Concrete as low-cost catalyst to improve gas quality during biomass gasification in a pilot-scale gasifier
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , |
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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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 |
_version_ |
1817543849218670592 |