To optimize the design of selective non-catalytic reduction (SNCR) process for a 600 MW W-flame boiler

the chemical kinetics analysis and fluid dynamics analysis were applied to simulate the SNCR process.The design parameters of the SNCR process including the design temperature

de-nitrification efficiency in theory and position of spray gun were determined

and a denitrification rate of 46% was finally obtained.The results show that

the chemical kinetics analysis deosn't consider the effect of nonuniform mixing of the reducing agent and NO_x

so the theoretical efficiency is higher.The fluid dynamics analysis takes into account the effect of mass transfer

so the denitrification efficiency is lower than the theoretical value.In practical engineering

the mixed mass transfer is an important factor affecting the efficiency of SNCR denitration