Ultra-low emission device for flue gas denitration

The utility model discloses an ultra-low emission device for flue gas denitration, which relates to the technical field of flue gas denitration and comprises a flue gas emission device main body, a control panel is fixedly mounted on the front side of the flue gas emission device main body, and a conveying pipeline is fixedly mounted at the left end of the flue gas emission device main body. A liquid box is fixedly installed at the upper end of the flue gas emission device body, an emission assembly is fixedly installed at the right end of the flue gas emission device body, and an emission pipe is fixedly installed at the right end of the emission assembly. In the filtering process, liquid in the liquid box can be extracted through the sweeping and spraying assembly and the connecting pipe, then spraying is conducted on the outer portion of the filtering net plate through the spraying head, therefore, flue gas can be subjected to denitration and purification treatment when passing through, meanwhile, the filt