Energy gains of Eucalyptus by torrefaction process

Autor(es)

Erica Leonor Romão ^[1] ; Rosa Ana Conte ^[2]

Afiliação do(s) autor(es)

^[1] Universidade de São Paulo. Escola de Engenharia de Lorena. Department of Basic and Environmental Sciences - Brasil

^[2] Universidade de São Paulo. Escola de Engenharia de Lorena. Department of Materials Engineering - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Maderas : Ciencia y tecnología; v. 23, 2020-10-22.

Resumo

Abstract: The aim of this study was to evaluate the changes in the characteristics of Eucalyptus spp. from Paraíba Valley region, Sao Paulo - Brazil after torrification process. Torrification is a thermochemical process that occurs at temperatures lower than the pyrolysis process as a pretreatment to improve biomass characteristics for use as biofuel energy in power generation. An experimental study was carried out in a batch reactor at three temperatures (240 °C, 260 °C and 280 °C) with residence time of 30 and 60 minutes. At the indicated operating conditions by elemental analysis, higher heating value and thermogravimetric analysis were evaluated. Result showed that there was a reduction in the oxygen/carbon (O/C) and hydrogen/carbon (H/C) ratios, causing an increase in the thermal energy quality of torrified wood, about of 28 % and 47 % at temperatures of 260 °C with residence time of 60 minutes and 280 °C with 30 minutes, respectively. A thermogravimetric analysis showed that at 260 °C the hemicellulose was almost completely degraded leaving the fuel in better conditions for combustion or gasification processes. (AU)

• Processo FAPESP: 16/13852-3 - Estudo do comportamento do cloro no processo de torrefação e peletização de biomassa lenhosa para geração de energia
• Beneficiário: Erica Leonor Romao
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Regular