Concrete as low-cost catalyst to improve gas quality during biomass gasification in a pilot-scale gasifier

Detalhes bibliográficos
Autor(a) principal: Pio, D.T.
Data de Publicação: 2021
Outros Autores: Gomes, H.G.M.F., Ruivo, L.C.M., Matos, M. A.A., Monteiro, J. F., Frade, J.R., Tarelho, L.A.C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/36956
Resumo: Concrete was evaluated as low-cost catalyst for in-situ application in an autothermal 80 kWth pilot-scale bubbling fluidized bed direct (air) biomass gasifier. To improve the understanding of the observed phenomena, the process was also evaluated in smaller-scale reactive system, namely an externally heated 3 kWth bench-scale bubbling fluidized bed. Concrete application showed promising results regarding the relative increase of H2 concentration and H2/CO molar ratio in the producer gas (up to 99.2 and 77.4%, respectively), indicating that this material can promote the water-gas shift reaction. However, this effect was dependent on the gas-solid contact time and catalyst temperature, being that it was only relevant when these parameters were at least 5.2 s and 746 °C, respectively. A maximum lower heating value of 7.5 MJ/Nm3 of the producer gas was found with concrete application (23.8% relative increase), which is higher than commonly found in the literature. Relative increases of up to 25.1, 55.3 and 47.0% for the specific dry gas production, cold gas efficiency and carbon conversion efficiency, respectively, were also found, consequently suggesting that, in addition to the promotion of the water-gas shift reaction, this material has potential to promote tar reforming/cracking and carbon gasification reactions.
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spelling Concrete as low-cost catalyst to improve gas quality during biomass gasification in a pilot-scale gasifierCatalystConcreteBiomassGasificationBubbling fluidized bedConcrete was evaluated as low-cost catalyst for in-situ application in an autothermal 80 kWth pilot-scale bubbling fluidized bed direct (air) biomass gasifier. To improve the understanding of the observed phenomena, the process was also evaluated in smaller-scale reactive system, namely an externally heated 3 kWth bench-scale bubbling fluidized bed. Concrete application showed promising results regarding the relative increase of H2 concentration and H2/CO molar ratio in the producer gas (up to 99.2 and 77.4%, respectively), indicating that this material can promote the water-gas shift reaction. However, this effect was dependent on the gas-solid contact time and catalyst temperature, being that it was only relevant when these parameters were at least 5.2 s and 746 °C, respectively. A maximum lower heating value of 7.5 MJ/Nm3 of the producer gas was found with concrete application (23.8% relative increase), which is higher than commonly found in the literature. Relative increases of up to 25.1, 55.3 and 47.0% for the specific dry gas production, cold gas efficiency and carbon conversion efficiency, respectively, were also found, consequently suggesting that, in addition to the promotion of the water-gas shift reaction, this material has potential to promote tar reforming/cracking and carbon gasification reactions.Elsevier2023-10-15T00:00:00Z2021-10-15T00:00:00Z2021-10-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/36956eng0360-544210.1016/j.energy.2021.120931Pio, D.T.Gomes, H.G.M.F.Ruivo, L.C.M.Matos, M. A.A.Monteiro, J. F.Frade, J.R.Tarelho, L.A.C.info:eu-repo/semantics/embargoedAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-05-06T04:44:24Zoai:ria.ua.pt:10773/36956Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-06T04:44:24Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Concrete as low-cost catalyst to improve gas quality during biomass gasification in a pilot-scale gasifier
title Concrete as low-cost catalyst to improve gas quality during biomass gasification in a pilot-scale gasifier
spellingShingle Concrete as low-cost catalyst to improve gas quality during biomass gasification in a pilot-scale gasifier
Pio, D.T.
Catalyst
Concrete
Biomass
Gasification
Bubbling fluidized bed
title_short Concrete as low-cost catalyst to improve gas quality during biomass gasification in a pilot-scale gasifier
title_full Concrete as low-cost catalyst to improve gas quality during biomass gasification in a pilot-scale gasifier
title_fullStr Concrete as low-cost catalyst to improve gas quality during biomass gasification in a pilot-scale gasifier
title_full_unstemmed Concrete as low-cost catalyst to improve gas quality during biomass gasification in a pilot-scale gasifier
title_sort Concrete as low-cost catalyst to improve gas quality during biomass gasification in a pilot-scale gasifier
author Pio, D.T.
author_facet Pio, D.T.
Gomes, H.G.M.F.
Ruivo, L.C.M.
Matos, M. A.A.
Monteiro, J. F.
Frade, J.R.
Tarelho, L.A.C.
author_role author
author2 Gomes, H.G.M.F.
Ruivo, L.C.M.
Matos, M. A.A.
Monteiro, J. F.
Frade, J.R.
Tarelho, L.A.C.
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Pio, D.T.
Gomes, H.G.M.F.
Ruivo, L.C.M.
Matos, M. A.A.
Monteiro, J. F.
Frade, J.R.
Tarelho, L.A.C.
dc.subject.por.fl_str_mv Catalyst
Concrete
Biomass
Gasification
Bubbling fluidized bed
topic Catalyst
Concrete
Biomass
Gasification
Bubbling fluidized bed
description Concrete was evaluated as low-cost catalyst for in-situ application in an autothermal 80 kWth pilot-scale bubbling fluidized bed direct (air) biomass gasifier. To improve the understanding of the observed phenomena, the process was also evaluated in smaller-scale reactive system, namely an externally heated 3 kWth bench-scale bubbling fluidized bed. Concrete application showed promising results regarding the relative increase of H2 concentration and H2/CO molar ratio in the producer gas (up to 99.2 and 77.4%, respectively), indicating that this material can promote the water-gas shift reaction. However, this effect was dependent on the gas-solid contact time and catalyst temperature, being that it was only relevant when these parameters were at least 5.2 s and 746 °C, respectively. A maximum lower heating value of 7.5 MJ/Nm3 of the producer gas was found with concrete application (23.8% relative increase), which is higher than commonly found in the literature. Relative increases of up to 25.1, 55.3 and 47.0% for the specific dry gas production, cold gas efficiency and carbon conversion efficiency, respectively, were also found, consequently suggesting that, in addition to the promotion of the water-gas shift reaction, this material has potential to promote tar reforming/cracking and carbon gasification reactions.
publishDate 2021
dc.date.none.fl_str_mv 2021-10-15T00:00:00Z
2021-10-15
2023-10-15T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/36956
url http://hdl.handle.net/10773/36956
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0360-5442
10.1016/j.energy.2021.120931
dc.rights.driver.fl_str_mv info:eu-repo/semantics/embargoedAccess
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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