|
1222 | |
---|
1223 | VARIABLES |
---|
1224 | |
---|
1225 | CONDENSER as condenser; |
---|
1226 | REBOILER as reboiler; |
---|
1227 | SPLITTER as splitter_column (Brief="splitter which separate reflux and distillate",Protected=true); |
---|
1228 | PUMP as pump; |
---|
1229 | RefluxRatio as positive (Brief="Reflux Ratio",Default=10, Lower = 0.5); |
---|
1230 | |
---|
1231 | out TI_reb as control_signal (Brief="Temperature Indicator of Reboiler ",Protected = true, PosX=0.515, PosY=1); |
---|
1232 | out LI_reb as control_signal (Brief="Level Indicator of Reboiler", Protected = true, PosX=1, PosY=0.935); |
---|
1233 | out PI_reb as control_signal (Brief="Pressure Indicator of Reboiler", Protected = true, PosX=0.41, PosY=1); |
---|
1234 | |
---|
1235 | out TI_cond as control_signal (Brief="Temperature Indicator of Condenser ", Protected = true, PosX=0.52, PosY=0); |
---|
1236 | out LI_cond as control_signal (Brief="Level Indicator of Condenser", Protected = true, PosX=1, PosY=0.084); |
---|
1237 | out PI_cond as control_signal (Brief="Pressure Indicator of Condenser", Protected = true, PosX=0.42, PosY=0); |
---|
1238 | |
---|
1239 | in FeedTray as stream (Brief="Feed stream", PosX=0, PosY=0.55); |
---|
1240 | |
---|
1241 | |
---|
1242 | |
---|
1243 | in HeatToReboiler as power (Brief="Heat supplied to Reboiler",Protected = true, PosX=1, PosY=0.855); |
---|
1244 | in HeatToCondenser as power (Brief="Heat supplied to Condenser", Protected = true, PosX=1, PosY=0.01); |
---|
1245 | |
---|
1246 | |
---|
1247 | ConnectorHeatReboiler as power (Brief="Heat supplied to Reboiler", Hidden=true); |
---|
1248 | ConnectorHeatCondenser as power (Brief="Heat supplied to Condenser", Hidden=true); |
---|
1249 | |
---|
1250 | in ConnectorCondenserVout as stream (Brief="Connector for Vapour outlet stream From Condenser", Hidden=true); |
---|
1251 | in ConnectorReboilerLout as stream (Brief="Connector for Liquid outlet stream From Reboiler", Hidden=true); |
---|
1252 | in ConnectorSplitterOut as stream (Brief="Connector for Liquid outlet stream From Top Splitter", Hidden=true); |
---|
1253 | |
---|
1254 | out VapourDistillate as vapour_stream (Brief="Vapour outlet stream From Condenser", PosX=0.615, PosY=0); |
---|
1255 | out LiquidDistillate as liquid_stream (Brief="Liquid outlet stream From Top Splitter", PosX=1, PosY=0.235); |
---|
1256 | out BottomProduct as liquid_stream (Brief="Liquid outlet stream From Reboiler", PosX=0.62, PosY=1); |
---|
1257 | |
---|
1258 | EQUATIONS |
---|
1259 | |
---|
1260 | SPLITTER.RefluxRatio = RefluxRatio; |
---|
1261 | |
---|
1262 | TI_reb = REBOILER.TI ; |
---|
1263 | LI_reb = REBOILER.LI; |
---|
1264 | PI_reb = REBOILER.PI; |
---|
1265 | |
---|
1266 | TI_cond = CONDENSER.TI; |
---|
1267 | LI_cond = CONDENSER.LI; |
---|
1268 | PI_cond = CONDENSER.PI; |
---|
1269 | |
---|
1270 | for i in 1:NumberOfTrays do |
---|
1271 | |
---|
1272 | if i equal FeedTrayLocation(1) then |
---|
1273 | |
---|
1274 | "FeedTrayTop Inlet Flow" |
---|
1275 | FeedTray.F= TRAYS(i).Inlet.F; |
---|
1276 | |
---|
1277 | "FeedTrayTop Inlet Temperature" |
---|
1278 | FeedTray.T = TRAYS(i).Inlet.T; |
---|
1279 | |
---|
1280 | "FeedTrayTop Inlet Pressure" |
---|
1281 | FeedTray.P = TRAYS(i).Inlet.P; |
---|
1282 | |
---|
1283 | "FeedTrayTop Inlet Composition" |
---|
1284 | FeedTray.z = TRAYS(i).Inlet.z; |
---|
1285 | |
---|
1286 | "FeedTrayTop Inlet Vapour Fraction" |
---|
1287 | FeedTray.v = TRAYS(i).Inlet.v; |
---|
1288 | |
---|
1289 | "FeedTrayTop Inlet Enthalpy" |
---|
1290 | FeedTray.h = TRAYS(i).Inlet.h; |
---|
1291 | |
---|
1292 | else |
---|
1293 | |
---|
1294 | "Inlet Tray - Flow Sealed" |
---|
1295 | 0*'mol/h'= TRAYS(i).Inlet.F; |
---|
1296 | |
---|
1297 | "Inlet Tray - Temperature" |
---|
1298 | 300*'K' = TRAYS(i).Inlet.T; |
---|
1299 | |
---|
1300 | "Inlet Tray - Pressure" |
---|
1301 | 1*'atm' = TRAYS(i).Inlet.P; |
---|
1302 | |
---|
1303 | "Inlet Tray - Composition" |
---|
1304 | 0.1 = TRAYS(i).Inlet.z; |
---|
1305 | |
---|
1306 | "Inlet Tray - Vapour Fraction" |
---|
1307 | 0 = TRAYS(i).Inlet.v; |
---|
1308 | |
---|
1309 | "Inlet Tray - Enthalpy" |
---|
1310 | 0*'J/mol' = TRAYS(i).Inlet.h; |
---|
1311 | |
---|
1312 | end |
---|
1313 | |
---|
1314 | end |
---|
1315 | |
---|
1316 | # Condenser Connector Equations |
---|
1317 | ConnectorCondenserVout.T = VapourDistillate.T; |
---|
1318 | ConnectorCondenserVout.P = VapourDistillate.P; |
---|
1319 | ConnectorCondenserVout.F = VapourDistillate.F; |
---|
1320 | ConnectorCondenserVout.z = VapourDistillate.z; |
---|
1321 | |
---|
1322 | # Splitter Connector Equations |
---|
1323 | ConnectorSplitterOut.T = LiquidDistillate.T; |
---|
1324 | ConnectorSplitterOut.P = LiquidDistillate.P; |
---|
1325 | ConnectorSplitterOut.F = LiquidDistillate.F; |
---|
1326 | ConnectorSplitterOut.z = LiquidDistillate.z; |
---|
1327 | |
---|
1328 | # Reboiler Connector Equations |
---|
1329 | ConnectorReboilerLout.T = BottomProduct.T; |
---|
1330 | ConnectorReboilerLout.P = BottomProduct.P; |
---|
1331 | ConnectorReboilerLout.F = BottomProduct.F; |
---|
1332 | ConnectorReboilerLout.z = BottomProduct.z; |
---|
1333 | |
---|
1334 | HeatToReboiler = ConnectorHeatReboiler; |
---|
1335 | HeatToCondenser = ConnectorHeatCondenser; |
---|
1336 | |
---|
1337 | CONNECTIONS |
---|
1338 | #vapor |
---|
1339 | REBOILER.OutletVapour to TRAYS(NumberOfTrays).InletVapour; |
---|
1340 | TRAYS(1).OutletVapour to CONDENSER.InletVapour; |
---|
1341 | |
---|
1342 | #liquid |
---|
1343 | CONDENSER.OutletLiquid to SPLITTER.Inlet; |
---|
1344 | SPLITTER.Reflux to PUMP.Inlet; |
---|
1345 | PUMP.Outlet to TRAYS(1).InletLiquid; |
---|
1346 | TRAYS(NumberOfTrays).OutletLiquid to REBOILER.InletLiquid; |
---|
1347 | |
---|
1348 | #Connectors |
---|
1349 | CONDENSER.OutletVapour to ConnectorCondenserVout; |
---|
1350 | SPLITTER.Distillate to ConnectorSplitterOut; |
---|
1351 | REBOILER.OutletLiquid to ConnectorReboilerLout; |
---|
1352 | |
---|
1353 | ConnectorHeatReboiler to REBOILER.InletQ; |
---|
1354 | ConnectorHeatCondenser to CONDENSER.InletQ; |
---|
1355 | |
---|
1356 | end |
---|
1357 | |
---|
1358 | Model Distillation_thermosyphon_subcooling as ColumnBasic |
---|
1359 | ATTRIBUTES |
---|
1360 | Pallete = true; |
---|
1361 | Icon = "icon/DistillationThermosyphonSubcooling"; |
---|
1362 | Brief = "Model of a distillation column with steady condenser and steady reboiler."; |
---|
1363 | Info = |
---|
1364 | "== Specify == |
---|
1365 | * the feed stream of each tray (Inlet); |
---|
1366 | * the Murphree eficiency for each tray Emv; |
---|
1367 | * the pump head; |
---|
1368 | * the condenser pressure drop; |
---|
1369 | * the heat supllied in top and bottom tanks; |
---|
1370 | * the heat supllied in condenser and reboiler; |
---|
1371 | * the Outlet1 flow in the bottom splitter (spbottom.Outlet1.F) that corresponds to the bottom product; |
---|
1372 | * both top splitter outlet flows OR one of the splitter outlet flows and the splitter frac. |
---|
1373 | |
---|
1374 | == Initial Conditions == |
---|
1375 | * the TRAYS temperature (OutletLiquid.T); |
---|
1376 | * the TRAYS liquid level (Level) OR the TRAYS liquid flow (OutletLiquid.F); |
---|
1377 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each tray; |
---|
1378 | |
---|
1379 | * the top tank temperature (OutletLiquid.T); |
---|
1380 | * the top tank liquid level (Level); |
---|
1381 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions; |
---|
1382 | |
---|
1383 | * the bottom tank temperature (OutletLiquid.T); |
---|
1384 | * the bottom tank liquid level (Level); |
---|
1385 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions. |
---|
1386 | "; |
---|
1387 | |
---|
1388 | SET |
---|
1389 | |
---|
1390 | NumberOfFeeds = 1; |
---|
1391 | |
---|
1392 | VARIABLES |
---|
1393 | CONDENSER as condenserSteady (Brief="steady state condenser with subcooling"); |
---|
1394 | REFLUX_DRUM as TankL (Brief="Reflux Drum"); |
---|
1395 | SPLITTER_TOP as splitter_column (Brief="splitter which separate reflux and distillate",Protected=true); |
---|
1396 | PUMP as pump (Brief="pump in reflux stream"); |
---|
1397 | REBOILER as reboilerSteady (Brief="steady state reboiler (thermosyphon)"); |
---|
1398 | SUMP as SumpTank (Brief="vessel in the bottom of column"); |
---|
1399 | SPLITTER_BOTTOM as splitter2 (Brief="splitter to separate the bottom product and the stream to reboiler"); |
---|
1400 | |
---|
1401 | in FeedTray as stream (Brief="Feed stream", PosX=0, PosY=0.55); |
---|
1402 | |
---|
1403 | RefluxRatio as positive (Brief="Reflux Ratio",Default=10, Lower = 0.5); |
---|
1404 | |
---|
1405 | in Q_cond as power (Brief="Heat supplied to Condenser",PosX=1, PosY=0, Protected=true); |
---|
1406 | in Q_reb as power (Brief="Heat supplied to Reboiler", PosX=1, PosY=0.96,Protected=true); |
---|
1407 | in Q_drum as power (Brief="Heat supplied to Reflux Drum", PosX=1, PosY=0.30,Protected=true); |
---|
1408 | |
---|
1409 | out TI_reb as control_signal (Brief="Temperature Indicator of Reboiler ",Protected = true, PosX=1, PosY=0.92); |
---|
1410 | out PI_reb as control_signal (Brief="Pressure Indicator of Reboiler", Protected = true, PosX=1, PosY=0.875); |
---|
1411 | |
---|
1412 | out TI_cond as control_signal (Brief="Temperature Indicator of Condenser ", Protected = true, PosX=0.52, PosY=0); |
---|
1413 | out PI_cond as control_signal (Brief="Pressure Indicator of Condenser", Protected = true, PosX=0.42, PosY=0); |
---|
1414 | |
---|
1415 | out TI_drum as control_signal (Brief="Temperature Indicator of Reflux Drum ", Protected = true, PosX=1, PosY=0.20); |
---|
1416 | out PI_drum as control_signal (Brief="Pressure Indicator of Reflux Drum", Protected = true, PosX=1, PosY=0.155); |
---|
1417 | out LI_drum as control_signal (Brief="Level Indicator of Reflux Drum", Protected = true, PosX=1, PosY=0.24); |
---|
1418 | |
---|
1419 | out LI_sump as control_signal (Brief="Level Indicator of Column Sump", Protected = true, PosX=1, PosY=0.765); |
---|
1420 | out TI_sump as control_signal (Brief="Temperature Indicator of Column Sump ",Protected = true, PosX=1, PosY=0.71); |
---|
1421 | |
---|
1422 | out LiquidDistillate as liquid_stream (Brief="Liquid outlet stream From Top Splitter", PosX=1, PosY=0.33); |
---|
1423 | out BottomProduct as liquid_stream (Brief="Liquid outlet stream From Bottom Splitter", PosX=0.06, PosY=1); |
---|
1424 | |
---|
1425 | in ConnectorSplitterBottom as stream (Brief="Connector for Liquid outlet stream From Reboiler", Hidden=true); |
---|
1426 | in ConnectorSplitterTop as stream (Brief="Connector for Liquid outlet stream From Top Splitter", Hidden=true); |
---|
1427 | |
---|
1428 | ConnectorHeatReboiler as power (Brief="Connector for Heat supplied to Reboiler", Hidden=true); |
---|
1429 | ConnectorHeatCondenser as power (Brief="Connector for Heat supplied to Condenser", Hidden=true); |
---|
1430 | ConnectorHeatRefluxDrum as power (Brief="Connector for Heat supplied to Reflux Drum", Hidden=true); |
---|
1431 | |
---|
1432 | EQUATIONS |
---|
1433 | |
---|
1434 | SPLITTER_TOP.RefluxRatio = RefluxRatio; |
---|
1435 | TI_reb = REBOILER.TI ; |
---|
1436 | PI_reb = REBOILER.PI; |
---|
1437 | |
---|
1438 | TI_cond = CONDENSER.TI; |
---|
1439 | PI_cond = CONDENSER.PI; |
---|
1440 | |
---|
1441 | TI_drum = REFLUX_DRUM.TI; |
---|
1442 | PI_drum = REFLUX_DRUM.PI; |
---|
1443 | LI_drum = REFLUX_DRUM.LI; |
---|
1444 | |
---|
1445 | TI_sump = SUMP.TI; |
---|
1446 | LI_sump = SUMP.LI; |
---|
1447 | |
---|
1448 | for i in 1:NumberOfTrays do |
---|
1449 | |
---|
1450 | if i equal FeedTrayLocation(1) then |
---|
1451 | |
---|
1452 | "FeedTrayTop Inlet Flow" |
---|
1453 | FeedTray.F= TRAYS(i).Inlet.F; |
---|
1454 | |
---|
1455 | "FeedTrayTop Inlet Temperature" |
---|
1456 | FeedTray.T = TRAYS(i).Inlet.T; |
---|
1457 | |
---|
1458 | "FeedTrayTop Inlet Pressure" |
---|
1459 | FeedTray.P = TRAYS(i).Inlet.P; |
---|
1460 | |
---|
1461 | "FeedTrayTop Inlet Composition" |
---|
1462 | FeedTray.z = TRAYS(i).Inlet.z; |
---|
1463 | |
---|
1464 | "FeedTrayTop Inlet Vapour Fraction" |
---|
1465 | FeedTray.v = TRAYS(i).Inlet.v; |
---|
1466 | |
---|
1467 | "FeedTrayTop Inlet Enthalpy" |
---|
1468 | FeedTray.h = TRAYS(i).Inlet.h; |
---|
1469 | |
---|
1470 | else |
---|
1471 | |
---|
1472 | "Inlet Tray - Flow Sealed" |
---|
1473 | 0*'mol/h'= TRAYS(i).Inlet.F; |
---|
1474 | |
---|
1475 | "Inlet Tray - Temperature" |
---|
1476 | 300*'K' = TRAYS(i).Inlet.T; |
---|
1477 | |
---|
1478 | "Inlet Tray - Pressure" |
---|
1479 | 1*'atm' = TRAYS(i).Inlet.P; |
---|
1480 | |
---|
1481 | "Inlet Tray - Composition" |
---|
1482 | 0.1 = TRAYS(i).Inlet.z; |
---|
1483 | |
---|
1484 | "Inlet Tray - Vapour Fraction" |
---|
1485 | 0 = TRAYS(i).Inlet.v; |
---|
1486 | |
---|
1487 | "Inlet Tray - Enthalpy" |
---|
1488 | 0*'J/mol' = TRAYS(i).Inlet.h; |
---|
1489 | |
---|
1490 | end |
---|
1491 | |
---|
1492 | end |
---|
1493 | |
---|
1494 | # Heat Connector Equations |
---|
1495 | Q_cond = ConnectorHeatCondenser; |
---|
1496 | Q_reb = ConnectorHeatReboiler; |
---|
1497 | Q_drum = ConnectorHeatRefluxDrum; |
---|
1498 | |
---|
1499 | # Top Splitter Connector Equations |
---|
1500 | ConnectorSplitterTop.T = LiquidDistillate.T; |
---|
1501 | ConnectorSplitterTop.P = LiquidDistillate.P; |
---|
1502 | ConnectorSplitterTop.F = LiquidDistillate.F; |
---|
1503 | ConnectorSplitterTop.z = LiquidDistillate.z; |
---|
1504 | |
---|
1505 | # Bottom Splitter Connector Equations |
---|
1506 | ConnectorSplitterBottom.T = BottomProduct.T; |
---|
1507 | ConnectorSplitterBottom.P = BottomProduct.P; |
---|
1508 | ConnectorSplitterBottom.F = BottomProduct.F; |
---|
1509 | ConnectorSplitterBottom.z = BottomProduct.z; |
---|
1510 | |
---|
1511 | CONNECTIONS |
---|
1512 | #vapor |
---|
1513 | REBOILER.OutletVapour to SUMP.InletVapour; |
---|
1514 | SUMP.OutletVapour to TRAYS(NumberOfTrays).InletVapour; |
---|
1515 | TRAYS(1).OutletVapour to CONDENSER.InletVapour; |
---|
1516 | |
---|
1517 | #liquid |
---|
1518 | CONDENSER.OutletLiquid to REFLUX_DRUM.Inlet; |
---|
1519 | REFLUX_DRUM.OutletLiquid to SPLITTER_TOP.Inlet; |
---|
1520 | SPLITTER_TOP.Reflux to PUMP.Inlet; |
---|
1521 | PUMP.Outlet to TRAYS(1).InletLiquid; |
---|
1522 | TRAYS(NumberOfTrays).OutletLiquid to SUMP.InletLiquid; |
---|
1523 | SUMP.OutletLiquid to SPLITTER_BOTTOM.Inlet; |
---|
1524 | SPLITTER_BOTTOM.Outlet2 to REBOILER.InletLiquid; |
---|
1525 | |
---|
1526 | #Connectors |
---|
1527 | ConnectorHeatCondenser to CONDENSER.InletQ; |
---|
1528 | ConnectorHeatReboiler to REBOILER.InletQ; |
---|
1529 | ConnectorHeatRefluxDrum to REFLUX_DRUM.InletQ; |
---|
1530 | SPLITTER_TOP.Distillate to ConnectorSplitterTop; |
---|
1531 | SPLITTER_BOTTOM.Outlet1 to ConnectorSplitterBottom; |
---|
1532 | |
---|
1533 | end |
---|
1534 | |
---|
1535 | Model Distillation_thermosyphon_cond as ColumnBasic |
---|
1536 | ATTRIBUTES |
---|
1537 | Pallete = true; |
---|
1538 | Icon = "icon/DistillationThermosyphonCond"; |
---|
1539 | Brief = "Model of a distillation column with dynamic condenser and steady reboiler."; |
---|
1540 | Info = |
---|
1541 | "== Specify == |
---|
1542 | * the feed stream of each tray (Inlet); |
---|
1543 | * the Murphree eficiency for each tray Emv; |
---|
1544 | * the pump head; |
---|
1545 | * the condenser vapor outlet flow (OutletVapour.F); |
---|
1546 | * the heat supllied in bottom tank; |
---|
1547 | * the heat supllied in condenser and reboiler; |
---|
1548 | * the Outlet1 flow in the bottom splitter (spbottom.Outlet1.F) that corresponds to the bottom product; |
---|
1549 | |
---|
1550 | == Initial Conditions == |
---|
1551 | * the TRAYS temperature (OutletLiquid.T); |
---|
1552 | * the TRAYS liquid level (Level) OR the TRAYS liquid flow (OutletLiquid.F); |
---|
1553 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each tray; |
---|
1554 | |
---|
1555 | * the condenser temperature (OutletLiquid.T); |
---|
1556 | * the condenser liquid level (Level); |
---|
1557 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions; |
---|
1558 | |
---|
1559 | * the bottom tank temperature (OutletLiquid.T); |
---|
1560 | * the bottom tank liquid level (Level); |
---|
1561 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions. |
---|
1562 | "; |
---|
1563 | |
---|
1564 | SET |
---|
1565 | |
---|
1566 | NumberOfFeeds = 1; |
---|
1567 | |
---|
1568 | VARIABLES |
---|
1569 | CONDENSER as condenser (Brief="dynamic condenser without subcooling"); |
---|
1570 | SPLITTER_TOP as splitter_column (Brief="splitter which separate reflux and distillate",Protected=true); |
---|
1571 | PUMP as pump (Brief="pump in reflux stream"); |
---|
1572 | SUMP as SumpTank (Brief="vessel in the bottom of column"); |
---|
1573 | SPLITTER_BOTTOM as splitter2 (Brief="splitter who separate the bottom product and the stream to reboiler"); |
---|
1574 | REBOILER as reboilerSteady (Brief="steady state reboiler (thermosyphon)"); |
---|
1575 | RefluxRatio as positive (Brief="Reflux Ratio",Default=10, Lower = 0.5); |
---|
1576 | |
---|
1577 | in FeedTray as stream (Brief="Feed stream", PosX=0, PosY=0.55); |
---|
1578 | |
---|
1579 | in Q_cond as power (Brief="Heat supplied to Condenser",PosX=1, PosY=0, Protected=true); |
---|
1580 | in Q_reb as power (Brief="Heat supplied to Reboiler", PosX=1, PosY=0.96,Protected=true); |
---|
1581 | |
---|
1582 | out TI_cond as control_signal (Brief="Temperature Indicator of Condenser ", Protected = true, PosX=0.48, PosY=0); |
---|
1583 | out LI_cond as control_signal (Brief="Level Indicator of Condenser", Protected = true, PosX=1, PosY=0.084); |
---|
1584 | out PI_cond as control_signal (Brief="Pressure Indicator of Condenser", Protected = true, PosX=0.40, PosY=0); |
---|
1585 | |
---|
1586 | out TI_reb as control_signal (Brief="Temperature Indicator of Reboiler ",Protected = true, PosX=1, PosY=0.92); |
---|
1587 | out PI_reb as control_signal (Brief="Pressure Indicator of Reboiler", Protected = true, PosX=1, PosY=0.878); |
---|
1588 | |
---|
1589 | out LI_sump as control_signal (Brief="Level Indicator of Column Sump", Protected = true, PosX=1, PosY=0.76); |
---|
1590 | out TI_sump as control_signal (Brief="Temperature Indicator of Column Sump ",Protected = true, PosX=1, PosY=0.71); |
---|
1591 | |
---|
1592 | out VapourDistillate as vapour_stream (Brief="Vapour outlet stream From Top Condenser", PosX=0.62, PosY=0); |
---|
1593 | out LiquidDistillate as liquid_stream (Brief="Liquid outlet stream From Top Splitter", PosX=1, PosY=0.185); |
---|
1594 | out BottomProduct as liquid_stream (Brief="Liquid outlet stream From Bottom Splitter", PosX=0.06, PosY=1); |
---|
1595 | |
---|
1596 | in ConnectorSplitterBottom as stream (Brief="Connector for Liquid outlet stream From Reboiler", Hidden=true); |
---|
1597 | in ConnectorSplitterTop as stream (Brief="Connector for Liquid outlet stream From Top Splitter", Hidden=true); |
---|
1598 | in ConnectorCondenserVout as stream (Brief="Connector for Vapour outlet stream From Top Condenser", Hidden=true); |
---|
1599 | |
---|
1600 | ConnectorHeatReboiler as power (Brief="Connector for Heat supplied to Reboiler", Hidden=true); |
---|
1601 | ConnectorHeatCondenser as power (Brief="Connector for Heat supplied to Condenser", Hidden=true); |
---|
1602 | |
---|
1603 | EQUATIONS |
---|
1604 | |
---|
1605 | for i in 1:NumberOfTrays do |
---|
1606 | |
---|
1607 | if i equal FeedTrayLocation(1) then |
---|
1608 | |
---|
1609 | "FeedTrayTop Inlet Flow" |
---|
1610 | FeedTray.F= TRAYS(i).Inlet.F; |
---|
1611 | |
---|
1612 | "FeedTrayTop Inlet Temperature" |
---|
1613 | FeedTray.T = TRAYS(i).Inlet.T; |
---|
1614 | |
---|
1615 | "FeedTrayTop Inlet Pressure" |
---|
1616 | FeedTray.P = TRAYS(i).Inlet.P; |
---|
1617 | |
---|
1618 | "FeedTrayTop Inlet Composition" |
---|
1619 | FeedTray.z = TRAYS(i).Inlet.z; |
---|
1620 | |
---|
1621 | "FeedTrayTop Inlet Vapour Fraction" |
---|
1622 | FeedTray.v = TRAYS(i).Inlet.v; |
---|
1623 | |
---|
1624 | "FeedTrayTop Inlet Enthalpy" |
---|
1625 | FeedTray.h = TRAYS(i).Inlet.h; |
---|
1626 | |
---|
1627 | else |
---|
1628 | |
---|
1629 | "Inlet Tray - Flow Sealed" |
---|
1630 | 0*'mol/h'= TRAYS(i).Inlet.F; |
---|
1631 | |
---|
1632 | "Inlet Tray - Temperature" |
---|
1633 | 300*'K' = TRAYS(i).Inlet.T; |
---|
1634 | |
---|
1635 | "Inlet Tray - Pressure" |
---|
1636 | 1*'atm' = TRAYS(i).Inlet.P; |
---|
1637 | |
---|
1638 | "Inlet Tray - Composition" |
---|
1639 | 0.1 = TRAYS(i).Inlet.z; |
---|
1640 | |
---|
1641 | "Inlet Tray - Vapour Fraction" |
---|
1642 | 0 = TRAYS(i).Inlet.v; |
---|
1643 | |
---|
1644 | "Inlet Tray - Enthalpy" |
---|
1645 | 0*'J/mol' = TRAYS(i).Inlet.h; |
---|
1646 | |
---|
1647 | end |
---|
1648 | |
---|
1649 | end |
---|
1650 | |
---|
1651 | SPLITTER_TOP.RefluxRatio = RefluxRatio; |
---|
1652 | |
---|
1653 | TI_reb = REBOILER.TI ; |
---|
1654 | PI_reb = REBOILER.PI; |
---|
1655 | |
---|
1656 | TI_cond = CONDENSER.TI; |
---|
1657 | PI_cond = CONDENSER.PI; |
---|
1658 | LI_cond = CONDENSER.LI; |
---|
1659 | |
---|
1660 | TI_sump = SUMP.TI; |
---|
1661 | LI_sump = SUMP.LI; |
---|
1662 | |
---|
1663 | # Heat Connector Equations |
---|
1664 | Q_cond = ConnectorHeatCondenser; |
---|
1665 | Q_reb = ConnectorHeatReboiler; |
---|
1666 | |
---|
1667 | # Condenser Connector Equations |
---|
1668 | ConnectorCondenserVout.T = VapourDistillate.T; |
---|
1669 | ConnectorCondenserVout.P = VapourDistillate.P; |
---|
1670 | ConnectorCondenserVout.F = VapourDistillate.F; |
---|
1671 | ConnectorCondenserVout.z = VapourDistillate.z; |
---|
1672 | |
---|
1673 | # Top Splitter Connector Equations |
---|
1674 | ConnectorSplitterTop.T = LiquidDistillate.T; |
---|
1675 | ConnectorSplitterTop.P = LiquidDistillate.P; |
---|
1676 | ConnectorSplitterTop.F = LiquidDistillate.F; |
---|
1677 | ConnectorSplitterTop.z = LiquidDistillate.z; |
---|
1678 | |
---|
1679 | # Bottom Splitter Connector Equations |
---|
1680 | ConnectorSplitterBottom.T = BottomProduct.T; |
---|
1681 | ConnectorSplitterBottom.P = BottomProduct.P; |
---|
1682 | ConnectorSplitterBottom.F = BottomProduct.F; |
---|
1683 | ConnectorSplitterBottom.z = BottomProduct.z; |
---|
1684 | |
---|
1685 | CONNECTIONS |
---|
1686 | #vapor |
---|
1687 | SUMP.OutletVapour to TRAYS(NumberOfTrays).InletVapour; |
---|
1688 | REBOILER.OutletVapour to SUMP.InletVapour; |
---|
1689 | TRAYS(1).OutletVapour to CONDENSER.InletVapour; |
---|
1690 | |
---|
1691 | #liquid |
---|
1692 | CONDENSER.OutletLiquid to SPLITTER_TOP.Inlet; |
---|
1693 | SPLITTER_TOP.Reflux to PUMP.Inlet; |
---|
1694 | PUMP.Outlet to TRAYS(1).InletLiquid; |
---|
1695 | TRAYS(NumberOfTrays).OutletLiquid to SUMP.InletLiquid; |
---|
1696 | SUMP.OutletLiquid to SPLITTER_BOTTOM.Inlet; |
---|
1697 | SPLITTER_BOTTOM.Outlet2 to REBOILER.InletLiquid; |
---|
1698 | |
---|
1699 | #Connectors |
---|
1700 | ConnectorHeatCondenser to CONDENSER.InletQ; |
---|
1701 | ConnectorHeatReboiler to REBOILER.InletQ; |
---|
1702 | CONDENSER.OutletVapour to ConnectorCondenserVout; |
---|
1703 | SPLITTER_TOP.Distillate to ConnectorSplitterTop; |
---|
1704 | SPLITTER_BOTTOM.Outlet1 to ConnectorSplitterBottom; |
---|
1705 | |
---|
1706 | end |
---|
1707 | |
---|
1708 | Model Distillation_kettle_subcooling as ColumnBasic |
---|
1709 | |
---|
1710 | ATTRIBUTES |
---|
1711 | Pallete = true; |
---|
1712 | Icon = "icon/DistillationKettleSubcooling"; |
---|
1713 | Brief = "Model of a distillation column with steady condenser and dynamic reboiler."; |
---|
1714 | Info = |
---|
1715 | "== Specify == |
---|
1716 | * the feed stream of each tray (Inlet); |
---|
1717 | * the Murphree eficiency for each tray (Emv); |
---|
1718 | * the pump pressure difference; |
---|
1719 | * the heat supllied in reboiler and condenser; |
---|
1720 | * the heat supllied in the top tank; |
---|
1721 | * the condenser pressure drop; |
---|
1722 | * the reboiler liquid outlet flow (OutletLiquid.F); |
---|
1723 | * both splitter outlet flows OR one of the splitter outlet flows and the splitter frac. |
---|
1724 | |
---|
1725 | == Initial Conditions == |
---|
1726 | * the TRAYS temperature (OutletLiquid.T); |
---|
1727 | * the TRAYS liquid level (Level) OR the TRAYS liquid flow (OutletLiquid.F); |
---|
1728 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each tray; |
---|
1729 | |
---|
1730 | * the top tank temperature (OutletLiquid.T); |
---|
1731 | * the top tank liquid level (Level); |
---|
1732 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions; |
---|
1733 | |
---|
1734 | * the reboiler temperature (OutletLiquid.T); |
---|
1735 | * the reboiler liquid level (Level); |
---|
1736 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions. |
---|
1737 | "; |
---|
1738 | |
---|
1739 | SET |
---|
1740 | |
---|
1741 | NumberOfFeeds = 1; |
---|
1742 | |
---|
1743 | VARIABLES |
---|
1744 | CONDENSER as condenserSteady (Brief="steady state condenser with subcooling"); |
---|
1745 | REFLUX_DRUM as TankL (Brief="reflux drum"); |
---|
1746 | SPLITTER as splitter_column (Brief="splitter to separate reflux and distillate",Protected=true); |
---|
1747 | PUMP as pump (Brief="pump in reflux stream"); |
---|
1748 | REBOILER as reboiler (Brief="kettle reboiler"); |
---|
1749 | |
---|
1750 | RefluxRatio as positive (Brief="Reflux Ratio",Default=10, Lower = 0.5); |
---|
1751 | |
---|
1752 | in Q_cond as power (Brief="Heat supplied to Condenser", PosX=1, PosY=0.065, Protected=true); |
---|
1753 | in Q_reb as power (Brief="Heat supplied to Reboiler", PosX=1, PosY=0.905, Protected=true); |
---|
1754 | in Q_drum as power (Brief="Heat supplied to Top Vessel", PosX=1, PosY=0.30, Protected=true); |
---|
1755 | |
---|
1756 | in FeedTray as stream (Brief="Feed stream", PosX=0, PosY=0.55); |
---|
1757 | |
---|
1758 | out TI_reb as control_signal (Brief="Temperature Indicator of Reboiler ",Protected = true, PosX=0.515, PosY=1); |
---|
1759 | out LI_reb as control_signal (Brief="Level Indicator of Reboiler", Protected = true, PosX=1, PosY=0.935); |
---|
1760 | out PI_reb as control_signal (Brief="Pressure Indicator of Reboiler", Protected = true, PosX=0.41, PosY=1); |
---|
1761 | |
---|
1762 | out TI_cond as control_signal (Brief="Temperature Indicator of Condenser ", Protected = true, PosX=0.52, PosY=0); |
---|
1763 | out PI_cond as control_signal (Brief="Pressure Indicator of Condenser", Protected = true, PosX=0.42, PosY=0); |
---|
1764 | |
---|
1765 | out TI_drum as control_signal (Brief="Temperature Indicator of Reflux Drum ", Protected = true, PosX=1, PosY=0.20); |
---|
1766 | out PI_drum as control_signal (Brief="Pressure Indicator of Reflux Drum", Protected = true, PosX=1, PosY=0.155); |
---|
1767 | out LI_drum as control_signal (Brief="Level Indicator of Reflux Drum", Protected = true, PosX=1, PosY=0.24); |
---|
1768 | |
---|
1769 | |
---|
1770 | in ConnectorSplitterOut as stream (Brief="Connector for Liquid outlet stream From Top Splitter", Hidden=true); |
---|
1771 | in ConnectorReboilerLout as stream (Brief="Connector for Liquid outlet stream From Reboiler", Hidden=true); |
---|
1772 | ConnectorHeatReboiler as power (Brief="Connector for Heat supplied to Reboiler", Hidden=true); |
---|
1773 | ConnectorHeatCondenser as power (Brief="Connector for Heat supplied to Condenser", Hidden=true); |
---|
1774 | ConnectorHeatAccumulator as power (Brief="Connector for Heat supplied to TopVessel", Hidden=true); |
---|
1775 | |
---|
1776 | out LiquidDistillate as liquid_stream (Brief="Liquid outlet stream From Top Splitter", PosX=1, PosY=0.33); |
---|
1777 | out BottomProduct as liquid_stream (Brief="Liquid outlet stream From Reboiler", PosX=0.67, PosY=1); |
---|
1778 | |
---|
1779 | EQUATIONS |
---|
1780 | |
---|
1781 | SPLITTER.RefluxRatio = RefluxRatio; |
---|
1782 | |
---|
1783 | TI_reb = REBOILER.TI ; |
---|
1784 | PI_reb = REBOILER.PI; |
---|
1785 | LI_reb = REBOILER.LI; |
---|
1786 | |
---|
1787 | TI_cond = CONDENSER.TI; |
---|
1788 | PI_cond = CONDENSER.PI; |
---|
1789 | |
---|
1790 | TI_drum = REFLUX_DRUM.TI; |
---|
1791 | PI_drum = REFLUX_DRUM.PI; |
---|
1792 | LI_drum = REFLUX_DRUM.LI; |
---|
1793 | |
---|
1794 | for i in 1:NumberOfTrays do |
---|
1795 | |
---|
1796 | if i equal FeedTrayLocation(1) then |
---|
1797 | |
---|
1798 | "FeedTrayTop Inlet Flow" |
---|
1799 | FeedTray.F= TRAYS(i).Inlet.F; |
---|
1800 | |
---|
1801 | "FeedTrayTop Inlet Temperature" |
---|
1802 | FeedTray.T = TRAYS(i).Inlet.T; |
---|
1803 | |
---|
1804 | "FeedTrayTop Inlet Pressure" |
---|
1805 | FeedTray.P = TRAYS(i).Inlet.P; |
---|
1806 | |
---|
1807 | "FeedTrayTop Inlet Composition" |
---|
1808 | FeedTray.z = TRAYS(i).Inlet.z; |
---|
1809 | |
---|
1810 | "FeedTrayTop Inlet Vapour Fraction" |
---|
1811 | FeedTray.v = TRAYS(i).Inlet.v; |
---|
1812 | |
---|
1813 | "FeedTrayTop Inlet Enthalpy" |
---|
1814 | FeedTray.h = TRAYS(i).Inlet.h; |
---|
1815 | |
---|
1816 | else |
---|
1817 | |
---|
1818 | "Inlet Tray - Flow Sealed" |
---|
1819 | 0*'mol/h'= TRAYS(i).Inlet.F; |
---|
1820 | |
---|
1821 | "Inlet Tray - Temperature" |
---|
1822 | 300*'K' = TRAYS(i).Inlet.T; |
---|
1823 | |
---|
1824 | "Inlet Tray - Pressure" |
---|
1825 | 1*'atm' = TRAYS(i).Inlet.P; |
---|
1826 | |
---|
1827 | "Inlet Tray - Composition" |
---|
1828 | 0.1 = TRAYS(i).Inlet.z; |
---|
1829 | |
---|
1830 | "Inlet Tray - Vapour Fraction" |
---|
1831 | 0 = TRAYS(i).Inlet.v; |
---|
1832 | |
---|
1833 | "Inlet Tray - Enthalpy" |
---|
1834 | 0*'J/mol' = TRAYS(i).Inlet.h; |
---|
1835 | |
---|
1836 | end |
---|
1837 | |
---|
1838 | end |
---|
1839 | |
---|
1840 | #Heat Connectors |
---|
1841 | Q_cond = ConnectorHeatCondenser; |
---|
1842 | Q_reb = ConnectorHeatReboiler; |
---|
1843 | Q_drum = ConnectorHeatAccumulator; |
---|
1844 | |
---|
1845 | # Splitter Connector Equations |
---|
1846 | ConnectorSplitterOut.T = LiquidDistillate.T; |
---|
1847 | ConnectorSplitterOut.P = LiquidDistillate.P; |
---|
1848 | ConnectorSplitterOut.F = LiquidDistillate.F; |
---|
1849 | ConnectorSplitterOut.z = LiquidDistillate.z; |
---|
1850 | |
---|
1851 | # Reboiler Connector Equations |
---|
1852 | ConnectorReboilerLout.T = BottomProduct.T; |
---|
1853 | ConnectorReboilerLout.P = BottomProduct.P; |
---|
1854 | ConnectorReboilerLout.F = BottomProduct.F; |
---|
1855 | ConnectorReboilerLout.z = BottomProduct.z; |
---|
1856 | |
---|
1857 | CONNECTIONS |
---|
1858 | #vapor |
---|
1859 | REBOILER.OutletVapour to TRAYS(NumberOfTrays).InletVapour; |
---|
1860 | TRAYS(1).OutletVapour to CONDENSER.InletVapour; |
---|
1861 | |
---|
1862 | #liquid |
---|
1863 | CONDENSER.OutletLiquid to REFLUX_DRUM.Inlet; |
---|
1864 | REFLUX_DRUM.OutletLiquid to SPLITTER.Inlet; |
---|
1865 | SPLITTER.Reflux to PUMP.Inlet; |
---|
1866 | PUMP.Outlet to TRAYS(1).InletLiquid; |
---|
1867 | TRAYS(NumberOfTrays).OutletLiquid to REBOILER.InletLiquid; |
---|
1868 | |
---|
1869 | #Connectors |
---|
1870 | ConnectorHeatCondenser to CONDENSER.InletQ; |
---|
1871 | ConnectorHeatReboiler to REBOILER.InletQ; |
---|
1872 | ConnectorHeatAccumulator to REFLUX_DRUM.InletQ; |
---|
1873 | |
---|
1874 | SPLITTER.Distillate to ConnectorSplitterOut; |
---|
1875 | REBOILER.OutletLiquid to ConnectorReboilerLout; |
---|
1876 | |
---|
1877 | end |
---|
1878 | |
---|
1879 | Model Rectifier as ColumnBasic |
---|
1880 | |
---|
1881 | ATTRIBUTES |
---|
1882 | Pallete = true; |
---|
1883 | Icon = "icon/RefluxedCond"; |
---|
1884 | Brief = "Model of a rectifier column with dynamic condenser."; |
---|
1885 | Info = |
---|
1886 | "== Specify == |
---|
1887 | * the feed stream of each tray (Inlet); |
---|
1888 | * the Murphree eficiency for each tray Emv; |
---|
1889 | * the InletVapour stream of the bottom tray unless its flow; |
---|
1890 | * the pump pressure difference; |
---|
1891 | * the heat supllied in the condenser; |
---|
1892 | * the condenser vapor outlet flow (OutletVapour.F); |
---|
1893 | * both splitter outlet flows OR one of the splitter outlet flows and the splitter frac. |
---|
1894 | |
---|
1895 | == Initial Conditions == |
---|
1896 | * the TRAYS temperature (OutletLiquid.T); |
---|
1897 | * the TRAYS liquid level (Level) OR the TRAYS liquid flow (OutletLiquid.F); |
---|
1898 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each tray; |
---|
1899 | |
---|
1900 | * the condenser temperature (OutletLiquid.T); |
---|
1901 | * the condenser liquid level (Level); |
---|
1902 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions; |
---|
1903 | "; |
---|
1904 | |
---|
1905 | SET |
---|
1906 | NumberOfFeeds = 1; |
---|
1907 | |
---|
1908 | VARIABLES |
---|
1909 | CONDENSER as condenser (Brief="dymamic condenser without subcooling"); |
---|
1910 | SPLITTER as splitter2 (Brief="splitter which separate reflux and distillate"); |
---|
1911 | PUMP as pump (Brief="pump in reflux stream"); |
---|
1912 | |
---|
1913 | out TI_cond as control_signal (Brief="Temperature Indicator of Condenser ", Protected = true, PosX=0.52, PosY=0); |
---|
1914 | out LI_cond as control_signal (Brief="Level Indicator of Condenser", Protected = true, PosX=1, PosY=0.084); |
---|
1915 | out PI_cond as control_signal (Brief="Pressure Indicator of Condenser", Protected = true, PosX=0.42, PosY=0); |
---|
1916 | |
---|
1917 | in FeedTray as stream (Brief="Feed stream", PosX=0, PosY=0.55); |
---|
1918 | |
---|
1919 | out VapourDistillate as vapour_stream (Brief="Vapour outlet stream From Top Condenser", PosX=0.66, PosY=0); |
---|
1920 | out LiquidDistillate as liquid_stream (Brief="Liquid outlet stream From Top Splitter", PosX=1, PosY=0.24); |
---|
1921 | |
---|
1922 | in Q_cond as power (Brief="Heat supplied to Condenser",PosX=1, PosY=0.04, Protected = true); |
---|
1923 | |
---|
1924 | in VapourInlet as stream (Brief="Vapour Inlet in the section", PosX=0.07, PosY=1); |
---|
1925 | out LiquidOutlet as liquid_stream (Brief="Liquid Outlet in the section", PosX=0.32, PosY=1); |
---|
1926 | |
---|
1927 | in ConnectorSplitterOut as stream (Brief="Connector for Liquid outlet stream From Top Splitter", Hidden=true); |
---|
1928 | in ConnectorCondenserVout as stream (Brief="Connector for Vapour outlet stream From Top Condenser", Hidden=true); |
---|
1929 | VapourConnector as stream (Brief="Vapour connection at the middle TRAYS", PosX=0.55, PosY=0,Hidden=true); |
---|
1930 | ConnectorHeatCondenser as power (Brief="Connector for Heat supplied to Condenser", Hidden=true); |
---|
1931 | |
---|
1932 | EQUATIONS |
---|
1933 | |
---|
1934 | TI_cond = CONDENSER.TI; |
---|
1935 | LI_cond = CONDENSER.LI; |
---|
1936 | PI_cond = CONDENSER.PI; |
---|
1937 | |
---|
1938 | for i in 1:NumberOfTrays do |
---|
1939 | |
---|
1940 | if i equal FeedTrayLocation(1) then |
---|
1941 | |
---|
1942 | "FeedTrayTop Inlet Flow" |
---|
1943 | FeedTray.F= TRAYS(i).Inlet.F; |
---|
1944 | |
---|
1945 | "FeedTrayTop Inlet Temperature" |
---|
1946 | FeedTray.T = TRAYS(i).Inlet.T; |
---|
1947 | |
---|
1948 | "FeedTrayTop Inlet Pressure" |
---|
1949 | FeedTray.P = TRAYS(i).Inlet.P; |
---|
1950 | |
---|
1951 | "FeedTrayTop Inlet Composition" |
---|
1952 | FeedTray.z = TRAYS(i).Inlet.z; |
---|
1953 | |
---|
1954 | "FeedTrayTop Inlet Vapour Fraction" |
---|
1955 | FeedTray.v = TRAYS(i).Inlet.v; |
---|
1956 | |
---|
1957 | "FeedTrayTop Inlet Enthalpy" |
---|
1958 | FeedTray.h = TRAYS(i).Inlet.h; |
---|
1959 | |
---|
1960 | else |
---|
1961 | |
---|
1962 | "Inlet Tray - Flow Sealed" |
---|
1963 | 0*'mol/h'= TRAYS(i).Inlet.F; |
---|
1964 | |
---|
1965 | "Inlet Tray - Temperature" |
---|
1966 | 300*'K' = TRAYS(i).Inlet.T; |
---|
1967 | |
---|
1968 | "Inlet Tray - Pressure" |
---|
1969 | 1*'atm' = TRAYS(i).Inlet.P; |
---|
1970 | |
---|
1971 | "Inlet Tray - Composition" |
---|
1972 | 0.1 = TRAYS(i).Inlet.z; |
---|
1973 | |
---|
1974 | "Inlet Tray - Vapour Fraction" |
---|
1975 | 0 = TRAYS(i).Inlet.v; |
---|
1976 | |
---|
1977 | "Inlet Tray - Enthalpy" |
---|
1978 | 0*'J/mol' = TRAYS(i).Inlet.h; |
---|
1979 | |
---|
1980 | end |
---|
1981 | |
---|
1982 | end |
---|
1983 | |
---|
1984 | Q_cond = ConnectorHeatCondenser; |
---|
1985 | |
---|
1986 | # Condenser Connector Equations |
---|
1987 | ConnectorCondenserVout.T = VapourDistillate.T; |
---|
1988 | ConnectorCondenserVout.P = VapourDistillate.P; |
---|
1989 | ConnectorCondenserVout.F = VapourDistillate.F; |
---|
1990 | ConnectorCondenserVout.z = VapourDistillate.z; |
---|
1991 | |
---|
1992 | # Splitter Connector Equations |
---|
1993 | ConnectorSplitterOut.T = LiquidDistillate.T; |
---|
1994 | ConnectorSplitterOut.P = LiquidDistillate.P; |
---|
1995 | ConnectorSplitterOut.F = LiquidDistillate.F; |
---|
1996 | ConnectorSplitterOut.z = LiquidDistillate.z; |
---|
1997 | |
---|
1998 | LiquidOutlet.F= TRAYS(NumberOfTrays).OutletLiquid.F; |
---|
1999 | LiquidOutlet.T = TRAYS(NumberOfTrays).OutletLiquid.T; |
---|
2000 | LiquidOutlet.P = TRAYS(NumberOfTrays).OutletLiquid.P; |
---|
2001 | LiquidOutlet.z = TRAYS(NumberOfTrays).OutletLiquid.z; |
---|
2002 | |
---|
2003 | VapourConnector.F= VapourInlet.F; |
---|
2004 | VapourConnector.T = VapourInlet.T; |
---|
2005 | VapourConnector.P = VapourInlet.P; |
---|
2006 | VapourConnector.z = VapourInlet.z; |
---|
2007 | VapourConnector.v = VapourInlet.v; |
---|
2008 | VapourConnector.h = VapourInlet.h; |
---|
2009 | |
---|
2010 | CONNECTIONS |
---|
2011 | #vapor |
---|
2012 | TRAYS(1).OutletVapour to CONDENSER.InletVapour; |
---|
2013 | |
---|
2014 | #liquid |
---|
2015 | CONDENSER.OutletLiquid to SPLITTER.Inlet; |
---|
2016 | SPLITTER.Outlet2 to PUMP.Inlet; |
---|
2017 | PUMP.Outlet to TRAYS(1).InletLiquid; |
---|
2018 | |
---|
2019 | #Connectors |
---|
2020 | ConnectorHeatCondenser to CONDENSER.InletQ; |
---|
2021 | VapourConnector to TRAYS(NumberOfTrays).InletVapour; |
---|
2022 | SPLITTER.Outlet1 to ConnectorSplitterOut; |
---|
2023 | CONDENSER.OutletVapour to ConnectorCondenserVout; |
---|
2024 | |
---|
2025 | end |
---|
2026 | |
---|
2027 | Model PackedDistillation_kettle_cond as Packed_Section_ColumnBasic |
---|
2028 | ATTRIBUTES |
---|
2029 | Pallete = true; |
---|
2030 | Icon = "icon/PackedDistillationKettleCond"; |
---|
2031 | Brief = "Model of a distillation column with dynamic condenser and dynamic reboiler."; |
---|
2032 | Info = |
---|
2033 | "== Specify == |
---|
2034 | * the feed stream of each tray (Inlet); |
---|
2035 | * the pump pressure difference; |
---|
2036 | * the total pressure drop (dP) of the packing; |
---|
2037 | * the heat supllied in reboiler and condenser; |
---|
2038 | * the condenser vapor outlet flow (OutletVapour.F); |
---|
2039 | * the reboiler liquid outlet flow (OutletLiquid.F); |
---|
2040 | * both splitter outlet flows OR one of the splitter outlet flows and the splitter frac. |
---|
2041 | |
---|
2042 | == Initial Conditions == |
---|
2043 | * the stages temperature (OutletLiquid.T); |
---|
2044 | * the stages initial molar holdup; |
---|
2045 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each stage; |
---|
2046 | |
---|
2047 | * the condenser temperature (OutletLiquid.T); |
---|
2048 | * the condenser liquid level (Level); |
---|
2049 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions; |
---|
2050 | |
---|
2051 | * the reboiler temperature (OutletLiquid.T); |
---|
2052 | * the reboiler liquid level (Level); |
---|
2053 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions. |
---|
2054 | "; |
---|
2055 | |
---|
2056 | PARAMETERS |
---|
2057 | |
---|
2058 | #VapourFlow as Switcher (Valid = ["on", "off"], Hidden = true ,Default = "on"); |
---|
2059 | |
---|
2060 | VARIABLES |
---|
2061 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2062 | # Column Devices |
---|
2063 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2064 | CONDENSER as condenser (Brief="dymamic condenser"); |
---|
2065 | REBOILER as reboiler (Brief="kettle reboiler"); |
---|
2066 | SPLITTER as splitter2 (Brief="splitter which separate reflux and distillate"); |
---|
2067 | PUMP as pump (Brief="pump in reflux stream"); |
---|
2068 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2069 | # Heat Ports |
---|
2070 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2071 | in HeatToReboiler as power (Brief="Heat supplied to Reboiler",Protected = true, PosX=1, PosY=0.885); |
---|
2072 | in HeatToCondenser as power (Brief="Heat supplied to Condenser", Protected = true, PosX=1, PosY=0.034); |
---|
2073 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2074 | # Column Products |
---|
2075 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2076 | out VapourDistillate as vapour_stream (Brief="Vapour outlet stream From Top Condenser", PosX=0.66, PosY=0); |
---|
2077 | out LiquidDistillate as liquid_stream (Brief="Liquid outlet stream From Top Splitter", PosX=1, PosY=0.20); |
---|
2078 | out BottomProduct as liquid_stream (Brief="Liquid outlet stream From Reboiler", PosX=0.68, PosY=1); |
---|
2079 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2080 | # Column Connectors |
---|
2081 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2082 | in ConnectorCondenserVout as stream (Brief="Connector for Vapour outlet stream From Top Condenser", Hidden=true); |
---|
2083 | in ConnectorSplitterOut as stream (Brief="Connector for Liquid outlet stream From Top Splitter", Hidden=true); |
---|
2084 | in ConnectorReboilerLout as stream (Brief="Connector for Liquid outlet stream From Reboiler", Hidden=true); |
---|
2085 | ConnectorHeatReboiler as power (Brief="Heat supplied to Reboiler", Hidden=true); |
---|
2086 | ConnectorHeatCondenser as power (Brief="Heat supplied to Condenser", Hidden=true); |
---|
2087 | |
---|
2088 | CONNECTIONS |
---|
2089 | |
---|
2090 | #vapor |
---|
2091 | #REBOILER.OutletVapour to STAGES(NumberOfStages).VapourConnector; |
---|
2092 | STAGES(1).OutletVapour to CONDENSER.InletVapour; |
---|
2093 | |
---|
2094 | #liquid |
---|
2095 | CONDENSER.OutletLiquid to SPLITTER.Inlet; |
---|
2096 | SPLITTER.Outlet2 to PUMP.Inlet; |
---|
2097 | #PUMP.Outlet to STAGES(1).InletLiquid; |
---|
2098 | STAGES(NumberOfStages).OutletLiquid to REBOILER.InletLiquid; |
---|
2099 | |
---|
2100 | #Connectors |
---|
2101 | ConnectorHeatReboiler to REBOILER.InletQ; |
---|
2102 | ConnectorHeatCondenser to CONDENSER.InletQ; |
---|
2103 | |
---|
2104 | CONDENSER.OutletVapour to ConnectorCondenserVout; |
---|
2105 | SPLITTER.Outlet1 to ConnectorSplitterOut; |
---|
2106 | REBOILER.OutletLiquid to ConnectorReboilerLout; |
---|
2107 | |
---|
2108 | EQUATIONS |
---|
2109 | HeatToReboiler = ConnectorHeatReboiler; |
---|
2110 | HeatToCondenser = ConnectorHeatCondenser; |
---|
2111 | |
---|
2112 | # Condenser Connector Equations |
---|
2113 | ConnectorCondenserVout.T = VapourDistillate.T; |
---|
2114 | ConnectorCondenserVout.P = VapourDistillate.P; |
---|
2115 | ConnectorCondenserVout.F = VapourDistillate.F; |
---|
2116 | ConnectorCondenserVout.z = VapourDistillate.z; |
---|
2117 | |
---|
2118 | # Splitter Connector Equations |
---|
2119 | ConnectorSplitterOut.T = LiquidDistillate.T; |
---|
2120 | ConnectorSplitterOut.P = LiquidDistillate.P; |
---|
2121 | ConnectorSplitterOut.F = LiquidDistillate.F; |
---|
2122 | ConnectorSplitterOut.z = LiquidDistillate.z; |
---|
2123 | |
---|
2124 | # Reboiler Connector Equations |
---|
2125 | ConnectorReboilerLout.T = BottomProduct.T; |
---|
2126 | ConnectorReboilerLout.P = BottomProduct.P; |
---|
2127 | ConnectorReboilerLout.F = BottomProduct.F; |
---|
2128 | ConnectorReboilerLout.z = BottomProduct.z; |
---|
2129 | |
---|
2130 | end |
---|
2131 | |
---|
2132 | Model Rectifier_subcooling as Section_ColumnBasicX |
---|
2133 | |
---|
2134 | ATTRIBUTES |
---|
2135 | Pallete = true; |
---|
2136 | Icon = "icon/RefluxedSubcooling"; |
---|
2137 | Brief = "Model of a rectifier column with steady condenser."; |
---|
2138 | Info = |
---|
2139 | "== Specify == |
---|
2140 | * the feed stream of each tray (Inlet); |
---|
2141 | * the Murphree eficiency for each tray Emv; |
---|
2142 | * the InletVapour stream of the bottom tray unless its flow; |
---|
2143 | * the pump head; |
---|
2144 | * the condenser pressure drop; |
---|
2145 | * the heat supllied in the top tank; |
---|
2146 | * the heat supllied in condenser; |
---|
2147 | * both top splitter outlet flows OR one of the splitter outlet flows and the splitter frac. |
---|
2148 | |
---|
2149 | == Initial Conditions == |
---|
2150 | * the TRAYS temperature (OutletLiquid.T); |
---|
2151 | * the TRAYS liquid level (Level) OR the TRAYS liquid flow (OutletLiquid.F); |
---|
2152 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each tray; |
---|
2153 | |
---|
2154 | * the top tank temperature (OutletLiquid.T); |
---|
2155 | * the top tank liquid level (Level); |
---|
2156 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions; |
---|
2157 | "; |
---|
2158 | |
---|
2159 | PARAMETERS |
---|
2160 | CondenserVapourFlow as Switcher (Valid = ["on", "off"], Default = "on",Hidden=true); |
---|
2161 | |
---|
2162 | VARIABLES |
---|
2163 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2164 | # Column Vapour and Liquid Draw Sides |
---|
2165 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2166 | out VapourDrawOff as vapour_stream (Brief="Vapour Outlet in the section", PosX=1, PosY=0.485,Protected = true); |
---|
2167 | out LiquidDrawOff as liquid_stream (Brief="Liquid Outlet in the section", PosX=1, PosY=0.535,Protected = true); |
---|
2168 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2169 | # Column Devices |
---|
2170 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2171 | CONDENSER as condenserSteady (Brief="steady state condenser with subcooling"); |
---|
2172 | ACCUMULATOR as tank_cylindrical (Brief="vessel drum (layed cilinder)"); |
---|
2173 | SPLITTER as splitter2 (Brief="plitter which separate reflux and distillate"); |
---|
2174 | PUMP as pump (Brief="pump in reflux stream"); |
---|
2175 | alfaTopo as Real; |
---|
2176 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2177 | # Column Bottom outlets |
---|
2178 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2179 | in VapourInlet as stream (Brief="Vapour Inlet in the section", PosX=0.07, PosY=1); |
---|
2180 | out LiquidOutlet as liquid_stream (Brief="Liquid Outlet in the section", PosX=0.32, PosY=1); |
---|
2181 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2182 | # Heat Ports |
---|
2183 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2184 | in HeatToCondenser as power (Brief="Heat supplied to Condenser", PosX=1, PosY=0.070, Protected=true); |
---|
2185 | in HeatToAccumulator as power (Brief="Heat supplied to Top Accumulator", PosX=1, PosY=0.23, Protected=true); |
---|
2186 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2187 | # Column Top Product |
---|
2188 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2189 | out LiquidDistillate as liquid_stream (Brief="Liquid outlet stream From Top Splitter", PosX=1, PosY=0.285); |
---|
2190 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2191 | # Column Connectors |
---|
2192 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2193 | in ConnectorSplitterTop as stream (Brief="Connector for Liquid outlet stream From Top Splitter", Hidden=true); |
---|
2194 | VapourConnector as stream (Brief="Vapour connection at the middle TRAYS", PosX=0.55, PosY=0,Hidden=true); |
---|
2195 | ConnectorHeatCondenser as power (Brief="Connector for Heat supplied to Condenser", Hidden=true); |
---|
2196 | ConnectorHeatAccumulator as power (Brief="Connector for Heat supplied to Top Accumulator", Hidden=true); |
---|
2197 | |
---|
2198 | EQUATIONS |
---|
2199 | #Heat Connectors |
---|
2200 | HeatToCondenser = ConnectorHeatCondenser; |
---|
2201 | HeatToAccumulator = ConnectorHeatAccumulator; |
---|
2202 | |
---|
2203 | LiquidOutlet.F= TRAYS(NumberOfTrays).OutletLiquid.F; |
---|
2204 | LiquidOutlet.T = TRAYS(NumberOfTrays).OutletLiquid.T; |
---|
2205 | LiquidOutlet.P = TRAYS(NumberOfTrays).OutletLiquid.P; |
---|
2206 | LiquidOutlet.z = TRAYS(NumberOfTrays).OutletLiquid.z; |
---|
2207 | |
---|
2208 | VapourConnector.F= VapourInlet.F; |
---|
2209 | VapourConnector.T = VapourInlet.T; |
---|
2210 | VapourConnector.P = VapourInlet.P; |
---|
2211 | VapourConnector.z = VapourInlet.z; |
---|
2212 | VapourConnector.v = VapourInlet.v; |
---|
2213 | VapourConnector.h = VapourInlet.h; |
---|
2214 | |
---|
2215 | # Splitter Connector Equations |
---|
2216 | ConnectorSplitterTop.T = LiquidDistillate.T; |
---|
2217 | ConnectorSplitterTop.P = LiquidDistillate.P; |
---|
2218 | ConnectorSplitterTop.F = LiquidDistillate.F; |
---|
2219 | ConnectorSplitterTop.z = LiquidDistillate.z; |
---|
2220 | |
---|
2221 | VapourDrawOff.F*VapSideTrayIndex= TRAYS.VapourSideStream.F; |
---|
2222 | VapourDrawOff.T = TRAYS(VapourSideStreamLocation).VapourSideStream.T; |
---|
2223 | VapourDrawOff.P = TRAYS(VapourSideStreamLocation).VapourSideStream.P; |
---|
2224 | VapourDrawOff.z = TRAYS(VapourSideStreamLocation).VapourSideStream.z; |
---|
2225 | |
---|
2226 | LiquidDrawOff.F*LiqSideTrayIndex= TRAYS.LiquidSideStream.F; |
---|
2227 | LiquidDrawOff.T = TRAYS(LiquidSideStreamLocation).LiquidSideStream.T; |
---|
2228 | LiquidDrawOff.P = TRAYS(LiquidSideStreamLocation).LiquidSideStream.P; |
---|
2229 | LiquidDrawOff.z = TRAYS(LiquidSideStreamLocation).LiquidSideStream.z; |
---|
2230 | |
---|
2231 | VapourDrawOffFlow = VapourDrawOff.F; |
---|
2232 | LiquidDrawOffFlow = LiquidDrawOff.F; |
---|
2233 | |
---|
2234 | switch CondenserVapourFlow |
---|
2235 | |
---|
2236 | case "on": |
---|
2237 | CONDENSER.InletVapour.F*TRAYS(1).vV = alfaTopo *Ah * sqrt(2*(TRAYS(1).OutletVapour.P - |
---|
2238 | CONDENSER.OutletLiquid.P + 1e-8 * 'atm') / (alfa*TRAYS(1).rhoV)); |
---|
2239 | when CONDENSER.InletVapour.F < 1e-6 * 'kmol/h' switchto "off"; |
---|
2240 | |
---|
2241 | case "off": |
---|
2242 | CONDENSER.InletVapour.F = 0 * 'mol/s'; |
---|
2243 | when TRAYS(1).OutletVapour.P > CONDENSER.OutletLiquid.P + 1e-1 * 'atm' switchto "on"; |
---|
2244 | |
---|
2245 | end |
---|
2246 | |
---|
2247 | CONNECTIONS |
---|
2248 | #vapor |
---|
2249 | TRAYS(1).OutletVapour to CONDENSER.InletVapour; |
---|
2250 | |
---|
2251 | #liquid |
---|
2252 | CONDENSER.OutletLiquid to ACCUMULATOR.Inlet; |
---|
2253 | ACCUMULATOR.Outlet to SPLITTER.Inlet; |
---|
2254 | SPLITTER.Outlet2 to PUMP.Inlet; |
---|
2255 | PUMP.Outlet to TRAYS(1).InletLiquid; |
---|
2256 | |
---|
2257 | #Connectors |
---|
2258 | VapourConnector to TRAYS(NumberOfTrays).InletVapour; |
---|
2259 | ConnectorHeatCondenser to CONDENSER.InletQ; |
---|
2260 | SPLITTER.Outlet1 to ConnectorSplitterTop; |
---|
2261 | ConnectorHeatAccumulator to ACCUMULATOR.InletQ; |
---|
2262 | |
---|
2263 | end |
---|
2264 | |
---|
2265 | Model Reboiled_Stripping_kettle as Section_ColumnBasicX |
---|
2266 | |
---|
2267 | ATTRIBUTES |
---|
2268 | Pallete = true; |
---|
2269 | Icon = "icon/ReboiledKettle"; |
---|
2270 | Brief = "Model of a reboiled stripping column with dynamic reboiler."; |
---|
2271 | Info = |
---|
2272 | "== Specify == |
---|
2273 | * the feed stream of each tray (Inlet); |
---|
2274 | * the Murphree eficiency for each tray Emv; |
---|
2275 | * the vapour flow leaving the top of the column; |
---|
2276 | * the InletLiquidiquid stream of the top tray; |
---|
2277 | * the heat supllied in the reboiler; |
---|
2278 | * the reboiler liquid outlet flow (OutletLiquid.F); |
---|
2279 | |
---|
2280 | == Initial Conditions == |
---|
2281 | * the TRAYS temperature (OutletLiquid.T); |
---|
2282 | * the TRAYS liquid level (Level) OR the TRAYS liquid flow (OutletLiquid.F); |
---|
2283 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each tray; |
---|
2284 | |
---|
2285 | * the reboiler temperature (OutletLiquid.T); |
---|
2286 | * the reboiler liquid level (Level); |
---|
2287 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions. |
---|
2288 | "; |
---|
2289 | |
---|
2290 | VARIABLES |
---|
2291 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2292 | # Column Vapour and Liquid Draw Sides |
---|
2293 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2294 | out VapourDrawOff as vapour_stream (Brief="Vapour Outlet in the section", PosX=1, PosY=0.28,Protected = true); |
---|
2295 | out LiquidDrawOff as liquid_stream (Brief="Liquid Outlet in the section", PosX=1, PosY=0.33,Protected = true); |
---|
2296 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2297 | # Column Devices |
---|
2298 | #+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2299 | REBOILER as reboiler (Brief="Kettle Reboiler"); |
---|
2300 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2301 | # Heat Port |
---|
2302 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2303 | in HeatToReboiler as power (Brief="Heat supplied to Reboiler",PosX=1, PosY=0.865,Protected=true); |
---|
2304 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2305 | # Column Top Outlets |
---|
2306 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2307 | in LiquidInlet as stream (Brief="Liquid Inlet in the section", PosX=0.30, PosY=0); |
---|
2308 | out VapourOutlet as vapour_stream (Brief="Vapour Outlet in the section", PosX=0.07, PosY=0); |
---|
2309 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2310 | # Column Bottom Product |
---|
2311 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2312 | out BottomProduct as liquid_stream (Brief="Liquid outlet stream From Reboiler", PosX=0.68, PosY=1); |
---|
2313 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2314 | # Column Connectors |
---|
2315 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2316 | in ConnectorReboilerLout as stream (Brief="Connector for Liquid outlet stream From Reboiler", Hidden=true); |
---|
2317 | LiquidConnector as stream (Brief="Liquid connection at the middle TRAYS", PosX=0.75, PosY=1,Hidden=true); |
---|
2318 | ConnectorHeatReboiler as power (Brief="Connector for Heat supplied to Reboiler", Hidden=true); |
---|
2319 | |
---|
2320 | CONNECTIONS |
---|
2321 | #vapor |
---|
2322 | REBOILER.OutletVapour to TRAYS(NumberOfTrays).InletVapour; |
---|
2323 | |
---|
2324 | #liquid |
---|
2325 | TRAYS(NumberOfTrays).OutletLiquid to REBOILER.InletLiquid; |
---|
2326 | |
---|
2327 | #Connectors |
---|
2328 | REBOILER.OutletLiquid to ConnectorReboilerLout; |
---|
2329 | LiquidConnector to TRAYS(1).InletLiquid; |
---|
2330 | ConnectorHeatReboiler to REBOILER.InletQ; |
---|
2331 | |
---|
2332 | EQUATIONS |
---|
2333 | #Heat Connectors |
---|
2334 | HeatToReboiler = ConnectorHeatReboiler; |
---|
2335 | |
---|
2336 | LiquidConnector.F= LiquidInlet.F; |
---|
2337 | LiquidConnector.T = LiquidInlet.T; |
---|
2338 | LiquidConnector.P = LiquidInlet.P; |
---|
2339 | LiquidConnector.z = LiquidInlet.z; |
---|
2340 | LiquidConnector.v = LiquidInlet.v; |
---|
2341 | LiquidConnector.h = LiquidInlet.h; |
---|
2342 | |
---|
2343 | VapourOutlet.F= TRAYS(1).OutletVapour.F; |
---|
2344 | VapourOutlet.T = TRAYS(1).OutletVapour.T; |
---|
2345 | VapourOutlet.P = TRAYS(1).OutletVapour.P; |
---|
2346 | VapourOutlet.z = TRAYS(1).OutletVapour.z; |
---|
2347 | |
---|
2348 | # Reboiler Connector Equations |
---|
2349 | ConnectorReboilerLout.T = BottomProduct.T; |
---|
2350 | ConnectorReboilerLout.P = BottomProduct.P; |
---|
2351 | ConnectorReboilerLout.F = BottomProduct.F; |
---|
2352 | ConnectorReboilerLout.z = BottomProduct.z; |
---|
2353 | |
---|
2354 | VapourDrawOff.F*VapSideTrayIndex= TRAYS.VapourSideStream.F; |
---|
2355 | VapourDrawOff.T = TRAYS(VapourSideStreamLocation).VapourSideStream.T; |
---|
2356 | VapourDrawOff.P = TRAYS(VapourSideStreamLocation).VapourSideStream.P; |
---|
2357 | VapourDrawOff.z = TRAYS(VapourSideStreamLocation).VapourSideStream.z; |
---|
2358 | |
---|
2359 | LiquidDrawOff.F*LiqSideTrayIndex= TRAYS.LiquidSideStream.F; |
---|
2360 | LiquidDrawOff.T = TRAYS(LiquidSideStreamLocation).LiquidSideStream.T; |
---|
2361 | LiquidDrawOff.P = TRAYS(LiquidSideStreamLocation).LiquidSideStream.P; |
---|
2362 | LiquidDrawOff.z = TRAYS(LiquidSideStreamLocation).LiquidSideStream.z; |
---|
2363 | |
---|
2364 | VapourDrawOffFlow = VapourDrawOff.F; |
---|
2365 | LiquidDrawOffFlow = LiquidDrawOff.F; |
---|
2366 | |
---|
2367 | end |
---|
2368 | |
---|
2369 | Model Reboiled_Stripping_thermosyphon as Section_ColumnBasicX |
---|
2370 | |
---|
2371 | ATTRIBUTES |
---|
2372 | Pallete = true; |
---|
2373 | Icon = "icon/ReboiledThermosyphon"; |
---|
2374 | Brief = "Model of a reboiled stripping column with steady reboiler."; |
---|
2375 | Info = |
---|
2376 | "== Specify == |
---|
2377 | * the feed stream of each tray (Inlet); |
---|
2378 | * the Murphree eficiency for each tray (Emv); |
---|
2379 | * the vapour flow leaving the top of the column; |
---|
2380 | * the InletLiquidiquid stream of the top tray; |
---|
2381 | * the heat supllied in bottom tank; |
---|
2382 | * the heat supllied in the reboiler; |
---|
2383 | * the Outlet1 flow in the bottom splitter (spbottom.Outlet1.F) that corresponds to the bottom product; |
---|
2384 | |
---|
2385 | == Initial Conditions == |
---|
2386 | * the TRAYS temperature (OutletLiquid.T); |
---|
2387 | * the TRAYS liquid level (Level) OR the TRAYS liquid flow (OutletLiquid.F); |
---|
2388 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each tray; |
---|
2389 | |
---|
2390 | * the bottom tank temperature (OutletLiquid.T); |
---|
2391 | * the bottom tank liquid level (Level); |
---|
2392 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions. |
---|
2393 | "; |
---|
2394 | |
---|
2395 | VARIABLES |
---|
2396 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2397 | # Column Vapour and Liquid Draw Sides |
---|
2398 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2399 | out VapourDrawOff as vapour_stream (Brief="Vapour Outlet in the section", PosX=1, PosY=0.28,Protected = true); |
---|
2400 | out LiquidDrawOff as liquid_stream (Brief="Liquid Outlet in the section", PosX=1, PosY=0.33,Protected = true); |
---|
2401 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2402 | # Column Devices |
---|
2403 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2404 | REBOILER as reboilerSteady (Brief="steady state reboiler (thermosyphon)"); |
---|
2405 | SPLITTER as splitter2 (Brief="splitter which separate the bottom product and the stream to reboiler"); |
---|
2406 | ACCUMULATOR as tank (Brief="vessel in the bottom of column"); |
---|
2407 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2408 | # Heat Ports |
---|
2409 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2410 | in HeatToReboiler as power (Brief="Heat supplied to Reboiler",PosX=1, PosY=0.84,Protected=true); |
---|
2411 | in HeatToAccumulator as power (Brief="Heat supplied to Bottom Vessel",PosX=0, PosY=0.91,Protected=true); |
---|
2412 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2413 | # Column Top Outlets |
---|
2414 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2415 | in LiquidInlet as stream (Brief="Liquid Inlet in the section", PosX=0.32, PosY=0); |
---|
2416 | out VapourOutlet as vapour_stream (Brief="Vapour Outlet in the section", PosX=0.07, PosY=0); |
---|
2417 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2418 | # Column Bottom Product |
---|
2419 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2420 | out BottomProduct as liquid_stream (Brief="Liquid outlet stream From Reboiler", PosX=0.19, PosY=1); |
---|
2421 | LiquidConnector as stream (Brief="Liquid connection at the middle TRAYS", PosX=0.75, PosY=1,Hidden=true); |
---|
2422 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2423 | # Column Connectors |
---|
2424 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2425 | in ConnectorSplitterBottom as stream (Brief="Connector for Liquid outlet stream From Reboiler", Hidden=true); |
---|
2426 | ConnectorHeatReboiler as power (Brief="Connector for Heat supplied to Reboiler", Hidden=true); |
---|
2427 | ConnectorHeatAccumulator as power (Brief="Connector for Heat supplied to Bottom Accumulator", Hidden=true); |
---|
2428 | |
---|
2429 | CONNECTIONS |
---|
2430 | #vapor |
---|
2431 | REBOILER.OutletVapour to TRAYS(NumberOfTrays).InletVapour; |
---|
2432 | |
---|
2433 | #liquid |
---|
2434 | TRAYS(NumberOfTrays).OutletLiquid to ACCUMULATOR.Inlet; |
---|
2435 | ACCUMULATOR.Outlet to SPLITTER.Inlet; |
---|
2436 | SPLITTER.Outlet2 to REBOILER.InletLiquid; |
---|
2437 | |
---|
2438 | #Connectors |
---|
2439 | LiquidConnector to TRAYS(1).InletLiquid; |
---|
2440 | ConnectorHeatReboiler to REBOILER.InletQ; |
---|
2441 | ConnectorHeatAccumulator to ACCUMULATOR.InletQ; |
---|
2442 | SPLITTER.Outlet1 to ConnectorSplitterBottom; |
---|
2443 | |
---|
2444 | EQUATIONS |
---|
2445 | #Heat Connectors |
---|
2446 | HeatToReboiler = ConnectorHeatReboiler; |
---|
2447 | HeatToAccumulator = ConnectorHeatAccumulator; |
---|
2448 | |
---|
2449 | ConnectorSplitterBottom.T = BottomProduct.T; |
---|
2450 | ConnectorSplitterBottom.P = BottomProduct.P; |
---|
2451 | ConnectorSplitterBottom.F = BottomProduct.F; |
---|
2452 | ConnectorSplitterBottom.z = BottomProduct.z; |
---|
2453 | |
---|
2454 | LiquidConnector.F= LiquidInlet.F; |
---|
2455 | LiquidConnector.T = LiquidInlet.T; |
---|
2456 | LiquidConnector.P = LiquidInlet.P; |
---|
2457 | LiquidConnector.z = LiquidInlet.z; |
---|
2458 | LiquidConnector.v = LiquidInlet.v; |
---|
2459 | LiquidConnector.h = LiquidInlet.h; |
---|
2460 | |
---|
2461 | VapourOutlet.F= TRAYS(1).OutletVapour.F; |
---|
2462 | VapourOutlet.T = TRAYS(1).OutletVapour.T; |
---|
2463 | VapourOutlet.P = TRAYS(1).OutletVapour.P; |
---|
2464 | VapourOutlet.z = TRAYS(1).OutletVapour.z; |
---|
2465 | |
---|
2466 | VapourDrawOff.F*VapSideTrayIndex= TRAYS.VapourSideStream.F; |
---|
2467 | VapourDrawOff.T = TRAYS(VapourSideStreamLocation).VapourSideStream.T; |
---|
2468 | VapourDrawOff.P = TRAYS(VapourSideStreamLocation).VapourSideStream.P; |
---|
2469 | VapourDrawOff.z = TRAYS(VapourSideStreamLocation).VapourSideStream.z; |
---|
2470 | |
---|
2471 | LiquidDrawOff.F*LiqSideTrayIndex= TRAYS.LiquidSideStream.F; |
---|
2472 | LiquidDrawOff.T = TRAYS(LiquidSideStreamLocation).LiquidSideStream.T; |
---|
2473 | LiquidDrawOff.P = TRAYS(LiquidSideStreamLocation).LiquidSideStream.P; |
---|
2474 | LiquidDrawOff.z = TRAYS(LiquidSideStreamLocation).LiquidSideStream.z; |
---|
2475 | |
---|
2476 | VapourDrawOffFlow = VapourDrawOff.F; |
---|
2477 | LiquidDrawOffFlow = LiquidDrawOff.F; |
---|
2478 | |
---|
2479 | end |
---|
2480 | |
---|
2481 | Model ReactiveDistillation |
---|
2482 | |
---|
2483 | ATTRIBUTES |
---|
2484 | Pallete = true; |
---|
2485 | Icon = "icon/DistillationReac"; |
---|
2486 | Brief = "Model of a reactive distillation column with dynamic condenser and reboiler."; |
---|
2487 | Info = |
---|
2488 | "== Specify == |
---|
2489 | * the reaction related variables for each tray, condenser and reboiler; |
---|
2490 | * the feed stream of each tray (Inlet); |
---|
2491 | * the Murphree eficiency for each tray Emv; |
---|
2492 | * the pump pressure difference; |
---|
2493 | * the heat supllied in reboiler and condenser; |
---|
2494 | * the condenser vapor outlet flow (OutletVapour.F); |
---|
2495 | * the reboiler liquid outlet flow (OutletLiquid.F); |
---|
2496 | * both splitter outlet flows OR one of the splitter outlet flows and the splitter frac. |
---|
2497 | |
---|
2498 | == Initial Conditions == |
---|
2499 | * the TRAYS temperature (OutletLiquid.T); |
---|
2500 | * the TRAYS liquid level (Level) OR the TRAYS liquid flow (OutletLiquid.F); |
---|
2501 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions for each tray; |
---|
2502 | |
---|
2503 | * the condenser temperature (OutletLiquid.T); |
---|
2504 | * the condenser liquid level (Level); |
---|
2505 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions; |
---|
2506 | |
---|
2507 | * the reboiler temperature (OutletLiquid.T); |
---|
2508 | * the reboiler liquid level (Level); |
---|
2509 | * (NoComps - 1) OutletLiquid (OR OutletVapour) compositions. |
---|
2510 | "; |
---|
2511 | |
---|
2512 | PARAMETERS |
---|
2513 | outer PP as Plugin (Type="PP"); |
---|
2514 | outer NComp as Integer (Brief="Number of Components"); |
---|
2515 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2516 | # Section Column Feed Tray - Side Streams Location and Numbering |
---|
2517 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2518 | NumberOfTrays as Integer (Brief="Number of TRAYS", Default=2); |
---|
2519 | FeedTrayIndex(NumberOfTrays) as Integer (Brief="Feed Tray Index", Default=0,Hidden=true); |
---|
2520 | LiqSideTrayIndex(NumberOfTrays) as Integer (Brief="Liquid Side Tray Index", Default=0,Hidden=true); |
---|
2521 | VapSideTrayIndex(NumberOfTrays) as Integer (Brief="Vapour Side Tray Index", Default=0,Hidden=true); |
---|
2522 | FeedTrayLocation as Integer (Brief="Feed tray Location", Default=2); |
---|
2523 | LiquidSideStreamLocation as Integer (Brief="Liquid Side Stream Location", Default=2); |
---|
2524 | VapourSideStreamLocation as Integer (Brief="Vapour Side Stream Location", Default=2); |
---|
2525 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2526 | # Section Column Flow Model for Liquid and Vapour |
---|
2527 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2528 | VapourFlow as Switcher (Valid = ["on", "off"], Default = "off",Hidden=true); |
---|
2529 | TrayVapourFlow as Switcher (Valid = ["on", "off"], Default = "off",Hidden=true); |
---|
2530 | TrayLiquidFlow as Switcher (Valid = ["on", "off"], Default = "off",Hidden=true); |
---|
2531 | alfacond as Real; |
---|
2532 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2533 | # Section Column Tray Geometry and Auxiliar Parameters |
---|
2534 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2535 | V as volume (Brief="Total Volume of the tray",Hidden=true); |
---|
2536 | Q as power (Brief="Rate of heat supply",Hidden=true); |
---|
2537 | Ap as area (Brief="Plate area = Atray - Adowncomer",Hidden=true); |
---|
2538 | Ah as area (Brief="Total holes area",Hidden=true); |
---|
2539 | lw as length (Brief="Weir length",Hidden=true); |
---|
2540 | g as acceleration (Brief="Gravity Acceleration",Default=9.81,Hidden=true); |
---|
2541 | hw as length (Brief="Weir height",Hidden=true); |
---|
2542 | beta as fraction (Brief="Aeration fraction"); |
---|
2543 | alfa as fraction (Brief="Dry pressure drop coefficient"); |
---|
2544 | |
---|
2545 | VolumeOfTray as volume (Brief="Total Volume of the tray"); |
---|
2546 | HeatSupply as heat_rate (Brief="Rate of heat supply"); |
---|
2547 | PlateArea as area (Brief="Plate area = Atray - Adowncomer"); |
---|
2548 | HolesArea as area (Brief="Total holes area"); |
---|
2549 | WeirLength as length (Brief="Weir length"); |
---|
2550 | WeirHeight as length (Brief="Weir height"); |
---|
2551 | |
---|
2552 | stoic(NComp) as Real(Brief="Stoichiometric matrix"); |
---|
2553 | Hr as energy_mol; |
---|
2554 | |
---|
2555 | SET |
---|
2556 | |
---|
2557 | FeedTrayIndex(FeedTrayLocation) =1; |
---|
2558 | VapSideTrayIndex(FeedTrayLocation) =1; |
---|
2559 | LiqSideTrayIndex(FeedTrayLocation) =1; |
---|
2560 | |
---|
2561 | V=VolumeOfTray; |
---|
2562 | Q=HeatSupply; |
---|
2563 | Ap=PlateArea; |
---|
2564 | Ah=HolesArea; |
---|
2565 | lw=WeirLength; |
---|
2566 | hw=WeirHeight ; |
---|
2567 | |
---|
2568 | VARIABLES |
---|
2569 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2570 | # Tray Initialization For the Whole Column Section |
---|
2571 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2572 | INITIALIZATION as InitializeSection (Brief = "Column Model Initialization"); |
---|
2573 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2574 | # Column Feed - Side Stream Flow and Murphree Efficiency |
---|
2575 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2576 | in FeedTray as stream (Brief="Feed stream", PosX=0, PosY=0.55); |
---|
2577 | VapourDrawOffFlow as flow_mol (Brief = "Stream Molar Flow Rate"); |
---|
2578 | LiquidDrawOffFlow as flow_mol (Brief = "Stream Molar Flow Rate"); |
---|
2579 | MurphreeEff as Real (Brief = "Murphree efficiency"); |
---|
2580 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2581 | # Column Vapour and Liquid Draw Sides |
---|
2582 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2583 | out VapourDrawOff as vapour_stream (Brief="Vapour Outlet in the section", PosX=1, PosY=0.395,Protected = true); |
---|
2584 | out LiquidDrawOff as liquid_stream (Brief="Liquid Outlet in the section", PosX=1, PosY=0.44,Protected = true); |
---|
2585 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2586 | # Heat Ports |
---|
2587 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2588 | in HeatToReboiler as power (Brief="Heat supplied to Reboiler", PosX=1, PosY=0.89); |
---|
2589 | in HeatToCondenser as power (Brief="Heat supplied to Condenser", PosX=1, PosY=0.07); |
---|
2590 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2591 | # Column Devices |
---|
2592 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2593 | TRAYS(NumberOfTrays) as trayReac; |
---|
2594 | CONDENSER as condenserReact; |
---|
2595 | REBOILER as reboilerReact; |
---|
2596 | SPLITTER as splitter2; |
---|
2597 | PUMP as pump; |
---|
2598 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2599 | # Column Outlets |
---|
2600 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2601 | out VapourDistillate as vapour_stream (Brief="Vapour outlet stream From Condenser", PosX=0.59, PosY=0); |
---|
2602 | out LiquidDistillate as liquid_stream (Brief="Liquid outlet stream From Splitter", PosX=1, PosY=0.23); |
---|
2603 | out BottomProduct as liquid_stream (Brief="Liquid outlet stream From Reboiler", PosX=0.67, PosY=1); |
---|
2604 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2605 | # Column Connectors |
---|
2606 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2607 | in ConnectorCondenserVout as stream (Brief="Connector for Vapour outlet stream From Top Condenser", Hidden=true); |
---|
2608 | in ConnectorSplitterOut as stream (Brief="Connector for Liquid outlet stream From Top Splitter", Hidden=true); |
---|
2609 | in ConnectorReboilerLout as stream (Brief="Connector for Liquid outlet stream From Reboiler", Hidden=true); |
---|
2610 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2611 | # Column Control Ports |
---|
2612 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2613 | out TRI as control_signal (Brief="Temperature of Reboiler Indicator", PosX=1, PosY=0.83); |
---|
2614 | out LRI as control_signal (Brief="Level of Reboiler Indicator", PosX=1, PosY=0.855); |
---|
2615 | out TCI as control_signal (Brief="Temperature of Condenser Indicator", PosX=1, PosY=0.01); |
---|
2616 | out LCI as control_signal (Brief="Level of Condenser Indicator", PosX=1, PosY=0.04); |
---|
2617 | |
---|
2618 | CONNECTIONS |
---|
2619 | #vapor |
---|
2620 | REBOILER.OutletVapour to TRAYS(NumberOfTrays).InletVapour; |
---|
2621 | TRAYS(1).OutletVapour to CONDENSER.InletVapour; |
---|
2622 | TRAYS([2:NumberOfTrays]).OutletVapour to TRAYS([1:NumberOfTrays-1]).InletVapour; |
---|
2623 | |
---|
2624 | #liquid |
---|
2625 | CONDENSER.OutletLiquid to SPLITTER.Inlet; |
---|
2626 | SPLITTER.Outlet2 to PUMP.Inlet; |
---|
2627 | PUMP.Outlet to TRAYS(1).InletLiquid; |
---|
2628 | TRAYS([1:NumberOfTrays-1]).OutletLiquid to TRAYS([2:NumberOfTrays]).InletLiquid; |
---|
2629 | TRAYS(NumberOfTrays).OutletLiquid to REBOILER.InletLiquid; |
---|
2630 | |
---|
2631 | #Connectors |
---|
2632 | CONDENSER.OutletVapour to ConnectorCondenserVout; |
---|
2633 | SPLITTER.Outlet1 to ConnectorSplitterOut; |
---|
2634 | REBOILER.OutletLiquid to ConnectorReboilerLout; |
---|
2635 | |
---|
2636 | INITIAL |
---|
2637 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2638 | # Tray Initialization |
---|
2639 | #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
2640 | for i in 1:NumberOfTrays do |
---|
2641 | |
---|
2642 | "The initial temperature of the TRAYS" |
---|
2643 | TRAYS(i).OutletLiquid.T = INITIALIZATION.TopTemperature+(INITIALIZATION.BottomTemperature-INITIALIZATION.TopTemperature)*((i-1)/(NumberOfTrays-1)); |
---|
2644 | |
---|
2645 | "The initial Level of the TRAYS" |
---|
2646 | TRAYS(i).Level = INITIALIZATION.LevelFraction*hw; |
---|
2647 | end |
---|
2648 | |
---|
2649 | for i in 1:NComp-1 do |
---|
2650 | |
---|
2651 | for j in 1:NumberOfTrays do |
---|
2652 | |
---|
2653 | "The initial composition of the TRAYS - Normalized" |
---|
2654 | TRAYS(j).OutletLiquid.z(i) = INITIALIZATION.TopComposition(i)/sum(INITIALIZATION.TopComposition) +(INITIALIZATION.BottomComposition(i)/sum(INITIALIZATION.BottomComposition)-INITIALIZATION.TopComposition(i)/sum(INITIALIZATION.TopComposition) )*((j-1)/(NumberOfTrays-1)); |
---|
2655 | end |
---|
2656 | |
---|
2657 | end |
---|
2658 | |
---|
2659 | EQUATIONS |
---|
2660 | |
---|
2661 | for i in [1:NumberOfTrays] do |
---|
2662 | |
---|
2663 | "Murphree Efficiency" |
---|
2664 | TRAYS(i).OutletVapour.z = MurphreeEff * (TRAYS(i).yideal - TRAYS(i).InletVapour.z) + TRAYS(i).InletVapour.z; |
---|
2665 | |
---|
2666 | "Energy Holdup" |
---|
2667 | TRAYS(i).E = TRAYS(i).ML*TRAYS(i).OutletLiquid.h + TRAYS(i).MV*TRAYS(i).OutletVapour.h - TRAYS(i).OutletLiquid.P*V; |
---|
2668 | |
---|
2669 | "Component Molar Balance" |
---|
2670 | diff(TRAYS(i).M)=TRAYS(i).Inlet.F*TRAYS(i).Inlet.z + TRAYS(i).InletLiquid.F*TRAYS(i).InletLiquid.z + TRAYS(i).InletVapour.F*TRAYS(i).InletVapour.z- TRAYS(i).OutletLiquid.F*TRAYS(i).OutletLiquid.z - TRAYS(i).OutletVapour.F*TRAYS(i).OutletVapour.z- |
---|
2671 | TRAYS(i).LiquidSideStream.F*TRAYS(i).LiquidSideStream.z-TRAYS(i).VapourSideStream.F*TRAYS(i).VapourSideStream.z + stoic*TRAYS(i).r3*TRAYS(i).ML*TRAYS(i).vL; |
---|
2672 | |
---|
2673 | "Energy Balance" |
---|
2674 | diff(TRAYS(i).E) = ( TRAYS(i).Inlet.F*TRAYS(i).Inlet.h + TRAYS(i).InletLiquid.F*TRAYS(i).InletLiquid.h + TRAYS(i).InletVapour.F*TRAYS(i).InletVapour.h- TRAYS(i).OutletLiquid.F*TRAYS(i).OutletLiquid.h - TRAYS(i).OutletVapour.F*TRAYS(i).OutletVapour.h |
---|
2675 | -TRAYS(i).VapourSideStream.F*TRAYS(i).VapourSideStream.h - TRAYS(i).LiquidSideStream.F*TRAYS(i).LiquidSideStream.h + Q ) + Hr * TRAYS(i).r3 *TRAYS(i). vL*TRAYS(i).ML; |
---|
2676 | |
---|
2677 | "Level of clear liquid over the weir" |
---|
2678 | TRAYS(i).Level = TRAYS(i).ML*TRAYS(i).vL/Ap; |
---|
2679 | |
---|
2680 | "Geometry Constraint" |
---|
2681 | V = TRAYS(i).ML* TRAYS(i).vL + TRAYS(i).MV*TRAYS(i).vV; |
---|
2682 | |
---|
2683 | end |
---|
2684 | |
---|
2685 | switch VapourFlow |
---|
2686 | case "on": |
---|
2687 | "Pressure Drop through the condenser" |
---|
2688 | CONDENSER.InletVapour.F*TRAYS(1).vV / 'm^2' = |
---|
2689 | sqrt((TRAYS(1).OutletVapour.P - CONDENSER.OutletLiquid.P + 1e-8 * 'atm')/(TRAYS(1).rhoV*alfacond)); |
---|
2690 | when TRAYS(1).OutletVapour.P < CONDENSER.OutletLiquid.P switchto "off"; |
---|
2691 | |
---|
2692 | case "off": |
---|
2693 | "Prato selado" |
---|
2694 | CONDENSER.InletVapour.F = 0.0 * 'mol/s'; |
---|
2695 | when TRAYS(1).OutletVapour.P > CONDENSER.OutletLiquid.P + 1e-3 * 'atm' switchto "on"; |
---|
2696 | end |
---|
2697 | |
---|
2698 | for i in [1:NumberOfTrays] do |
---|
2699 | |
---|
2700 | switch TrayLiquidFlow |
---|
2701 | case "on": |
---|
2702 | "Francis Equation" |
---|
2703 | TRAYS(i).OutletLiquid.F*TRAYS(i).vL = 1.84*'1/s'*lw*((TRAYS(i).Level-(beta*hw)+1e-6*'m')/(beta))^2; |
---|
2704 | when TRAYS(i).Level < (beta * hw) switchto "off"; |
---|
2705 | |
---|
2706 | case "off": |
---|
2707 | "Low level" |
---|
2708 | TRAYS(i).OutletLiquid.F = 0 * 'mol/h'; |
---|
2709 | when TRAYS(i).Level > (beta * hw) + 1e-6*'m' switchto "on"; |
---|
2710 | end |
---|
2711 | |
---|
2712 | switch TrayVapourFlow |
---|
2713 | case "on": |
---|
2714 | TRAYS(i).InletVapour.F*TRAYS(i).vV = sqrt((TRAYS(i).InletVapour.P - TRAYS(i).OutletVapour.P - TRAYS(i).Level*g*TRAYS(i).rhoL + 1e-8 * 'atm')/(TRAYS(i).rhoV*alfa))*Ah; |
---|
2715 | when TRAYS(i).InletVapour.P < TRAYS(i).OutletVapour.P + TRAYS(i).Level*g*TRAYS(i).rhoL switchto "off"; |
---|
2716 | |
---|
2717 | case "off": |
---|
2718 | TRAYS(i).InletVapour.F = 0 * 'mol/s'; |
---|
2719 | when TRAYS(i).InletVapour.P > TRAYS(i).OutletVapour.P + TRAYS(i).Level*g*TRAYS(i).rhoL + 3e-2 * 'atm' switchto "on"; |
---|
2720 | end |
---|
2721 | |
---|
2722 | end |
---|
2723 | |
---|
2724 | # Connecting Trays |
---|
2725 | FeedTray.F*FeedTrayIndex= TRAYS.Inlet.F; |
---|
2726 | FeedTray.T = TRAYS.Inlet.T; |
---|
2727 | FeedTray.P = TRAYS.Inlet.P; |
---|
2728 | FeedTray.z = TRAYS.Inlet.z; |
---|
2729 | FeedTray.v = TRAYS.Inlet.v; |
---|
2730 | FeedTray.h = TRAYS.Inlet.h; |
---|
2731 | |
---|
2732 | HeatToReboiler = REBOILER.InletQ; |
---|
2733 | HeatToCondenser = CONDENSER.InletQ; |
---|
2734 | |
---|
2735 | "Reboiler Temperature indicator" |
---|
2736 | TRI * 'K' = REBOILER.OutletLiquid.T; |
---|
2737 | |
---|
2738 | "Reboiler Level indicator" |
---|
2739 | LRI*REBOILER.V = REBOILER.Level*REBOILER.Across; |
---|
2740 | |
---|
2741 | "Condenser Temperature indicator" |
---|
2742 | TCI * 'K' = CONDENSER.OutletLiquid.T; |
---|
2743 | |
---|
2744 | "Condenser Level indicator" |
---|
2745 | LCI*CONDENSER.V = CONDENSER.Level*CONDENSER.Across; |
---|
2746 | |
---|
2747 | # Condenser Connector Equations |
---|
2748 | ConnectorCondenserVout.T = VapourDistillate.T; |
---|
2749 | ConnectorCondenserVout.P = VapourDistillate.P; |
---|
2750 | ConnectorCondenserVout.F = VapourDistillate.F; |
---|
2751 | ConnectorCondenserVout.z = VapourDistillate.z; |
---|
2752 | |
---|
2753 | # Splitter Connector Equations |
---|
2754 | ConnectorSplitterOut.T = LiquidDistillate.T; |
---|
2755 | ConnectorSplitterOut.P = LiquidDistillate.P; |
---|
2756 | ConnectorSplitterOut.F = LiquidDistillate.F; |
---|
2757 | ConnectorSplitterOut.z = LiquidDistillate.z; |
---|
2758 | |
---|
2759 | # Reboiler Connector Equations |
---|
2760 | ConnectorReboilerLout.T = BottomProduct.T; |
---|
2761 | ConnectorReboilerLout.P = BottomProduct.P; |
---|
2762 | ConnectorReboilerLout.F = BottomProduct.F; |
---|
2763 | ConnectorReboilerLout.z = BottomProduct.z; |
---|
2764 | |
---|
2765 | VapourDrawOff.F*VapSideTrayIndex= TRAYS.VapourSideStream.F; |
---|
2766 | VapourDrawOff.T = TRAYS(VapourSideStreamLocation).VapourSideStream.T; |
---|
2767 | VapourDrawOff.P = TRAYS(VapourSideStreamLocation).VapourSideStream.P; |
---|
2768 | VapourDrawOff.z = TRAYS(VapourSideStreamLocation).VapourSideStream.z; |
---|
2769 | |
---|
2770 | LiquidDrawOff.F*LiqSideTrayIndex= TRAYS.LiquidSideStream.F; |
---|
2771 | LiquidDrawOff.T = TRAYS(LiquidSideStreamLocation).LiquidSideStream.T; |
---|
2772 | LiquidDrawOff.P = TRAYS(LiquidSideStreamLocation).LiquidSideStream.P; |
---|
2773 | LiquidDrawOff.z = TRAYS(LiquidSideStreamLocation).LiquidSideStream.z; |
---|
2774 | |
---|
2775 | VapourDrawOffFlow = VapourDrawOff.F; |
---|
2776 | LiquidDrawOffFlow = LiquidDrawOff.F; |
---|
2777 | |
---|
2778 | end |
---|
2779 | |
---|
2780 | *# |
---|