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 | * File containg models of columns: distillation, stripping, absorbers |
---|
17 | * rectifier, .... |
---|
18 | * |
---|
19 | * The default nomenclature is: |
---|
20 | * Type_Column_reboilertype_condensertyper |
---|
21 | * |
---|
22 | * where: |
---|
23 | * Type = refluxed or reboiled or section |
---|
24 | * Column = Stripping, Absorption, Rectifier, Distillation |
---|
25 | * Reboiler type (if exists) = kettle or thermosyphon |
---|
26 | * Condenser type (if exists) = with subccoling or without subcooling |
---|
27 | * |
---|
28 | *----------------------------------------------------------------------- |
---|
29 | * Author: Paula B. Staudt |
---|
30 | * $Id: column.mso 210 2007-03-15 12:52:28Z arge $ |
---|
31 | *---------------------------------------------------------------------*# |
---|
32 | |
---|
33 | using "tray"; |
---|
34 | using "reboiler"; |
---|
35 | using "condenser"; |
---|
36 | using "mixers_splitters/splitter"; |
---|
37 | using "mixers_splitters/mixer"; |
---|
38 | using "tank"; |
---|
39 | using "pressure_changers/pump"; |
---|
40 | |
---|
41 | #*---------------------------------------------------------------------- |
---|
42 | * Model of a column section with: |
---|
43 | * - NTrays=number of trays trays. |
---|
44 | * |
---|
45 | *---------------------------------------------------------------------*# |
---|
46 | Model Section_Column |
---|
47 | PARAMETERS |
---|
48 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
49 | outer NComp as Integer; |
---|
50 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
51 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
---|
52 | top as Integer(Brief="Number of top tray"); |
---|
53 | bot as Integer(Brief="Number of bottom tray"); |
---|
54 | |
---|
55 | SET |
---|
56 | top = (NTrays-1)*(1-topdown)/2+1; |
---|
57 | bot = NTrays/top; |
---|
58 | |
---|
59 | VARIABLES |
---|
60 | trays(NTrays) as tray; |
---|
61 | |
---|
62 | EQUATIONS |
---|
63 | "Pressure Drop through the tray" |
---|
64 | trays([top:topdown:bot]).OutletV.F = (1 + tanh(1 * |
---|
65 | (trays([top:topdown:bot]).OutletV.P - |
---|
66 | trays([top:topdown:bot]).InletL.P)/'Pa'))/2 * |
---|
67 | trays([top:topdown:bot]).Ah/trays([top:topdown:bot]).vV * |
---|
68 | sqrt(2*(trays([top:topdown:bot]).OutletV.P - |
---|
69 | trays([top:topdown:bot]).InletL.P + 1e-8 * 'atm') / |
---|
70 | (trays([top:topdown:bot]).alfa*trays([top:topdown:bot]).rhoV)); |
---|
71 | |
---|
72 | CONNECTIONS |
---|
73 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
---|
74 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
---|
75 | end |
---|
76 | |
---|
77 | |
---|
78 | #*---------------------------------------------------------------------- |
---|
79 | * Model of a distillation column containing: |
---|
80 | * - NTrays like tray; |
---|
81 | * - a kettle reboiler; |
---|
82 | * - dymamic condenser; |
---|
83 | * - a splitter which separate reflux and distillate; |
---|
84 | * - a pump in reflux stream; |
---|
85 | *---------------------------------------------------------------------*# |
---|
86 | Model Distillation_kettle_cond |
---|
87 | PARAMETERS |
---|
88 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
89 | outer NComp as Integer; |
---|
90 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
91 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
---|
92 | top as Integer(Brief="Number of top tray"); |
---|
93 | bot as Integer(Brief="Number of bottom tray"); |
---|
94 | |
---|
95 | SET |
---|
96 | top = (NTrays-1)*(1-topdown)/2+1; |
---|
97 | bot = NTrays/top; |
---|
98 | |
---|
99 | VARIABLES |
---|
100 | trays(NTrays) as tray; |
---|
101 | cond as condenser; |
---|
102 | reb as reboiler; |
---|
103 | sptop as splitter; |
---|
104 | pump1 as pump; |
---|
105 | |
---|
106 | EQUATIONS |
---|
107 | if (reb.OutletV.P > reb.InletL.P) then |
---|
108 | "Pressure Drop through the reboiler" |
---|
109 | reb.OutletV.F = trays(bot).Ah/reb.vV * sqrt((reb.OutletV.P - trays(bot).OutletL.P) |
---|
110 | / (trays(bot).beta*reb.rhoV) ); |
---|
111 | else |
---|
112 | "No flow in reboiler" |
---|
113 | reb.OutletV.F = 0.0 * 'mol/s'; |
---|
114 | end |
---|
115 | |
---|
116 | "Pressure Drop through the tray" |
---|
117 | trays(top).OutletV.F = (1 + tanh(1 * (trays(top).OutletV.P - cond.OutletL.P)/'Pa'))/2 * |
---|
118 | trays(top).Ah/trays(top).vV * sqrt(2*(trays(top).OutletV.P - |
---|
119 | cond.OutletL.P + 1e-8 * 'atm') / (trays(top).alfa*trays(top).rhoV)); |
---|
120 | |
---|
121 | trays([top+topdown:topdown:bot]).OutletV.F = (1 + tanh(1 * |
---|
122 | (trays([top+topdown:topdown:bot]).OutletV.P - |
---|
123 | trays([top+topdown:topdown:bot]).InletL.P)/'Pa'))/2 * |
---|
124 | trays([top+topdown:topdown:bot]).Ah/trays([top+topdown:topdown:bot]).vV * |
---|
125 | sqrt(2*(trays([top+topdown:topdown:bot]).OutletV.P - |
---|
126 | trays([top+topdown:topdown:bot]).InletL.P + 1e-8 * 'atm') / |
---|
127 | (trays([top+topdown:topdown:bot]).alfa*trays([top+topdown:topdown:bot]).rhoV)); |
---|
128 | |
---|
129 | CONNECTIONS |
---|
130 | #vapor |
---|
131 | reb.OutletV to trays(bot).InletV; |
---|
132 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
---|
133 | trays(top).OutletV to cond.InletV; |
---|
134 | |
---|
135 | #liquid |
---|
136 | cond.OutletL to sptop.Inlet; |
---|
137 | sptop.Outlet2 to pump1.Inlet; |
---|
138 | pump1.Outlet to trays(top).InletL; |
---|
139 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
---|
140 | trays(bot).OutletL to reb.InletL; |
---|
141 | end |
---|
142 | |
---|
143 | |
---|
144 | #* ------------------------------------------------------------------- |
---|
145 | * Distillation Column model with: |
---|
146 | * |
---|
147 | * - NTrays like tray; |
---|
148 | * - a vessel in the bottom of column; |
---|
149 | * - a splitter who separate the bottom product and the stream to reboiler; |
---|
150 | * - steady state reboiler (thermosyphon); |
---|
151 | * - a steady state condenser with subcooling; |
---|
152 | * - a vessel drum (layed cilinder); |
---|
153 | * - a splitter which separate reflux and distillate; |
---|
154 | * - a pump in reflux stream. |
---|
155 | * |
---|
156 | * ------------------------------------------------------------------*# |
---|
157 | Model Distillation_thermosyphon_subcooling |
---|
158 | PARAMETERS |
---|
159 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
160 | outer NComp as Integer; |
---|
161 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
162 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
---|
163 | top as Integer(Brief="Number of top tray"); |
---|
164 | bot as Integer(Brief="Number of bottom tray"); |
---|
165 | |
---|
166 | SET |
---|
167 | top = (NTrays-1)*(1-topdown)/2+1; |
---|
168 | bot = NTrays/top; |
---|
169 | |
---|
170 | VARIABLES |
---|
171 | trays(NTrays) as tray; |
---|
172 | cond as condenserSteady; |
---|
173 | reb as reboilerSteady; |
---|
174 | tbottom as tank; |
---|
175 | ttop as tank_cylindrical; |
---|
176 | spbottom as splitter; |
---|
177 | sptop as splitter; |
---|
178 | pump1 as pump; |
---|
179 | |
---|
180 | EQUATIONS |
---|
181 | if (reb.OutletV.P > reb.InletL.P) then |
---|
182 | "Pressure Drop through the reboiler" |
---|
183 | reb.OutletV.F = trays(bot).Ah/reb.vV * sqrt((reb.OutletV.P - trays(bot).OutletL.P) |
---|
184 | / (trays(bot).alfa*reb.rhoV) ); |
---|
185 | else |
---|
186 | "No flow in reboiler" |
---|
187 | reb.OutletV.F = 0.0 * 'mol/s'; |
---|
188 | end |
---|
189 | |
---|
190 | "Pressure Drop through the tray" |
---|
191 | trays(top).OutletV.F = (1 + tanh(1 * (trays(top).OutletV.P - ttop.Outlet.P)/'Pa'))/2 * |
---|
192 | trays(top).Ah/trays(top).vV /2* sqrt(2*(trays(top).OutletV.P - |
---|
193 | ttop.Outlet.P + 1e-8 * 'atm') / (trays(top).alfa*trays(top).rhoV)); |
---|
194 | |
---|
195 | trays([top+topdown:topdown:bot]).OutletV.F = (1 + tanh(1 * |
---|
196 | (trays([top+topdown:topdown:bot]).OutletV.P - |
---|
197 | trays([top+topdown:topdown:bot]).InletL.P)/'Pa'))/2 * |
---|
198 | trays([top+topdown:topdown:bot]).Ah/trays([top+topdown:topdown:bot]).vV /2* |
---|
199 | sqrt(2*(trays([top+topdown:topdown:bot]).OutletV.P - |
---|
200 | trays([top+topdown:topdown:bot]).InletL.P + 1e-8 * 'atm') / |
---|
201 | (trays([top+topdown:topdown:bot]).alfa*trays([top+topdown:topdown:bot]).rhoV)); |
---|
202 | |
---|
203 | CONNECTIONS |
---|
204 | #vapor |
---|
205 | reb.OutletV to trays(bot).InletV; |
---|
206 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
---|
207 | trays(top).OutletV to cond.InletV; |
---|
208 | |
---|
209 | #liquid |
---|
210 | cond.OutletL to ttop.Inlet; |
---|
211 | ttop.Outlet to sptop.Inlet; |
---|
212 | sptop.Outlet2 to pump1.Inlet; |
---|
213 | pump1.Outlet to trays(top).InletL; |
---|
214 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
---|
215 | trays(bot).OutletL to tbottom.Inlet; |
---|
216 | tbottom.Outlet to spbottom.Inlet; |
---|
217 | spbottom.Outlet2 to reb.InletL; |
---|
218 | end |
---|
219 | |
---|
220 | |
---|
221 | #* ------------------------------------------------------------------- |
---|
222 | * Distillation Column model with: |
---|
223 | * |
---|
224 | * - NTrays like tray; |
---|
225 | * - a vessel in the bottom of column; |
---|
226 | * - a splitter who separate the bottom product and the stream to reboiler; |
---|
227 | * - steady state reboiler (thermosyphon); |
---|
228 | * - a dynamic condenser without subcooling; |
---|
229 | * - a splitter which separate reflux and distillate; |
---|
230 | * - a pump in reflux stream. |
---|
231 | * |
---|
232 | * ------------------------------------------------------------------*# |
---|
233 | Model Distillation_thermosyphon_cond |
---|
234 | PARAMETERS |
---|
235 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
236 | outer NComp as Integer; |
---|
237 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
238 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
---|
239 | top as Integer(Brief="Number of top tray"); |
---|
240 | bot as Integer(Brief="Number of bottom tray"); |
---|
241 | |
---|
242 | SET |
---|
243 | top = (NTrays-1)*(1-topdown)/2+1; |
---|
244 | bot = NTrays/top; |
---|
245 | |
---|
246 | VARIABLES |
---|
247 | trays(NTrays) as tray; |
---|
248 | cond as condenser; |
---|
249 | reb as reboilerSteady; |
---|
250 | tbottom as tank; |
---|
251 | spbottom as splitter; |
---|
252 | sptop as splitter; |
---|
253 | pump1 as pump; |
---|
254 | |
---|
255 | EQUATIONS |
---|
256 | if (reb.OutletV.P > reb.InletL.P) then |
---|
257 | "Pressure Drop through the reboiler" |
---|
258 | reb.OutletV.F = trays(bot).Ah/reb.vV * sqrt((reb.OutletV.P - trays(bot).OutletL.P) |
---|
259 | / (trays(bot).alfa*reb.rhoV) ); |
---|
260 | else |
---|
261 | "No flow in reboiler" |
---|
262 | reb.OutletV.F = 0.0 * 'mol/s'; |
---|
263 | end |
---|
264 | |
---|
265 | "Pressure Drop through the tray" |
---|
266 | trays(top).OutletV.F = (1 + tanh(1 * (trays(top).OutletV.P - cond.OutletL.P)/'Pa'))/2 * |
---|
267 | trays(top).Ah/trays(top).vV * sqrt(2*(trays(top).OutletV.P - |
---|
268 | cond.OutletL.P + 1e-8 * 'atm') / (trays(top).alfa*trays(top).rhoV)); |
---|
269 | |
---|
270 | trays([top+topdown:topdown:bot]).OutletV.F = (1 + tanh(1 * |
---|
271 | (trays([top+topdown:topdown:bot]).OutletV.P - |
---|
272 | trays([top+topdown:topdown:bot]).InletL.P)/'Pa'))/2 * |
---|
273 | trays([top+topdown:topdown:bot]).Ah/trays([top+topdown:topdown:bot]).vV * |
---|
274 | sqrt(2*(trays([top+topdown:topdown:bot]).OutletV.P - |
---|
275 | trays([top+topdown:topdown:bot]).InletL.P + 1e-8 * 'atm') / |
---|
276 | (trays([top+topdown:topdown:bot]).alfa*trays([top+topdown:topdown:bot]).rhoV)); |
---|
277 | |
---|
278 | CONNECTIONS |
---|
279 | #vapor |
---|
280 | reb.OutletV to trays(bot).InletV; |
---|
281 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
---|
282 | trays(top).OutletV to cond.InletV; |
---|
283 | |
---|
284 | #liquid |
---|
285 | cond.OutletL to sptop.Inlet; |
---|
286 | sptop.Outlet2 to pump1.Inlet; |
---|
287 | pump1.Outlet to trays(top).InletL; |
---|
288 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
---|
289 | trays(bot).OutletL to tbottom.Inlet; |
---|
290 | tbottom.Outlet to spbottom.Inlet; |
---|
291 | spbottom.Outlet2 to reb.InletL; |
---|
292 | end |
---|
293 | |
---|
294 | #* ------------------------------------------------------------------- |
---|
295 | * Distillation Column model with: |
---|
296 | * |
---|
297 | * - NTrays like tray; |
---|
298 | * - a kettle reboiler; |
---|
299 | * - a steady state condenser with subcooling; |
---|
300 | * - a vessel drum (layed cilinder); |
---|
301 | * - a splitter which separate reflux and distillate; |
---|
302 | * - a pump in reflux stream. |
---|
303 | * |
---|
304 | * ------------------------------------------------------------------*# |
---|
305 | Model Distillation_kettle_subcooling |
---|
306 | PARAMETERS |
---|
307 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
308 | outer NComp as Integer; |
---|
309 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
310 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
---|
311 | top as Integer(Brief="Number of top tray"); |
---|
312 | bot as Integer(Brief="Number of bottom tray"); |
---|
313 | |
---|
314 | SET |
---|
315 | top = (NTrays-1)*(1-topdown)/2+1; |
---|
316 | bot = NTrays/top; |
---|
317 | |
---|
318 | VARIABLES |
---|
319 | trays(NTrays) as tray; |
---|
320 | cond as condenserSteady; |
---|
321 | reb as reboiler; |
---|
322 | ttop as tank_cylindrical; |
---|
323 | sptop as splitter; |
---|
324 | pump1 as pump; |
---|
325 | |
---|
326 | EQUATIONS |
---|
327 | if (reb.OutletV.P > reb.InletL.P) then |
---|
328 | "Pressure Drop through the reboiler" |
---|
329 | reb.OutletV.F = trays(bot).Ah/reb.vV * sqrt((reb.OutletV.P - trays(bot).OutletL.P) |
---|
330 | / (trays(bot).beta*reb.rhoV) ); |
---|
331 | else |
---|
332 | "No flow in reboiler" |
---|
333 | reb.OutletV.F = 0.0 * 'mol/s'; |
---|
334 | end |
---|
335 | |
---|
336 | "Pressure Drop through the tray" |
---|
337 | trays(top).OutletV.F = (1 + tanh(1 * (trays(top).OutletV.P - ttop.Outlet.P)/'Pa'))/2 * |
---|
338 | trays(top).Ah/trays(top).vV * sqrt(2*(trays(top).OutletV.P - |
---|
339 | ttop.Outlet.P + 1e-8 * 'atm') / (trays(top).alfa*trays(top).rhoV)); |
---|
340 | |
---|
341 | trays([top+topdown:topdown:bot]).OutletV.F = (1 + tanh(1 * |
---|
342 | (trays([top+topdown:topdown:bot]).OutletV.P - |
---|
343 | trays([top+topdown:topdown:bot]).InletL.P)/'Pa'))/2 * |
---|
344 | trays([top+topdown:topdown:bot]).Ah/trays([top+topdown:topdown:bot]).vV * |
---|
345 | sqrt(2*(trays([top+topdown:topdown:bot]).OutletV.P - |
---|
346 | trays([top+topdown:topdown:bot]).InletL.P + 1e-8 * 'atm') / |
---|
347 | (trays([top+topdown:topdown:bot]).alfa*trays([top+topdown:topdown:bot]).rhoV)); |
---|
348 | |
---|
349 | CONNECTIONS |
---|
350 | #vapor |
---|
351 | reb.OutletV to trays(bot).InletV; |
---|
352 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
---|
353 | trays(top).OutletV to cond.InletV; |
---|
354 | |
---|
355 | #liquid |
---|
356 | cond.OutletL to ttop.Inlet; |
---|
357 | ttop.Outlet to sptop.Inlet; |
---|
358 | sptop.Outlet2 to pump1.Inlet; |
---|
359 | pump1.Outlet to trays(top).InletL; |
---|
360 | trays([top:topdown:bot-topdown]).OutletL to trays([top+topdown:topdown:bot]).InletL; |
---|
361 | trays(bot).OutletL to reb.InletL; |
---|
362 | end |
---|
363 | |
---|
364 | |
---|
365 | #*---------------------------------------------------------------------- |
---|
366 | * Model of a rectifier containing: |
---|
367 | * - NTrays like tray; |
---|
368 | * - dymamic condenser without subcooling; |
---|
369 | * - a splitter which separate reflux and distillate; |
---|
370 | * - a pump in reflux stream; |
---|
371 | *---------------------------------------------------------------------*# |
---|
372 | Model Rectifier |
---|
373 | PARAMETERS |
---|
374 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
375 | outer NComp as Integer; |
---|
376 | NTrays as Integer(Brief="Number of trays", Default=2); |
---|
377 | topdown as Integer(Brief="Trays counting (1=top-down, -1=bottom-up)", Default=1); |
---|
378 | top as Integer(Brief="Number of top tray"); |
---|
379 | bot as Integer(Brief="Number of bottom tray"); |
---|
380 | |
---|
381 | SET |
---|
382 | top = (NTrays-1)*(1-topdown)/2+1; |
---|
383 | bot = NTrays/top; |
---|
384 | |
---|
385 | VARIABLES |
---|
386 | trays(NTrays) as tray; |
---|
387 | cond as condenser; |
---|
388 | sptop as splitter; |
---|
389 | pump1 as pump; |
---|
390 | |
---|
391 | EQUATIONS |
---|
392 | "Pressure Drop through the tray" |
---|
393 | trays(top).OutletV.F = (1 + tanh(1 * (trays(top).OutletV.P - cond.OutletL.P)/'Pa'))/2 * |
---|
394 | trays(top).Ah/trays(top).vV * sqrt(2*(trays(top).OutletV.P - |
---|
395 | cond.OutletL.P + 1e-8 * 'atm') / (trays(top).alfa*trays(top).rhoV)); |
---|
396 | |
---|
397 | trays([top+topdown:topdown:bot]).OutletV.F = (1 + tanh(1 * |
---|
398 | (trays([top+topdown:topdown:bot]).OutletV.P - |
---|
399 | trays([top+topdown:topdown:bot]).InletL.P)/'Pa'))/2 * |
---|
400 | trays([top+topdown:topdown:bot]).Ah/trays([top+topdown:topdown:bot]).vV * |
---|
401 | sqrt(2*(trays([top+topdown:topdown:bot]).OutletV.P - |
---|
402 | trays([top+topdown:topdown:bot]).InletL.P + 1e-8 * 'atm') / |
---|
403 | (trays([top+topdown:topdown:bot]).alfa*trays([top+topdown:topdown:bot]).rhoV)); |
---|
404 | |
---|
405 | CONNECTIONS |
---|
406 | #vapor |
---|
407 | trays([top+topdown:topdown:bot]).OutletV to trays([top:topdown:bot-topdown]).InletV; |
---|
408 | trays(top).OutletV to cond.InletV; |
---|
409 | |
---|
410 | #liquid |
---|
411 | cond.OutletL to sptop.Inlet; |
---|
412 | sptop.Outlet2 to pump1.Inlet; |
---|
413 | pump1.Outlet to trays(top).InletL; |
---|
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 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
431 | outer 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 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
486 | outer 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 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
542 | outer 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 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
597 | outer 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 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
654 | outer 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 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
709 | outer 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 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
765 | outer 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 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
823 | outer 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 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
879 | outer 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 | outer PP as Plugin(Brief = "External Physical Properties", Type="PP"); |
---|
933 | outer 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 |
---|