Ignition behaviour of different rank coals in an entrained flow reactor

An experimental study to determine the temperature and mechanism of coal ignition was carried out by using an entrained flow reactor (EFR) at relatively high coal feed rates (0.5 g min−1). Seven coals ranging in rank from subbituminous to semianthracite, were tested and the evolved gases (O2, CO, CO...

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Detalhes bibliográficos
Autores: Faúndez, J., Arenillas de la Puente, Ana, Rubiera González, Fernando, García, X., Gordon, A.L., Pis Martínez, José Juan
Tipo de documento: artigo
Estado:Versión aceptada para publicación
Data de publicação:2005
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/103143
Acesso em linha:http://hdl.handle.net/10261/103143
Access Level:Acceso aberto
Palavra-chave:Ignition
Coal
Entrained flow reactor
SEM
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spelling Ignition behaviour of different rank coals in an entrained flow reactorFaúndez, J.Arenillas de la Puente, AnaRubiera González, FernandoGarcía, X.Gordon, A.L.Pis Martínez, José JuanIgnitionCoalEntrained flow reactorSEMAn experimental study to determine the temperature and mechanism of coal ignition was carried out by using an entrained flow reactor (EFR) at relatively high coal feed rates (0.5 g min−1). Seven coals ranging in rank from subbituminous to semianthracite, were tested and the evolved gases (O2, CO, CO2, NO) were measured continuously. The ignition temperature was evaluated from the gas evolution profiles, and it was found to be inversely correlated to the reactivity of the coal, as reflected by the increasing values of the ignition temperature in the sequence: subbituminous, high volatile bituminous, low volatile bituminous and semianthracite coals. The mechanism of ignition varied from a heterogeneous mechanism for subbituminous, low volatile bituminous and semianthracite coals, to a homogeneous mechanism for high volatile bituminous coals. A thermogravimetric analyser (TGA) was also used to evaluate coal ignition behaviour. Both methods, TGA and EFR, were in agreement as regards the mechanism of coal ignition. From the SEM micrographs of the coal particles retrieved from the cyclone, it was possible to observe the external appearance of the particles before, during and after ignition. The micrographs confirmed the mechanism deduced from the gas profiles.Work carried out with the financial support of FONDECYT, Project 2010113 and MECESUP UCO0108 (Chile) which provided a mobility grant.Peer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201420142005info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/103143reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.fuel.2005.03.028Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1031432026-05-22T06:33:51Z
dc.title.none.fl_str_mv Ignition behaviour of different rank coals in an entrained flow reactor
title Ignition behaviour of different rank coals in an entrained flow reactor
spellingShingle Ignition behaviour of different rank coals in an entrained flow reactor
Faúndez, J.
Ignition
Coal
Entrained flow reactor
SEM
title_short Ignition behaviour of different rank coals in an entrained flow reactor
title_full Ignition behaviour of different rank coals in an entrained flow reactor
title_fullStr Ignition behaviour of different rank coals in an entrained flow reactor
title_full_unstemmed Ignition behaviour of different rank coals in an entrained flow reactor
title_sort Ignition behaviour of different rank coals in an entrained flow reactor
dc.creator.none.fl_str_mv Faúndez, J.
Arenillas de la Puente, Ana
Rubiera González, Fernando
García, X.
Gordon, A.L.
Pis Martínez, José Juan
author Faúndez, J.
author_facet Faúndez, J.
Arenillas de la Puente, Ana
Rubiera González, Fernando
García, X.
Gordon, A.L.
Pis Martínez, José Juan
author_role author
author2 Arenillas de la Puente, Ana
Rubiera González, Fernando
García, X.
Gordon, A.L.
Pis Martínez, José Juan
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 Ignition
Coal
Entrained flow reactor
SEM
topic Ignition
Coal
Entrained flow reactor
SEM
description An experimental study to determine the temperature and mechanism of coal ignition was carried out by using an entrained flow reactor (EFR) at relatively high coal feed rates (0.5 g min−1). Seven coals ranging in rank from subbituminous to semianthracite, were tested and the evolved gases (O2, CO, CO2, NO) were measured continuously. The ignition temperature was evaluated from the gas evolution profiles, and it was found to be inversely correlated to the reactivity of the coal, as reflected by the increasing values of the ignition temperature in the sequence: subbituminous, high volatile bituminous, low volatile bituminous and semianthracite coals. The mechanism of ignition varied from a heterogeneous mechanism for subbituminous, low volatile bituminous and semianthracite coals, to a homogeneous mechanism for high volatile bituminous coals. A thermogravimetric analyser (TGA) was also used to evaluate coal ignition behaviour. Both methods, TGA and EFR, were in agreement as regards the mechanism of coal ignition. From the SEM micrographs of the coal particles retrieved from the cyclone, it was possible to observe the external appearance of the particles before, during and after ignition. The micrographs confirmed the mechanism deduced from the gas profiles.
publishDate 2005
dc.date.none.fl_str_mv 2005
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/10261/103143
url http://hdl.handle.net/10261/103143
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.fuel.2005.03.028
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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score 15,811543

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