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 | * Model of an yield reactor |
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17 | *---------------------------------------------------------------------- |
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18 | * |
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19 | * Description: |
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20 | * Modeling of a reactor based on an yield approach. |
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21 | * |
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22 | * Assumptions: |
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23 | * * single- and two-phases involved |
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24 | * * steady-state |
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25 | * |
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26 | * Specify: |
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27 | * * inlet stream |
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28 | * * component yield or |
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29 | * * reaction yield |
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30 | * |
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31 | *---------------------------------------------------------------------- |
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32 | * Author: Rodolfo Rodrigues |
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33 | * $Id$ |
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34 | *--------------------------------------------------------------------*# |
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35 | |
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36 | using "tank_basic"; |
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37 | |
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38 | |
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39 | #*--------------------------------------------------------------------- |
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40 | * only vapour phase |
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41 | *--------------------------------------------------------------------*# |
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42 | Model yield_vap as tank_vap |
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43 | ATTRIBUTES |
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44 | Pallete = true; |
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45 | Icon = "icon/cstr"; |
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46 | Brief = "Model of a generic vapour-phase yield CSTR"; |
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47 | Info = " |
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48 | == Assumptions == |
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49 | * only vapour-phase |
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50 | * steady-state |
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51 | |
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52 | == Specify == |
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53 | * inlet stream |
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54 | * component yield or |
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55 | * reaction yield |
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56 | "; |
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57 | |
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58 | PARAMETERS |
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59 | NReac as Integer (Brief="Number of reactions", Default=1); |
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60 | KComp as Integer (Brief="Key component", Lower=1, Default=1); |
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61 | |
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62 | VARIABLES |
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63 | out Outlet as vapour_stream(Brief="Outlet stream", PosX=1, PosY=1, Symbol="_{out}"); |
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64 | rate(NComp) as reaction_mol (Brief="Overall component rate of reaction"); |
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65 | conv(NComp) as Real (Brief="Fractional conversion of component", Symbol="X", Default=0); |
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66 | |
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67 | yield(NComp) as Real (Brief="Molar component yield (global)", Symbol="Y_G"); |
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68 | yield_(NComp) as Real (Brief="Molar reaction yield (instantaneous)", Symbol="Y_I"); |
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69 | |
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70 | EQUATIONS |
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71 | "Outlet stream" |
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72 | Outlet.F*Outlet.z = Outletm.F*Outletm.z + rate*Tank.V; |
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73 | |
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74 | "Rate of reaction" |
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75 | rate*Tank.V = Outletm.F*(yield/(1 + yield(KComp))*Outletm.z(KComp) - Outletm.z); |
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76 | |
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77 | "Instantaneous yield" |
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78 | rate = yield_*rate(KComp); |
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79 | |
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80 | "Mechanical equilibrium" |
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81 | Outlet.P = Outletm.P; |
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82 | |
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83 | "Energy balance" |
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84 | Outlet.F*Outlet.h = Outletm.F*Outletm.h; |
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85 | |
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86 | for i in [1:NComp] do |
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87 | if (Outletm.z(i) > 1e-16) then |
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88 | "Molar conversion" |
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89 | Outlet.F*Outlet.z(i) = Outletm.F*Outletm.z(i)*(1 - conv(i)); |
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90 | else if (Outlet.z(i) > 0) then |
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91 | "Molar conversion" |
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92 | conv(i) = 1; # ? |
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93 | else |
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94 | "Molar conversion" |
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95 | conv(i) = 0; # ? |
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96 | end |
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97 | end |
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98 | end |
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99 | end |
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100 | |
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101 | |
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102 | #*--------------------------------------------------------------------- |
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103 | * only liquid phase |
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104 | *--------------------------------------------------------------------*# |
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105 | Model yield_liq as tank_liq |
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106 | ATTRIBUTES |
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107 | Pallete = true; |
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108 | Icon = "icon/cstr"; |
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109 | Brief = "Model of a generic liquid-phase yield CSTR"; |
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110 | Info = " |
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111 | == Assumptions == |
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112 | * only liquid-phase |
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113 | * steady-state |
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114 | |
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115 | == Specify == |
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116 | * inlet stream |
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117 | * component yield or |
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118 | * reaction yield |
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119 | "; |
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120 | |
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121 | PARAMETERS |
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122 | NReac as Integer (Brief="Number of reactions", Default=1); |
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123 | KComp as Integer (Brief="Key component", Lower=1, Default=1); |
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124 | |
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125 | VARIABLES |
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126 | out Outlet as liquid_stream(Brief="Outlet stream", PosX=1, PosY=1, Symbol="_{out}"); |
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127 | rate(NComp) as reaction_mol (Brief="Overall component rate of reaction"); |
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128 | conv(NComp) as Real (Brief="Fractional conversion of component", Symbol="X", Default=0); |
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129 | |
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130 | yield(NComp) as Real (Brief="Molar component yield (global)", Symbol="Y_G"); |
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131 | yield_(NComp) as Real (Brief="Molar reaction yield (instantaneous)", Symbol="Y_I"); |
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132 | |
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133 | EQUATIONS |
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134 | "Outlet stream" |
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135 | Outlet.F*Outlet.z = Outletm.F*Outletm.z + rate*Tank.V; |
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136 | |
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137 | "Rate of reaction" |
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138 | rate*Tank.V = Outletm.F*(yield/(1 + yield(KComp))*Outletm.z(KComp) - Outletm.z); |
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139 | |
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140 | "Molar reaction yield" |
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141 | rate = yield_*rate(KComp); |
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142 | |
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143 | "Mechanical equilibrium" |
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144 | Outlet.P = Outletm.P; |
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145 | |
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146 | "Energy balance" |
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147 | Outlet.F*Outlet.h = Outletm.F*Outletm.h; |
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148 | |
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149 | for i in [1:NComp] do |
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150 | if (Outletm.z(i) > 0) then |
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151 | "Molar conversion" |
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152 | Outlet.F*Outlet.z(i) = Outletm.F*Outletm.z(i)*(1 - conv(i)); |
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153 | else if (Outlet.z(i) > 0) then |
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154 | "Molar conversion" |
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155 | conv(i) = 1; # ? |
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156 | else |
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157 | "Molar conversion" |
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158 | conv(i) = 0; # ? |
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159 | end |
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160 | end |
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161 | end |
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162 | end |
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