Chemical properties of pellets of Pinus sp. torrefied in a screw type reactor

Detalhes bibliográficos
Autor(a) principal: Magalhães, Mateus Alves de
Data de Publicação: 2018
Outros Autores: Carneiro, Angélica de Cássia Oliveira, Vital, Benedito Rocha, Silva, Carlos Miguel Simões da, Costa, Emylle Veloso Santos, Trugilho, Paulo Fernando
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/34632
Resumo: The combination of pelletization and torrefaction allows for obtaining pellets with higher energetic density. Thus, biomass becomes more attractive and usable for energetic purposes, and therefore, knowing the chemical properties becomes important to guarantee the quality of the torrefied pellets for fuel. The objective of this study was to evaluate the effect of torrefaction of Pinus sp. pellets on their chemical properties. The wood was previously transformed into particles and dried to 16% moisture content for further pelleting. For the torrefaction, the pellets were dried to 0% moisture content and subjected to heat treatment in a screw type reactor at the temperatures of 210, 250, and 290 °C and the times of 10, 20, and 30 minutes. In order to determine the chemical properties, the structural chemical composition, immediate chemical composition, elemental composition, and thermogravimetric analysis were performed. The torrefaction promoted significant changes in the chemical properties of Pinus sp. pellets, especially regarding the proportional increase of carbon content in detriment to oxygen reduction, increase of the thermal stability, and proportional increase of the lignin content by the reduction of the hemicelluloses. This improves the energetic quality of the biomass and turns it into a more competitive fuel when compared to fossil fuels. Keywords: Torrefaction, densification, energetics biomass.
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spelling Chemical properties of pellets of Pinus sp. torrefied in a screw type reactorPropriedades químicas de pellets de Pinus sp. torrificados em reator tipo rosca sem fimTorrefactionEnergetics biomassTorrefaçãoBiomassa energéticaThe combination of pelletization and torrefaction allows for obtaining pellets with higher energetic density. Thus, biomass becomes more attractive and usable for energetic purposes, and therefore, knowing the chemical properties becomes important to guarantee the quality of the torrefied pellets for fuel. The objective of this study was to evaluate the effect of torrefaction of Pinus sp. pellets on their chemical properties. The wood was previously transformed into particles and dried to 16% moisture content for further pelleting. For the torrefaction, the pellets were dried to 0% moisture content and subjected to heat treatment in a screw type reactor at the temperatures of 210, 250, and 290 °C and the times of 10, 20, and 30 minutes. In order to determine the chemical properties, the structural chemical composition, immediate chemical composition, elemental composition, and thermogravimetric analysis were performed. The torrefaction promoted significant changes in the chemical properties of Pinus sp. pellets, especially regarding the proportional increase of carbon content in detriment to oxygen reduction, increase of the thermal stability, and proportional increase of the lignin content by the reduction of the hemicelluloses. This improves the energetic quality of the biomass and turns it into a more competitive fuel when compared to fossil fuels. Keywords: Torrefaction, densification, energetics biomass.tornando assim a biomassa mais atrativa e utilizável para fins energéticos. Sendo assim, torna-se importante o conhecimento de suas propriedades químicas a fim de garantir a qualidade dos pellets torrificados como combustível. O objetivo deste estudo foi avaliar o efeito da torrefação de pellets de Pinus sp. em suas propriedades químicas. A madeira foi previamente transformada em partículas e seca a 16% de umidade para posterior peletização. Para a torrefação, os pellets foram secos a 0% de umidade e submetidos a tratamento térmico em um reator tipo rosca sem fim, nas temperaturas de 210, 250 e 290 °C e nos tempos de residência de 10, 20 e 30 minutos. Para o conhecimento das propriedades químicas, foi determinada a composição química estrutural, composição química imediata, composição elementar e análise termogravimétrica. A torrefação promoveu alterações significativas nas propriedades químicas dos pellets de Pinus sp., destacando-se o aumento proporcional do conteúdo de carbono em detrimento da redução de oxigênio, aumento da estabilidade térmica e aumento proporcional do conteúdo de lignina pela redução, principalmente, das hemiceluloses, o que melhora a qualidade energética da biomassa e a torna mais competitiva frente aos combustíveis fosseis.Universidade Federal do Paraná2019-06-05T17:34:21Z2019-06-05T17:34:21Z2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfMAGALHÃES, M. A. de et al. Chemical properties of pellets of Pinus sp. torrefied in a screw type reactor. Floresta, Curitiba, v. 48, n. 4, p. 493-502, out./dez. 2018.http://repositorio.ufla.br/jspui/handle/1/34632Florestareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessMagalhães, Mateus Alves deCarneiro, Angélica de Cássia OliveiraVital, Benedito RochaSilva, Carlos Miguel Simões daCosta, Emylle Veloso SantosTrugilho, Paulo Fernandoeng2019-06-05T17:34:22Zoai:localhost:1/34632Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2019-06-05T17:34:22Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Chemical properties of pellets of Pinus sp. torrefied in a screw type reactor
Propriedades químicas de pellets de Pinus sp. torrificados em reator tipo rosca sem fim
title Chemical properties of pellets of Pinus sp. torrefied in a screw type reactor
spellingShingle Chemical properties of pellets of Pinus sp. torrefied in a screw type reactor
Magalhães, Mateus Alves de
Torrefaction
Energetics biomass
Torrefação
Biomassa energética
title_short Chemical properties of pellets of Pinus sp. torrefied in a screw type reactor
title_full Chemical properties of pellets of Pinus sp. torrefied in a screw type reactor
title_fullStr Chemical properties of pellets of Pinus sp. torrefied in a screw type reactor
title_full_unstemmed Chemical properties of pellets of Pinus sp. torrefied in a screw type reactor
title_sort Chemical properties of pellets of Pinus sp. torrefied in a screw type reactor
author Magalhães, Mateus Alves de
author_facet Magalhães, Mateus Alves de
Carneiro, Angélica de Cássia Oliveira
Vital, Benedito Rocha
Silva, Carlos Miguel Simões da
Costa, Emylle Veloso Santos
Trugilho, Paulo Fernando
author_role author
author2 Carneiro, Angélica de Cássia Oliveira
Vital, Benedito Rocha
Silva, Carlos Miguel Simões da
Costa, Emylle Veloso Santos
Trugilho, Paulo Fernando
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Magalhães, Mateus Alves de
Carneiro, Angélica de Cássia Oliveira
Vital, Benedito Rocha
Silva, Carlos Miguel Simões da
Costa, Emylle Veloso Santos
Trugilho, Paulo Fernando
dc.subject.por.fl_str_mv Torrefaction
Energetics biomass
Torrefação
Biomassa energética
topic Torrefaction
Energetics biomass
Torrefação
Biomassa energética
description The combination of pelletization and torrefaction allows for obtaining pellets with higher energetic density. Thus, biomass becomes more attractive and usable for energetic purposes, and therefore, knowing the chemical properties becomes important to guarantee the quality of the torrefied pellets for fuel. The objective of this study was to evaluate the effect of torrefaction of Pinus sp. pellets on their chemical properties. The wood was previously transformed into particles and dried to 16% moisture content for further pelleting. For the torrefaction, the pellets were dried to 0% moisture content and subjected to heat treatment in a screw type reactor at the temperatures of 210, 250, and 290 °C and the times of 10, 20, and 30 minutes. In order to determine the chemical properties, the structural chemical composition, immediate chemical composition, elemental composition, and thermogravimetric analysis were performed. The torrefaction promoted significant changes in the chemical properties of Pinus sp. pellets, especially regarding the proportional increase of carbon content in detriment to oxygen reduction, increase of the thermal stability, and proportional increase of the lignin content by the reduction of the hemicelluloses. This improves the energetic quality of the biomass and turns it into a more competitive fuel when compared to fossil fuels. Keywords: Torrefaction, densification, energetics biomass.
publishDate 2018
dc.date.none.fl_str_mv 2018
2019-06-05T17:34:21Z
2019-06-05T17:34:21Z
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 MAGALHÃES, M. A. de et al. Chemical properties of pellets of Pinus sp. torrefied in a screw type reactor. Floresta, Curitiba, v. 48, n. 4, p. 493-502, out./dez. 2018.
http://repositorio.ufla.br/jspui/handle/1/34632
identifier_str_mv MAGALHÃES, M. A. de et al. Chemical properties of pellets of Pinus sp. torrefied in a screw type reactor. Floresta, Curitiba, v. 48, n. 4, p. 493-502, out./dez. 2018.
url http://repositorio.ufla.br/jspui/handle/1/34632
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 Universidade Federal do Paraná
publisher.none.fl_str_mv Universidade Federal do Paraná
dc.source.none.fl_str_mv Floresta
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
_version_ 1823242122611916800

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