Experimental investigation on eucalyptus sawdust torrefaction for energy properties upgrading Investigação experimental na torrefação da serragem de eucalipto para aprimoramento de propriedades energéticas

Autor: Da Silva, Robson Leal, Patelli Júnior, José Ricardo, Seye, Omar, Michels, Carolina Santana, De Paula, Isabele Oliveira [UNESP], Schneider, Paulo Smith
Přispěvatelé: Universidade Federal da Grande Dourados Ufgd, Universidade Estadual de Maringá (UEM), Universidade Estadual Paulista (Unesp), Universidade Federal Do Rio Grande Do sul Ufrgs
Jazyk: angličtina
Rok vydání: 2020
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Zdroj: Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Popis: Made available in DSpace on 2020-12-12T01:37:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-03-01 Wood harvesting presents excellent productivity in Brazil, which is one of the largest producers worldwide, Eucalyptus mainly. Torrefaction as a thermal treatment for woody biomass (Eucalyptus) was evaluated to improve its energy characteristics as material for combustion with biomass valuation. The methodology considered the torrefaction process with nine combinations, three residence times (20, 40 and 60 minutes) and three reaction temperatures (180, 220 and 260°C) for wood samples. Quality aspects and quantitative parameters were determined experimentally, literature correlations and equations (proximate and ultimate analyzes, hygroscopicity, HHV, mass and energy yields). Main conclusions are: A) Hygroscopicity decreases (increasing hydrophobicity) providing a better storage condition aiming at commercialization; b) Volatile matter and fixed carbon contents are improved, δTVM,db=-4.7% and δTFC,db =+5.3%, while H/C and O/C ratios tend to lower values when enhancing its quality; c) The darker the biomass after roasting (biochar), the better are its quality for energy purposes; d) Biomass upgrading occurs when increasing its HHV (up to 5.1%, from 18.62 up to 19.58 MJ.kg-1), even with energy yield lowering when intensifying torrefaction (nE-Yield down to 0.9451); e) Torrefacted biomass (char) corresponds to intermediate energy properties between raw biomass and charcoal. Faculdade de Engenharia Faen Universidade Federal da Grande Dourados Ufgd Programa de Mestrado em Engenharia Mecânica Pem Universidade Estadual de Maringá Uem Programa de Pós-graduação em Engenharia Mecânica Ppgem Universidade Estadual Paulista Unesp Programa de Pós-graduação em Engenharia Mecânica Promec Universidade Federal Do Rio Grande Do sul Ufrgs Programa de Pós-graduação em Engenharia Mecânica Ppgem Universidade Estadual Paulista Unesp
Databáze: OpenAIRE
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