Ignition behavior of coal and biomass blends under oxy-firing conditions with steam additions

The ignition behavior of coal and biomass blends was assessed in air and oxy-firing conditions in an entrained flow reactor. Four coals of different rank, an anthracite, a semi-anthracite, and two high-volatile bituminous coals, were tested in air and O2/CO2 (21–35% O2) environments. For all the coa...

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Autores: Riaza Benito, Juan, Álvarez González, Lucía, Gil Matellanes, María Victoria, Khatami, Reza, Levendis, Yiannis A., Pis Martínez, José Juan, Pevida García, Covadonga, Rubiera González, Fernando
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2013
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/112316
Acceso en línea:http://hdl.handle.net/10261/112316
Access Level:acceso abierto
Palabra clave:Biomass
Coal
Ignition behavior
Oxy-combustion
Steam
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spelling Ignition behavior of coal and biomass blends under oxy-firing conditions with steam additionsRiaza Benito, JuanÁlvarez González, LucíaGil Matellanes, María VictoriaKhatami, RezaLevendis, Yiannis A.Pis Martínez, José JuanPevida García, CovadongaRubiera González, FernandoBiomassCoalIgnition behaviorOxy-combustionSteamThe ignition behavior of coal and biomass blends was assessed in air and oxy-firing conditions in an entrained flow reactor. Four coals of different rank, an anthracite, a semi-anthracite, and two high-volatile bituminous coals, were tested in air and O2/CO2 (21–35% O2) environments. For all the coals, deterioration in ignition properties was observed in the 21%O2/79%CO2 atmosphere in comparison with air. However, the ignition properties were enhanced when the oxygen concentration in the O2/CO2 mixture was increased. Coal and biomass blends of a semi-anthracite and a high-volatile bituminous coal with 10 and 20 wt% of olive residue were also used in the ignition experiments under air and oxy-firing conditions. The ignition behavior of the coals improved as the additions of biomass increased both in air and oxy-firing conditions. In particular, the effect of biomass blending was more noticeable in the ignition of the high rank coal. Since industrial oxy-coal combustion with a wet recycle would result in higher concentrations of H2O(v), the effect of steam addition on ignition behavior was also studied. A worsening in ignition behavior was observed when steam was added to the oxy-fuel combustion atmospheres, although an increase in the steam concentration from 10 to 20% did not produce any significant difference in the ignition characteristics of the fuels.This work was carried out with financial support from the Spanish MICINN (Project PS-120000-2005-2) co-financed by the European Regional Development Fund. L.A. and M.V.G. acknowledge funding from the CSIC JAE programs, co-financed by the European Social Fund. J.R. acknowledges funding from the Government of the Principado de Asturias (Severo Ochoa program), respectively. Support from the CSIC (PIE 201080E09) is gratefully acknowledged.Peer reviewedWiley-VCHConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201520152013info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/112316reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1002/ghg.1368Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1123162026-05-22T06:33:51Z
dc.title.none.fl_str_mv Ignition behavior of coal and biomass blends under oxy-firing conditions with steam additions
title Ignition behavior of coal and biomass blends under oxy-firing conditions with steam additions
spellingShingle Ignition behavior of coal and biomass blends under oxy-firing conditions with steam additions
Riaza Benito, Juan
Biomass
Coal
Ignition behavior
Oxy-combustion
Steam
title_short Ignition behavior of coal and biomass blends under oxy-firing conditions with steam additions
title_full Ignition behavior of coal and biomass blends under oxy-firing conditions with steam additions
title_fullStr Ignition behavior of coal and biomass blends under oxy-firing conditions with steam additions
title_full_unstemmed Ignition behavior of coal and biomass blends under oxy-firing conditions with steam additions
title_sort Ignition behavior of coal and biomass blends under oxy-firing conditions with steam additions
dc.creator.none.fl_str_mv Riaza Benito, Juan
Álvarez González, Lucía
Gil Matellanes, María Victoria
Khatami, Reza
Levendis, Yiannis A.
Pis Martínez, José Juan
Pevida García, Covadonga
Rubiera González, Fernando
author Riaza Benito, Juan
author_facet Riaza Benito, Juan
Álvarez González, Lucía
Gil Matellanes, María Victoria
Khatami, Reza
Levendis, Yiannis A.
Pis Martínez, José Juan
Pevida García, Covadonga
Rubiera González, Fernando
author_role author
author2 Álvarez González, Lucía
Gil Matellanes, María Victoria
Khatami, Reza
Levendis, Yiannis A.
Pis Martínez, José Juan
Pevida García, Covadonga
Rubiera González, Fernando
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Biomass
Coal
Ignition behavior
Oxy-combustion
Steam
topic Biomass
Coal
Ignition behavior
Oxy-combustion
Steam
description The ignition behavior of coal and biomass blends was assessed in air and oxy-firing conditions in an entrained flow reactor. Four coals of different rank, an anthracite, a semi-anthracite, and two high-volatile bituminous coals, were tested in air and O2/CO2 (21–35% O2) environments. For all the coals, deterioration in ignition properties was observed in the 21%O2/79%CO2 atmosphere in comparison with air. However, the ignition properties were enhanced when the oxygen concentration in the O2/CO2 mixture was increased. Coal and biomass blends of a semi-anthracite and a high-volatile bituminous coal with 10 and 20 wt% of olive residue were also used in the ignition experiments under air and oxy-firing conditions. The ignition behavior of the coals improved as the additions of biomass increased both in air and oxy-firing conditions. In particular, the effect of biomass blending was more noticeable in the ignition of the high rank coal. Since industrial oxy-coal combustion with a wet recycle would result in higher concentrations of H2O(v), the effect of steam addition on ignition behavior was also studied. A worsening in ignition behavior was observed when steam was added to the oxy-fuel combustion atmospheres, although an increase in the steam concentration from 10 to 20% did not produce any significant difference in the ignition characteristics of the fuels.
publishDate 2013
dc.date.none.fl_str_mv 2013
2015
2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/112316
url http://hdl.handle.net/10261/112316
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1002/ghg.1368
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Wiley-VCH
publisher.none.fl_str_mv Wiley-VCH
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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