source: branches/gui/sample/stage_separators/sample_column.mso @ 628

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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 column model
17*--------------------------------------------------------------------
18*
19* This sample file needs VRTherm DEMO(www.vrtech.com.br) to run
20* SectionColumn_Test and needs VRTherm full to run the distillation
21* column flowsheet.
22*
23*----------------------------------------------------------------------
24* Author: Paula B. Staudt
25* $Id: sample_column.mso 580 2008-07-26 19:34:58Z bicca $
26*--------------------------------------------------------------------*#
27
28using "stage_separators/column";
29using "controllers/PIDIncr";
30
31# column section with 2 trays
32FlowSheet SectionColumn_Test_with2tray
33        PARAMETERS
34        PP      as Plugin(Brief="Physical Properties",
35                Type="PP",
36                Components = [ "isobutane", "benzene"],
37                LiquidModel = "PR",
38                VapourModel = "PR"
39        );
40        NComp   as Integer;
41
42        SET
43        NComp = PP.NumberOfComponents;
44       
45        DEVICES
46        sec as Section_Column;
47        feed as liquid_stream;
48        reb as vapour_stream;
49        cond as liquid_stream;
50        zero as stream;
51       
52        CONNECTIONS
53        feed to sec.trays(2).Inlet;
54        zero to sec.trays(1).Inlet;
55        reb to sec.trays(2).InletV;
56        cond to sec.trays(1).InletL;
57       
58        SPECIFY
59        feed.F = 113.4 * 'kmol/h';
60        feed.T = 291 * 'K';
61        feed.P = 168.3 * 'kPa';
62        feed.z = [0.5, 0.5];
63
64        zero.F = 0 * 'kmol/h';
65        zero.T = 300 * 'K';
66        zero.P = 1 * 'atm';
67        zero.z = [0.5, 0.5];
68        zero.v = 0;
69        zero.h = 0 * 'J/mol';
70       
71        cond.F = 68 * 'kmol/h';
72        cond.P = 150 * 'kPa';
73        cond.T = 281.75 * 'K';
74        cond.z = [0.6664, 0.3336];
75
76        reb.P = 185 * 'kPa';
77        reb.T = 328.12 * 'K';
78        reb.z = [0.001848, 0.9982];
79       
80        sec.trays.Emv = 1;
81        sec.trays(1).OutletV.F = 150 * 'kmol/h';
82
83        SET
84        sec.NTrays = 2;
85        #COLUMN
86        sec.trays.V = 4 * 'ft^3';
87        sec.trays.Ah = 0.394 * 'ft^2';
88        sec.trays.lw = 20.94 * 'in';
89        sec.trays.hw = 0.125 * 'ft';
90        sec.trays.Q = 0 * 'kW';
91        sec.trays.beta = 0.6;
92        sec.trays.alfa = 4;
93        sec.trays.Ap = 3.94 * 'ft^2';
94
95        INITIAL
96        sec.trays.OutletL.T = 270 *'K';
97        sec.trays.Level = 0.9 * sec.trays.hw;
98        sec.trays.OutletL.z(1) = 0.5;
99       
100        OPTIONS
101        TimeStep = 10;
102        TimeEnd = 1000;
103       
104# After running few seconds of transient the steady-state
105# can be obtained by using the results from that transient:
106
107        #GuessFile="SectionColumn_Test_with2tray.rlt";
108        #Dynamic = false;
109end
110
111# column section with 8 trays
112FlowSheet SectionColumn_Test_with8tray
113        PARAMETERS
114        PP      as Plugin(Brief="Physical Properties",
115                Type="PP",
116                Components = [ "isobutane", "benzene"],
117                LiquidModel = "PR",
118                VapourModel = "PR"
119        );
120        NComp   as Integer;
121
122        SET
123        NComp = PP.NumberOfComponents;
124       
125        DEVICES
126        sec as Section_Column;
127        feed as liquid_stream;
128        reb as vapour_stream;
129        cond as liquid_stream;
130        zero as stream;
131       
132        CONNECTIONS
133        feed to sec.trays(5).Inlet;
134       
135        zero to sec.trays([1:4]).Inlet;
136        zero to sec.trays([6:8]).Inlet;
137       
138        reb to sec.trays(8).InletV;
139        cond to sec.trays(1).InletL;
140       
141        SPECIFY
142        feed.F = 113.4 * 'kmol/h';
143        feed.T = 291 * 'K';
144        feed.P = 168.3 * 'kPa';
145        feed.z = [0.5, 0.5];
146
147        zero.F = 0 * 'kmol/h';
148        zero.T = 300 * 'K';
149        zero.P = 1 * 'atm';
150        zero.z = [0.5, 0.5];
151        zero.v = 0;
152        zero.h = 0 * 'J/mol';
153       
154        cond.F = 68 * 'kmol/h';
155        cond.P = 150 * 'kPa';
156        cond.T = 281.75 * 'K';
157        cond.z = [0.6664, 0.3336];
158
159#       reb.F = 153 * 'kmol/h';
160        reb.P = 185 * 'kPa';
161        reb.T = 328.12 * 'K';
162        reb.z = [0.001848, 0.9982];
163       
164        sec.trays.Emv = 1;
165        sec.trays(1).OutletV.F = 150 * 'kmol/h';
166
167        SET
168        sec.NTrays = 8;
169        #COLUMN
170        sec.trays.V = 4 * 'ft^3';
171        sec.trays.Ah = 0.394 * 'ft^2';
172        sec.trays.lw = 20.94 * 'in';
173        sec.trays.hw = 0.125 * 'ft';
174        sec.trays.Q = 0 * 'kW';
175        sec.trays.beta = 0.6;
176        sec.trays.alfa = 4;
177        sec.trays.Ap = 3.94 * 'ft^2';
178
179        INITIAL
180        sec.trays.OutletL.T = [290:(300-290)/(sec.NTrays-1):300] *'K';
181        sec.trays.Level = 0.3 * sec.trays.hw;
182        sec.trays.OutletL.z(1) = 0.5;
183       
184        OPTIONS
185        TimeStep = 1;
186        TimeEnd = 100;
187        #GuessFile="SectionColumn_Test_with8tray.rlt";
188        #Dynamic = false;
189end
190
191
192FlowSheet Distillation_kettle_cond_Test
193        PARAMETERS
194        PP      as Plugin(Brief="Physical Properties",
195                Type="PP",
196                Components = [ "isobutane", "n-pentane", "propylene",
197                "benzene", "isobutene" ],
198                LiquidModel = "PR",
199                VapourModel = "PR"
200        );
201        NComp   as Integer;
202       
203        VARIABLES
204        Qc as energy_source (Brief="Heat rate removed from condenser");
205        Qr as energy_source (Brief="Heat rate supplied to reboiler");
206       
207        SET
208        NComp = PP.NumberOfComponents;
209
210        DEVICES
211        col as Distillation_kettle_cond;
212        feed as source;
213        zero as stream;
214       
215        CONNECTIONS
216        feed.Outlet to col.trays(5).Inlet;
217        zero to col.reb.Inlet;
218        zero to col.trays([1:4]).Inlet;
219        zero to col.trays([6:col.NTrays]).Inlet;
220        Qc.OutletQ to col.cond.InletQ;
221        Qr.OutletQ to col.reb.InletQ;
222       
223        SPECIFY
224        feed.F = 113.4 * 'kmol/h';
225        feed.T = 291 * 'K';
226        feed.P = 168.3 * 'kPa';
227        feed.Composition = 1/NComp;
228       
229        zero.F = 0 * 'kmol/h';
230        zero.T = 300 * 'K';
231        zero.P = 1 * 'atm';
232        zero.z = 1/NComp;
233        zero.v = 0;
234        zero.h = 0 * 'J/mol';
235       
236        col.sptop.Outlet2.F = 85 * 'kmol/h';
237        col.reb.OutletL.F = 28.4 * 'kmol/h';
238        col.sptop.frac = 0.444445;
239        col.cond.OutletV.F = 0 * 'kmol/h';
240        Qr.OutletQ = 3.7743e6 * 'kJ/h';
241        Qc.OutletQ = -3.71e6 * 'kJ/h';
242        col.pump1.dP = 16 * 'kPa';
243        col.trays.Emv = 1;
244       
245        col.alfaTopo = 2;
246       
247        SET
248        col.NTrays = 8;
249        col.cond.V = 2 * 'm^3';
250        col.cond.Across = 1 * 'm^2';
251        col.trays.V = 4 * 'ft^3';
252        col.trays.Ah = 0.394 * 'ft^2';
253        col.trays.lw = 20.94 * 'in';
254        col.trays.hw = 0.125 * 'ft';
255        col.trays.Q = 0 * 'kW';
256        col.trays.beta = 0.6;
257        col.trays.alfa = 4;
258        col.trays.Ap = 3.94 * 'ft^2';
259        col.reb.V = 2 * 'm^3';
260        col.reb.Across = 1 * 'm^2';
261       
262        INITIAL
263        # condenser
264        col.cond.OutletL.T = 260 *'K';
265        col.cond.Level = 1 * 'm';
266        col.cond.OutletL.z([1:4]) = [0.65, 0.05, 0.01, 0.01];
267
268        # reboiler
269        col.reb.OutletL.T = 350 *'K';
270        col.reb.Level = 1 * 'm';
271        col.reb.OutletL.z([1:4]) = [0.1, 0.7, 0.01, 0.01];
272
273        # column trays
274        col.trays.OutletL.T = [290:(330-290)/(col.NTrays-1):330] * 'K';
275        col.trays.Level = 1.2 * col.trays.hw;
276        col.trays.OutletL.z([1:4]) = [0.5, 0.05, 0.01, 0.01];
277
278        OPTIONS
279        TimeStep = 0.1;
280        TimeEnd = 50;
281        #GuessFile="Distillation_kettle_cond_Test.rlt";
282        #Dynamic = false;       
283end
284
285
286FlowSheet Column_ctrl
287        PARAMETERS
288        PP      as Plugin(Brief="Physical Properties",
289                Type="PP",
290                Components = [ "isobutane", "n-pentane", "propylene",
291                        "benzene", "isobutene" ],
292                LiquidModel = "PR",
293                VapourModel = "PR"
294        );
295        NComp   as Integer;
296       
297        Qcmin as heat_rate (Brief="Minimum Condenser Heat supplied");
298        Qcmax as heat_rate (Brief="Maximum Condenser Heat supplied");
299        Qrmin as heat_rate (Brief="Minimum Reboiler Heat supplied");
300        Qrmax as heat_rate (Brief="Maximum Reboiler Heat supplied");
301        Frmin as flow_mol (Brief="Minimum bottom flow rate");
302        Frmax as flow_mol (Brief="Maximum bottom flow rate");
303        Fcmin as flow_mol (Brief="Minimum reflux flow rate");
304        Fcmax as flow_mol (Brief="Maximum reflux flow rate");
305        Hmint as length (Brief="Minimum liquid level in top tank");
306        Hmaxt as length (Brief="Maximum liquid level in top tank");
307    Hminb as length (Brief="Minimum liquid level in reboiler");
308        Hmaxb as length (Brief="Maximum liquid level in reboiler");
309        Pmax as pressure (Brief="Maximum column pressure");
310        Pmin as pressure (Brief="Minimum column pressure");
311        Tmax as temperature (Brief="Maximum column temperature");
312        Tmin as temperature (Brief="Minimum column temperature");
313
314        VARIABLES
315        Qc as energy_source (Brief="Heat rate removed from condenser");
316        Qr as energy_source (Brief="Heat rate supplied to reboiler");
317        Had_top as Real (Brief="Dimensionless condenser level");
318        Had_bot as Real (Brief="Dimensionless reboiler level");
319        Pad as Real (Brief="Dimensionless pressure");
320        Tad as Real (Brief="Dimensionless temperature");
321        RR      as positive (Brief="Reflux ratio");
322
323        SET
324        NComp = PP.NumberOfComponents;
325
326        DEVICES
327        col as Distillation_kettle_cond;
328        feed as source;
329        zero as stream;
330        TCcond as PIDIncr;
331        LCtop as PIDIncr;
332        LCbot as PIDIncr;
333        PC as PIDIncr;
334
335        CONNECTIONS
336        feed.Outlet to col.trays(5).Inlet;
337        zero to col.reb.Inlet;
338        zero to col.trays([1:4]).Inlet;
339        zero to col.trays([6:col.NTrays]).Inlet;
340        Qc.OutletQ to col.cond.InletQ;
341        Qr.OutletQ to col.reb.InletQ;
342
343        SET
344        TCcond.tau = 0*'s';     
345        TCcond.tauSet = 0*'s'; 
346        TCcond.alpha = 0.3;
347        TCcond.bias = 0.5;     
348        TCcond.gamma = 1;
349        TCcond.beta = 1;
350        TCcond.Action = "Direct";
351        TCcond.Clip = "Clipped";
352        TCcond.Mode = "Automatic";
353        TCcond.intTime = 60*'s';
354        TCcond.gain = 0.6;
355        TCcond.derivTime = 1*'s';
356
357        PC.tau = 0*'s';
358        PC.tauSet = 0*'s';     
359        PC.alpha = 0.3;
360        PC.bias = 0;   
361        PC.gamma = 1;
362        PC.beta = 1;
363        PC.Action = "Reverse";
364        PC.Clip = "Clipped";
365        PC.Mode = "Automatic";
366        PC.intTime = 50*'s';
367        PC.gain = 0.5;
368        PC.derivTime = 1*'s';
369       
370        LCtop.tau = 0*'s';     
371        LCtop.tauSet = 0*'s';   
372        LCtop.alpha = 0.3;
373        LCtop.bias = 0.5;       
374        LCtop.gamma = 1;
375        LCtop.beta = 1;
376        LCtop.Action = "Reverse";
377        LCtop.Clip = "Clipped";
378        LCtop.Mode = "Automatic";
379        LCtop.intTime = 10*'s';
380        LCtop.gain = 1;
381        LCtop.derivTime = 0*'s';
382
383        LCbot.tau = 0*'s';     
384        LCbot.tauSet = 0*'s';   
385        LCbot.alpha = 0.3;
386        LCbot.bias = 0.5;       
387        LCbot.gamma = 1;
388        LCbot.beta = 1;
389        LCbot.Action = "Reverse";
390        LCbot.Clip = "Clipped";
391        LCbot.Mode = "Automatic";
392        LCbot.intTime = 100*'s';
393        LCbot.gain = 1;
394        LCbot.derivTime = 0*'s';
395
396        EQUATIONS
397        TCcond.Ports.setPoint = ((15+273.15) * 'K' - Tmin)/(Tmax-Tmin);
398        TCcond.Ports.input = Tad;
399        Tad = (col.cond.OutletL.T-Tmin)/(Tmax-Tmin);
400        Qc.OutletQ = Qcmin+(Qcmax-Qcmin)*TCcond.Ports.output;   
401
402        PC.Ports.setPoint = (4.0*'bar'-Pmin)/(Pmax-Pmin);
403        PC.Ports.input = Pad;
404        Pad = (col.cond.OutletV.P-Pmin)/(Pmax-Pmin);
405        col.cond.OutletV.F = (Fcmin+(Fcmax-Fcmin)*PC.Ports.output);     
406       
407        LCtop.Ports.setPoint = (1.0 * 'm' - Hmint)/(Hmaxt-Hmint);
408        LCtop.Ports.input = Had_top;
409        Had_top = (col.cond.Level-Hmint)/(Hmaxt-Hmint);
410        col.sptop.Outlet1.F = Fcmin + (Fcmax-Fcmin) * LCtop.Ports.output;
411
412        LCbot.Ports.setPoint = (1.0 * 'm' - Hminb)/(Hmaxb-Hminb);
413        LCbot.Ports.input = Had_bot;
414        Had_bot = (col.reb.Level-Hminb)/(Hmaxb-Hminb);
415        col.reb.OutletL.F = Frmin + (Frmax-Frmin) * LCbot.Ports.output;
416
417        RR * (col.cond.OutletV.F + col.sptop.Outlet1.F) = col.sptop.Outlet2.F;
418       
419        if time < 1 * 'h' then
420                col.sptop.Outlet2.F = 75 * 'kmol/h'; # reflux
421        else
422                col.sptop.Outlet2.F = 85 * 'kmol/h'; # reflux
423        end
424
425        SPECIFY
426        feed.F = 113.4 * 'kmol/h';
427        feed.T = 291 * 'K';
428        feed.P = 5 * 'bar';
429        feed.Composition = 1/NComp;
430       
431        zero.F = 0 * 'kmol/h';
432        zero.T = 300 * 'K';
433        zero.P = 1 * 'atm';
434        zero.z = 1/NComp;
435        zero.v = 0;
436        zero.h = 0 * 'J/mol';
437       
438        Qr.OutletQ = 4e6 * 'kJ/h';
439        col.pump1.dP = 16 * 'kPa';
440        col.trays.Emv = 1;
441        col.alfaTopo = 2;
442
443        SET
444        col.NTrays = 8;
445        col.cond.V = 2 * 'm^3';
446        col.cond.Across = 1 * 'm^2';
447        col.trays.V = 4 * 'ft^3';
448        col.trays.Ah = 0.394 * 'ft^2';
449        col.trays.lw = 20.94 * 'in';
450        col.trays.hw = 0.125 * 'ft';
451        col.trays.Q = 0 * 'kW';
452        col.trays.beta = 0.6;
453        col.trays.alfa = 4;
454        col.trays.Ap = 3.94 * 'ft^2';
455        col.reb.V = 2 * 'm^3';
456        col.reb.Across = 1 * 'm^2';
457
458        # Controllers type
459        TCcond.PID_Select = "Ideal_AW";
460        PC.PID_Select = "Ideal_AW";
461        LCtop.PID_Select = "Ideal_AW";
462        LCbot.PID_Select = "Ideal_AW";
463
464        Qrmax = 5e6 * 'kJ/h';
465        Qrmin = 1e6 * 'kJ/h';
466        Frmin = 0 * 'kmol/h';
467        Frmax = 60 * 'kmol/h';
468        Fcmin = 0 * 'kmol/h';
469        Fcmax = 120 * 'kmol/h';
470        Hmint = 0 * 'm';
471        Hmaxt = 2 * 'm';
472        Hminb = 0 * 'm';
473        Hmaxb = 2 * 'm';
474        Pmin = 0.5 * 'bar';
475        Pmax = 6 * 'bar';
476        Qcmax = -5e5 * 'kJ/h';
477        Qcmin = -5e6 * 'kJ/h';
478        Tmax = (30+273.15) * 'K';
479        Tmin = (-20+273.15) * 'K';
480       
481        INITIAL
482        # condenser
483        col.cond.OutletL.T = 260 *'K';
484        col.cond.Level = 1 * 'm';
485        col.cond.OutletL.z([1:4]) = [0.2, 0.2, 0.4, 0.05];
486
487        # reboiler
488        col.reb.OutletL.T = 350 *'K';
489        col.reb.Level = 1 * 'm';
490        col.reb.OutletL.z([1:4]) = [0.1, 0.4, 0.1, 0.3];
491
492        # column trays
493        col.trays.OutletL.T = [290:(330-290)/(col.NTrays-1):330] * 'K';
494        col.trays.Level = 1.2 * col.trays.hw;
495        col.trays.OutletL.z([1:4]) = [0.15, 0.3, 0.25, 0.2];
496
497        OPTIONS
498        TimeStep = 0.1;
499        TimeEnd = 5;
500        TimeUnit = 'h';
501        InitialFile = "Column_ctrl.rlt";
502        DAESolver(File="dassl");
503        #GuessFile = "Column_ctrl.rlt";
504        #Dynamic = false;
505end
506
507# packed column section with 8 trays
508FlowSheet PackedSectionColumn
509        PARAMETERS
510        PP      as Plugin(Brief="Physical Properties",
511                Type="PP",
512                Components = [ "isobutane", "n-pentane", "propylene",
513                "benzene", "isobutene" ],
514                LiquidModel = "PR",
515                VapourModel = "PR"
516        );
517        NComp   as Integer;
518
519        SET
520        NComp = PP.NumberOfComponents;
521       
522        DEVICES
523        sec as Packed_Section_Column;
524        feed as liquid_stream;
525        reb as vapour_stream;
526        cond as liquid_stream;
527        zero as stream;
528       
529        CONNECTIONS
530        feed to sec.stage(5).Inlet;
531        zero to sec.stage([1:4]).Inlet;
532        zero to sec.stage([6:sec.NStages]).Inlet;
533        reb to sec.stage(8).InletV;
534        cond to sec.stage(1).InletL;
535       
536        SPECIFY
537        feed.F = 113.4 * 'kmol/h';
538        feed.T = 291 * 'K';
539        feed.P = 1.66 * 'atm';
540        feed.z = [0.2, 0.2, 0.2, 0.2, 0.2];
541
542        zero.F = 0 * 'kmol/h';
543        zero.T = 300 * 'K';
544        zero.P = 1 * 'atm';
545        zero.z = [0.2, 0.2, 0.2, 0.2, 0.2];
546        zero.v = 0;
547        zero.h = 0 * 'J/mol';
548       
549        cond.F = 85 * 'kmol/h';
550        cond.P = 2.33 * 'atm';
551        cond.T = 283.5 * 'K';
552        cond.z = [0.599, 0.044, 0.035, 0.007, 0.315];
553
554        reb.F = 137.57 * 'kmol/h';
555        reb.P = 2.46 * 'atm';
556        reb.T = 325 * 'K';
557        reb.z = [0.16, 0.542, 0.013, 0.008, 0.277];
558
559        sec.dP = 0.008 * 'atm'; #queda de pressao na secao!
560
561        SET
562        sec.H = 4 * 'm';#altura do recheio
563        sec.NStages = 8; #numero de estagios teoricos do recheio
564        sec.stage.Q = 0 * 'kW';
565        sec.stage.d = 1.009 * 'm';
566        sec.stage.Cpo = 0.763;
567        sec.stage.e = 0.951;
568        sec.stage.a = 112.6 * 'm^2/m^3';
569        sec.stage.Qsil = 0.1;#coeficiente de resistencia do recheio
570
571        INITIAL
572        sec.stage.OutletL.T =[283:(325-283)/(sec.NStages-1):325] *'K';
573        sec.stage.ML = 0.01 * 'kmol';
574        sec.stage.OutletL.z([1:4]) = [0.3, 0.2, 0.002, 0.1];
575
576        OPTIONS
577        DAESolver(File="dassl");
578        NLASolver(File="nlasolver");
579        TimeStep = 10;
580        TimeEnd = 100;
581end
582
583FlowSheet Packed_kettle_cond_Test
584        PARAMETERS
585        PP      as Plugin(Brief="Physical Properties",
586                Type="PP",
587                Components = [ "isobutane", "n-pentane", "propylene",
588                "benzene", "isobutene" ],
589                LiquidModel = "PR",
590                VapourModel = "PR"
591        );
592        NComp   as Integer;
593       
594        VARIABLES
595        Qc as energy_source (Brief="Heat rate removed from condenser");
596        Qr as energy_source (Brief="Heat rate supplied to reboiler");
597       
598        SET
599        NComp = PP.NumberOfComponents;
600
601        DEVICES
602        col as PackedDistillation_kettle_cond;
603        feed as source;
604        zero as stream;
605       
606        CONNECTIONS
607        feed.Outlet to col.stage(5).Inlet;
608        zero to col.reb.Inlet;
609        zero to col.stage([1:4]).Inlet;
610        zero to col.stage([6:col.NStages]).Inlet;
611        Qc.OutletQ to col.cond.InletQ;
612        Qr.OutletQ to col.reb.InletQ;
613       
614        SPECIFY
615        feed.F = 113.4 * 'kmol/h';
616        feed.T = 291 * 'K';
617        feed.P = 168.3 * 'kPa';
618        feed.Composition = 1/NComp;
619       
620        zero.F = 0 * 'kmol/h';
621        zero.T = 300 * 'K';
622        zero.P = 1 * 'atm';
623        zero.z = 1/NComp;
624        zero.v = 0;
625        zero.h = 0 * 'J/mol';
626       
627        col.sptop.Outlet2.F = 85 * 'kmol/h';
628        col.reb.OutletL.F = 28.4 * 'kmol/h';
629        col.sptop.frac = 0.444445;
630        col.cond.OutletV.F = 0 * 'kmol/h';
631        Qr.OutletQ = 3.7743e6 * 'kJ/h';
632        Qc.OutletQ = -3.71e6 * 'kJ/h';
633        col.pump1.dP = 16 * 'kPa';
634
635        col.dP = 0.024 * 'atm'; #queda de pressao entre o topo e o fundo da coluna.
636
637        SET
638        col.H = 3.5 * 'm'; # altura de recheio
639        col.NStages = 8; # numero de estagios teoricos do recheio
640        col.stage.Q = 0 * 'kW';
641        col.stage.d = 2.24 * 'ft';
642        col.stage.Cpo = 0.763;
643        col.stage.e = 0.951;
644        col.stage.a = 112.6 * 'm^2/m^3';
645
646        col.cond.V = 2 * 'm^3';
647        col.cond.Across = 1 * 'm^2';
648        col.reb.V = 2 * 'm^3';
649        col.reb.Across = 1 * 'm^2';
650        col.stage.Qsil = 2; # coeficiente de resistencia do recheio
651       
652        INITIAL
653        # condenser
654        col.cond.OutletL.T = 260 *'K';
655        col.cond.Level = 1 * 'm';
656        col.cond.OutletL.z([1:4]) = [0.65, 0.05, 0.01, 0.01];
657
658        # reboiler
659        col.reb.OutletL.T = 330 *'K';
660        col.reb.Level = 1 * 'm';
661        col.reb.OutletL.z([1:4]) = [0.1, 0.7, 0.01, 0.01];
662
663        # column trays
664        col.stage.OutletL.T = [290:(330-290)/(col.NStages-1):330] * 'K';
665        col.stage.ML = 0.1 * 'kmol';
666        col.stage.OutletL.z([1:4]) = [0.15, 0.5, 0.001, 0.1];
667
668        OPTIONS
669        TimeStep = 10;
670        TimeEnd = 500;
671end
672
673FlowSheet PackedColumn_ctrl
674        PARAMETERS
675        PP      as Plugin(Brief="Physical Properties",
676                Type="PP",
677                Components = [ "isobutane", "n-pentane", "propylene",
678                        "benzene", "isobutene" ],
679                LiquidModel = "PR",
680                VapourModel = "PR"
681        );
682        NComp   as Integer;
683       
684        Qcmin as heat_rate (Brief="Minimum Condenser Heat supplied");
685        Qcmax as heat_rate (Brief="Maximum Condenser Heat supplied");
686        Qrmin as heat_rate (Brief="Minimum Reboiler Heat supplied");
687        Qrmax as heat_rate (Brief="Maximum Reboiler Heat supplied");
688        Frmin as flow_mol (Brief="Minimum bottom flow rate");
689        Frmax as flow_mol (Brief="Maximum bottom flow rate");
690        Fcmin as flow_mol (Brief="Minimum reflux flow rate");
691        Fcmax as flow_mol (Brief="Maximum reflux flow rate");
692        Hmint as length (Brief="Minimum liquid level in top tank");
693        Hmaxt as length (Brief="Maximum liquid level in top tank");
694    Hminb as length (Brief="Minimum liquid level in reboiler");
695        Hmaxb as length (Brief="Maximum liquid level in reboiler");
696        Pmax as pressure (Brief="Maximum column pressure");
697        Pmin as pressure (Brief="Minimum column pressure");
698        Tmax as temperature (Brief="Maximum column temperature");
699        Tmin as temperature (Brief="Minimum column temperature");
700
701        VARIABLES
702        Qc as energy_source (Brief="Heat rate removed from condenser");
703        Qr as energy_source (Brief="Heat rate supplied to reboiler");
704        Had_top as Real (Brief="Dimensionless condenser level");
705        Had_bot as Real (Brief="Dimensionless reboiler level");
706        Pad as Real (Brief="Dimensionless pressure");
707        Tad as Real (Brief="Dimensionless temperature");
708        RR      as positive (Brief="Reflux ratio");
709
710        SET
711        NComp = PP.NumberOfComponents;
712
713        DEVICES
714        col as PackedDistillation_kettle_cond;
715        feed as source;
716        zero as stream;
717        TCcond as PIDIncr;
718        LCtop as PIDIncr;
719        LCbot as PIDIncr;
720        PC as PIDIncr;
721
722        CONNECTIONS
723        feed.Outlet to col.stage(5).Inlet;
724        zero to col.reb.Inlet;
725        zero to col.stage([1:4]).Inlet;
726        zero to col.stage([6:col.NStages]).Inlet;
727        Qc.OutletQ to col.cond.InletQ;
728        Qr.OutletQ to col.reb.InletQ;
729       
730        SET
731        TCcond.Action = "Direct";
732        TCcond.Clip = "Clipped";
733        TCcond.Mode = "Automatic";
734        TCcond.tau = 0*'s';     
735        TCcond.tauSet = 0*'s'; 
736        TCcond.alpha = 0.3;
737        TCcond.bias = 0.5;     
738        TCcond.gamma = 1;
739        TCcond.beta = 1;
740        TCcond.intTime = 60*'s';
741        TCcond.gain = 0.6;
742        TCcond.derivTime = 1*'s';
743
744        PC.Action = "Reverse";
745        PC.Clip = "Clipped";
746        PC.Mode = "Automatic";
747        PC.tau = 0*'s';
748        PC.tauSet = 0*'s';     
749        PC.alpha = 0.3;
750        PC.bias = 0;   
751        PC.gamma = 1;
752        PC.beta = 1;
753        PC.intTime = 50*'s';
754        PC.gain = 0.5;
755        PC.derivTime = 1*'s';
756
757        LCtop.Action = "Reverse";
758        LCtop.Clip = "Clipped";
759        LCtop.Mode = "Automatic";
760        LCtop.tau = 0*'s';     
761        LCtop.tauSet = 0*'s';   
762        LCtop.alpha = 0.3;
763        LCtop.bias = 0.5;       
764        LCtop.gamma = 1;
765        LCtop.beta = 1;
766        LCtop.intTime = 10*'s';
767        LCtop.gain = 1;
768        LCtop.derivTime = 0*'s';
769
770        LCbot.Action = "Reverse";
771        LCbot.Clip = "Clipped";
772        LCbot.Mode = "Automatic";
773        LCbot.tau = 0*'s';     
774        LCbot.tauSet = 0*'s';   
775        LCbot.alpha = 0.3;
776        LCbot.bias = 0.5;       
777        LCbot.gamma = 1;
778        LCbot.beta = 1;
779        LCbot.intTime = 100*'s';
780        LCbot.gain = 1;
781        LCbot.derivTime = 0*'s';
782
783        EQUATIONS
784        TCcond.Ports.setPoint = ((15+273.15) * 'K' - Tmin)/(Tmax-Tmin);
785        TCcond.Ports.input = Tad;
786        Tad = (col.cond.OutletL.T-Tmin)/(Tmax-Tmin);
787        Qc.OutletQ = Qcmin+(Qcmax-Qcmin)*TCcond.Ports.output;   
788
789        PC.Ports.setPoint = (4.0*'bar'-Pmin)/(Pmax-Pmin);
790        PC.Ports.input = Pad;
791        Pad = (col.cond.OutletV.P-Pmin)/(Pmax-Pmin);
792        col.cond.OutletV.F = (Fcmin+(Fcmax-Fcmin)*PC.Ports.output);     
793       
794        LCtop.Ports.setPoint = (1.0 * 'm' - Hmint)/(Hmaxt-Hmint);
795        LCtop.Ports.input = Had_top;
796        Had_top = (col.cond.Level-Hmint)/(Hmaxt-Hmint);
797        col.sptop.Outlet1.F = Fcmin + (Fcmax-Fcmin) * LCtop.Ports.output;
798
799        LCbot.Ports.setPoint = (1.0 * 'm' - Hminb)/(Hmaxb-Hminb);
800        LCbot.Ports.input = Had_bot;
801        Had_bot = (col.reb.Level-Hminb)/(Hmaxb-Hminb);
802        col.reb.OutletL.F = Frmin + (Frmax-Frmin) * LCbot.Ports.output;
803
804        RR * (col.cond.OutletV.F + col.sptop.Outlet1.F) = col.sptop.Outlet2.F;
805       
806        if time < 1 * 'h' then
807                col.sptop.Outlet2.F = 75 * 'kmol/h'; # reflux
808        else
809                col.sptop.Outlet2.F = 85 * 'kmol/h'; # reflux
810        end
811
812        SPECIFY
813        feed.F = 113.4 * 'kmol/h';
814        feed.T = 291 * 'K';
815        feed.P = 5 * 'bar';
816        feed.Composition = 1/NComp;
817       
818        zero.F = 0 * 'kmol/h';
819        zero.T = 300 * 'K';
820        zero.P = 1 * 'atm';
821        zero.z = 1/NComp;
822        zero.v = 0;
823        zero.h = 0 * 'J/mol';
824       
825        Qr.OutletQ = 4e6 * 'kJ/h';
826        col.pump1.dP = 16 * 'kPa';
827       
828        col.dP = 0.024  * 'atm'; #queda de pressao entre o topo e o fundo da coluna
829
830        SET
831        col.H = 3.5 * 'm'; #altura do recheio
832        col.NStages = 8; #numero de estagios teoricos do recheio
833        col.stage.Q = 0 * 'kW';
834        col.stage.d = 2.24 * 'ft';
835        col.stage.Cpo = 0.763;
836        col.stage.e = 0.951;
837        col.stage.a = 112.6 * 'm^2/m^3';
838
839        col.cond.V = 2 * 'm^3';
840        col.cond.Across = 1 * 'm^2';
841        col.reb.V = 2 * 'm^3';
842        col.reb.Across = 1 * 'm^2';
843
844        col.stage.Qsil = 2; #coeficiente de resistencia do recheio
845
846        # Controllers type
847        TCcond.PID_Select = "Ideal_AW";
848        PC.PID_Select = "Ideal_AW";
849        LCtop.PID_Select = "Ideal_AW";
850        LCbot.PID_Select = "Ideal_AW";
851
852        Qrmax = 5e6 * 'kJ/h';
853        Qrmin = 1e6 * 'kJ/h';
854        Frmin = 0 * 'kmol/h';
855        Frmax = 60 * 'kmol/h';
856        Fcmin = 0 * 'kmol/h';
857        Fcmax = 120 * 'kmol/h';
858        Hmint = 0 * 'm';
859        Hmaxt = 2 * 'm';
860        Hminb = 0 * 'm';
861        Hmaxb = 2 * 'm';
862        Pmin = 0.5 * 'bar';
863        Pmax = 6 * 'bar';
864        Qcmax = -5e5 * 'kJ/h';
865        Qcmin = -5e6 * 'kJ/h';
866        Tmax = (30+273.15) * 'K';
867        Tmin = (-20+273.15) * 'K';
868       
869        INITIAL
870        # condenser
871        col.cond.OutletL.T = 260 *'K';
872        col.cond.Level = 1 * 'm';
873        col.cond.OutletL.z([1:4]) = [0.2, 0.2, 0.4, 0.05];
874
875        # reboiler
876        col.reb.OutletL.T = 350 *'K';
877        col.reb.Level = 1 * 'm';
878        col.reb.OutletL.z([1:4]) = [0.1, 0.4, 0.1, 0.3];
879
880        # column trays
881        col.stage.OutletL.T = [290:(330-290)/(col.NStages-1):330] * 'K';
882        col.stage.ML = 0.1 * 'kmol';
883        col.stage.OutletL.z([1:4]) = [0.15, 0.3, 0.25, 0.2];
884
885        OPTIONS
886        TimeStep = 0.1;
887        TimeEnd = 5;
888        TimeUnit = 'h';
889        InitialFile = "Packed_Column_ctrl.rlt";
890        #GuessFile = "Packed_Column_ctrl.rlt";
891        #Dynamic = false;
892end
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