SNCR flue gas denitration technology is the reducing agent such as ammonia, ammonia, urea solution is sprayed into a furnace, heated to 850 ~ 1100 ℃, small temperature range, so that NH3 or urea amino reducer can be selectively reducing NOx in flue gas, ammonia escape 8 mg/m3, or less amount of ammonia utilization rate is higher, and corrosive small, less side effects, treatment effect is good.

 SNCR has its advantages in small coal burning, fuel oil, waste incineration, gas unit or industrial boiler. The SNCR system can function in a flexible manner, based on unit operation status. It is not affected by changes of fuel or the unit's load. Also, the process cycle is short. SNCR runs on other systems (such as air preheater and dust collector) and does not produce interference and increase resistance. Compared with SCR flue gas denitration technology, the investment and operation cost of SNCR is relatively low, and there is no additional SO2/SO3 conversion rate, which is very suitable for the denitration modification of the old factory.