Obtenção de banana passa por meio de secagem via gaseificação de carvão vegetal

• Ano de defesa: 2011
• Autor(a) principal: Oliveira, Maria da Conceição Trindade Bezerra e
• Orientador(a): Silva, Jadir Nogueira da
• Banca de defesa: Lacerda Filho, Adílio Flauzino de , Melo, Evandro de Castro , Monteiro, Paulo Marcos de Barros
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Mestrado em Engenharia Agrícola
• Departamento: Construções rurais e ambiência; Energia na agricultura; Mecanização agrícola; Processamento de produ
• País: BR
• Palavras-chave em Português: Banana passa; Carvão vegetal; Armazenamento
• Palavras-chave em Inglês: Dehydrated banana; Charcoal; Storage
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA
• Link de acesso: http://locus.ufv.br/handle/123456789/3591

This work presents data and studies related to the production of syngas from gasification of residues from coffee and wood production processes. Chemical composition data from residues were gathered and all showed great potential for energy production in Brazil, with energetic potential value superior to 15.5 PJ per year. Residues from wood process (in the form of chips) and residues of coffee production (in the form of husk and wood) were submitted to gasification process, in a downdraft commercial gasifier, being air as gasification agent. The syngas composition was monitored in a syngas analyser as the concentration v.b.(%) of CO, CO2, CH4 and H2, and heating value (MJ/m³). It was also analyzed the data regarding gasification agent properties, temperature of reduction and combustion zones, gasifier pressure and fuel consumption rate, for each residue gasified. It was observed that each residue produced a syngas with different compositions, being the syngas from coffee husk with the highest heating value (7.76 MJ/m3) with predominance of methane (14.77%), and the syngas from coffee wood with the lowest heating value (5.45 MJ/m3) with predominance of carbon monoxide (14.03%). The gasification of eucaliptus chips showed an average heating value of (6.60 MJ/m3), with predominance of carbon monoxide (19.02%), regular chemical composition during test period and best operational performance among residues. The efficiency of mass and energy conversion was in accordance with others studies, suggesting all residues studied as viable energy sources for gasification processes.