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Discussion of SNCR technology in the furnace of large-capacity pulverized boilers

ZHU Jiang-Tao1,WANG Xiao-hui1,TIAN Zheng-bin2,QUE Yong-ming3(1.Guo Hua Zhe Jiang Energy Ning Hai Power Plant,Ning Bo 315612,China;2.Dai Hai Power Plant,Nei Meng Gu 013700,China;3.Dong Fa Environmental Protection Engineering Co,Hang Zhou 311203,China)  
SNCR is a simple,economically practical system for denitrogenation of power boilers.In this paper,we described the denitrogenation mechanisms and system of SNCR.Important factors,such as furnace temperature,residence time and types of reductants,were discussed in detail,which influence NOx reduction efficiency.Some important technical parameters should be considered in the design of the system in order to reduce the leakage of reductants.
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