[86] | 1 | #*------------------------------------------------------------------- |
---|
| 2 | * EMSO Model Library (EML) Copyright (C) 2004 - 2007 ALSOC. |
---|
| 3 | * |
---|
| 4 | * This LIBRARY is free software; you can distribute it and/or modify |
---|
| 5 | * it under the therms of the ALSOC FREE LICENSE as available at |
---|
| 6 | * http://www.enq.ufrgs.br/alsoc. |
---|
| 7 | * |
---|
| 8 | * EMSO Copyright (C) 2004 - 2007 ALSOC, original code |
---|
| 9 | * from http://www.rps.eng.br Copyright (C) 2002-2004. |
---|
| 10 | * All rights reserved. |
---|
| 11 | * |
---|
| 12 | * EMSO is distributed under the therms of the ALSOC LICENSE as |
---|
| 13 | * available at http://www.enq.ufrgs.br/alsoc. |
---|
| 14 | * |
---|
| 15 | *-------------------------------------------------------------------- |
---|
| 16 | * Sample file for reaction column model |
---|
| 17 | *-------------------------------------------------------------------- |
---|
| 18 | * |
---|
| 19 | * This sample file needs VRTherm (www.vrtech.com.br) to run. |
---|
| 20 | * |
---|
| 21 | *---------------------------------------------------------------------- |
---|
| 22 | * Author: Paula B. Staudt |
---|
| 23 | * $Id: sample_columnReact.mso 86 2006-12-08 20:58:15Z paula $ |
---|
| 24 | *--------------------------------------------------------------------*# |
---|
[39] | 25 | using "controllers/PIDs"; |
---|
| 26 | using "stage_separators/column"; |
---|
| 27 | |
---|
| 28 | FlowSheet Startup_ReactiveDistillation |
---|
| 29 | PARAMETERS |
---|
| 30 | PP as CalcObject(Brief="Physical Properties",File="vrpp"); |
---|
| 31 | NComp as Integer; |
---|
| 32 | |
---|
| 33 | SET |
---|
| 34 | PP.Components = [ "acetic acid", "ethanol", "ethyl acetate", "water"]; |
---|
| 35 | PP.LiquidModel = "UNIFAC"; |
---|
| 36 | PP.VapourModel = "Ideal"; |
---|
| 37 | PP.Derivatives = 1; |
---|
| 38 | NComp = PP.NumberOfComponents; |
---|
| 39 | |
---|
| 40 | DEVICES |
---|
| 41 | col as ReactiveDistillation; |
---|
| 42 | feed as streamTP; |
---|
| 43 | zero as stream; |
---|
| 44 | PIDLreb as PID_Ideal_AW; |
---|
| 45 | PIDLcond as PID_Ideal_AW; |
---|
| 46 | PIDTreb as PID_Ideal_AW; |
---|
| 47 | PIDTcond as PID_Ideal_AW; |
---|
| 48 | |
---|
| 49 | VARIABLES |
---|
| 50 | Lreb_ad as Real; |
---|
| 51 | Lrebmin as length; |
---|
| 52 | Lrebmax as length; |
---|
| 53 | Lcond_ad as Real; |
---|
| 54 | Lcondmin as length; |
---|
| 55 | Lcondmax as length; |
---|
| 56 | Treb_ad as Real; |
---|
| 57 | Trebmin as temperature; |
---|
| 58 | Trebmax as temperature; |
---|
| 59 | Tcond_ad as Real; |
---|
| 60 | Tcondmin as temperature; |
---|
| 61 | Tcondmax as temperature; |
---|
| 62 | |
---|
| 63 | CONNECTIONS |
---|
| 64 | feed to col.trays(5).Inlet; |
---|
| 65 | zero to col.reb.Inlet; |
---|
| 66 | zero to col.trays([1:4]).Inlet; |
---|
| 67 | zero to col.trays([6:col.NTrays]).Inlet; |
---|
| 68 | |
---|
| 69 | EQUATIONS |
---|
| 70 | "Equações do PID para controle de nível" |
---|
| 71 | Lreb_ad*(Lrebmax-Lrebmin)=col.reb.Level-Lrebmin; |
---|
| 72 | PIDLreb.Ports.input=Lreb_ad; |
---|
| 73 | Lcond_ad*(Lcondmax-Lcondmin)=col.cond.Level-Lcondmin; |
---|
| 74 | PIDLcond.Ports.input=Lcond_ad; |
---|
| 75 | "Equações do PID para controle de temperatura" |
---|
| 76 | Treb_ad*(Trebmax-Trebmin)=col.reb.OutletL.T-Trebmin; |
---|
| 77 | PIDTreb.Ports.input=Treb_ad; |
---|
| 78 | Tcond_ad*(Tcondmax-Tcondmin)=col.cond.OutletL.T-Tcondmin; |
---|
| 79 | PIDTcond.Ports.input=Tcond_ad; |
---|
| 80 | |
---|
| 81 | col.sp.frac = 0.1; |
---|
| 82 | |
---|
| 83 | col.sp.Outlet1.F = 0.5 * PIDLcond.Ports.output * "mol/s"; |
---|
| 84 | col.reb.OutletL.F = 1.736 * PIDLreb.Ports.output * "mol/s"; |
---|
| 85 | |
---|
| 86 | PIDTreb.Ports.setPoint= (367 * "K" - Trebmin)/(Trebmax-Trebmin); |
---|
| 87 | PIDTcond.Ports.setPoint= (344 * "K" - Trebmin)/(Trebmax-Trebmin); |
---|
[47] | 88 | col.cond.Q = 10* "J/s" - (5 * PIDTcond.Ports.output) * "kJ/s"; |
---|
[39] | 89 | |
---|
| 90 | #verificando a partida do refervedor |
---|
| 91 | if time < 200 * "s" then |
---|
| 92 | col.reb.startup = 1; |
---|
| 93 | else |
---|
| 94 | col.reb.startup = 0; |
---|
| 95 | end |
---|
| 96 | |
---|
| 97 | if col.reb.startup then |
---|
| 98 | col.reb.Q = 0 * PIDTreb.Ports.output * "kJ/s"; |
---|
| 99 | else |
---|
[47] | 100 | col.reb.Q = 1e1 * PIDTreb.Ports.output * "kJ/s"; |
---|
[39] | 101 | end |
---|
| 102 | |
---|
| 103 | "Reaction - Trays" |
---|
| 104 | col.trays.r = exp(-7150*"K"/col.trays.OutletL.T)* |
---|
| 105 | (4.85e4*col.trays.C(1)*col.trays.C(2) - 1.23e4*col.trays.C(3)*col.trays.C(4))*"l/mol/s"; |
---|
| 106 | "Reaction - Reboiler" |
---|
| 107 | col.reb.r = exp(-7150*"K"/col.reb.OutletL.T)*(4.85e4*col.reb.C(1)*col.reb.C(2) |
---|
| 108 | - 1.23e4*col.reb.C(3)*col.reb.C(4)) * "l/mol/s"; |
---|
| 109 | "Reaction - Condenser" |
---|
| 110 | col.cond.r = exp(-7150*"K"/col.cond.OutletL.T)*(4.85e4*col.cond.C(1)*col.cond.C(2) |
---|
| 111 | - 1.23e4*col.cond.C(3)*col.cond.C(4)) * "l/mol/s"; |
---|
| 112 | |
---|
| 113 | |
---|
| 114 | SPECIFY |
---|
| 115 | feed.F = 1.076 * "mol/s"; |
---|
| 116 | feed.T = 300 * "K"; |
---|
| 117 | feed.P = 1.0 * "atm"; |
---|
| 118 | feed.z = [0.4962, 0.4808, 0, 0.0229]; |
---|
| 119 | |
---|
| 120 | zero.F = 0 * "kmol/h"; |
---|
| 121 | zero.T = 353 * "K"; |
---|
| 122 | zero.P = 1 * "atm"; |
---|
| 123 | zero.z = [0.4962, 0.4808, 0, 0.0229]; |
---|
| 124 | zero.v = 0; |
---|
| 125 | zero.h = 0 * "J/mol"; |
---|
| 126 | |
---|
| 127 | col.p.dP = 0.95 * "atm" - col.sp.Outlet2.P; |
---|
| 128 | col.trays.Emv = 1; |
---|
| 129 | |
---|
| 130 | # Variáveis dos PID's especificadas |
---|
| 131 | PIDLreb.Parameters.tau = 1*"s"; |
---|
| 132 | PIDLreb.Parameters.tauSet=1*"s"; |
---|
| 133 | PIDLreb.Parameters.bias = 0; |
---|
| 134 | PIDLreb.Parameters.alpha=1; |
---|
| 135 | PIDLreb.Parameters.gamma=1; |
---|
| 136 | PIDLreb.Parameters.beta=1; |
---|
| 137 | PIDLreb.Parameters.gain=1; |
---|
| 138 | PIDLreb.Parameters.intTime=100*"s"; |
---|
| 139 | PIDLreb.Parameters.derivTime=1*"s"; |
---|
| 140 | PIDLreb.Options.action=-1; |
---|
| 141 | PIDLreb.Options.clip=1; |
---|
| 142 | PIDLreb.Options.autoMan=0; |
---|
| 143 | PIDLreb.Ports.setPoint=(0.5 * "m" - Lrebmin)/(Lrebmax-Lrebmin); |
---|
| 144 | |
---|
| 145 | PIDLcond.Parameters.tau = 1*"s"; |
---|
| 146 | PIDLcond.Parameters.tauSet=1*"s"; |
---|
| 147 | PIDLcond.Parameters.bias = 0; |
---|
| 148 | PIDLcond.Parameters.alpha=1; |
---|
| 149 | PIDLcond.Parameters.gamma=1; |
---|
| 150 | PIDLcond.Parameters.beta=1; |
---|
| 151 | PIDLcond.Parameters.gain=1; |
---|
| 152 | PIDLcond.Parameters.intTime=10*"s"; |
---|
| 153 | PIDLcond.Parameters.derivTime=1*"s"; |
---|
| 154 | PIDLcond.Options.action=-1; |
---|
| 155 | PIDLcond.Options.clip=1; |
---|
| 156 | PIDLcond.Options.autoMan=0; |
---|
| 157 | PIDLcond.Ports.setPoint=(0.5 * "m" - Lcondmin)/(Lcondmax-Lcondmin); |
---|
| 158 | |
---|
| 159 | PIDTreb.Parameters.tau = 1*"s"; |
---|
| 160 | PIDTreb.Parameters.tauSet=1*"s"; |
---|
| 161 | PIDTreb.Parameters.bias = 0.2; |
---|
| 162 | PIDTreb.Parameters.alpha=0.2; |
---|
| 163 | PIDTreb.Parameters.gamma=1; |
---|
| 164 | PIDTreb.Parameters.beta=1; |
---|
| 165 | PIDTreb.Parameters.gain=0.9; |
---|
| 166 | PIDTreb.Parameters.intTime=10*"s"; |
---|
| 167 | PIDTreb.Parameters.derivTime=1*"s"; |
---|
| 168 | PIDTreb.Options.action=1; |
---|
| 169 | PIDTreb.Options.clip=1; |
---|
| 170 | PIDTreb.Options.autoMan=0; |
---|
| 171 | |
---|
| 172 | PIDTcond.Parameters.tau = 1*"s"; |
---|
| 173 | PIDTcond.Parameters.tauSet=1*"s"; |
---|
| 174 | PIDTcond.Parameters.bias = 0.2; |
---|
| 175 | PIDTcond.Parameters.alpha=0.2; |
---|
| 176 | PIDTcond.Parameters.gamma=1; |
---|
| 177 | PIDTcond.Parameters.beta=1; |
---|
| 178 | PIDTcond.Parameters.gain=1; |
---|
| 179 | PIDTcond.Parameters.intTime=10*"s"; |
---|
| 180 | PIDTcond.Parameters.derivTime=1*"s"; |
---|
| 181 | PIDTcond.Options.action=-1; |
---|
| 182 | PIDTcond.Options.clip=1; |
---|
| 183 | PIDTcond.Options.autoMan=0; |
---|
| 184 | |
---|
| 185 | "Valores limites para normalizações" |
---|
| 186 | Lrebmax=0.8*"m"; |
---|
| 187 | Lrebmin=0.1*"m"; |
---|
| 188 | Lcondmax=0.8*"m"; |
---|
| 189 | Lcondmin=0.1*"m"; |
---|
| 190 | Trebmax=400*"K"; |
---|
| 191 | Trebmin=200*"K"; |
---|
| 192 | Tcondmax=380*"K"; |
---|
| 193 | Tcondmin=250*"K"; |
---|
| 194 | |
---|
| 195 | col.cond.OutletV.F = 0 * "kmol/h"; |
---|
| 196 | |
---|
| 197 | SET |
---|
| 198 | col.NTrays = 11; |
---|
| 199 | |
---|
| 200 | col.trays.stoic = [-1, -1, 1, 1]; |
---|
| 201 | col.cond.stoic = [-1, -1, 1, 1]; |
---|
| 202 | col.reb.stoic = [-1, -1, 1, 1]; |
---|
| 203 | col.cond.V = 6 * "l"; |
---|
| 204 | col.cond.Across = 6 * "l/m"; |
---|
| 205 | |
---|
| 206 | col.trays.V = 0.0961 * "m^3"; # 0.34* (3.14*0.6*0.6/4) |
---|
| 207 | col.trays.Ah = 0.04 * "m^2";#0.2 * "m^2"; |
---|
| 208 | col.trays.lw = 0.457 * "m"; |
---|
| 209 | col.trays.hw = 0.05 * "m"; |
---|
| 210 | col.trays.Q = 0 * "kW"; |
---|
| 211 | col.trays.beta = 0.8; |
---|
| 212 | col.trays.alfa = 5; |
---|
| 213 | col.trays.Ap = 0.07 * "m^2"; #0.24 * "m^2"; # 3.14*0.6*0.6/4 - 15% |
---|
| 214 | |
---|
| 215 | col.trays.Hr = 0 * "kJ/mol"; |
---|
| 216 | col.cond.Hr = 0 * "kJ/mol"; |
---|
| 217 | col.reb.Hr = 0 * "kJ/mol"; |
---|
| 218 | col.reb.V = 20 * "l"; |
---|
| 219 | col.reb.Across = 20 * "l/m"; |
---|
| 220 | |
---|
| 221 | col.reb.Pstartup = 1 * "atm"; |
---|
| 222 | col.trays.Pstartup = 1 * "atm"; |
---|
| 223 | col.cond.Pstartup = 1 * "atm"; |
---|
| 224 | |
---|
| 225 | INITIAL |
---|
| 226 | # condenser |
---|
| 227 | col.cond.OutletL.T = 300 *"K"; |
---|
| 228 | col.cond.Level = 0.1 * "m"; |
---|
| 229 | col.cond.OutletL.z([1:3]) = [0.4962, 0.4808, 0]; |
---|
| 230 | |
---|
| 231 | # reboiler |
---|
| 232 | col.reb.OutletL.T = 300 *"K"; |
---|
| 233 | col.reb.Level = 0.1 * "m"; |
---|
| 234 | col.reb.OutletL.z([1:3]) = [0.4962, 0.4808, 0]; |
---|
| 235 | |
---|
| 236 | # column trays |
---|
| 237 | col.trays.OutletL.T = 300 * "K"; |
---|
| 238 | col.trays.Level = 0.1 * col.trays.hw; |
---|
| 239 | col.trays.OutletL.z([1:3]) = [0.4962, 0.4808, 0]; |
---|
| 240 | |
---|
| 241 | OPTIONS |
---|
[47] | 242 | DAESolver = "dassl"; |
---|
| 243 | relativeAccuracy = 1e-2; |
---|
[39] | 244 | time = [0:200, 210:10:2000, 2100:100:20000]; |
---|
| 245 | end |
---|