Biomass gasification gas derived from CFB (Circulating Fluidized-Bed) gasifier that contains a few impurities that may cause some troubles must be refined before being used. This report discusses a refinement scheme of the biomass gasification gas that may apply for biomass gasification-hybrid system of generating electricity and synthesizing methanol. The refinement process consists of high temperature gas filtration, catalytic tar reforming, wet gas scrubbing, desulfurizing agent and hydrogenation catalyst. An examination was done for the refinement process for woody biomass gasification gas at the bench test apparatus. In those experiments, the refinement process could eliminate sulfide under 0.1 ppm-dry and unsaturated aliphatic hydrocarbons under 0.01%-dry from woody biomass gasification gas, and we could collect 93-95% methanol. Reaction yield of methanol had not fallen during the total of 20 hours.
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