Simulation of Bio-syngas Production from Biomass Gasification via Pressurized Interconnected Fluidized Beds

摘要

Bio-syngas production from biomass gasification via pressurized interconnected fluidized beds was described. The interconnected fluidized beds technology separates the gasification and combustion processes of biomass, and the heat is transferred from combustor to gasifier by bed materials, while extra heat needed in gasification process is provided by additional biomass burning in the combustor. The simulation of the whole process was carried out with Aspen Plus software. The effects of gasification temperature (T_g), gasification pressure (p_g) and steam to biomass ratio (S/B) on bio-syngas production were studied. The results showed that gasification temperature, gasification pressure, and S/B had great influences on the bio-syngas composition and to achieve high carbon conversion and yield of high-quality bio-syngas, the suitable gasification temperature is around 750 °C, and the gasification pressure and S/B could not too high.