Eventos Anais de eventos
ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
EXERGETIC ANALYSIS OF BIOMASS TORREFACTION AND GASIFICATION FOR ENERGY GENERATION IN INTERNAL COMBUSTION ENGINES
Submission Author:
Felipe Solferini de Carvalho , SP
Co-Authors:
Felipe Solferini de Carvalho, Caio Rufino, Pedro Lacava
Presenter: Felipe Solferini de Carvalho
doi://10.26678/ABCM.ENCIT2022.CIT22-0044
Abstract
The present work shows the exergetic analysis of the valorization of biomass using thermochemical processing for power generation in an IC engine. The producer gas compositions were predicted using a stoichiometric thermochemical equilibrium model and then simulated in an IC engine using ANSYS CHEMKIN PRO®. The compositions were predicted for bamboo, sugar cane bagasse, and rice husk for two different experimental torrefaction temperatures of 250 °C and 300 °C. Results indicated a positive influence of torrefaction in the gasification, making a producer gas more suitable to be used in internal combustion engines. The exergetic analysis of torrefaction was done both for each individual conversion process and for the system as a whole. The results showed that for the torrefaction of 300 °C the torrefier is the main source of exergy destruction due to the mass loss on the feedstock, while at 250 °C the gasifier is the main source of exergy destruction due to the thermochemical conversion. The overall exergetic efficiency increased for the three analyzed feedstocks for the torrefaction at the temperature of 300 °C. For the case of torrefaction at 250 °C, only bamboo benefited on the overall exergetic efficiency.
Keywords
Torrefaction, Biomass gasification, Internal combustion engine, Exergetic Analysis
