Resfriamento artificial de carvão vegetal em fornos de alvenaria
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | http://locus.ufv.br/handle/123456789/749 |
Resumo: | The domestic steel industry has met 21.6% of its energy needs by consuming 84.8% of charcoal production. Part of this production, from planted forests, has increased in recent years and the artificial cooling process of carbonization furnaces emerges to reduce costs and time in the production process. Methodologies of cooling have being researched for the carbonization process, but without the assessment of factors that may influence the quality of charcoal. The objective of this study was to evaluate the performance of a cooling process of furnace containing charcoal, using a heat exchanger for cooling the gases present inside the furnace. The aim of this work was specifically to analyze the influence of the gas flow (present inside the furnace) through the mass of charcoal in final product quality. To investigate the thermal and physical properties of produced charcoal, and propose design methodology for cooling systems for carbonization furnaces of charcoal. During the cooling process, 4 flows were evaluated in three replicates. The heat exchanger promoted reductions in cooling time of 50%, 57% and 63% for the flows of 0.108 m3 m-2 s-1, 0.060 m3 m-2 s-1, and 0.034 m3 m-2 s-1, respectively. It was observed for the higher flows, the occurrence of burning charcoal near the exit of the gases, resulting in an increase of cooling time. For flows adopted, it was found that there was no significant difference between treatment and control (flow 0), in the parameters of quality of charcoal, producing charcoal with desirable characteristics for consumption. Finally, it is suggested that in the design of heat exchangers, the pressure difference between the suction and injection of the gases in the furnace, does not provide infiltration of atmospheric air into the furnace. |
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Santos, Ivanildo da Silva doshttp://lattes.cnpq.br/3077075004460603Carneiro, Angélica de Cássia Oliveirahttp://lattes.cnpq.br/9474032258378987Martins, Márcio Arêdeshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4798288T8Silva, Jadir Nogueira dahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783346P3Barcellos, Daniel Camarahttp://lattes.cnpq.br/6012920962189476Carvalho, Ana Márcia Macedo Ladeirahttp://lattes.cnpq.br/60173926589932882015-03-26T12:31:28Z2013-07-192015-03-26T12:31:28Z2013-03-26SANTOS, Ivanildo da Silva dos. Artificial cooling of wood carbonization furnaces. 2013. 98 f. Tese (Doutorado em Construções rurais e ambiência; Energia na agricultura; Mecanização agrícola; Processamento de produ) - Universidade Federal de Viçosa, Viçosa, 2013.http://locus.ufv.br/handle/123456789/749The domestic steel industry has met 21.6% of its energy needs by consuming 84.8% of charcoal production. Part of this production, from planted forests, has increased in recent years and the artificial cooling process of carbonization furnaces emerges to reduce costs and time in the production process. Methodologies of cooling have being researched for the carbonization process, but without the assessment of factors that may influence the quality of charcoal. The objective of this study was to evaluate the performance of a cooling process of furnace containing charcoal, using a heat exchanger for cooling the gases present inside the furnace. The aim of this work was specifically to analyze the influence of the gas flow (present inside the furnace) through the mass of charcoal in final product quality. To investigate the thermal and physical properties of produced charcoal, and propose design methodology for cooling systems for carbonization furnaces of charcoal. During the cooling process, 4 flows were evaluated in three replicates. The heat exchanger promoted reductions in cooling time of 50%, 57% and 63% for the flows of 0.108 m3 m-2 s-1, 0.060 m3 m-2 s-1, and 0.034 m3 m-2 s-1, respectively. It was observed for the higher flows, the occurrence of burning charcoal near the exit of the gases, resulting in an increase of cooling time. For flows adopted, it was found that there was no significant difference between treatment and control (flow 0), in the parameters of quality of charcoal, producing charcoal with desirable characteristics for consumption. Finally, it is suggested that in the design of heat exchangers, the pressure difference between the suction and injection of the gases in the furnace, does not provide infiltration of atmospheric air into the furnace.O setor siderúrgico nacional supriu 21,6% de suas necessidades energéticas consumindo 84,8% da produção de carvão vegetal brasileira. Parte desta produção, proveniente de florestas plantadas, vem aumentando nos últimos anos e o processo de resfriamento artificial de carvão vegetal em fornos de alvenaria, surge como práticas na redução de custos e tempo do processo produtivo. Metodologias de resfriamentos vêm sendo pesquisadas em praças de carbonização, porém sem a avaliação de fatores que possam influenciar na qualidade do carvão vegetal. Objetivou-se neste trabalho, avaliar a dinâmica de resfriamento de um forno de alvenaria contendo carvão vegetal, utilizando um trocador de calor no resfriamento dos gases presentes no interior do forno. Especificamente, objetivou-se analisar a influência do fluxo dos gases (presentes no forno) pela massa de carvão na qualidade final do carvão vegetal. Investigar as propriedades térmicas e físicas do carvão produzido e propor metodologia de dimensionamento de sistemas de resfriamento para fornos de alvenaria usados na produção de carvão vegetal. Durante o resfriamento, 4 fluxos foram avaliados em 3 repetições. O uso do trocador proporcionou reduções no tempo de resfriamento de 50%, 57% e 63% para os fluxos de 0,108 m3 m-2 s-1, 0,060 m3 m-2 s-1 e 0,034 m3 m-2 s-1, respectivamente. Verificou-se para os maiores fluxos, ocorrência de queima de carvão próximo à saída dos gases do forno, provocando aumentando no tempo de resfriamento. Para os fluxos adotados, verificou-se que não houve diferença significativa entre os tratamentos e a testemunha (fluxo 0), nos parâmetros de qualidade do carvão, produzindo carvão vegetal com características desejáveis para o consumo. Finalmente, sugere-se que no dimensionamento de trocadores, a diferença de pressão entre a sucção e injeção dos gases no forno, não proporcione infiltração de ar atmosférico para o interior do forno.Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorapplication/pdfporUniversidade Federal de ViçosaDoutorado em Engenharia AgrícolaUFVBRConstruções rurais e ambiência; Energia na agricultura; Mecanização agrícola; Processamento de produResfriamento artificialCarvão vegetalFornos de alvenariaArtificial coolingCharcoalCarbonization furnacesCNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLAResfriamento artificial de carvão vegetal em fornos de alvenariaArtificial cooling of wood carbonization furnacesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALtexto completo.pdfapplication/pdf1569643https://locus.ufv.br//bitstream/123456789/749/1/texto%20completo.pdf80cc59dc101aa41d8eeb653df6a89af3MD51TEXTtexto completo.pdf.txttexto completo.pdf.txtExtracted texttext/plain150740https://locus.ufv.br//bitstream/123456789/749/2/texto%20completo.pdf.txt29f521b0a0b48258c82a8e8f7cabf151MD52THUMBNAILtexto completo.pdf.jpgtexto completo.pdf.jpgIM Thumbnailimage/jpeg3685https://locus.ufv.br//bitstream/123456789/749/3/texto%20completo.pdf.jpgd1f8368a33d29343b3149dc01442a4edMD53123456789/7492016-04-06 23:12:44.252oai:locus.ufv.br:123456789/749Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452016-04-07T02:12:44LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.por.fl_str_mv |
Resfriamento artificial de carvão vegetal em fornos de alvenaria |
dc.title.alternative.eng.fl_str_mv |
Artificial cooling of wood carbonization furnaces |
title |
Resfriamento artificial de carvão vegetal em fornos de alvenaria |
spellingShingle |
Resfriamento artificial de carvão vegetal em fornos de alvenaria Santos, Ivanildo da Silva dos Resfriamento artificial Carvão vegetal Fornos de alvenaria Artificial cooling Charcoal Carbonization furnaces CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA |
title_short |
Resfriamento artificial de carvão vegetal em fornos de alvenaria |
title_full |
Resfriamento artificial de carvão vegetal em fornos de alvenaria |
title_fullStr |
Resfriamento artificial de carvão vegetal em fornos de alvenaria |
title_full_unstemmed |
Resfriamento artificial de carvão vegetal em fornos de alvenaria |
title_sort |
Resfriamento artificial de carvão vegetal em fornos de alvenaria |
author |
Santos, Ivanildo da Silva dos |
author_facet |
Santos, Ivanildo da Silva dos |
author_role |
author |
dc.contributor.authorLattes.por.fl_str_mv |
http://lattes.cnpq.br/3077075004460603 |
dc.contributor.author.fl_str_mv |
Santos, Ivanildo da Silva dos |
dc.contributor.advisor-co1.fl_str_mv |
Carneiro, Angélica de Cássia Oliveira |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/9474032258378987 |
dc.contributor.advisor1.fl_str_mv |
Martins, Márcio Arêdes |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4798288T8 |
dc.contributor.referee1.fl_str_mv |
Silva, Jadir Nogueira da |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783346P3 |
dc.contributor.referee2.fl_str_mv |
Barcellos, Daniel Camara |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/6012920962189476 |
dc.contributor.referee3.fl_str_mv |
Carvalho, Ana Márcia Macedo Ladeira |
dc.contributor.referee3Lattes.fl_str_mv |
http://lattes.cnpq.br/6017392658993288 |
contributor_str_mv |
Carneiro, Angélica de Cássia Oliveira Martins, Márcio Arêdes Silva, Jadir Nogueira da Barcellos, Daniel Camara Carvalho, Ana Márcia Macedo Ladeira |
dc.subject.por.fl_str_mv |
Resfriamento artificial Carvão vegetal Fornos de alvenaria |
topic |
Resfriamento artificial Carvão vegetal Fornos de alvenaria Artificial cooling Charcoal Carbonization furnaces CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA |
dc.subject.eng.fl_str_mv |
Artificial cooling Charcoal Carbonization furnaces |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA |
description |
The domestic steel industry has met 21.6% of its energy needs by consuming 84.8% of charcoal production. Part of this production, from planted forests, has increased in recent years and the artificial cooling process of carbonization furnaces emerges to reduce costs and time in the production process. Methodologies of cooling have being researched for the carbonization process, but without the assessment of factors that may influence the quality of charcoal. The objective of this study was to evaluate the performance of a cooling process of furnace containing charcoal, using a heat exchanger for cooling the gases present inside the furnace. The aim of this work was specifically to analyze the influence of the gas flow (present inside the furnace) through the mass of charcoal in final product quality. To investigate the thermal and physical properties of produced charcoal, and propose design methodology for cooling systems for carbonization furnaces of charcoal. During the cooling process, 4 flows were evaluated in three replicates. The heat exchanger promoted reductions in cooling time of 50%, 57% and 63% for the flows of 0.108 m3 m-2 s-1, 0.060 m3 m-2 s-1, and 0.034 m3 m-2 s-1, respectively. It was observed for the higher flows, the occurrence of burning charcoal near the exit of the gases, resulting in an increase of cooling time. For flows adopted, it was found that there was no significant difference between treatment and control (flow 0), in the parameters of quality of charcoal, producing charcoal with desirable characteristics for consumption. Finally, it is suggested that in the design of heat exchangers, the pressure difference between the suction and injection of the gases in the furnace, does not provide infiltration of atmospheric air into the furnace. |
publishDate |
2013 |
dc.date.available.fl_str_mv |
2013-07-19 2015-03-26T12:31:28Z |
dc.date.issued.fl_str_mv |
2013-03-26 |
dc.date.accessioned.fl_str_mv |
2015-03-26T12:31:28Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
SANTOS, Ivanildo da Silva dos. Artificial cooling of wood carbonization furnaces. 2013. 98 f. Tese (Doutorado em Construções rurais e ambiência; Energia na agricultura; Mecanização agrícola; Processamento de produ) - Universidade Federal de Viçosa, Viçosa, 2013. |
dc.identifier.uri.fl_str_mv |
http://locus.ufv.br/handle/123456789/749 |
identifier_str_mv |
SANTOS, Ivanildo da Silva dos. Artificial cooling of wood carbonization furnaces. 2013. 98 f. Tese (Doutorado em Construções rurais e ambiência; Energia na agricultura; Mecanização agrícola; Processamento de produ) - Universidade Federal de Viçosa, Viçosa, 2013. |
url |
http://locus.ufv.br/handle/123456789/749 |
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por |
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por |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Viçosa |
dc.publisher.program.fl_str_mv |
Doutorado em Engenharia Agrícola |
dc.publisher.initials.fl_str_mv |
UFV |
dc.publisher.country.fl_str_mv |
BR |
dc.publisher.department.fl_str_mv |
Construções rurais e ambiência; Energia na agricultura; Mecanização agrícola; Processamento de produ |
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Universidade Federal de Viçosa |
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