Waste gas treatment equipment for kiln tail flue gas denitration

The waste gas treatment equipment comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a pretreatment assembly, the left side of the pretreatment assembly is fixedly connected with a pretreatment flue, and the right side of the pretreatment assembly is detachably connected with a smoke inlet pipeline; the right end of the smoke inlet pipeline is fixedly connected with an SNCR reaction assembly, and the right side of the SNCR reaction assembly is fixedly connected with an SCR reaction assembly; according to the utility model, external cold air is sucked by the fan in the first treatment assembly to be mixed with flue gas, then is in contact with the cooling column to cool the flue gas, and then flows through the dust removal bag, so that residual solid dust and impurities in the flue gas can be screened out, and the situation that the denitration rate is reduced due to insufficient reaction caused by impurity mixing is prevented; a catalyst in the SCR reaction assembly make