Biomass gasifycation furnace and system for methanol synthesis using gas produced by gasifying biomass

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 H2 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 [O2]/carbon [C] in the biomass gasification furnace falls within a range of 0.1≦O2/C<1.0, the mol ratio of steam [H2O]/carbon [C] falls within a range of 1≦H2O/C;
• and the temperature of the interior of the furnace is 700-1,200° C.