Correlating biomass properties, gasification performance, and syngas applications of Brazilian feedstocks via simulation and multivariate analysis

Autor(es)

Motta, Ingrid Lopes ; Marchesan, Andressa Neves ; Maciel Filho, Rubens ; Wolf Maciel, Maria Regina

• Tipo de documento: Artigo Científico
• Fonte: INDUSTRIAL CROPS AND PRODUCTS; v. 181, p. 13-pg., 2022-03-22.

Resumo

Biomass gasification is the thermochemical conversion of biomass mainly into syngas, and sugarcane bagasse (SCB) is its main feedstock in Brazil. However, the seasonal production of SCB influences biomass supply. This paper analyzed, via multivariate analysis, gasification datasets of 12 Brazilian feedstocks obtained from simu-lation to determine possible substitutes for SCB, optimal gasification conditions for all biomasses aiming at FT synthesis downstream, and key parameters for several syngas applications. A validated simulation in Aspen PlusTM of a fluidized bed gasifier generated one dataset with fixed gasification conditions used in hierarchical cluster analysis (HCA) and principal component analysis (PCA), and another with varying temperatures and S/B to obtain regression models via partial least squares (PLS) for optimization and Monte Carlo simulations. HCA and optimization using PLS models showed that sugarcane straw, energy cane, energy cane bagasse, and corn straw have similar gasification performances as SCB, being possible substitutes. Independent thermochemical plants based on eucalyptus, or corn and soybean straws are also suggested. Lignin is mostly useful for heat and power applications. PCA and HCA highlighted important correlations between inputs and outputs. Monte Carlo simulations suggested biomasses of lower C and higher O contents to obtain syngas suitable for FT synthesis and the opposite for applications of higher syngas heating values. (AU)

• Processo FAPESP: 15/20630-4 - Desenvolvimento integrado de biorrefinaria e planta de bioetanol de cana-de-açúcar com emissão zero de CO2: rotas para converter recursos renováveis em bioprodutos e bioeletricidade
• Beneficiário: Rubens Maciel Filho
• Modalidade de apoio: Auxílio à Pesquisa - Temático