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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Energy gains of Eucalyptus by torrefaction process

Full text
Author(s):
Erica Leonor Romão [1] ; Rosa Ana Conte [2]
Total Authors: 2
Affiliation:
[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
Total Affiliations: 2
Document type: Journal article
Source: Maderas : Ciencia y tecnología; v. 23, 2020-10-22.
Abstract

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)

FAPESP's process: 16/13852-3 - Chlorine behavior study in the process of torrefaction and pelletizing of woody biomass for power generation
Grantee:Erica Leonor Romao
Support type: Program for Research on Bioenergy (BIOEN) - Regular Program Grants