SNCR (selective non-catalytic reduction) precise ammonia spraying device and method for incineration kiln

The invention relates to the technical field of environmental protection, in particular to an incineration kiln SNCR precise ammonia spraying device and method.The incineration kiln SNCR precise ammonia spraying device comprises a spray gun, the surface of the spray gun is connected with a flue, the surface of the flue is connected with a urea solution coming from a supply pump, the surface of the flue is connected with instrument compressed air, the surface of the flue is connected with a control system, and the control system is connected with a control system. The surface of the control system is connected with online detection equipment, the surface of the online detection equipment is connected with a gas sampling port, and the surface of the gas sampling port is connected with a spray gun position; the gas sampling port and the spray gun are positioned on the same horizontal line; the number of the flues is five, and the five flues are located at the same position. And the urea solution comes from five