Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
ASSESSMENT OF TORREFACTION EFFECTS ON PEANUT SHELL COMMERCIAL PELLETS
Submission Author:
Nayssa Ribeiro , PR
Co-Authors:
Nayssa Ribeiro, Dário Machado Júnior, Robson Leal da Silva, Julio Cesar Dainezi de Oliveira
Presenter: Nayssa Ribeiro
doi://10.26678/ABCM.COBEM2019.COB2019-1750
Abstract
Solid fuels are hampered by their inherent characteristics, such as low density, low energy density and hygroscopic. These characteristics could be improved through torrefaction, which is a thermal pre-treatment method to increase energy density and others proprieties. Therefore, the aim of this work was to analyze the characteristics of commercial peanut shell pellets, when submitted to torrefaction at various temperatures (200 – 300ºC) and residence times (20, 40 and 60 min), under a controlled atmosphere in order to improve their quality for use as solid fuel. Therefore, the chemical properties of pellets produced under various torrefaction conditions were investigated to determine their characteristics as solid fuel, based on proximate analysis, the result of every torrefaction temperature and duration, correlation of estimation HHV for each sample. Related fuel quality indices (FR, CI and VI) with the parameters of the torrefaction in order to improve their quality for use as solid fuel. Consequently, when compared with the raw material, each of the torrefied materials showed lower moisture about 4-6%wt. The volatile matter decreases with the increase in time and temperature. Similarly, an increase in the Fixed Carbon and ash happens as volatiles are driven off during the torrefaction. The higher heating value (HHV) of torrefied pellet samples increased by 18.40% when the torrefaction temperature was increased from 200 to 300 °C in residence time of 20 min.
Keywords
