A Heuristic for extractive agent flow rate in extractive distillation

Distillation is the most widely used separation process for liquids separation in the industry. Even when the volatilities of the mixture are not favorable, then enhanced distillation is used. Extractive distillation is the enhanced distillation most widely used that consists in introducing a large...

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Autores: Plesu, Valentin, Cantero, Sergio, Plesu Popescu, Alexandra Elena, Bonet i Ruiz, Jordi, Iancu, Petrica, Llorens Llacuna, Joan
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/147804
Acceso en línea:https://hdl.handle.net/2445/147804
Access Level:acceso abierto
Palabra clave:Destil·lació
Aparells de destil·lació
Heurística
Distillation
Distillation apparatus
Heuristic
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spelling A Heuristic for extractive agent flow rate in extractive distillationPlesu, ValentinCantero, SergioPlesu Popescu, Alexandra ElenaBonet i Ruiz, JordiIancu, PetricaLlorens Llacuna, JoanDestil·lacióAparells de destil·lacióHeurísticaDistillationDistillation apparatusHeuristicDistillation is the most widely used separation process for liquids separation in the industry. Even when the volatilities of the mixture are not favorable, then enhanced distillation is used. Extractive distillation is the enhanced distillation most widely used that consists in introducing a large flow rate of a third compound called extractive agent with a high boiling point that it is collected at the column bottoms and recovered in another column and reused again. Some heuristics are available for distillation column design, e.g. the optimum reflux is around 1.2 to 1.35 times the minimum reflux (or 1.1-1.2 times for refrigerated systems). Unfortunately, there is not a similar heuristic to determine the optimum extractive agent flow rate. Based on a literature review of rigorous simulations of extractive distillation processes, a heuristic is proposed that indicates that the optimum extractive distillation flow rate is which provides a Distillation Sequence Efficiency at 78 % of its maximum value. The maximum value is calculated assuming infinite flow rate of extractive agent. The Distillation Sequence Efficiency is a shortcut method available for distillation columns sequencing.AIDIC-The Italian Association of Chemical Engineering2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/147804Articles publicats en revistes (Enginyeria Química i Química Analítica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.3303/CET1870309Chemical Engineering Transactions , 2018, vol. 70, p. 1849-1854https://doi.org/10.3303/CET1870309(c) AIDIC-The Italian Association of Chemical Engineering, 2018info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1478042026-05-27T06:46:51Z
dc.title.none.fl_str_mv A Heuristic for extractive agent flow rate in extractive distillation
title A Heuristic for extractive agent flow rate in extractive distillation
spellingShingle A Heuristic for extractive agent flow rate in extractive distillation
Plesu, Valentin
Destil·lació
Aparells de destil·lació
Heurística
Distillation
Distillation apparatus
Heuristic
title_short A Heuristic for extractive agent flow rate in extractive distillation
title_full A Heuristic for extractive agent flow rate in extractive distillation
title_fullStr A Heuristic for extractive agent flow rate in extractive distillation
title_full_unstemmed A Heuristic for extractive agent flow rate in extractive distillation
title_sort A Heuristic for extractive agent flow rate in extractive distillation
dc.creator.none.fl_str_mv Plesu, Valentin
Cantero, Sergio
Plesu Popescu, Alexandra Elena
Bonet i Ruiz, Jordi
Iancu, Petrica
Llorens Llacuna, Joan
author Plesu, Valentin
author_facet Plesu, Valentin
Cantero, Sergio
Plesu Popescu, Alexandra Elena
Bonet i Ruiz, Jordi
Iancu, Petrica
Llorens Llacuna, Joan
author_role author
author2 Cantero, Sergio
Plesu Popescu, Alexandra Elena
Bonet i Ruiz, Jordi
Iancu, Petrica
Llorens Llacuna, Joan
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Destil·lació
Aparells de destil·lació
Heurística
Distillation
Distillation apparatus
Heuristic
topic Destil·lació
Aparells de destil·lació
Heurística
Distillation
Distillation apparatus
Heuristic
description Distillation is the most widely used separation process for liquids separation in the industry. Even when the volatilities of the mixture are not favorable, then enhanced distillation is used. Extractive distillation is the enhanced distillation most widely used that consists in introducing a large flow rate of a third compound called extractive agent with a high boiling point that it is collected at the column bottoms and recovered in another column and reused again. Some heuristics are available for distillation column design, e.g. the optimum reflux is around 1.2 to 1.35 times the minimum reflux (or 1.1-1.2 times for refrigerated systems). Unfortunately, there is not a similar heuristic to determine the optimum extractive agent flow rate. Based on a literature review of rigorous simulations of extractive distillation processes, a heuristic is proposed that indicates that the optimum extractive distillation flow rate is which provides a Distillation Sequence Efficiency at 78 % of its maximum value. The maximum value is calculated assuming infinite flow rate of extractive agent. The Distillation Sequence Efficiency is a shortcut method available for distillation columns sequencing.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/147804
url https://hdl.handle.net/2445/147804
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.3303/CET1870309
Chemical Engineering Transactions , 2018, vol. 70, p. 1849-1854
https://doi.org/10.3303/CET1870309
dc.rights.none.fl_str_mv (c) AIDIC-The Italian Association of Chemical Engineering, 2018
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) AIDIC-The Italian Association of Chemical Engineering, 2018
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv AIDIC-The Italian Association of Chemical Engineering
publisher.none.fl_str_mv AIDIC-The Italian Association of Chemical Engineering
dc.source.none.fl_str_mv Articles publicats en revistes (Enginyeria Química i Química Analítica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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