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Gasification of different biomasses in a concurrent fixed bed reactor: Thermodynamics assessment towards its bioenergy potential
Biomass & Bioenergy ( IF 5.8 ) Pub Date : 2024-12-07 , DOI: 10.1016/j.biombioe.2024.107530 Mateus Alves Magalhães, Angélica de Cássia Oliveira Carneiro, Dandara Paula da Silva Guimarães, Gabriel Browne de Deus Ribeiro, Marcio Aredes Martins, Ana Márcia Macedo Ladeira Carvalho, Fernanda de Jesus Jorge
Biomass & Bioenergy ( IF 5.8 ) Pub Date : 2024-12-07 , DOI: 10.1016/j.biombioe.2024.107530 Mateus Alves Magalhães, Angélica de Cássia Oliveira Carneiro, Dandara Paula da Silva Guimarães, Gabriel Browne de Deus Ribeiro, Marcio Aredes Martins, Ana Márcia Macedo Ladeira Carvalho, Fernanda de Jesus Jorge
Gasification is considered a promising technique for converting biomass into fuels and chemicals products. Its viability must be guaranteed when obtaining great conversion yields, gas with high calorific value and low tar content. It is also important to develop efficient equipment that work with different biomasses. Aiming to assess this potential, this paper evaluated the operational performance of a fixed-bed and concurrent flow gasifier as well as the gas quality by using five different biomasses in gasification process, which were: in natura and torrefied eucalyptus woodchips, in natura and torrefied pine pellets and eucalyptus charcoal. Gas and biomasses characterizations were made and some improvements for conversion optimization were discussed. The results showed that biomasses gasification was technically feasible, reactors’ performance and operation were affected by biomasses chemical and physical properties. Torrefied biomasses reduced the percentages of CO2 (−18.4 %) and H2 (−12.1 %), while increased the CO (+12.7 %) in the gas, contributing positively to the rise in calorific value. The highest efficiencies were obtained in eucalyptus woodchips gasification, on average 53.2 % of cold efficiency, with no differences between in natura and torrefied woodchips. Finally, in order to increase biomass conversion into gas, modifications in the reactor reduction zone are recommended, such as the creation of a physical barrier to increase gases residence time. Our study will help encourage bioenergy and gasification technologies in developing countries.
更新日期：2024-12-07
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