The denitrification dust collector produced by Hebei Feixiang Environmental Protection Equipment Co., Ltd. mainly consists of a cyclone tank wet mechanism, a spray insect catching mechanism, a self-excited washing mechanism, a water level control mechanism, a slag discharge mechanism, a water supply mechanism, etc. After entering the dust collector, the smoke and dust undergo thermal inertia dust removal, spray settling dust removal, and flushing washing dust removal successively. Therefore, this product has a long service life and good desulfurization and dust removal effects.