Oxy-fuel combustion of coal and biomass blends

The ignition temperature, burnout and NO emissions of blends of a semi-anthracite and a high-volatile bituminous coal with 10 and 20 wt.% of olive waste were studied under oxy-fuel combustion conditions in an entrained flow reactor (EFR). The results obtained under several oxy-fuel atmospheres (21%O...

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Autores: Riaza Benito, Juan, Gil Matellanes, María Victoria, Álvarez González, Lucía, Pevida García, Covadonga, Pis Martínez, José Juan, Rubiera González, Fernando
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2012
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/103907
Acceso en línea:http://hdl.handle.net/10261/103907
Access Level:acceso abierto
Palabra clave:Coal
Biomass
Oxy-fuel combustion
Ignition
Burnout
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spelling Oxy-fuel combustion of coal and biomass blendsRiaza Benito, JuanGil Matellanes, María VictoriaÁlvarez González, LucíaPevida García, CovadongaPis Martínez, José JuanRubiera González, FernandoCoalBiomassOxy-fuel combustionIgnitionBurnoutThe ignition temperature, burnout and NO emissions of blends of a semi-anthracite and a high-volatile bituminous coal with 10 and 20 wt.% of olive waste were studied under oxy-fuel combustion conditions in an entrained flow reactor (EFR). The results obtained under several oxy-fuel atmospheres (21%O2–79%CO2, 30%O2–70%CO2 and 35%O2–65%CO2) were compared with those attained in air. The results indicated that replacing N2 by CO2 in the combustion atmosphere with 21% of O2 caused an increase in the temperature of ignition and a decrease in the burnout value. When the O2 concentration was increased to 30 and 35%, the temperature of ignition was lower and the burnout value was higher than in air conditions. A significant reduction in ignition temperature and a slight increase in the burnout value was observed after the addition of biomass, this trend becoming more noticeable as the biomass concentration was increased. The emissions of NO during oxy-fuel combustion were lower than under air-firing. However, they remained similar under all the oxy-fuel atmospheres with increasing O2 concentrations. Emissions of NO were significantly reduced by the addition of biomass to the bituminous coal, although this effect was less noticeable in the case of the semi-anthracite.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. M.V.G. and L.A. acknowledge funding from the CSIC JAE-Doc and CSIC JAE-Pre programs, respectively, co-financed by the European Social Fund. J.R. acknowledges funding from the Government of the Principado de Asturias (Severo Ochoa program).Peer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201420142012info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/103907reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.energy.2012.02.057Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1039072026-05-22T06:33:51Z
dc.title.none.fl_str_mv Oxy-fuel combustion of coal and biomass blends
title Oxy-fuel combustion of coal and biomass blends
spellingShingle Oxy-fuel combustion of coal and biomass blends
Riaza Benito, Juan
Coal
Biomass
Oxy-fuel combustion
Ignition
Burnout
title_short Oxy-fuel combustion of coal and biomass blends
title_full Oxy-fuel combustion of coal and biomass blends
title_fullStr Oxy-fuel combustion of coal and biomass blends
title_full_unstemmed Oxy-fuel combustion of coal and biomass blends
title_sort Oxy-fuel combustion of coal and biomass blends
dc.creator.none.fl_str_mv Riaza Benito, Juan
Gil Matellanes, María Victoria
Álvarez González, Lucía
Pevida García, Covadonga
Pis Martínez, José Juan
Rubiera González, Fernando
author Riaza Benito, Juan
author_facet Riaza Benito, Juan
Gil Matellanes, María Victoria
Álvarez González, Lucía
Pevida García, Covadonga
Pis Martínez, José Juan
Rubiera González, Fernando
author_role author
author2 Gil Matellanes, María Victoria
Álvarez González, Lucía
Pevida García, Covadonga
Pis Martínez, José Juan
Rubiera González, Fernando
author2_role 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 Coal
Biomass
Oxy-fuel combustion
Ignition
Burnout
topic Coal
Biomass
Oxy-fuel combustion
Ignition
Burnout
description The ignition temperature, burnout and NO emissions of blends of a semi-anthracite and a high-volatile bituminous coal with 10 and 20 wt.% of olive waste were studied under oxy-fuel combustion conditions in an entrained flow reactor (EFR). The results obtained under several oxy-fuel atmospheres (21%O2–79%CO2, 30%O2–70%CO2 and 35%O2–65%CO2) were compared with those attained in air. The results indicated that replacing N2 by CO2 in the combustion atmosphere with 21% of O2 caused an increase in the temperature of ignition and a decrease in the burnout value. When the O2 concentration was increased to 30 and 35%, the temperature of ignition was lower and the burnout value was higher than in air conditions. A significant reduction in ignition temperature and a slight increase in the burnout value was observed after the addition of biomass, this trend becoming more noticeable as the biomass concentration was increased. The emissions of NO during oxy-fuel combustion were lower than under air-firing. However, they remained similar under all the oxy-fuel atmospheres with increasing O2 concentrations. Emissions of NO were significantly reduced by the addition of biomass to the bituminous coal, although this effect was less noticeable in the case of the semi-anthracite.
publishDate 2012
dc.date.none.fl_str_mv 2012
2014
2014
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/10261/103907
url http://hdl.handle.net/10261/103907
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.energy.2012.02.057
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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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