Biomass gas combustor

The utility model discloses a biomass gas combustor. The utility model is composed of a controlling circuit, a gas device and a starting device. The gas device comprises a gas tube, a gas spray tube and a filter. The starting device comprises an oil igniting device, a blower, an air tube and a combusting mixing tube. An electromagnetic valve is provided between the filter and the gas spray tube. The utility model is characterized in that the electromagnetic valve is provided between the filter and the gas spray tube. The electromagnetic valve is connected with the controlling circuit. A light sensor and a heat sensor connected with the controlling circuit are arranged in the air tube. The gas spray tube of the gas device is positioned in the combusting mixing tube of an air device. The tube wall of the gas spray tube is provided with a radical spray hole. The combustion mode of the combustor adopts the design approach of the square crossing flow structure of the flow directions of the gas and the air. The mixed gas after the intensive mixing is caused to enter into the combusting chamber to combust and the tar oil in the biomass gas is combusted out. In this way, the utility model overcomes the difficult problem of the influence on an electric controlling device element caused by the tar oil in thebiomass gas.