Use of chemical fractionation to understand partitioning of biomass ash constituents during co-firing in fluidized bed combustion

Detalhes bibliográficos
Autor(a) principal: Teixeira, P. Alexandra
Data de Publicação: 2012
Outros Autores: Lopes, Helena, Gulyurtlu, Ibrahim, Lapa, Nuno
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.9/2476
Resumo: Three species of biomass origin (straw pellets, olive cake and wood pellets) and two coals from different countries (Coal Polish and Coal Colombian) have been studied to understand the fate of their ash forming matter during the combustion process and to investigate the influence of co-firing biomass with coal. Three different approaches to investigate the ash behaviour were employed: (1) chemical fractionation analysis to evaluate the association/reactivity of ash forming elements in the fuels as a prediction tool, (2) establishment of elements partitioning in ash streams produced in the combustion and co-combustion trials, and (3) evaluation of enrichment factors of elements in the ash streams. The chemical fractionation analysis was applied to all fuels used to evaluate how the association/reactivity of elements making up ash may influence their behaviour during combustion. Combustion tests were carried out on a pilot scale fluidized bed combustor (FBC). Four ash streams were obtained at different locations. The uncertainty of measurements was estimated allowing a critical evaluation of mass balances over the combustion system and the partitioning of elements in the ash streams. The enrichment factors of elements in the several ash streams were estimated, incorporating uncertainties associated with analytical measurements. Results obtained showed that for FBC the relation between the chemical fractionation and the experimental partitioning is strongly affected by elutriation of particles. The element enrichment factor estimated for each ash stream, using Al as a reference element, revealed better correlations with the elements reactivity obtained by chemical fractionation because it overcomes particles elutriation effects. Nevertheless, it was observed that the reactivity estimated by chemical fractionation could not be solely interpreted as tendency of the elements to volatilize on FBC system, as reaction in bed zone of boiler may also occur retaining reactive elements.
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spelling Use of chemical fractionation to understand partitioning of biomass ash constituents during co-firing in fluidized bed combustionChemical fractionationPartitioningAshesBiomassCo-firingThree species of biomass origin (straw pellets, olive cake and wood pellets) and two coals from different countries (Coal Polish and Coal Colombian) have been studied to understand the fate of their ash forming matter during the combustion process and to investigate the influence of co-firing biomass with coal. Three different approaches to investigate the ash behaviour were employed: (1) chemical fractionation analysis to evaluate the association/reactivity of ash forming elements in the fuels as a prediction tool, (2) establishment of elements partitioning in ash streams produced in the combustion and co-combustion trials, and (3) evaluation of enrichment factors of elements in the ash streams. The chemical fractionation analysis was applied to all fuels used to evaluate how the association/reactivity of elements making up ash may influence their behaviour during combustion. Combustion tests were carried out on a pilot scale fluidized bed combustor (FBC). Four ash streams were obtained at different locations. The uncertainty of measurements was estimated allowing a critical evaluation of mass balances over the combustion system and the partitioning of elements in the ash streams. The enrichment factors of elements in the several ash streams were estimated, incorporating uncertainties associated with analytical measurements. Results obtained showed that for FBC the relation between the chemical fractionation and the experimental partitioning is strongly affected by elutriation of particles. The element enrichment factor estimated for each ash stream, using Al as a reference element, revealed better correlations with the elements reactivity obtained by chemical fractionation because it overcomes particles elutriation effects. Nevertheless, it was observed that the reactivity estimated by chemical fractionation could not be solely interpreted as tendency of the elements to volatilize on FBC system, as reaction in bed zone of boiler may also occur retaining reactive elements.ElsevierRepositório do LNEGTeixeira, P. AlexandraLopes, HelenaGulyurtlu, IbrahimLapa, Nuno2014-05-14T10:52:17Z2012-01-01T00:00:00Z2012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/2476engTeixeira, P.; Lopes, H.; Gulyurtlu, I.; Lapa, N. Use of chemical fractionation to understand partitioning of biomass ash constituents during co-firing in fluidized bed combustion. In: Fuel, 2012, Vol. 101, p. 215-2270016-2361info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-09-06T12:27:31Zoai:repositorio.lneg.pt:10400.9/2476Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:35:22.195447Repositório 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 Use of chemical fractionation to understand partitioning of biomass ash constituents during co-firing in fluidized bed combustion
title Use of chemical fractionation to understand partitioning of biomass ash constituents during co-firing in fluidized bed combustion
spellingShingle Use of chemical fractionation to understand partitioning of biomass ash constituents during co-firing in fluidized bed combustion
Teixeira, P. Alexandra
Chemical fractionation
Partitioning
Ashes
Biomass
Co-firing
title_short Use of chemical fractionation to understand partitioning of biomass ash constituents during co-firing in fluidized bed combustion
title_full Use of chemical fractionation to understand partitioning of biomass ash constituents during co-firing in fluidized bed combustion
title_fullStr Use of chemical fractionation to understand partitioning of biomass ash constituents during co-firing in fluidized bed combustion
title_full_unstemmed Use of chemical fractionation to understand partitioning of biomass ash constituents during co-firing in fluidized bed combustion
title_sort Use of chemical fractionation to understand partitioning of biomass ash constituents during co-firing in fluidized bed combustion
author Teixeira, P. Alexandra
author_facet Teixeira, P. Alexandra
Lopes, Helena
Gulyurtlu, Ibrahim
Lapa, Nuno
author_role author
author2 Lopes, Helena
Gulyurtlu, Ibrahim
Lapa, Nuno
author2_role author
author
author
dc.contributor.none.fl_str_mv Repositório do LNEG
dc.contributor.author.fl_str_mv Teixeira, P. Alexandra
Lopes, Helena
Gulyurtlu, Ibrahim
Lapa, Nuno
dc.subject.por.fl_str_mv Chemical fractionation
Partitioning
Ashes
Biomass
Co-firing
topic Chemical fractionation
Partitioning
Ashes
Biomass
Co-firing
description Three species of biomass origin (straw pellets, olive cake and wood pellets) and two coals from different countries (Coal Polish and Coal Colombian) have been studied to understand the fate of their ash forming matter during the combustion process and to investigate the influence of co-firing biomass with coal. Three different approaches to investigate the ash behaviour were employed: (1) chemical fractionation analysis to evaluate the association/reactivity of ash forming elements in the fuels as a prediction tool, (2) establishment of elements partitioning in ash streams produced in the combustion and co-combustion trials, and (3) evaluation of enrichment factors of elements in the ash streams. The chemical fractionation analysis was applied to all fuels used to evaluate how the association/reactivity of elements making up ash may influence their behaviour during combustion. Combustion tests were carried out on a pilot scale fluidized bed combustor (FBC). Four ash streams were obtained at different locations. The uncertainty of measurements was estimated allowing a critical evaluation of mass balances over the combustion system and the partitioning of elements in the ash streams. The enrichment factors of elements in the several ash streams were estimated, incorporating uncertainties associated with analytical measurements. Results obtained showed that for FBC the relation between the chemical fractionation and the experimental partitioning is strongly affected by elutriation of particles. The element enrichment factor estimated for each ash stream, using Al as a reference element, revealed better correlations with the elements reactivity obtained by chemical fractionation because it overcomes particles elutriation effects. Nevertheless, it was observed that the reactivity estimated by chemical fractionation could not be solely interpreted as tendency of the elements to volatilize on FBC system, as reaction in bed zone of boiler may also occur retaining reactive elements.
publishDate 2012
dc.date.none.fl_str_mv 2012-01-01T00:00:00Z
2012-01-01T00:00:00Z
2014-05-14T10:52:17Z
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/10400.9/2476
url http://hdl.handle.net/10400.9/2476
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Teixeira, P.; Lopes, H.; Gulyurtlu, I.; Lapa, N. Use of chemical fractionation to understand partitioning of biomass ash constituents during co-firing in fluidized bed combustion. In: Fuel, 2012, Vol. 101, p. 215-227
0016-2361
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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
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