Influence of tangent pinch points on the energy demand of batch distillations: Development of a conceptual model for binary mixtures

Autores
Torres, Karina Andrea; Espinosa, Hector Jose Maria
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This contribution explores the influence of tangent pinch points on the performance of batch distillations of highly nonideal binary mixtures and its incorporation into a conceptual modeling framework under the assumption of a rectifier with an infinite number of stages. First of all, the y−x diagram is divided into three regions taking into account both the inflection point (IP) in the phase diagram and the slope of the equilibrium curve at xD = 1. After that, limiting values for the reflux ratio and distillate composition; namely, r* and xD*, are calculated for the instantaneous still composition xB with the aid of region-dependent algorithms, which incorporate the tangency condition in different ways. Finally, the instantaneous column performance is estimated taking into account the selected operation mode; i.e., constant reflux ratio or constant distillate composition. Applied to the mixture acetone−water, results for complete simulations are presented in terms of both rectification advance and operation time. A brief comparative study on the minimum energy demand required for a given separation as estimated from models with and without tangent pinches is also carried out.
Fil: Torres, Karina Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo y Diseño. Universidad Tecnológica Nacional. Facultad Regional Santa Fe. Instituto de Desarrollo y Diseño; Argentina
Fil: Espinosa, Hector Jose Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo y Diseño. Universidad Tecnológica Nacional. Facultad Regional Santa Fe. Instituto de Desarrollo y Diseño; Argentina
Materia
PINCH
ENERGY
DEMAND
BATCH
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/137169
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Influence of tangent pinch points on the energy demand of batch distillations: Development of a conceptual model for binary mixturesTorres, Karina AndreaEspinosa, Hector Jose MariaPINCHENERGYDEMANDBATCHhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2This contribution explores the influence of tangent pinch points on the performance of batch distillations of highly nonideal binary mixtures and its incorporation into a conceptual modeling framework under the assumption of a rectifier with an infinite number of stages. First of all, the y−x diagram is divided into three regions taking into account both the inflection point (IP) in the phase diagram and the slope of the equilibrium curve at xD = 1. After that, limiting values for the reflux ratio and distillate composition; namely, r* and xD*, are calculated for the instantaneous still composition xB with the aid of region-dependent algorithms, which incorporate the tangency condition in different ways. Finally, the instantaneous column performance is estimated taking into account the selected operation mode; i.e., constant reflux ratio or constant distillate composition. Applied to the mixture acetone−water, results for complete simulations are presented in terms of both rectification advance and operation time. A brief comparative study on the minimum energy demand required for a given separation as estimated from models with and without tangent pinches is also carried out.Fil: Torres, Karina Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo y Diseño. Universidad Tecnológica Nacional. Facultad Regional Santa Fe. Instituto de Desarrollo y Diseño; ArgentinaFil: Espinosa, Hector Jose Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo y Diseño. Universidad Tecnológica Nacional. Facultad Regional Santa Fe. Instituto de Desarrollo y Diseño; ArgentinaAmerican Chemical Society2011-04-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/137169Torres, Karina Andrea; Espinosa, Hector Jose Maria; Influence of tangent pinch points on the energy demand of batch distillations: Development of a conceptual model for binary mixtures; American Chemical Society; Industrial & Engineering Chemical Research; 50; 10; 8-4-2011; 6260-62750888-5885CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/ie101894qinfo:eu-repo/semantics/altIdentifier/doi/10.1021/ie101894qinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:13:12Zoai:ri.conicet.gov.ar:11336/137169instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:13:13.126CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Influence of tangent pinch points on the energy demand of batch distillations: Development of a conceptual model for binary mixtures
title Influence of tangent pinch points on the energy demand of batch distillations: Development of a conceptual model for binary mixtures
spellingShingle Influence of tangent pinch points on the energy demand of batch distillations: Development of a conceptual model for binary mixtures
Torres, Karina Andrea
PINCH
ENERGY
DEMAND
BATCH
title_short Influence of tangent pinch points on the energy demand of batch distillations: Development of a conceptual model for binary mixtures
title_full Influence of tangent pinch points on the energy demand of batch distillations: Development of a conceptual model for binary mixtures
title_fullStr Influence of tangent pinch points on the energy demand of batch distillations: Development of a conceptual model for binary mixtures
title_full_unstemmed Influence of tangent pinch points on the energy demand of batch distillations: Development of a conceptual model for binary mixtures
title_sort Influence of tangent pinch points on the energy demand of batch distillations: Development of a conceptual model for binary mixtures
dc.creator.none.fl_str_mv Torres, Karina Andrea
Espinosa, Hector Jose Maria
author Torres, Karina Andrea
author_facet Torres, Karina Andrea
Espinosa, Hector Jose Maria
author_role author
author2 Espinosa, Hector Jose Maria
author2_role author
dc.subject.none.fl_str_mv PINCH
ENERGY
DEMAND
BATCH
topic PINCH
ENERGY
DEMAND
BATCH
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv This contribution explores the influence of tangent pinch points on the performance of batch distillations of highly nonideal binary mixtures and its incorporation into a conceptual modeling framework under the assumption of a rectifier with an infinite number of stages. First of all, the y−x diagram is divided into three regions taking into account both the inflection point (IP) in the phase diagram and the slope of the equilibrium curve at xD = 1. After that, limiting values for the reflux ratio and distillate composition; namely, r* and xD*, are calculated for the instantaneous still composition xB with the aid of region-dependent algorithms, which incorporate the tangency condition in different ways. Finally, the instantaneous column performance is estimated taking into account the selected operation mode; i.e., constant reflux ratio or constant distillate composition. Applied to the mixture acetone−water, results for complete simulations are presented in terms of both rectification advance and operation time. A brief comparative study on the minimum energy demand required for a given separation as estimated from models with and without tangent pinches is also carried out.
Fil: Torres, Karina Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo y Diseño. Universidad Tecnológica Nacional. Facultad Regional Santa Fe. Instituto de Desarrollo y Diseño; Argentina
Fil: Espinosa, Hector Jose Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo y Diseño. Universidad Tecnológica Nacional. Facultad Regional Santa Fe. Instituto de Desarrollo y Diseño; Argentina
description This contribution explores the influence of tangent pinch points on the performance of batch distillations of highly nonideal binary mixtures and its incorporation into a conceptual modeling framework under the assumption of a rectifier with an infinite number of stages. First of all, the y−x diagram is divided into three regions taking into account both the inflection point (IP) in the phase diagram and the slope of the equilibrium curve at xD = 1. After that, limiting values for the reflux ratio and distillate composition; namely, r* and xD*, are calculated for the instantaneous still composition xB with the aid of region-dependent algorithms, which incorporate the tangency condition in different ways. Finally, the instantaneous column performance is estimated taking into account the selected operation mode; i.e., constant reflux ratio or constant distillate composition. Applied to the mixture acetone−water, results for complete simulations are presented in terms of both rectification advance and operation time. A brief comparative study on the minimum energy demand required for a given separation as estimated from models with and without tangent pinches is also carried out.
publishDate 2011
dc.date.none.fl_str_mv 2011-04-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/137169
Torres, Karina Andrea; Espinosa, Hector Jose Maria; Influence of tangent pinch points on the energy demand of batch distillations: Development of a conceptual model for binary mixtures; American Chemical Society; Industrial & Engineering Chemical Research; 50; 10; 8-4-2011; 6260-6275
0888-5885
CONICET Digital
CONICET
url http://hdl.handle.net/11336/137169
identifier_str_mv Torres, Karina Andrea; Espinosa, Hector Jose Maria; Influence of tangent pinch points on the energy demand of batch distillations: Development of a conceptual model for binary mixtures; American Chemical Society; Industrial & Engineering Chemical Research; 50; 10; 8-4-2011; 6260-6275
0888-5885
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/ie101894q
info:eu-repo/semantics/altIdentifier/doi/10.1021/ie101894q
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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