Heterogeneous Two-Region Model for Low-Aspect-Ratio Fixed-Bed Catalytic Reactors. Analysis of Fluid-Convective Contributions

Autores
Asensio, Daniela Anabel; Zambon, Mariana Teresa; Mazza, German Delfor; Barreto, Guillermo Fernando
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
ABSTRACT: A two-region, two-dimensional (2R2D) model aimed at improving the heat transfer description of multitubular catalytic reactors is introduced here. The effects concentrated in the wall thermal resistance (1/hw) of the standard 2D model (S2D model) are distributed in a fluid channel from the wall up to a distance of half-particle diameter and in the particle layer against the wall. The use of computational fluid dynamics (CFD) on regular arrays allowed estimations of two of the 2R2D key parameters: the heat transfer coefficient between wall and core channels hf and the ?true? wall-to-fluid coefficient hwf. The 2R2D and S2D models are compared at conditions when fluid mechanisms dominate radial heat exchange and reversible or irreversible catalytic reactions are carried out. The case of NH3 synthesis was taken as a basis of comparison. Significant differences are obtained in temperature predictions within the usual range of the tube-to-particle diameter ratio, 5 < N < 10, mainly for irreversible kinetics.
Fil: Asensio, Daniela Anabel. Instituto Multidisciplinario de Investigacion y Desarrollo de la Patagonia Norte; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Zambon, Mariana Teresa. Instituto Multidisciplinario de Investigacion y Desarrollo de la Patagonia Norte; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Mazza, German Delfor. Instituto Multidisciplinario de Investigacion y Desarrollo de la Patagonia Norte; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Barreto, Guillermo Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina. Universidad Nacional de La Plata. Facultad de Ingenieri­a. Departamento de Ingenieri­a Quimica; Argentina
Materia
Low-Aspect-Ratio
Fixed-Bed Catalytic Reactors
Fluid-Convective Contributions
Heat And Mass Transfer
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:11336/5431
Acceder
id CONICETDig_5f6c793506b64f046fc595bbe30adff4
oai_identifier_str oai:ri.conicet.gov.ar:11336/5431
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Heterogeneous Two-Region Model for Low-Aspect-Ratio Fixed-Bed Catalytic Reactors. Analysis of Fluid-Convective ContributionsAsensio, Daniela AnabelZambon, Mariana TeresaMazza, German DelforBarreto, Guillermo FernandoLow-Aspect-RatioFixed-Bed Catalytic ReactorsFluid-Convective ContributionsHeat And Mass Transferhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2ABSTRACT: A two-region, two-dimensional (2R2D) model aimed at improving the heat transfer description of multitubular catalytic reactors is introduced here. The effects concentrated in the wall thermal resistance (1/hw) of the standard 2D model (S2D model) are distributed in a fluid channel from the wall up to a distance of half-particle diameter and in the particle layer against the wall. The use of computational fluid dynamics (CFD) on regular arrays allowed estimations of two of the 2R2D key parameters: the heat transfer coefficient between wall and core channels hf and the ?true? wall-to-fluid coefficient hwf. The 2R2D and S2D models are compared at conditions when fluid mechanisms dominate radial heat exchange and reversible or irreversible catalytic reactions are carried out. The case of NH3 synthesis was taken as a basis of comparison. Significant differences are obtained in temperature predictions within the usual range of the tube-to-particle diameter ratio, 5 < N < 10, mainly for irreversible kinetics.Fil: Asensio, Daniela Anabel. Instituto Multidisciplinario de Investigacion y Desarrollo de la Patagonia Norte; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Zambon, Mariana Teresa. Instituto Multidisciplinario de Investigacion y Desarrollo de la Patagonia Norte; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Mazza, German Delfor. Instituto Multidisciplinario de Investigacion y Desarrollo de la Patagonia Norte; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Barreto, Guillermo Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina. Universidad Nacional de La Plata. Facultad de Ingenieri­a. Departamento de Ingenieri­a Quimica; ArgentinaAmerican Chemical Society2014-02-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5431Asensio, Daniela Anabel; Zambon, Mariana Teresa; Mazza, German Delfor; Barreto, Guillermo Fernando; Heterogeneous Two-Region Model for Low-Aspect-Ratio Fixed-Bed Catalytic Reactors. Analysis of Fluid-Convective Contributions; American Chemical Society; Industrial & Engineering Chemical Research; 53; 9; 21-2-2014; 3587-36050888-5885enginfo:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/doi/10.1021/ie403219qinfo:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/ie403219qinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:59:25Zoai:ri.conicet.gov.ar:11336/5431instacron: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:34982025-09-03 09:59:26.077CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Heterogeneous Two-Region Model for Low-Aspect-Ratio Fixed-Bed Catalytic Reactors. Analysis of Fluid-Convective Contributions
title Heterogeneous Two-Region Model for Low-Aspect-Ratio Fixed-Bed Catalytic Reactors. Analysis of Fluid-Convective Contributions
spellingShingle Heterogeneous Two-Region Model for Low-Aspect-Ratio Fixed-Bed Catalytic Reactors. Analysis of Fluid-Convective Contributions
Asensio, Daniela Anabel
Low-Aspect-Ratio
Fixed-Bed Catalytic Reactors
Fluid-Convective Contributions
Heat And Mass Transfer
title_short Heterogeneous Two-Region Model for Low-Aspect-Ratio Fixed-Bed Catalytic Reactors. Analysis of Fluid-Convective Contributions
title_full Heterogeneous Two-Region Model for Low-Aspect-Ratio Fixed-Bed Catalytic Reactors. Analysis of Fluid-Convective Contributions
title_fullStr Heterogeneous Two-Region Model for Low-Aspect-Ratio Fixed-Bed Catalytic Reactors. Analysis of Fluid-Convective Contributions
title_full_unstemmed Heterogeneous Two-Region Model for Low-Aspect-Ratio Fixed-Bed Catalytic Reactors. Analysis of Fluid-Convective Contributions
title_sort Heterogeneous Two-Region Model for Low-Aspect-Ratio Fixed-Bed Catalytic Reactors. Analysis of Fluid-Convective Contributions
dc.creator.none.fl_str_mv Asensio, Daniela Anabel
Zambon, Mariana Teresa
Mazza, German Delfor
Barreto, Guillermo Fernando
author Asensio, Daniela Anabel
author_facet Asensio, Daniela Anabel
Zambon, Mariana Teresa
Mazza, German Delfor
Barreto, Guillermo Fernando
author_role author
author2 Zambon, Mariana Teresa
Mazza, German Delfor
Barreto, Guillermo Fernando
author2_role author
author
author
dc.subject.none.fl_str_mv Low-Aspect-Ratio
Fixed-Bed Catalytic Reactors
Fluid-Convective Contributions
Heat And Mass Transfer
topic Low-Aspect-Ratio
Fixed-Bed Catalytic Reactors
Fluid-Convective Contributions
Heat And Mass Transfer
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv ABSTRACT: A two-region, two-dimensional (2R2D) model aimed at improving the heat transfer description of multitubular catalytic reactors is introduced here. The effects concentrated in the wall thermal resistance (1/hw) of the standard 2D model (S2D model) are distributed in a fluid channel from the wall up to a distance of half-particle diameter and in the particle layer against the wall. The use of computational fluid dynamics (CFD) on regular arrays allowed estimations of two of the 2R2D key parameters: the heat transfer coefficient between wall and core channels hf and the ?true? wall-to-fluid coefficient hwf. The 2R2D and S2D models are compared at conditions when fluid mechanisms dominate radial heat exchange and reversible or irreversible catalytic reactions are carried out. The case of NH3 synthesis was taken as a basis of comparison. Significant differences are obtained in temperature predictions within the usual range of the tube-to-particle diameter ratio, 5 < N < 10, mainly for irreversible kinetics.
Fil: Asensio, Daniela Anabel. Instituto Multidisciplinario de Investigacion y Desarrollo de la Patagonia Norte; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Zambon, Mariana Teresa. Instituto Multidisciplinario de Investigacion y Desarrollo de la Patagonia Norte; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Mazza, German Delfor. Instituto Multidisciplinario de Investigacion y Desarrollo de la Patagonia Norte; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Barreto, Guillermo Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina. Universidad Nacional de La Plata. Facultad de Ingenieri­a. Departamento de Ingenieri­a Quimica; Argentina
description ABSTRACT: A two-region, two-dimensional (2R2D) model aimed at improving the heat transfer description of multitubular catalytic reactors is introduced here. The effects concentrated in the wall thermal resistance (1/hw) of the standard 2D model (S2D model) are distributed in a fluid channel from the wall up to a distance of half-particle diameter and in the particle layer against the wall. The use of computational fluid dynamics (CFD) on regular arrays allowed estimations of two of the 2R2D key parameters: the heat transfer coefficient between wall and core channels hf and the ?true? wall-to-fluid coefficient hwf. The 2R2D and S2D models are compared at conditions when fluid mechanisms dominate radial heat exchange and reversible or irreversible catalytic reactions are carried out. The case of NH3 synthesis was taken as a basis of comparison. Significant differences are obtained in temperature predictions within the usual range of the tube-to-particle diameter ratio, 5 < N < 10, mainly for irreversible kinetics.
publishDate 2014
dc.date.none.fl_str_mv 2014-02-21
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/11336/5431
Asensio, Daniela Anabel; Zambon, Mariana Teresa; Mazza, German Delfor; Barreto, Guillermo Fernando; Heterogeneous Two-Region Model for Low-Aspect-Ratio Fixed-Bed Catalytic Reactors. Analysis of Fluid-Convective Contributions; American Chemical Society; Industrial & Engineering Chemical Research; 53; 9; 21-2-2014; 3587-3605
0888-5885
url http://hdl.handle.net/11336/5431
identifier_str_mv Asensio, Daniela Anabel; Zambon, Mariana Teresa; Mazza, German Delfor; Barreto, Guillermo Fernando; Heterogeneous Two-Region Model for Low-Aspect-Ratio Fixed-Bed Catalytic Reactors. Analysis of Fluid-Convective Contributions; American Chemical Society; Industrial & Engineering Chemical Research; 53; 9; 21-2-2014; 3587-3605
0888-5885
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/doi/10.1021/ie403219q
info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/ie403219q
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
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
_version_ 1842269579483545600
score 13.13397

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