Aiming at the corrosion of water wall and the changes of performance of the denitration system during the optimization process of SNCR+SCR denitrification

the causes of the corrosion of water wall are analyzed by comparing the performance of the spray gun before and after the optimization. And the key precautions and optimization suggestions are proposed for the operation of the system. The influence of the atomization and penetration of spray gun media on the denitration efficiency and NH

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escape amount of the SNCR+SCR denitration process is analyzed by the comparison method. The results show that the three factors of horn structure

pipe connection error and compressed air pipe blockage lead to the corrosion of water wall. The purification performance and economic of SNCR+SCR denitration process could been improved b

y the distribution of urea spray and the new spray gun with better atomization.