Denitration optimization control system of coal power unit

The utility model discloses a coal power unit denitration optimization control system which comprises a boiler, an economizer and a chimney, one end of the boiler is connected with the economizer, the end, away from the boiler, of the economizer is connected with an SCR reactor, one side of the SCR reactor is connected with an air preheater, the output end of the air preheater is connected with a dust remover, and the output end of the dust remover is connected with the chimney. The dust remover is connected with the flue gas denitration device through a pipeline; the chimney is connected with the output end of the flue gas denitration device, a detection unit is arranged at an exhaust port of the chimney, and the detection unit is connected with the data acquisition device. According to the denitration optimization control system for the coal power unit, acquired data are transmitted to the industrial computer through the data acquisition device, meanwhile, the alarm body gives an alarm when the detection un