Quality and energetic evaluation of the charcoal made of babassu nut residues used in the steel industry

Detalhes bibliográficos
Autor(a) principal: Protásio, Thiago de Paula
Data de Publicação: 2014
Outros Autores: Trugilho, Paulo Fernando, Mirmehdi, Seyedmohammad, Silva, Marcela Gomes da
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/46034
Resumo: Brazil is the only country in the world that uses large scale charcoal in steel-making blast furnaces. Meantime, the monoculture plantations of Eucalyptus are not able to meet the demand for charcoal from the steel industries.Therefore, research is necessary, in order to use lignocellulosic residues for the production of charcoal with technological properties which are suitable for the reduction of iron ore. Given the above, the objective of this study was to evaluate the quality of charcoal which was made with babassu nut shell and designed for utilization in the steel industry in the function of the final carbonization temperature. All three layers of babassu nut shell (epicarp, mesocarp and endocarp) were used together. The initial temperature of the test was 100ºC and the final temperatures were: 450ºC, 550ºC, 650ºC, 750ºC and 850ºC. For the charcoals produced, the following properties were determined: apparent relative density, energy density and fixed carbon stock, in addition to chemical compositions (immediate and elemental) and heating values (higher and lower). Charcoal made of babassu nut shell showed high values of apparent density and energy density, and has a potential to replace coal and wood charcoal in the steel industry. The effect of the final carbonization temperature was expressed for all characteristics evaluated, except for the nitrogen content. Babassu nut shell must be carbonized at temperatures higher than 550ºC, so that the charcoal produced can be used in steel-making blast furnaces.
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spelling Quality and energetic evaluation of the charcoal made of babassu nut residues used in the steel industryQualidade e avaliação energética do carvão vegetal dos resíduos do coco babaçu para uso siderúrgicoAlternative biomassRenewable energyBio-reducerCarbonizationBiomassa alternativaEnergia renovávelBiorredutorCarbonizaçãoBrazil is the only country in the world that uses large scale charcoal in steel-making blast furnaces. Meantime, the monoculture plantations of Eucalyptus are not able to meet the demand for charcoal from the steel industries.Therefore, research is necessary, in order to use lignocellulosic residues for the production of charcoal with technological properties which are suitable for the reduction of iron ore. Given the above, the objective of this study was to evaluate the quality of charcoal which was made with babassu nut shell and designed for utilization in the steel industry in the function of the final carbonization temperature. All three layers of babassu nut shell (epicarp, mesocarp and endocarp) were used together. The initial temperature of the test was 100ºC and the final temperatures were: 450ºC, 550ºC, 650ºC, 750ºC and 850ºC. For the charcoals produced, the following properties were determined: apparent relative density, energy density and fixed carbon stock, in addition to chemical compositions (immediate and elemental) and heating values (higher and lower). Charcoal made of babassu nut shell showed high values of apparent density and energy density, and has a potential to replace coal and wood charcoal in the steel industry. The effect of the final carbonization temperature was expressed for all characteristics evaluated, except for the nitrogen content. Babassu nut shell must be carbonized at temperatures higher than 550ºC, so that the charcoal produced can be used in steel-making blast furnaces.O Brasil é o único país no mundo que utiliza, em grande escala, o carvão vegetal nos altos fornos siderúrgicos. Contudo, os plantios homogêneos de Eucalyptus não são capazes de suprir a demanda de carvão vegetal das siderúrgicas. Por isso, são necessárias pesquisas visando ao aproveitamento de resíduos lignocelulósicos, para a produção de carvão vegetal com propriedades tecnológicas adequadas à redução do minério de ferro. Dessa forma,objetivou-se, neste trabalho, avaliar a qualidade do carvão vegetal da casca do coco babaçu, destinado ao uso siderúrgico, em função da temperatura final de carbonização. Foram utilizadas, conjuntamente, as três camadas constituintes da casca do coco babaçu (epicarpo, mesocarpo e endocarpo). A temperatura inicial do ensaio foi de 100ºC e as temperaturas finais foram de 450ºC, 550ºC, 650ºC, 750ºC e 850ºC. Para os carvões produzidos, foram determinadas as seguintes propriedades: densidade relativa aparente, densidades energéticas e estoque de carbono fixo, além das composições químicas (imediata e elementar) e os poderes caloríficos (superior e inferior). O carvão vegetal da casca do coco babaçu apresentou elevados valores de densidade aparente e de densidade energética e é passível de substituir o carvão mineral e o carvão vegetal de madeira na siderurgia. O efeito da temperatura final de carbonização foi pronunciado para todas as características avaliadas, com exceção do teor de nitrogênio. A casca do coco babaçu deve ser carbonizada em temperaturas superiores a 550ºC, para que o carvão vegetal produzido possa ser utilizado nos altos fornos siderúrgicos.Editora UFLA (Editora da Universidade Federal de Lavras)2021-01-18T22:45:59Z2021-01-18T22:45:59Z2014-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfPROTÁSIO, T. de P. et al. Quality and energetic evaluation of the charcoal made of babassu nut residues used in the steel industry. Ciência e Agrotecnologia, Lavras, v. 38, n. 5, p. 435-444, set./out. 2014. DOI: 10.1590/S1413-70542014000500003.http://repositorio.ufla.br/jspui/handle/1/46034Ciência e Agrotecnologiareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessProtásio, Thiago de PaulaTrugilho, Paulo FernandoMirmehdi, SeyedmohammadSilva, Marcela Gomes daeng2021-01-18T22:45:59Zoai:localhost:1/46034Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2021-01-18T22:45:59Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Quality and energetic evaluation of the charcoal made of babassu nut residues used in the steel industry
Qualidade e avaliação energética do carvão vegetal dos resíduos do coco babaçu para uso siderúrgico
title Quality and energetic evaluation of the charcoal made of babassu nut residues used in the steel industry
spellingShingle Quality and energetic evaluation of the charcoal made of babassu nut residues used in the steel industry
Protásio, Thiago de Paula
Alternative biomass
Renewable energy
Bio-reducer
Carbonization
Biomassa alternativa
Energia renovável
Biorredutor
Carbonização
title_short Quality and energetic evaluation of the charcoal made of babassu nut residues used in the steel industry
title_full Quality and energetic evaluation of the charcoal made of babassu nut residues used in the steel industry
title_fullStr Quality and energetic evaluation of the charcoal made of babassu nut residues used in the steel industry
title_full_unstemmed Quality and energetic evaluation of the charcoal made of babassu nut residues used in the steel industry
title_sort Quality and energetic evaluation of the charcoal made of babassu nut residues used in the steel industry
author Protásio, Thiago de Paula
author_facet Protásio, Thiago de Paula
Trugilho, Paulo Fernando
Mirmehdi, Seyedmohammad
Silva, Marcela Gomes da
author_role author
author2 Trugilho, Paulo Fernando
Mirmehdi, Seyedmohammad
Silva, Marcela Gomes da
author2_role author
author
author
dc.contributor.author.fl_str_mv Protásio, Thiago de Paula
Trugilho, Paulo Fernando
Mirmehdi, Seyedmohammad
Silva, Marcela Gomes da
dc.subject.por.fl_str_mv Alternative biomass
Renewable energy
Bio-reducer
Carbonization
Biomassa alternativa
Energia renovável
Biorredutor
Carbonização
topic Alternative biomass
Renewable energy
Bio-reducer
Carbonization
Biomassa alternativa
Energia renovável
Biorredutor
Carbonização
description Brazil is the only country in the world that uses large scale charcoal in steel-making blast furnaces. Meantime, the monoculture plantations of Eucalyptus are not able to meet the demand for charcoal from the steel industries.Therefore, research is necessary, in order to use lignocellulosic residues for the production of charcoal with technological properties which are suitable for the reduction of iron ore. Given the above, the objective of this study was to evaluate the quality of charcoal which was made with babassu nut shell and designed for utilization in the steel industry in the function of the final carbonization temperature. All three layers of babassu nut shell (epicarp, mesocarp and endocarp) were used together. The initial temperature of the test was 100ºC and the final temperatures were: 450ºC, 550ºC, 650ºC, 750ºC and 850ºC. For the charcoals produced, the following properties were determined: apparent relative density, energy density and fixed carbon stock, in addition to chemical compositions (immediate and elemental) and heating values (higher and lower). Charcoal made of babassu nut shell showed high values of apparent density and energy density, and has a potential to replace coal and wood charcoal in the steel industry. The effect of the final carbonization temperature was expressed for all characteristics evaluated, except for the nitrogen content. Babassu nut shell must be carbonized at temperatures higher than 550ºC, so that the charcoal produced can be used in steel-making blast furnaces.
publishDate 2014
dc.date.none.fl_str_mv 2014-10
2021-01-18T22:45:59Z
2021-01-18T22:45:59Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv PROTÁSIO, T. de P. et al. Quality and energetic evaluation of the charcoal made of babassu nut residues used in the steel industry. Ciência e Agrotecnologia, Lavras, v. 38, n. 5, p. 435-444, set./out. 2014. DOI: 10.1590/S1413-70542014000500003.
http://repositorio.ufla.br/jspui/handle/1/46034
identifier_str_mv PROTÁSIO, T. de P. et al. Quality and energetic evaluation of the charcoal made of babassu nut residues used in the steel industry. Ciência e Agrotecnologia, Lavras, v. 38, n. 5, p. 435-444, set./out. 2014. DOI: 10.1590/S1413-70542014000500003.
url http://repositorio.ufla.br/jspui/handle/1/46034
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Editora UFLA (Editora da Universidade Federal de Lavras)
publisher.none.fl_str_mv Editora UFLA (Editora da Universidade Federal de Lavras)
dc.source.none.fl_str_mv Ciência e Agrotecnologia
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
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