Simulation of a low temperature water gas shift reactor using the heterogeneous model/application to a pem fuel cell

Mostrar todas las versiones(2)

In the last few years, a renewed interest in the water gas shift (WGS) reaction at low temperature has arisen due to its application to fuel cells. In this work, a simulation of a fixed bed reactor for this reaction, which forms part of a hydrogen production-purification train for a 10 kW PEM fuel c...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Giunta, P., Amadeo, N., Laborde, M.
Formato: JOUR
Materias:
Fuel cell
Hydrogen production
WGS reactor design
Catalysts
Computer simulation
Concentration (process)
Fuel cells
Mathematical models
Thermal effects
Pellets
Reactor volume
Water gas shift (WGS) reactor design
Chemical reactors
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03787753_v156_n2_p489_Giunta
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_03787753_v156_n2_p489_Giunta
record_format dspace
spelling todo:paper_03787753_v156_n2_p489_Giunta2023-10-03T15:33:14Z Simulation of a low temperature water gas shift reactor using the heterogeneous model/application to a pem fuel cell Giunta, P. Amadeo, N. Laborde, M. Fuel cell Hydrogen production WGS reactor design Catalysts Computer simulation Concentration (process) Fuel cells Mathematical models Thermal effects Hydrogen production Pellets Reactor volume Water gas shift (WGS) reactor design Chemical reactors In the last few years, a renewed interest in the water gas shift (WGS) reaction at low temperature has arisen due to its application to fuel cells. In this work, a simulation of a fixed bed reactor for this reaction, which forms part of a hydrogen production-purification train for a 10 kW PEM fuel cell using ethanol as the raw material, was carried out. A commercial Cu/Zn/Ba/Al2O3 catalyst was employed and a one-dimensional heterogeneous model was applied for the simulation. The catalyst deactivation due to thermal factors (sintering) was taken into account in the model. Isothermal and adiabatic regimes were analyzed as well. Results of the simulation indicate that the pellet can be considered isothermal but temperature gradients in the film cannot be disregarded. On the other hand, concentration gradients in the film can be ignored but CO profiles are established inside the pellet. Adiabatic operation can be recommended because of its simplicity of operation and construction. The reactor volume is strongly sensitive to the CO outlet concentration at CO levels lower than 6000 ppm. For a 10 kW PEM fuel cell, using adequate pellet size and taking into account the catalyst deactivation, a reactor volume of 0.64 l would be enough to obtain an outlet CO concentration of about 7160 ppm. This concentration value can be handled by the next purification stage, COPROX. © 2005 Elsevier B.V. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03787753_v156_n2_p489_Giunta
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Fuel cell
Hydrogen production
WGS reactor design
Catalysts
Computer simulation
Concentration (process)
Fuel cells
Mathematical models
Thermal effects
Hydrogen production
Pellets
Reactor volume
Water gas shift (WGS) reactor design
Chemical reactors
spellingShingle Fuel cell
Hydrogen production
WGS reactor design
Catalysts
Computer simulation
Concentration (process)
Fuel cells
Mathematical models
Thermal effects
Hydrogen production
Pellets
Reactor volume
Water gas shift (WGS) reactor design
Chemical reactors
Giunta, P.
Amadeo, N.
Laborde, M.
Simulation of a low temperature water gas shift reactor using the heterogeneous model/application to a pem fuel cell
topic_facet Fuel cell
Hydrogen production
WGS reactor design
Catalysts
Computer simulation
Concentration (process)
Fuel cells
Mathematical models
Thermal effects
Hydrogen production
Pellets
Reactor volume
Water gas shift (WGS) reactor design
Chemical reactors
description In the last few years, a renewed interest in the water gas shift (WGS) reaction at low temperature has arisen due to its application to fuel cells. In this work, a simulation of a fixed bed reactor for this reaction, which forms part of a hydrogen production-purification train for a 10 kW PEM fuel cell using ethanol as the raw material, was carried out. A commercial Cu/Zn/Ba/Al2O3 catalyst was employed and a one-dimensional heterogeneous model was applied for the simulation. The catalyst deactivation due to thermal factors (sintering) was taken into account in the model. Isothermal and adiabatic regimes were analyzed as well. Results of the simulation indicate that the pellet can be considered isothermal but temperature gradients in the film cannot be disregarded. On the other hand, concentration gradients in the film can be ignored but CO profiles are established inside the pellet. Adiabatic operation can be recommended because of its simplicity of operation and construction. The reactor volume is strongly sensitive to the CO outlet concentration at CO levels lower than 6000 ppm. For a 10 kW PEM fuel cell, using adequate pellet size and taking into account the catalyst deactivation, a reactor volume of 0.64 l would be enough to obtain an outlet CO concentration of about 7160 ppm. This concentration value can be handled by the next purification stage, COPROX. © 2005 Elsevier B.V. All rights reserved.
format JOUR
author Giunta, P.
Amadeo, N.
Laborde, M.
author_facet Giunta, P.
Amadeo, N.
Laborde, M.
author_sort Giunta, P.
title Simulation of a low temperature water gas shift reactor using the heterogeneous model/application to a pem fuel cell
title_short Simulation of a low temperature water gas shift reactor using the heterogeneous model/application to a pem fuel cell
title_full Simulation of a low temperature water gas shift reactor using the heterogeneous model/application to a pem fuel cell
title_fullStr Simulation of a low temperature water gas shift reactor using the heterogeneous model/application to a pem fuel cell
title_full_unstemmed Simulation of a low temperature water gas shift reactor using the heterogeneous model/application to a pem fuel cell
title_sort simulation of a low temperature water gas shift reactor using the heterogeneous model/application to a pem fuel cell
url http://hdl.handle.net/20.500.12110/paper_03787753_v156_n2_p489_Giunta
work_keys_str_mv AT giuntap simulationofalowtemperaturewatergasshiftreactorusingtheheterogeneousmodelapplicationtoapemfuelcell
AT amadeon simulationofalowtemperaturewatergasshiftreactorusingtheheterogeneousmodelapplicationtoapemfuelcell
AT labordem simulationofalowtemperaturewatergasshiftreactorusingtheheterogeneousmodelapplicationtoapemfuelcell
_version_ 1807316353999175680

Ejemplares similares