Modeling of biomass gasification with CO₂ enrich air as gasifying agent

Abstract

The biomass gasification has been carried out using an updraft gasifier. This work focuses on the production of producer gas from biomass (Rubber Wood). Mathematical model for thermo-chemical process of biomass gasification is developed in this research work. ASPEN PLUS simulator and pilot plant gasifier were used to investigate the effect of reactor temperature, equivalence ratio and CO2 to air ratio on composition of producer gas. The gasifier was operated over a temperature range of 500-1000 C, while varying equivalence ratio from 0.2 to 0.36and CO2 to air percentage from 1% to 10% and it was found that the most of trends were similar for both the case. The results showed Carbon monoxide concentration in the product gas increases with increase in temperature and CO2 to biomass ratio but decreases with increasing equivalence ratio.