CFD modeling can also be used in designing a SNCR system for a specific boiler. As the performance of SNCR system is very sensitive to the furnace temperature, the model helps us determine the number of SNCR injectors and their locations.

Models of furnace temperature (upper), urea injection trajectory (middle) and NOx concentration (lower) of Advanced SNCR system, as applied to a 700 MW boiler.

Model of furnace outlet NOx concentration without urea injection (upper) and with urea injection (lower)