A thermogravimetric analysis of the combustion of a Brazilian mineral coal

Detalhes bibliográficos
Autor(a) principal: Silva Filho,Claudionor Gomes da
Data de Publicação: 2008
Outros Autores: Milioli,Fernando Eduardo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000100021
Resumo: Knowledge of coal combustion kinetics is crucial for burner design. This work aims to contribute on this issue by determining the kinetics of a particular Brazilian bituminous coal. Non-isothermal thermogravimetry was applied for determining both the pre-exponential factor and the activation energy. Coal samples of 10 mg and 775 mm mean size were used in synthetic air atmospheres (21 % O2). Heating rates from 10 to 50 ºC/min were applied until the temperature reached 850 ºC, which was kept constant until burnout. The activation energy for the primary and the secondary combustion resulted, respectively, in 135.1 kJ/mol and 85.1 kJ/mol.
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spelling A thermogravimetric analysis of the combustion of a Brazilian mineral coalcoalcombustionkineticsKnowledge of coal combustion kinetics is crucial for burner design. This work aims to contribute on this issue by determining the kinetics of a particular Brazilian bituminous coal. Non-isothermal thermogravimetry was applied for determining both the pre-exponential factor and the activation energy. Coal samples of 10 mg and 775 mm mean size were used in synthetic air atmospheres (21 % O2). Heating rates from 10 to 50 ºC/min were applied until the temperature reached 850 ºC, which was kept constant until burnout. The activation energy for the primary and the secondary combustion resulted, respectively, in 135.1 kJ/mol and 85.1 kJ/mol.Sociedade Brasileira de Química2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000100021Química Nova v.31 n.1 2008reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422008000100021info:eu-repo/semantics/openAccessSilva Filho,Claudionor Gomes daMilioli,Fernando Eduardoeng2008-02-25T00:00:00Zoai:scielo:S0100-40422008000100021Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2008-02-25T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv A thermogravimetric analysis of the combustion of a Brazilian mineral coal
title A thermogravimetric analysis of the combustion of a Brazilian mineral coal
spellingShingle A thermogravimetric analysis of the combustion of a Brazilian mineral coal
Silva Filho,Claudionor Gomes da
coal
combustion
kinetics
title_short A thermogravimetric analysis of the combustion of a Brazilian mineral coal
title_full A thermogravimetric analysis of the combustion of a Brazilian mineral coal
title_fullStr A thermogravimetric analysis of the combustion of a Brazilian mineral coal
title_full_unstemmed A thermogravimetric analysis of the combustion of a Brazilian mineral coal
title_sort A thermogravimetric analysis of the combustion of a Brazilian mineral coal
author Silva Filho,Claudionor Gomes da
author_facet Silva Filho,Claudionor Gomes da
Milioli,Fernando Eduardo
author_role author
author2 Milioli,Fernando Eduardo
author2_role author
dc.contributor.author.fl_str_mv Silva Filho,Claudionor Gomes da
Milioli,Fernando Eduardo
dc.subject.por.fl_str_mv coal
combustion
kinetics
topic coal
combustion
kinetics
description Knowledge of coal combustion kinetics is crucial for burner design. This work aims to contribute on this issue by determining the kinetics of a particular Brazilian bituminous coal. Non-isothermal thermogravimetry was applied for determining both the pre-exponential factor and the activation energy. Coal samples of 10 mg and 775 mm mean size were used in synthetic air atmospheres (21 % O2). Heating rates from 10 to 50 ºC/min were applied until the temperature reached 850 ºC, which was kept constant until burnout. The activation energy for the primary and the secondary combustion resulted, respectively, in 135.1 kJ/mol and 85.1 kJ/mol.
publishDate 2008
dc.date.none.fl_str_mv 2008-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000100021
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000100021
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-40422008000100021
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.31 n.1 2008
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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