Process modelling and thermodynamic performance optimization of biomass air gasification fuelled with waste poultry litter pellet by integrating Aspen plus with RSM

Abstract

This present study investigates the processing of waste poultry litter pellet biomass for the generation of enriched hydrogen syngas using biomass gasifier. Modelling of biomass gasifier was performed in Aspen Plus and Model validation was done using four different agricultural waste biomass with the experimental result and, a good agreement was attained. Sensitivity analysis was performed in which the influence of equivalence ratio (ER), gasification temperature, and moisture content on the producer gas (PG) composition, gas yield, H2/CO ratio, cold gas efficiency (CGE), and the higher heating value (HHV) were investigated. Furthermore, RSM has been employed for the multi-objectives optimization of the variable gasification parameters. R2 value obtained from ANOVA for H2, CGE, and HHV are 92.26%, 93.2%, and 92.4% respectively. The optimized values of H2, CGE, and HHV are 0.21, 57.67%, and 5.71 MJ/Nm3 respectively corresponding to temperature at 830.30 °C, equivalence ratio 0.2, and moisture content 16.36%. The desirability value obtained was around 0.87. © 2022 Elsevier Ltd