Cement kiln tail gas denitrification device

The utility model discloses a denitration and denitrification device for cement kiln tail gas, which comprises an ammonification structure, a denitrification structure and a denitrification structure,and the ammonification structure comprises a centrifugal ammonia unloading pump, a storage tank, a screw pump and a spray gun communicated with the screw pump; a dilute ammonia structure; low-nitrogen combustor, it comprises a central sleeve, the central air pipeline is wrapped outside the central sleeve; wherein the pulverized coal pipeline is arranged outside the central air pipeline, the firstprimary air pipeline is arranged outside the pulverized coal pipeline, the second primary air pipeline is arranged outside the first primary air pipeline, the protective shell is arranged on the outer surface of the second primary air pipeline, and the filter plate is arranged on the left side of the protective shell. According to the utility model, under the action of the first primary air pipeline and the central air pi