Patent ID: 6991769

Claim:
A methanol synthesis system making use of biomass, characterized by comprising: a biomass gasification furnace for gasifying biomass; a gas purification unit for purifying gas generated through gasification performed in the biomass gasification furnace; and a methanol synthesis unit for synthesizing methanol from H 2 and CO contained in the resultant purified gas; wherein the biomass gasification furnace comprises means for feeding pulverized biomass having an average particle size (D) falling within a range of 0.05≦D≦5 mm and combustion-oxidizing-agent-feeding means for feeding oxygen or a mixture of oxygen and steam serving as a combustion-oxidizing agent, whereby gasification of the biomass is performed under gasification conditions that the mol ratio of oxygen [O 2 ]/carbon [C] in the biomass gasification furnace falls within a range of 0.1≦O 2 /C<1.0, the mol ratio of steam [H 2 O]/carbon [C] falls within a range of 1≦H 2 O/C; and the temperature of the interior of the furnace is 700–1,200° C.