Synthesis Gas Production via Biomass Catalytic Gasification

摘要

The biomass-derived synthesis gas production via co-reforming of biogas and H_2-rich syngas produced by biomass air-steam gasification has been investigated in a bubbling bed biomass gasifier with the ultra-stable NiO-MgO catalyst packed in a downstream reactor. The effects of reactor temperature, steam to biomass ratio, equivalence ratio ER, biomass particle size and the biogas feeding rate on the synthesis gas composition and yield was investigated. The results indicated that the composition of synthesis gas was adjusted by co-reforming reaction to meet the desired stoichiometri factor. The H_2/CO ratio of biomass synthesis gas was above 1.5. It contained trace CH_4 and CO_2. With the biogas addition of 0.91-1.21Nm~3 per Kg of biomass, the yield of synthesis gas was 3.93-4.20Nm~3 per Kg of biomass.