Method and device for preparing fuel gas from biomass/domestic garbage double bed type heat decomposition

The present invention relates to a biomass/domestic refuse double-bed type pyrolysis gas-making method and its equipment, belonging to the field of energy source environment protection technology. Said invention adopts combination quick-bed combustion and waterfall flow type pyrolysis chamber, uses circulating solid granule material as heat carrier, specially, its pyrolysis chamber adopts oblique guide plate, and the inlet of said pyrolysis chamber is equipped with a non-mechanical control valve material-mixing device, so that it can raise yield and heat value of gas.