Gas treatment device of biomass gasifier

The utility model provides a gas treatment device of a biomass gasifier. The gas treatment device comprises a gas inlet, a gas outlet and a dust and waste liquor collector, wherein the gas inlet is connected with the dust and waste liquor collector through a communicating pipeline; a waste liquor discharge pipeline is connected below the tail end of the dust and waste liquor collector; a heat exchange pipe is vertically arranged above the dust and waste liquor collector; and the gas outlet is communicated and connected above the heat exchange pipe. The gas treatment device provided by the utility model has the advantages of obviousness in gas cooling effect, high separation efficiency of high-temperature combustible gas and phenols from other oxygen-containing hydrocarbon compounds and dust and convenience for dust and waste liquor cleaning and prolongs the continuous working time of the biomass gasifier; and the gas treatment device of the biomass gasifier can provide the heat energy for a workshop for heati