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 102 2007-01-09 16:06:00Z 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 "mixers_splitters/mixer"; |
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38 | using "tank"; |
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39 | using "pressure_changers/pump"; |
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40 | |
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41 | #*---------------------------------------------------------------------- |
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42 | * Model of a column section with: |
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43 | * - NTrays=number of trays trays. |
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44 | * |
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45 | *---------------------------------------------------------------------*# |
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46 | Model Section_Column |
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47 | PARAMETERS |
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48 | ext PP as CalcObject; |
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49 | ext NComp as Integer; |
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50 | NTrays as Integer(Brief="Number of trays", Default=2); |
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51 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
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52 | top as Integer(Brief="Number of top tray"); |
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53 | bot as Integer(Brief="Number of bottom tray"); |
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54 | |
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55 | SET |
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56 | top = (NTrays-1)*(1-topdown)/2+1; |
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57 | bot = NTrays/top; |
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58 | |
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59 | VARIABLES |
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60 | trays(NTrays) as tray; |
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61 | |
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62 | EQUATIONS |
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63 | "Pressure Drop through the tray" |
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64 | trays([top:topdown:bot]).OutletV.F = (1 + tanh(1 * |
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65 | (trays([top:topdown:bot]).OutletV.P - |
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66 | trays([top:topdown:bot]).InletL.P)/"Pa"))/2 * |
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67 | trays([top:topdown:bot]).Ah/trays([top:topdown:bot]).vV * |
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68 | sqrt(2*(trays([top:topdown:bot]).OutletV.P - |
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69 | trays([top:topdown:bot]).InletL.P + 1e-8 * "atm") / |
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70 | (trays([top:topdown:bot]).alfa*trays([top:topdown:bot]).rhoV)); |
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71 | |
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72 | CONNECTIONS |
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73 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
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74 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
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75 | end |
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76 | |
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77 | |
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78 | #*---------------------------------------------------------------------- |
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79 | * Model of a distillation column containing: |
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80 | * - NTrays like tray; |
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81 | * - a kettle reboiler; |
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82 | * - dymamic condenser; |
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83 | * - a splitter which separate reflux and distillate; |
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84 | * - a pump in reflux stream; |
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85 | *---------------------------------------------------------------------*# |
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86 | Model Distillation_kettle_cond |
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87 | PARAMETERS |
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88 | ext PP as CalcObject; |
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89 | ext NComp as Integer; |
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90 | NTrays as Integer(Brief="Number of trays", Default=2); |
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91 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
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92 | top as Integer(Brief="Number of top tray"); |
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93 | bot as Integer(Brief="Number of bottom tray"); |
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94 | |
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95 | SET |
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96 | top = (NTrays-1)*(1-topdown)/2+1; |
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97 | bot = NTrays/top; |
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98 | |
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99 | VARIABLES |
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100 | trays(NTrays) as tray; |
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101 | cond as condenser; |
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102 | reb as reboiler; |
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103 | sptop as splitter; |
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104 | pump1 as pump; |
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105 | |
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106 | EQUATIONS |
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107 | if (reb.OutletV.P > reb.InletL.P) then |
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108 | "Pressure Drop through the reboiler" |
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109 | reb.OutletV.F = trays(bot).Ah/reb.vV * sqrt((reb.OutletV.P - trays(bot).OutletL.P) |
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110 | / (trays(bot).beta*reb.rhoV) ); |
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111 | else |
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112 | "No flow in reboiler" |
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113 | reb.OutletV.F = 0.0 * "mol/s"; |
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114 | end |
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115 | |
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116 | "Pressure Drop through the tray" |
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117 | trays(top).OutletV.F = (1 + tanh(1 * (trays(top).OutletV.P - cond.OutletL.P)/"Pa"))/2 * |
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118 | trays(top).Ah/trays(top).vV * sqrt(2*(trays(top).OutletV.P - |
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119 | cond.OutletL.P + 1e-8 * "atm") / (trays(top).alfa*trays(top).rhoV)); |
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120 | |
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121 | trays([top+topdown:topdown:bot]).OutletV.F = (1 + tanh(1 * |
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122 | (trays([top+topdown:topdown:bot]).OutletV.P - |
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123 | trays([top+topdown:topdown:bot]).InletL.P)/"Pa"))/2 * |
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124 | trays([top+topdown:topdown:bot]).Ah/trays([top+topdown:topdown:bot]).vV * |
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125 | sqrt(2*(trays([top+topdown:topdown:bot]).OutletV.P - |
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126 | trays([top+topdown:topdown:bot]).InletL.P + 1e-8 * "atm") / |
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127 | (trays([top+topdown:topdown:bot]).alfa*trays([top+topdown:topdown:bot]).rhoV)); |
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128 | |
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129 | CONNECTIONS |
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130 | #vapor |
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131 | reb.OutletV to trays(bot).InletV; |
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132 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
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133 | trays(top).OutletV to cond.InletV; |
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134 | |
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135 | #liquid |
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136 | cond.OutletL to sptop.Inlet; |
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137 | sptop.Outlet2 to pump1.Inlet; |
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138 | pump1.Outlet to trays(top).InletL; |
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139 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
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140 | trays(bot).OutletL to reb.InletL; |
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141 | end |
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142 | |
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143 | |
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144 | #* ------------------------------------------------------------------- |
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145 | * Distillation Column model with: |
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146 | * |
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147 | * - NTrays like tray; |
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148 | * - a vessel in the bottom of column; |
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149 | * - a splitter who separate the bottom product and the stream to reboiler; |
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150 | * - steady state reboiler (thermosyphon); |
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151 | * - a steady state condenser with subcooling; |
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152 | * - a vessel drum (layed cilinder); |
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153 | * - a splitter which separate reflux and distillate; |
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154 | * - a pump in reflux stream. |
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155 | * |
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156 | * ------------------------------------------------------------------*# |
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157 | Model Distillation_thermosyphon_subcooling |
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158 | PARAMETERS |
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159 | ext PP as CalcObject; |
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160 | ext NComp as Integer; |
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161 | NTrays as Integer(Brief="Number of trays", Default=2); |
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162 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
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163 | top as Integer(Brief="Number of top tray"); |
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164 | bot as Integer(Brief="Number of bottom tray"); |
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165 | |
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166 | SET |
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167 | top = (NTrays-1)*(1-topdown)/2+1; |
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168 | bot = NTrays/top; |
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169 | |
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170 | VARIABLES |
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171 | trays(NTrays) as tray; |
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172 | cond as condenserSteady; |
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173 | reb as reboilerSteady; |
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174 | tbottom as tank; |
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175 | ttop as tank_cylindrical; |
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176 | spbottom as splitter; |
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177 | sptop as splitter; |
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178 | pump1 as pump; |
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179 | |
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180 | EQUATIONS |
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181 | if (reb.OutletV.P > reb.InletL.P) then |
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182 | "Pressure Drop through the reboiler" |
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183 | reb.OutletV.F = trays(bot).Ah/reb.vV * sqrt((reb.OutletV.P - trays(bot).OutletL.P) |
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184 | / (trays(bot).alfa*reb.rhoV) ); |
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185 | else |
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186 | "No flow in reboiler" |
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187 | reb.OutletV.F = 0.0 * "mol/s"; |
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188 | end |
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189 | |
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190 | "Pressure Drop through the tray" |
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191 | trays(top).OutletV.F = (1 + tanh(1 * (trays(top).OutletV.P - ttop.Outlet.P)/"Pa"))/2 * |
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192 | trays(top).Ah/trays(top).vV /2* sqrt(2*(trays(top).OutletV.P - |
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193 | ttop.Outlet.P + 1e-8 * "atm") / (trays(top).alfa*trays(top).rhoV)); |
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194 | |
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195 | trays([top+topdown:topdown:bot]).OutletV.F = (1 + tanh(1 * |
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196 | (trays([top+topdown:topdown:bot]).OutletV.P - |
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197 | trays([top+topdown:topdown:bot]).InletL.P)/"Pa"))/2 * |
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198 | trays([top+topdown:topdown:bot]).Ah/trays([top+topdown:topdown:bot]).vV /2* |
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199 | sqrt(2*(trays([top+topdown:topdown:bot]).OutletV.P - |
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200 | trays([top+topdown:topdown:bot]).InletL.P + 1e-8 * "atm") / |
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201 | (trays([top+topdown:topdown:bot]).alfa*trays([top+topdown:topdown:bot]).rhoV)); |
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202 | |
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203 | CONNECTIONS |
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204 | #vapor |
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205 | reb.OutletV to trays(bot).InletV; |
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206 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
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207 | trays(top).OutletV to cond.InletV; |
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208 | |
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209 | #liquid |
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210 | cond.OutletL to ttop.Inlet; |
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211 | ttop.Outlet to sptop.Inlet; |
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212 | sptop.Outlet2 to pump1.Inlet; |
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213 | pump1.Outlet to trays(top).InletL; |
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214 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
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215 | trays(bot).OutletL to tbottom.Inlet; |
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216 | tbottom.Outlet to spbottom.Inlet; |
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217 | spbottom.Outlet2 to reb.InletL; |
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218 | end |
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219 | |
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220 | |
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221 | #* ------------------------------------------------------------------- |
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222 | * Distillation Column model with: |
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223 | * |
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224 | * - NTrays like tray; |
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225 | * - a vessel in the bottom of column; |
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226 | * - a splitter who separate the bottom product and the stream to reboiler; |
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227 | * - steady state reboiler (thermosyphon); |
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228 | * - a dynamic condenser without subcooling; |
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229 | * - a splitter which separate reflux and distillate; |
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230 | * - a pump in reflux stream. |
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231 | * |
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232 | * ------------------------------------------------------------------*# |
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233 | Model Distillation_thermosyphon_cond |
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234 | PARAMETERS |
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235 | ext PP as CalcObject; |
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236 | ext NComp as Integer; |
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237 | NTrays as Integer(Brief="Number of trays", Default=2); |
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238 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
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239 | top as Integer(Brief="Number of top tray"); |
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240 | bot as Integer(Brief="Number of bottom tray"); |
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241 | |
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242 | SET |
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243 | top = (NTrays-1)*(1-topdown)/2+1; |
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244 | bot = NTrays/top; |
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245 | |
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246 | VARIABLES |
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247 | trays(NTrays) as tray; |
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248 | cond as condenser; |
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249 | reb as reboilerSteady; |
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250 | tbottom as tank; |
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251 | spbottom as splitter; |
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252 | sptop as splitter; |
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253 | pump1 as pump; |
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254 | |
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255 | EQUATIONS |
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256 | if (reb.OutletV.P > reb.InletL.P) then |
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257 | "Pressure Drop through the reboiler" |
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258 | reb.OutletV.F = trays(bot).Ah/reb.vV * sqrt((reb.OutletV.P - trays(bot).OutletL.P) |
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259 | / (trays(bot).alfa*reb.rhoV) ); |
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260 | else |
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261 | "No flow in reboiler" |
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262 | reb.OutletV.F = 0.0 * "mol/s"; |
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263 | end |
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264 | |
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265 | "Pressure Drop through the tray" |
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266 | trays(top).OutletV.F = (1 + tanh(1 * (trays(top).OutletV.P - cond.OutletL.P)/"Pa"))/2 * |
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267 | trays(top).Ah/trays(top).vV * sqrt(2*(trays(top).OutletV.P - |
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268 | cond.OutletL.P + 1e-8 * "atm") / (trays(top).alfa*trays(top).rhoV)); |
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269 | |
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270 | trays([top+topdown:topdown:bot]).OutletV.F = (1 + tanh(1 * |
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271 | (trays([top+topdown:topdown:bot]).OutletV.P - |
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272 | trays([top+topdown:topdown:bot]).InletL.P)/"Pa"))/2 * |
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273 | trays([top+topdown:topdown:bot]).Ah/trays([top+topdown:topdown:bot]).vV * |
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274 | sqrt(2*(trays([top+topdown:topdown:bot]).OutletV.P - |
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275 | trays([top+topdown:topdown:bot]).InletL.P + 1e-8 * "atm") / |
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276 | (trays([top+topdown:topdown:bot]).alfa*trays([top+topdown:topdown:bot]).rhoV)); |
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277 | |
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278 | CONNECTIONS |
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279 | #vapor |
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280 | reb.OutletV to trays(bot).InletV; |
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281 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
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282 | trays(top).OutletV to cond.InletV; |
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283 | |
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284 | #liquid |
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285 | cond.OutletL to sptop.Inlet; |
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286 | sptop.Outlet2 to pump1.Inlet; |
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287 | pump1.Outlet to trays(top).InletL; |
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288 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
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289 | trays(bot).OutletL to tbottom.Inlet; |
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290 | tbottom.Outlet to spbottom.Inlet; |
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291 | spbottom.Outlet2 to reb.InletL; |
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292 | end |
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293 | |
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294 | #* ------------------------------------------------------------------- |
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295 | * Distillation Column model with: |
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296 | * |
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297 | * - NTrays like tray; |
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298 | * - a kettle reboiler; |
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299 | * - a steady state condenser with subcooling; |
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300 | * - a vessel drum (layed cilinder); |
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301 | * - a splitter which separate reflux and distillate; |
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302 | * - a pump in reflux stream. |
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303 | * |
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304 | * ------------------------------------------------------------------*# |
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305 | Model Distillation_kettle_subcooling |
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306 | PARAMETERS |
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307 | ext PP as CalcObject; |
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308 | ext NComp as Integer; |
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309 | NTrays as Integer(Brief="Number of trays", Default=2); |
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310 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
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311 | top as Integer(Brief="Number of top tray"); |
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312 | bot as Integer(Brief="Number of bottom tray"); |
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313 | |
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314 | SET |
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315 | top = (NTrays-1)*(1-topdown)/2+1; |
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316 | bot = NTrays/top; |
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317 | |
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318 | VARIABLES |
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319 | trays(NTrays) as tray; |
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320 | cond as condenserSteady; |
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321 | reb as reboiler; |
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322 | ttop as tank_cylindrical; |
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323 | sptop as splitter; |
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324 | pump1 as pump; |
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325 | |
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326 | EQUATIONS |
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327 | if (reb.OutletV.P > reb.InletL.P) then |
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328 | "Pressure Drop through the reboiler" |
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329 | reb.OutletV.F = trays(bot).Ah/reb.vV * sqrt((reb.OutletV.P - trays(bot).OutletL.P) |
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330 | / (trays(bot).beta*reb.rhoV) ); |
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331 | else |
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332 | "No flow in reboiler" |
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333 | reb.OutletV.F = 0.0 * "mol/s"; |
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334 | end |
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335 | |
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336 | "Pressure Drop through the tray" |
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337 | trays(top).OutletV.F = (1 + tanh(1 * (trays(top).OutletV.P - ttop.Outlet.P)/"Pa"))/2 * |
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338 | trays(top).Ah/trays(top).vV * sqrt(2*(trays(top).OutletV.P - |
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339 | ttop.Outlet.P + 1e-8 * "atm") / (trays(top).alfa*trays(top).rhoV)); |
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340 | |
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341 | trays([top+topdown:topdown:bot]).OutletV.F = (1 + tanh(1 * |
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342 | (trays([top+topdown:topdown:bot]).OutletV.P - |
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343 | trays([top+topdown:topdown:bot]).InletL.P)/"Pa"))/2 * |
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344 | trays([top+topdown:topdown:bot]).Ah/trays([top+topdown:topdown:bot]).vV * |
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345 | sqrt(2*(trays([top+topdown:topdown:bot]).OutletV.P - |
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346 | trays([top+topdown:topdown:bot]).InletL.P + 1e-8 * "atm") / |
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347 | (trays([top+topdown:topdown:bot]).alfa*trays([top+topdown:topdown:bot]).rhoV)); |
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348 | |
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349 | CONNECTIONS |
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350 | #vapor |
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351 | reb.OutletV to trays(bot).InletV; |
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352 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
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353 | trays(top).OutletV to cond.InletV; |
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354 | |
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355 | #liquid |
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356 | cond.OutletL to ttop.Inlet; |
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357 | ttop.Outlet to sptop.Inlet; |
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358 | sptop.Outlet2 to pump1.Inlet; |
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359 | pump1.Outlet to trays(top).InletL; |
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360 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
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361 | trays(bot).OutletL to reb.InletL; |
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362 | end |
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363 | |
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364 | |
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365 | #*---------------------------------------------------------------------- |
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366 | * Model of a rectifier containing: |
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367 | * - NTrays like tray; |
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368 | * - dymamic condenser without subcooling; |
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369 | * - a splitter which separate reflux and distillate; |
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370 | * - a pump in reflux stream; |
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371 | *---------------------------------------------------------------------*# |
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372 | Model Rectifier |
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373 | PARAMETERS |
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374 | ext PP as CalcObject; |
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375 | ext NComp as Integer; |
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376 | NTrays as Integer(Brief="Number of trays", Default=2); |
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377 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
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378 | top as Integer(Brief="Number of top tray"); |
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379 | bot as Integer(Brief="Number of bottom tray"); |
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380 | |
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381 | SET |
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382 | top = (NTrays-1)*(1-topdown)/2+1; |
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383 | bot = NTrays/top; |
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384 | |
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385 | VARIABLES |
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386 | trays(NTrays) as tray; |
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387 | cond as condenser; |
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388 | sptop as splitter; |
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389 | pump1 as pump; |
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390 | |
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391 | EQUATIONS |
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392 | "Pressure Drop through the tray" |
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393 | trays(top).OutletV.F = (1 + tanh(1 * (trays(top).OutletV.P - cond.OutletL.P)/"Pa"))/2 * |
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394 | trays(top).Ah/trays(top).vV * sqrt(2*(trays(top).OutletV.P - |
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395 | cond.OutletL.P + 1e-8 * "atm") / (trays(top).alfa*trays(top).rhoV)); |
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396 | |
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397 | trays([top+topdown:topdown:bot]).OutletV.F = (1 + tanh(1 * |
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398 | (trays([top+topdown:topdown:bot]).OutletV.P - |
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399 | trays([top+topdown:topdown:bot]).InletL.P)/"Pa"))/2 * |
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400 | trays([top+topdown:topdown:bot]).Ah/trays([top+topdown:topdown:bot]).vV * |
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401 | sqrt(2*(trays([top+topdown:topdown:bot]).OutletV.P - |
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402 | trays([top+topdown:topdown:bot]).InletL.P + 1e-8 * "atm") / |
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403 | (trays([top+topdown:topdown:bot]).alfa*trays([top+topdown:topdown:bot]).rhoV)); |
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404 | |
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405 | CONNECTIONS |
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406 | #vapor |
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407 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
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408 | trays(top).OutletV to cond.InletV; |
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409 | |
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410 | #liquid |
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411 | cond.OutletL to sptop.Inlet; |
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412 | sptop.Outlet2 to pump1.Inlet; |
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413 | pump1.Outlet to trays(top).InletL; |
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414 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
---|
415 | end |
---|
416 | |
---|
417 | |
---|
418 | #* ------------------------------------------------------------------- |
---|
419 | * Rectifier Column with: |
---|
420 | * |
---|
421 | * - NTrays like tray; |
---|
422 | * - a steady state condenser with subcooling; |
---|
423 | * - a vessel drum (layed cilinder); |
---|
424 | * - a splitter which separate reflux and distillate; |
---|
425 | * - a pump in reflux stream. |
---|
426 | * |
---|
427 | * ------------------------------------------------------------------*# |
---|
428 | Model Rectifier_subcooling |
---|
429 | PARAMETERS |
---|
430 | ext PP as CalcObject; |
---|
431 | ext NComp as Integer; |
---|
432 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
433 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
---|
434 | top as Integer(Brief="Number of top tray"); |
---|
435 | bot as Integer(Brief="Number of bottom tray"); |
---|
436 | |
---|
437 | SET |
---|
438 | top = (NTrays-1)*(1-topdown)/2+1; |
---|
439 | bot = NTrays/top; |
---|
440 | |
---|
441 | VARIABLES |
---|
442 | trays(NTrays) as tray; |
---|
443 | cond as condenserSteady; |
---|
444 | ttop as tank_cylindrical; |
---|
445 | sptop as splitter; |
---|
446 | pump1 as pump; |
---|
447 | |
---|
448 | EQUATIONS |
---|
449 | "Pressure Drop through the tray" |
---|
450 | trays(top).OutletV.F = (1 + tanh(1 * (trays(top).OutletV.P - ttop.Outlet.P)/"Pa"))/2 * |
---|
451 | trays(top).Ah/trays(top).vV * sqrt(2*(trays(top).OutletV.P - |
---|
452 | ttop.Outlet.P + 1e-8 * "atm") / (trays(top).alfa*trays(top).rhoV)); |
---|
453 | |
---|
454 | trays([top+topdown:topdown:bot]).OutletV.F = (1 + tanh(1 * |
---|
455 | (trays([top+topdown:topdown:bot]).OutletV.P - |
---|
456 | trays([top+topdown:topdown:bot]).InletL.P)/"Pa"))/2 * |
---|
457 | trays([top+topdown:topdown:bot]).Ah/trays([top+topdown:topdown:bot]).vV * |
---|
458 | sqrt(2*(trays([top+topdown:topdown:bot]).OutletV.P - |
---|
459 | trays([top+topdown:topdown:bot]).InletL.P + 1e-8 * "atm") / |
---|
460 | (trays([top+topdown:topdown:bot]).alfa*trays([top+topdown:topdown:bot]).rhoV)); |
---|
461 | |
---|
462 | CONNECTIONS |
---|
463 | #vapor |
---|
464 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
---|
465 | trays(top).OutletV to cond.InletV; |
---|
466 | |
---|
467 | #liquid |
---|
468 | cond.OutletL to ttop.Inlet; |
---|
469 | ttop.Outlet to sptop.Inlet; |
---|
470 | sptop.Outlet2 to pump1.Inlet; |
---|
471 | pump1.Outlet to trays(top).InletL; |
---|
472 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
---|
473 | end |
---|
474 | |
---|
475 | |
---|
476 | #*---------------------------------------------------------------------- |
---|
477 | * Model of a Refluxed Stripping column containing: |
---|
478 | * - NTrays like tray; |
---|
479 | * - dymamic condenser without subcooling; |
---|
480 | * - a splitter which separate reflux and distillate; |
---|
481 | * - a pump in reflux stream; |
---|
482 | *---------------------------------------------------------------------*# |
---|
483 | Model Refluxed_Stripping |
---|
484 | PARAMETERS |
---|
485 | ext PP as CalcObject; |
---|
486 | ext NComp as Integer; |
---|
487 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
488 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
---|
489 | top as Integer(Brief="Number of top tray"); |
---|
490 | bot as Integer(Brief="Number of bottom tray"); |
---|
491 | |
---|
492 | SET |
---|
493 | top = (NTrays-1)*(1-topdown)/2+1; |
---|
494 | bot = NTrays/top; |
---|
495 | |
---|
496 | VARIABLES |
---|
497 | trays(NTrays) as tray; |
---|
498 | cond as condenser; |
---|
499 | sptop as splitter; |
---|
500 | pump1 as pump; |
---|
501 | |
---|
502 | EQUATIONS |
---|
503 | "Pressure Drop through the tray" |
---|
504 | trays(top).OutletV.F = (1 + tanh(1 * (trays(top).OutletV.P - cond.OutletL.P)/"Pa"))/2 * |
---|
505 | trays(top).Ah/trays(top).vV * sqrt(2*(trays(top).OutletV.P - |
---|
506 | cond.OutletL.P + 1e-8 * "atm") / (trays(top).alfa*trays(top).rhoV)); |
---|
507 | |
---|
508 | trays([top+topdown:topdown:bot]).OutletV.F = (1 + tanh(1 * |
---|
509 | (trays([top+topdown:topdown:bot]).OutletV.P - |
---|
510 | trays([top+topdown:topdown:bot]).InletL.P)/"Pa"))/2 * |
---|
511 | trays([top+topdown:topdown:bot]).Ah/trays([top+topdown:topdown:bot]).vV * |
---|
512 | sqrt(2*(trays([top+topdown:topdown:bot]).OutletV.P - |
---|
513 | trays([top+topdown:topdown:bot]).InletL.P + 1e-8 * "atm") / |
---|
514 | (trays([top+topdown:topdown:bot]).alfa*trays([top+topdown:topdown:bot]).rhoV)); |
---|
515 | |
---|
516 | CONNECTIONS |
---|
517 | #vapor |
---|
518 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
---|
519 | trays(top).OutletV to cond.InletV; |
---|
520 | |
---|
521 | #liquid |
---|
522 | cond.OutletL to sptop.Inlet; |
---|
523 | sptop.Outlet2 to pump1.Inlet; |
---|
524 | pump1.Outlet to trays(top).InletL; |
---|
525 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
---|
526 | end |
---|
527 | |
---|
528 | |
---|
529 | #* ------------------------------------------------------------------- |
---|
530 | * Refluxed Stripping Column with: |
---|
531 | * |
---|
532 | * - NTrays like tray; |
---|
533 | * - a steady state condenser (with subcooling); |
---|
534 | * - a vessel drum (layed cilinder); |
---|
535 | * - a splitter which separate reflux and distillate; |
---|
536 | * - a pump in reflux stream. |
---|
537 | * |
---|
538 | * ------------------------------------------------------------------*# |
---|
539 | Model Refluxed_Stripping_subcooling |
---|
540 | PARAMETERS |
---|
541 | ext PP as CalcObject; |
---|
542 | ext NComp as Integer; |
---|
543 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
544 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
---|
545 | top as Integer(Brief="Number of top tray"); |
---|
546 | bot as Integer(Brief="Number of bottom tray"); |
---|
547 | |
---|
548 | SET |
---|
549 | top = (NTrays-1)*(1-topdown)/2+1; |
---|
550 | bot = NTrays/top; |
---|
551 | |
---|
552 | VARIABLES |
---|
553 | trays(NTrays) as tray; |
---|
554 | cond as condenserSteady; |
---|
555 | ttop as tank_cylindrical; |
---|
556 | sptop as splitter; |
---|
557 | pump1 as pump; |
---|
558 | |
---|
559 | EQUATIONS |
---|
560 | "Pressure Drop through the tray" |
---|
561 | trays(top).OutletV.F = (1 + tanh(1 * (trays(top).OutletV.P - ttop.Outlet.P)/"Pa"))/2 * |
---|
562 | trays(top).Ah/trays(top).vV * sqrt(2*(trays(top).OutletV.P - |
---|
563 | ttop.Outlet.P + 1e-8 * "atm") / (trays(top).alfa*trays(top).rhoV)); |
---|
564 | |
---|
565 | trays([top+topdown:topdown:bot]).OutletV.F = (1 + tanh(1 * |
---|
566 | (trays([top+topdown:topdown:bot]).OutletV.P - |
---|
567 | trays([top+topdown:topdown:bot]).InletL.P)/"Pa"))/2 * |
---|
568 | trays([top+topdown:topdown:bot]).Ah/trays([top+topdown:topdown:bot]).vV * |
---|
569 | sqrt(2*(trays([top+topdown:topdown:bot]).OutletV.P - |
---|
570 | trays([top+topdown:topdown:bot]).InletL.P + 1e-8 * "atm") / |
---|
571 | (trays([top+topdown:topdown:bot]).alfa*trays([top+topdown:topdown:bot]).rhoV)); |
---|
572 | |
---|
573 | CONNECTIONS |
---|
574 | #vapor |
---|
575 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
---|
576 | trays(top).OutletV to cond.InletV; |
---|
577 | |
---|
578 | #liquid |
---|
579 | cond.OutletL to ttop.Inlet; |
---|
580 | ttop.Outlet to sptop.Inlet; |
---|
581 | sptop.Outlet2 to pump1.Inlet; |
---|
582 | pump1.Outlet to trays(top).InletL; |
---|
583 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
---|
584 | end |
---|
585 | |
---|
586 | |
---|
587 | #*---------------------------------------------------------------------- |
---|
588 | * Model of a Refluxed Absorption column containing: |
---|
589 | * - NTrays like tray; |
---|
590 | * - dymamic condenser without subcooling; |
---|
591 | * - a splitter which separate reflux and distillate; |
---|
592 | * - a pump in reflux stream; |
---|
593 | *---------------------------------------------------------------------*# |
---|
594 | Model Refluxed_Absorption |
---|
595 | PARAMETERS |
---|
596 | ext PP as CalcObject; |
---|
597 | ext NComp as Integer; |
---|
598 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
599 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
---|
600 | top as Integer(Brief="Number of top tray"); |
---|
601 | bot as Integer(Brief="Number of bottom tray"); |
---|
602 | |
---|
603 | SET |
---|
604 | top = (NTrays-1)*(1-topdown)/2+1; |
---|
605 | bot = NTrays/top; |
---|
606 | |
---|
607 | VARIABLES |
---|
608 | trays(NTrays) as tray; |
---|
609 | cond as condenser; |
---|
610 | sptop as splitter; |
---|
611 | pump1 as pump; |
---|
612 | |
---|
613 | EQUATIONS |
---|
614 | "Pressure Drop through the tray" |
---|
615 | trays(top).OutletV.F = (1 + tanh(1 * (trays(top).OutletV.P - cond.OutletL.P)/"Pa"))/2 * |
---|
616 | trays(top).Ah/trays(top).vV * sqrt(2*(trays(top).OutletV.P - |
---|
617 | cond.OutletL.P + 1e-8 * "atm") / (trays(top).alfa*trays(top).rhoV)); |
---|
618 | |
---|
619 | trays([top+topdown:topdown:bot]).OutletV.F = (1 + tanh(1 * |
---|
620 | (trays([top+topdown:topdown:bot]).OutletV.P - |
---|
621 | trays([top+topdown:topdown:bot]).InletL.P)/"Pa"))/2 * |
---|
622 | trays([top+topdown:topdown:bot]).Ah/trays([top+topdown:topdown:bot]).vV * |
---|
623 | sqrt(2*(trays([top+topdown:topdown:bot]).OutletV.P - |
---|
624 | trays([top+topdown:topdown:bot]).InletL.P + 1e-8 * "atm") / |
---|
625 | (trays([top+topdown:topdown:bot]).alfa*trays([top+topdown:topdown:bot]).rhoV)); |
---|
626 | |
---|
627 | CONNECTIONS |
---|
628 | #vapor |
---|
629 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
---|
630 | trays(top).OutletV to cond.InletV; |
---|
631 | |
---|
632 | #liquid |
---|
633 | cond.OutletL to cond.InletV; |
---|
634 | cond.OutletL to sptop.Inlet; |
---|
635 | sptop.Outlet2 to pump1.Inlet; |
---|
636 | pump1.Outlet to trays(top).InletL; |
---|
637 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
---|
638 | end |
---|
639 | |
---|
640 | |
---|
641 | #* ------------------------------------------------------------------- |
---|
642 | * Refluxed Absorption Column with: |
---|
643 | * |
---|
644 | * - NTrays like tray; |
---|
645 | * - a steady state condenser (with subcooling); |
---|
646 | * - a vessel drum (layed cilinder); |
---|
647 | * - a splitter which separate reflux and distillate; |
---|
648 | * - a pump in reflux stream. |
---|
649 | * |
---|
650 | * ------------------------------------------------------------------*# |
---|
651 | Model Refluxed_Absorption_subcooling |
---|
652 | PARAMETERS |
---|
653 | ext PP as CalcObject; |
---|
654 | ext NComp as Integer; |
---|
655 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
656 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
---|
657 | top as Integer(Brief="Number of top tray"); |
---|
658 | bot as Integer(Brief="Number of bottom tray"); |
---|
659 | |
---|
660 | SET |
---|
661 | top = (NTrays-1)*(1-topdown)/2+1; |
---|
662 | bot = NTrays/top; |
---|
663 | |
---|
664 | VARIABLES |
---|
665 | trays(NTrays) as tray; |
---|
666 | cond as condenserSteady; |
---|
667 | ttop as tank_cylindrical; |
---|
668 | sptop as splitter; |
---|
669 | pump1 as pump; |
---|
670 | |
---|
671 | EQUATIONS |
---|
672 | "Pressure Drop through the tray" |
---|
673 | trays(top).OutletV.F = (1 + tanh(1 * (trays(top).OutletV.P - ttop.Outlet.P)/"Pa"))/2 * |
---|
674 | trays(top).Ah/trays(top).vV * sqrt(2*(trays(top).OutletV.P - |
---|
675 | ttop.Outlet.P + 1e-8 * "atm") / (trays(top).alfa*trays(top).rhoV)); |
---|
676 | |
---|
677 | trays([top+topdown:topdown:bot]).OutletV.F = (1 + tanh(1 * |
---|
678 | (trays([top+topdown:topdown:bot]).OutletV.P - |
---|
679 | trays([top+topdown:topdown:bot]).InletL.P)/"Pa"))/2 * |
---|
680 | trays([top+topdown:topdown:bot]).Ah/trays([top+topdown:topdown:bot]).vV * |
---|
681 | sqrt(2*(trays([top+topdown:topdown:bot]).OutletV.P - |
---|
682 | trays([top+topdown:topdown:bot]).InletL.P + 1e-8 * "atm") / |
---|
683 | (trays([top+topdown:topdown:bot]).alfa*trays([top+topdown:topdown:bot]).rhoV)); |
---|
684 | |
---|
685 | CONNECTIONS |
---|
686 | #vapor |
---|
687 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
---|
688 | trays(top).OutletV to cond.InletV; |
---|
689 | |
---|
690 | #liquid |
---|
691 | cond.OutletL to ttop.Inlet; |
---|
692 | ttop.Outlet to sptop.Inlet; |
---|
693 | sptop.Outlet2 to pump1.Inlet; |
---|
694 | pump1.Outlet to trays(top).InletL; |
---|
695 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
---|
696 | end |
---|
697 | |
---|
698 | |
---|
699 | #* ------------------------------------------------------------------- |
---|
700 | * Reboiled Stripping Column model with: |
---|
701 | * |
---|
702 | * - NTrays like tray; |
---|
703 | * - a kettle reboiler; |
---|
704 | * |
---|
705 | * ------------------------------------------------------------------*# |
---|
706 | Model Reboiled_Stripping_kettle |
---|
707 | PARAMETERS |
---|
708 | ext PP as CalcObject; |
---|
709 | ext NComp as Integer; |
---|
710 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
711 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
---|
712 | top as Integer(Brief="Number of top tray"); |
---|
713 | bot as Integer(Brief="Number of bottom tray"); |
---|
714 | |
---|
715 | SET |
---|
716 | top = (NTrays-1)*(1-topdown)/2+1; |
---|
717 | bot = NTrays/top; |
---|
718 | |
---|
719 | VARIABLES |
---|
720 | trays(NTrays) as tray; |
---|
721 | reb as reboiler; |
---|
722 | |
---|
723 | EQUATIONS |
---|
724 | if (reb.OutletV.P > reb.InletL.P) then |
---|
725 | "Pressure Drop through the tray" |
---|
726 | reb.OutletV.F = trays(bot).Ah/reb.vV * sqrt((reb.OutletV.P - trays(bot).OutletL.P) |
---|
727 | / (trays(bot).beta*reb.rhoV) ); |
---|
728 | else |
---|
729 | "Prato selado" |
---|
730 | reb.OutletV.F = 0.0 * "mol/s"; |
---|
731 | end |
---|
732 | |
---|
733 | "Pressure Drop through the tray" |
---|
734 | trays([top:topdown:bot]).OutletV.F = (1 + tanh(1 * |
---|
735 | (trays([top:topdown:bot]).OutletV.P - |
---|
736 | trays([top:topdown:bot]).InletL.P)/"Pa"))/2 * |
---|
737 | trays([top:topdown:bot]).Ah/trays([top:topdown:bot]).vV * |
---|
738 | sqrt(2*(trays([top:topdown:bot]).OutletV.P - |
---|
739 | trays([top:topdown:bot]).InletL.P + 1e-8 * "atm") / |
---|
740 | (trays([top:topdown:bot]).alfa*trays([top:topdown:bot]).rhoV)); |
---|
741 | |
---|
742 | CONNECTIONS |
---|
743 | #vapor |
---|
744 | reb.OutletV to trays(bot).InletV; |
---|
745 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
---|
746 | |
---|
747 | #liquid |
---|
748 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
---|
749 | trays(bot).OutletL to reb.InletL; |
---|
750 | end |
---|
751 | |
---|
752 | |
---|
753 | #* ------------------------------------------------------------------- |
---|
754 | * Reboiled Stripping Column model with: |
---|
755 | * |
---|
756 | * - NTrays like tray; |
---|
757 | * - a vessel in the bottom of column; |
---|
758 | * - a splitter which separate the bottom product and the stream to reboiler; |
---|
759 | * - steady state reboiler (thermosyphon); |
---|
760 | * |
---|
761 | * ------------------------------------------------------------------*# |
---|
762 | Model Reboiled_Stripping_thermosyphon |
---|
763 | PARAMETERS |
---|
764 | ext PP as CalcObject; |
---|
765 | ext NComp as Integer; |
---|
766 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
767 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
---|
768 | top as Integer(Brief="Number of top tray"); |
---|
769 | bot as Integer(Brief="Number of bottom tray"); |
---|
770 | |
---|
771 | SET |
---|
772 | top = (NTrays-1)*(1-topdown)/2+1; |
---|
773 | bot = NTrays/top; |
---|
774 | |
---|
775 | VARIABLES |
---|
776 | trays(NTrays) as tray; |
---|
777 | reb as reboilerSteady; |
---|
778 | spbottom as splitter; |
---|
779 | tbottom as tank; |
---|
780 | |
---|
781 | EQUATIONS |
---|
782 | if (reb.OutletV.P > reb.InletL.P) then |
---|
783 | "Pressure Drop through the tray" |
---|
784 | reb.OutletV.F = trays(bot).Ah/reb.vV * sqrt((reb.OutletV.P - trays(bot).OutletL.P) |
---|
785 | / (trays(bot).alfa*reb.rhoV) ); |
---|
786 | else |
---|
787 | "Prato selado" |
---|
788 | reb.OutletV.F = 0.0 * "mol/s"; |
---|
789 | end |
---|
790 | |
---|
791 | "Pressure Drop through the tray" |
---|
792 | trays([top:topdown:bot]).OutletV.F = (1 + tanh(1 * |
---|
793 | (trays([top:topdown:bot]).OutletV.P - |
---|
794 | trays([top:topdown:bot]).InletL.P)/"Pa"))/2 * |
---|
795 | trays([top:topdown:bot]).Ah/trays([top:topdown:bot]).vV * |
---|
796 | sqrt(2*(trays([top:topdown:bot]).OutletV.P - |
---|
797 | trays([top:topdown:bot]).InletL.P + 1e-8 * "atm") / |
---|
798 | (trays([top:topdown:bot]).alfa*trays([top:topdown:bot]).rhoV)); |
---|
799 | |
---|
800 | CONNECTIONS |
---|
801 | #vapor |
---|
802 | reb.OutletV to trays(bot).InletV; |
---|
803 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
---|
804 | |
---|
805 | #liquid |
---|
806 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
---|
807 | trays(bot).OutletL to tbottom.Inlet; |
---|
808 | tbottom.Outlet to spbottom.Inlet; |
---|
809 | spbottom.Outlet2 to reb.InletL; |
---|
810 | end |
---|
811 | |
---|
812 | |
---|
813 | #* ------------------------------------------------------------------- |
---|
814 | * Reboiled Absorption Column model with: |
---|
815 | * |
---|
816 | * - NTrays like tray; |
---|
817 | * - a kettle reboiler; |
---|
818 | * |
---|
819 | * ------------------------------------------------------------------*# |
---|
820 | Model Reboiled_Absorption_kettle |
---|
821 | PARAMETERS |
---|
822 | ext PP as CalcObject; |
---|
823 | ext NComp as Integer; |
---|
824 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
825 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
---|
826 | top as Integer(Brief="Number of top tray"); |
---|
827 | bot as Integer(Brief="Number of bottom tray"); |
---|
828 | |
---|
829 | SET |
---|
830 | top = (NTrays-1)*(1-topdown)/2+1; |
---|
831 | bot = NTrays/top; |
---|
832 | |
---|
833 | VARIABLES |
---|
834 | trays(NTrays) as tray; |
---|
835 | reb as reboiler; |
---|
836 | |
---|
837 | EQUATIONS |
---|
838 | if (reb.OutletV.P > reb.InletL.P) then |
---|
839 | "Pressure Drop through the tray" |
---|
840 | reb.OutletV.F = trays(bot).Ah/reb.vV * sqrt((reb.OutletV.P - trays(bot).OutletL.P) |
---|
841 | / (trays(bot).beta*reb.rhoV) ); |
---|
842 | else |
---|
843 | "Prato selado" |
---|
844 | reb.OutletV.F = 0.0 * "mol/s"; |
---|
845 | end |
---|
846 | |
---|
847 | "Pressure Drop through the tray" |
---|
848 | trays([top:topdown:bot]).OutletV.F = (1 + tanh(1 * |
---|
849 | (trays([top:topdown:bot]).OutletV.P - |
---|
850 | trays([top:topdown:bot]).InletL.P)/"Pa"))/2 * |
---|
851 | trays([top:topdown:bot]).Ah/trays([top:topdown:bot]).vV * |
---|
852 | sqrt(2*(trays([top:topdown:bot]).OutletV.P - |
---|
853 | trays([top:topdown:bot]).InletL.P + 1e-8 * "atm") / |
---|
854 | (trays([top:topdown:bot]).alfa*trays([top:topdown:bot]).rhoV)); |
---|
855 | |
---|
856 | CONNECTIONS |
---|
857 | #vapor |
---|
858 | reb.OutletV to trays(bot).InletV; |
---|
859 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
---|
860 | |
---|
861 | #liquid |
---|
862 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
---|
863 | trays(bot).OutletL to reb.InletL; |
---|
864 | end |
---|
865 | |
---|
866 | |
---|
867 | #* ------------------------------------------------------------------- |
---|
868 | * Reboiled Absorption Column model with: |
---|
869 | * |
---|
870 | * - NTrays like tray; |
---|
871 | * - a vessel in the bottom of column; |
---|
872 | * - a splitter which separate the bottom product and the stream to reboiler; |
---|
873 | * - steady state reboiler (thermosyphon); |
---|
874 | * |
---|
875 | * ------------------------------------------------------------------*# |
---|
876 | Model Reboiled_Absorption_thermosyphon |
---|
877 | PARAMETERS |
---|
878 | ext PP as CalcObject; |
---|
879 | ext NComp as Integer; |
---|
880 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
881 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
---|
882 | top as Integer(Brief="Number of top tray"); |
---|
883 | bot as Integer(Brief="Number of bottom tray"); |
---|
884 | |
---|
885 | SET |
---|
886 | top = (NTrays-1)*(1-topdown)/2+1; |
---|
887 | bot = NTrays/top; |
---|
888 | |
---|
889 | VARIABLES |
---|
890 | trays(NTrays) as tray; |
---|
891 | reb as reboilerSteady; |
---|
892 | spbottom as splitter; |
---|
893 | tbottom as tank; |
---|
894 | |
---|
895 | EQUATIONS |
---|
896 | if (reb.OutletV.P > reb.InletL.P) then |
---|
897 | "Pressure Drop through the tray" |
---|
898 | reb.OutletV.F = trays(bot).Ah/reb.vV * sqrt((reb.OutletV.P - trays(bot).OutletL.P) |
---|
899 | / (trays(bot).alfa*reb.rhoV) ); |
---|
900 | else |
---|
901 | "Prato selado" |
---|
902 | reb.OutletV.F = 0.0 * "mol/s"; |
---|
903 | end |
---|
904 | |
---|
905 | "Pressure Drop through the tray" |
---|
906 | trays([top:topdown:bot]).OutletV.F = (1 + tanh(1 * |
---|
907 | (trays([top:topdown:bot]).OutletV.P - |
---|
908 | trays([top:topdown:bot]).InletL.P)/"Pa"))/2 * |
---|
909 | trays([top:topdown:bot]).Ah/trays([top:topdown:bot]).vV * |
---|
910 | sqrt(2*(trays([top:topdown:bot]).OutletV.P - |
---|
911 | trays([top:topdown:bot]).InletL.P + 1e-8 * "atm") / |
---|
912 | (trays([top:topdown:bot]).alfa*trays([top:topdown:bot]).rhoV)); |
---|
913 | |
---|
914 | CONNECTIONS |
---|
915 | #vapor |
---|
916 | reb.OutletV to trays(bot).InletV; |
---|
917 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
---|
918 | |
---|
919 | #liquid |
---|
920 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
---|
921 | trays(bot).OutletL to tbottom.Inlet; |
---|
922 | tbottom.Outlet to spbottom.Inlet; |
---|
923 | spbottom.Outlet2 to reb.InletL; |
---|
924 | end |
---|
925 | |
---|
926 | #* ------------------------------------------------------------------- |
---|
927 | * Reactive Distillation Column |
---|
928 | * |
---|
929 | * ------------------------------------------------------------------*# |
---|
930 | Model ReactiveDistillation |
---|
931 | PARAMETERS |
---|
932 | ext PP as CalcObject; |
---|
933 | ext NComp as Integer; |
---|
934 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
935 | |
---|
936 | VARIABLES |
---|
937 | trays(NTrays) as trayReact; |
---|
938 | cond as condenserReact; |
---|
939 | reb as reboilerReact; |
---|
940 | sp as splitter; |
---|
941 | p as pump; |
---|
942 | |
---|
943 | EQUATIONS |
---|
944 | if ( reb.OutletV.P > 1 * "atm" ) then |
---|
945 | "Pressure Drop through the tray" |
---|
946 | reb.OutletV.F = trays(1).Ah/reb.vV * sqrt((reb.OutletV.P - 1*"atm") / (0.15*reb.rhoV) ); |
---|
947 | else |
---|
948 | "Prato selado" |
---|
949 | reb.OutletV.F = 0.0 * "mol/s"; |
---|
950 | end |
---|
951 | |
---|
952 | CONNECTIONS |
---|
953 | #vapor |
---|
954 | reb.OutletV to trays([NTrays]).InletV; |
---|
955 | trays([2:NTrays]).OutletV to trays([1:NTrays-1]).InletV; |
---|
956 | trays(1).OutletV to cond.InletV; |
---|
957 | |
---|
958 | #liquid |
---|
959 | cond.OutletL to sp.Inlet; |
---|
960 | sp.Outlet2 to p.Inlet; |
---|
961 | p.Outlet to trays(1).InletL; |
---|
962 | trays([1:NTrays-1]).OutletL to trays([2:NTrays]).InletL; |
---|
963 | trays(NTrays).OutletL to reb.InletL; |
---|
964 | end |
---|