Alternative designs for a catalytic converter operating under autothermal conditions

Autores
Lopez, Eduardo; Errazu, Alberto Felipe; Borio, Daniel Oscar; Bucala, Veronica
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This paper focuses on the study of two different autothermal designs of a catalytic combustor, based on natural gas oxidation for heat generation. The feed is preheated by means of two different alternatives: (a) indirect heat exchange between the products and feed streams (Design I), (b) direct heat exchange by recycling a fraction of the hot gases leaving the catalytic combustor (Design II). Steady-state and dynamic results have demonstrated that autothermal catalytic units, after an appropriate start-up procedure, can operate with high methane conversion, without exceeding the maximum allowable temperature and minimizing harmful emissions such as NO(x) (to preheat the reactants, the flame of conventional units is replaced by a heat feedback of a fraction of the total heat generated by the catalytic combustor). Due to the dilution originated by the recycle stream (which admits the use of higher methane molar fractions in the fresh feed stream) Design II appears as the most convenient alternative because it can provide significantly higher heat fluxes than Design I for the same process constraints. Moreover, Design II can provide an exit stream at the highest thermal level (for a given maximum allowable temperature) feasible for an autothermal converter.
Fil: Lopez, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Errazu, Alberto Felipe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Borio, Daniel Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Bucala, Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Materia
Autothermal Reactor
Catalytic Combustion
Catalytic Combustor
Monolith
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:11336/37689
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Alternative designs for a catalytic converter operating under autothermal conditionsLopez, EduardoErrazu, Alberto FelipeBorio, Daniel OscarBucala, VeronicaAutothermal ReactorCatalytic CombustionCatalytic CombustorMonolithhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2This paper focuses on the study of two different autothermal designs of a catalytic combustor, based on natural gas oxidation for heat generation. The feed is preheated by means of two different alternatives: (a) indirect heat exchange between the products and feed streams (Design I), (b) direct heat exchange by recycling a fraction of the hot gases leaving the catalytic combustor (Design II). Steady-state and dynamic results have demonstrated that autothermal catalytic units, after an appropriate start-up procedure, can operate with high methane conversion, without exceeding the maximum allowable temperature and minimizing harmful emissions such as NO(x) (to preheat the reactants, the flame of conventional units is replaced by a heat feedback of a fraction of the total heat generated by the catalytic combustor). Due to the dilution originated by the recycle stream (which admits the use of higher methane molar fractions in the fresh feed stream) Design II appears as the most convenient alternative because it can provide significantly higher heat fluxes than Design I for the same process constraints. Moreover, Design II can provide an exit stream at the highest thermal level (for a given maximum allowable temperature) feasible for an autothermal converter.Fil: Lopez, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Errazu, Alberto Felipe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Borio, Daniel Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Bucala, Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaPergamon-Elsevier Science Ltd2000-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/37689Lopez, Eduardo; Errazu, Alberto Felipe; Borio, Daniel Oscar; Bucala, Veronica; Alternative designs for a catalytic converter operating under autothermal conditions; Pergamon-Elsevier Science Ltd; Chemical Engineering Science; 55; 12; 6-2000; 2143-21500009-2509CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0009250999004777info:eu-repo/semantics/altIdentifier/doi/10.1016/S0009-2509(99)00477-7info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:45:28Zoai:ri.conicet.gov.ar:11336/37689instacron: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 09:45:29.194CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Alternative designs for a catalytic converter operating under autothermal conditions
title Alternative designs for a catalytic converter operating under autothermal conditions
spellingShingle Alternative designs for a catalytic converter operating under autothermal conditions
Lopez, Eduardo
Autothermal Reactor
Catalytic Combustion
Catalytic Combustor
Monolith
title_short Alternative designs for a catalytic converter operating under autothermal conditions
title_full Alternative designs for a catalytic converter operating under autothermal conditions
title_fullStr Alternative designs for a catalytic converter operating under autothermal conditions
title_full_unstemmed Alternative designs for a catalytic converter operating under autothermal conditions
title_sort Alternative designs for a catalytic converter operating under autothermal conditions
dc.creator.none.fl_str_mv Lopez, Eduardo
Errazu, Alberto Felipe
Borio, Daniel Oscar
Bucala, Veronica
author Lopez, Eduardo
author_facet Lopez, Eduardo
Errazu, Alberto Felipe
Borio, Daniel Oscar
Bucala, Veronica
author_role author
author2 Errazu, Alberto Felipe
Borio, Daniel Oscar
Bucala, Veronica
author2_role author
author
author
dc.subject.none.fl_str_mv Autothermal Reactor
Catalytic Combustion
Catalytic Combustor
Monolith
topic Autothermal Reactor
Catalytic Combustion
Catalytic Combustor
Monolith
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 paper focuses on the study of two different autothermal designs of a catalytic combustor, based on natural gas oxidation for heat generation. The feed is preheated by means of two different alternatives: (a) indirect heat exchange between the products and feed streams (Design I), (b) direct heat exchange by recycling a fraction of the hot gases leaving the catalytic combustor (Design II). Steady-state and dynamic results have demonstrated that autothermal catalytic units, after an appropriate start-up procedure, can operate with high methane conversion, without exceeding the maximum allowable temperature and minimizing harmful emissions such as NO(x) (to preheat the reactants, the flame of conventional units is replaced by a heat feedback of a fraction of the total heat generated by the catalytic combustor). Due to the dilution originated by the recycle stream (which admits the use of higher methane molar fractions in the fresh feed stream) Design II appears as the most convenient alternative because it can provide significantly higher heat fluxes than Design I for the same process constraints. Moreover, Design II can provide an exit stream at the highest thermal level (for a given maximum allowable temperature) feasible for an autothermal converter.
Fil: Lopez, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Errazu, Alberto Felipe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Borio, Daniel Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Bucala, Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
description This paper focuses on the study of two different autothermal designs of a catalytic combustor, based on natural gas oxidation for heat generation. The feed is preheated by means of two different alternatives: (a) indirect heat exchange between the products and feed streams (Design I), (b) direct heat exchange by recycling a fraction of the hot gases leaving the catalytic combustor (Design II). Steady-state and dynamic results have demonstrated that autothermal catalytic units, after an appropriate start-up procedure, can operate with high methane conversion, without exceeding the maximum allowable temperature and minimizing harmful emissions such as NO(x) (to preheat the reactants, the flame of conventional units is replaced by a heat feedback of a fraction of the total heat generated by the catalytic combustor). Due to the dilution originated by the recycle stream (which admits the use of higher methane molar fractions in the fresh feed stream) Design II appears as the most convenient alternative because it can provide significantly higher heat fluxes than Design I for the same process constraints. Moreover, Design II can provide an exit stream at the highest thermal level (for a given maximum allowable temperature) feasible for an autothermal converter.
publishDate 2000
dc.date.none.fl_str_mv 2000-06
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/11336/37689
Lopez, Eduardo; Errazu, Alberto Felipe; Borio, Daniel Oscar; Bucala, Veronica; Alternative designs for a catalytic converter operating under autothermal conditions; Pergamon-Elsevier Science Ltd; Chemical Engineering Science; 55; 12; 6-2000; 2143-2150
0009-2509
CONICET Digital
CONICET
url http://hdl.handle.net/11336/37689
identifier_str_mv Lopez, Eduardo; Errazu, Alberto Felipe; Borio, Daniel Oscar; Bucala, Veronica; Alternative designs for a catalytic converter operating under autothermal conditions; Pergamon-Elsevier Science Ltd; Chemical Engineering Science; 55; 12; 6-2000; 2143-2150
0009-2509
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://www.sciencedirect.com/science/article/pii/S0009250999004777
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0009-2509(99)00477-7
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
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
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 13.13397

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