Biomass fuel gasification device

The utility model discloses a biomass fuel gasification device, which is equipped with a furnace body. The upper end of the furnace body is equipped with a feeding opening and a sealing cover, the furnace body is equipped with an inner furnace wall and an outer furnace wall, a water jacket is formed between the inner furnace wall and the outer furnace wall, the upper portion of the inner furnace wall is equipped with a plurality of gas inlet pipes and a plurality of water inlet steam pipes, the upper portion inside the furnace is equipped with a balance gas inlet pipe, the middle portion of the outer wall of the furnace body is equipped with a gasification medium inlet pipe, the lower portion of the furnace body is equipped with a sealed ignition opening and an ash hole, and the inner furnace wall corresponding to the ignition opening and the ash hole is respectively equipped with an upper grate and a lower grate, namely utilizing a double-grate structure. The outer furnace wall between the two grates is equipped with a gasification gas outlet pipe, namely utilizing a bottom gas outlet structure. The outer furnace wall below the grates is equipped with a water inlet pipe of the water jacket. The water inlet pipe of the water jacket is connected with an automatic water replenishing tank outside the furnace. The biomass fuel gasification device is adaptable to biomass fuel gasification, generates biomass fuel gas, is novel in structure, high in gasification rate, low in tar content in the fuel gas, convenient in ignition and safe in fuel gas usage, can be produced continuously and is energy-saving and environment-friendly.