Coal structure and reactivity changes induced by chemical demineralisation

The aim of this work was to determine the influence that an advanced demineralisation procedure has on the combustion characteristics of coal. A high-volatile bituminous coal with 6.2% ash content was treated in a mixture of hydrofluoric and fluorosilicic acids (HF/H2SiF6). Nitric acid was used eith...

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Detalles Bibliográficos
Autores: Rubiera González, Fernando, Arenillas de la Puente, Ana, Pevida García, Covadonga, García Fernández, Roberto, Pis Martínez, José Juan, Steel, K.M., Patrick, J.W.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2002
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/103159
Acceso en línea:http://hdl.handle.net/10261/103159
Access Level:acceso abierto
Palabra clave:Coal demineralisation
Reactivity
TGA-MS
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spelling Coal structure and reactivity changes induced by chemical demineralisationRubiera González, FernandoArenillas de la Puente, AnaPevida García, CovadongaGarcía Fernández, RobertoPis Martínez, José JuanSteel, K.M.Patrick, J.W.Coal demineralisationReactivityTGA-MSThe aim of this work was to determine the influence that an advanced demineralisation procedure has on the combustion characteristics of coal. A high-volatile bituminous coal with 6.2% ash content was treated in a mixture of hydrofluoric and fluorosilicic acids (HF/H2SiF6). Nitric acid was used either as a pretreatment, or as a washing stage after HF/H2SiF6 demineralisation, with an ash content as low as 0.3% being attained in the latter case. The structural changes produced by the chemical treatment were evaluated by comparison of the FTIR spectra of the raw and treated coal samples. The devolatilisation and combustibility behaviour of the samples was studied by using a thermobalance coupled to a mass spectrometer (TGA-MS) for evolved gas analysis. The combustibility characteristics of the cleaned samples were clearly improved, there being a decrease in SO2 emissions.Work carried out with a financial grant from the European Coal and Steel Community (Project 7220-EA-017).Peer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201420142002info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/103159reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/S0378-3820(02)00185-6Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1031592026-05-22T06:33:51Z
dc.title.none.fl_str_mv Coal structure and reactivity changes induced by chemical demineralisation
title Coal structure and reactivity changes induced by chemical demineralisation
spellingShingle Coal structure and reactivity changes induced by chemical demineralisation
Rubiera González, Fernando
Coal demineralisation
Reactivity
TGA-MS
title_short Coal structure and reactivity changes induced by chemical demineralisation
title_full Coal structure and reactivity changes induced by chemical demineralisation
title_fullStr Coal structure and reactivity changes induced by chemical demineralisation
title_full_unstemmed Coal structure and reactivity changes induced by chemical demineralisation
title_sort Coal structure and reactivity changes induced by chemical demineralisation
dc.creator.none.fl_str_mv Rubiera González, Fernando
Arenillas de la Puente, Ana
Pevida García, Covadonga
García Fernández, Roberto
Pis Martínez, José Juan
Steel, K.M.
Patrick, J.W.
author Rubiera González, Fernando
author_facet Rubiera González, Fernando
Arenillas de la Puente, Ana
Pevida García, Covadonga
García Fernández, Roberto
Pis Martínez, José Juan
Steel, K.M.
Patrick, J.W.
author_role author
author2 Arenillas de la Puente, Ana
Pevida García, Covadonga
García Fernández, Roberto
Pis Martínez, José Juan
Steel, K.M.
Patrick, J.W.
author2_role 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 Coal demineralisation
Reactivity
TGA-MS
topic Coal demineralisation
Reactivity
TGA-MS
description The aim of this work was to determine the influence that an advanced demineralisation procedure has on the combustion characteristics of coal. A high-volatile bituminous coal with 6.2% ash content was treated in a mixture of hydrofluoric and fluorosilicic acids (HF/H2SiF6). Nitric acid was used either as a pretreatment, or as a washing stage after HF/H2SiF6 demineralisation, with an ash content as low as 0.3% being attained in the latter case. The structural changes produced by the chemical treatment were evaluated by comparison of the FTIR spectra of the raw and treated coal samples. The devolatilisation and combustibility behaviour of the samples was studied by using a thermobalance coupled to a mass spectrometer (TGA-MS) for evolved gas analysis. The combustibility characteristics of the cleaned samples were clearly improved, there being a decrease in SO2 emissions.
publishDate 2002
dc.date.none.fl_str_mv 2002
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/10261/103159
url http://hdl.handle.net/10261/103159
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/S0378-3820(02)00185-6
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 15,812455

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