Determination of reactivity and thermodynamic analysis of nickel-based oxygen carriers for chemical-looping combustion

This work aimed to study nickel-based oxygen carriers (OC) for Chemical Looping Combustion (CLC) using H2 and CH4 as fuel. The reactivity and reaction kinetics of the OC were investigated, applying the shrinking core, nucleation and diffusion models in three dimensions, as well as whether the OC is...

ver descrição completa

Na minha lista:
Detalhes bibliográficos
Principais autores: Figueiredo, Adolfo Lopes de, Carvalho, Fabiola Correia de, Nascimento, José Carlos, Ruiz, Juan A. C., Chiavone Filho, Osvaldo, Courtial, Camila Gambini Pereira
Formato: article
Idioma:English
Publicado em: Brazilian Society of Chemical Engineering
Assuntos:
Chemical looping combustion
Nickel oxide
Oxygen carrier
Endereço do item:https://repositorio.ufrn.br/handle/123456789/32358
Tags: Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
id ri-123456789-32358
record_format dspace
spelling ri-123456789-323582021-05-04T13:27:32Z Determination of reactivity and thermodynamic analysis of nickel-based oxygen carriers for chemical-looping combustion Figueiredo, Adolfo Lopes de Carvalho, Fabiola Correia de Nascimento, José Carlos Ruiz, Juan A. C. Chiavone Filho, Osvaldo Courtial, Camila Gambini Pereira Chemical looping combustion Chemical looping combustion Nickel oxide Nickel oxide Oxygen carrier Oxygen carrier This work aimed to study nickel-based oxygen carriers (OC) for Chemical Looping Combustion (CLC) using H2 and CH4 as fuel. The reactivity and reaction kinetics of the OC were investigated, applying the shrinking core, nucleation and diffusion models in three dimensions, as well as whether the OC is thermodynamically favorable for the reaction. The results showed that the OC achieved high conversion for both fuels, proving to be quite reactive, while the fuel gas concentration and the temperature have a strong effect on the solids conversion. For the H2 combustion, the reaction rate can be described well by the shrinking core model, whereas for CH4 the nucleation model may better represent the experimental data. With respect to reactions that occur in the reduction reactor with the NiO/Ni redox system, it was observed that, for the investigated temperatures used in CLC, high values of the equilibrium constant were obtained, showing that practically complete conversion of the fuels is possible 2021-05-04T13:27:30Z 2021-05-04T13:27:30Z 2019 article FIGUEREDO, A. L. ; CARVALHO, F. C. ; NASCIMENTO, J. C. ; RUIZ, J. A. C. ; CHIAVONE FILHO, O. ; PEREIRA, C. G. . Determination of reactivity and thermodynamic analysis of nickel-based oxygen carriers for chemical-looping combustion. Brazilian Journal of Chemical Engineering (on line), v. 36, p. 1155-1164, 2019. Disponível em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322019000301155&tlng=en. Acesso em: 30 mar. 2021. http://dx.doi.org/10.1590/0104-6632.20190363s20180271 0104-6632 1678-4383 https://repositorio.ufrn.br/handle/123456789/32358 10.1590/0104-6632.20190363s20180271 en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ application/pdf Brazilian Society of Chemical Engineering
institution Repositório Institucional
collection RI - UFRN
language English
topic Chemical looping combustion
Chemical looping combustion
Nickel oxide
Nickel oxide
Oxygen carrier
Oxygen carrier
spellingShingle Chemical looping combustion
Chemical looping combustion
Nickel oxide
Nickel oxide
Oxygen carrier
Oxygen carrier
Figueiredo, Adolfo Lopes de
Carvalho, Fabiola Correia de
Nascimento, José Carlos
Ruiz, Juan A. C.
Chiavone Filho, Osvaldo
Courtial, Camila Gambini Pereira
Determination of reactivity and thermodynamic analysis of nickel-based oxygen carriers for chemical-looping combustion
description This work aimed to study nickel-based oxygen carriers (OC) for Chemical Looping Combustion (CLC) using H2 and CH4 as fuel. The reactivity and reaction kinetics of the OC were investigated, applying the shrinking core, nucleation and diffusion models in three dimensions, as well as whether the OC is thermodynamically favorable for the reaction. The results showed that the OC achieved high conversion for both fuels, proving to be quite reactive, while the fuel gas concentration and the temperature have a strong effect on the solids conversion. For the H2 combustion, the reaction rate can be described well by the shrinking core model, whereas for CH4 the nucleation model may better represent the experimental data. With respect to reactions that occur in the reduction reactor with the NiO/Ni redox system, it was observed that, for the investigated temperatures used in CLC, high values of the equilibrium constant were obtained, showing that practically complete conversion of the fuels is possible
format article
author Figueiredo, Adolfo Lopes de
Carvalho, Fabiola Correia de
Nascimento, José Carlos
Ruiz, Juan A. C.
Chiavone Filho, Osvaldo
Courtial, Camila Gambini Pereira
author_facet Figueiredo, Adolfo Lopes de
Carvalho, Fabiola Correia de
Nascimento, José Carlos
Ruiz, Juan A. C.
Chiavone Filho, Osvaldo
Courtial, Camila Gambini Pereira
author_sort Figueiredo, Adolfo Lopes de
title Determination of reactivity and thermodynamic analysis of nickel-based oxygen carriers for chemical-looping combustion
title_short Determination of reactivity and thermodynamic analysis of nickel-based oxygen carriers for chemical-looping combustion
title_full Determination of reactivity and thermodynamic analysis of nickel-based oxygen carriers for chemical-looping combustion
title_fullStr Determination of reactivity and thermodynamic analysis of nickel-based oxygen carriers for chemical-looping combustion
title_full_unstemmed Determination of reactivity and thermodynamic analysis of nickel-based oxygen carriers for chemical-looping combustion
title_sort determination of reactivity and thermodynamic analysis of nickel-based oxygen carriers for chemical-looping combustion
publisher Brazilian Society of Chemical Engineering
publishDate 2021
url https://repositorio.ufrn.br/handle/123456789/32358
work_keys_str_mv AT figueiredoadolfolopesde determinationofreactivityandthermodynamicanalysisofnickelbasedoxygencarriersforchemicalloopingcombustion
AT carvalhofabiolacorreiade determinationofreactivityandthermodynamicanalysisofnickelbasedoxygencarriersforchemicalloopingcombustion
AT nascimentojosecarlos determinationofreactivityandthermodynamicanalysisofnickelbasedoxygencarriersforchemicalloopingcombustion
AT ruizjuanac determinationofreactivityandthermodynamicanalysisofnickelbasedoxygencarriersforchemicalloopingcombustion
AT chiavonefilhoosvaldo determinationofreactivityandthermodynamicanalysisofnickelbasedoxygencarriersforchemicalloopingcombustion
AT courtialcamilagambinipereira determinationofreactivityandthermodynamicanalysisofnickelbasedoxygencarriersforchemicalloopingcombustion
_version_ 1773966962247860224

Registros relacionados