SCR+SNCR串联技术在氧化铝焙烧炉烟气脱硝中的应用  

Application of SCR+SNCR series technology in flue gas denitrification of alumina calciner

作　　者：李义飞 Li Yifei(Chalco Mining Co.,Ltd.,Zhengzhou 450041,China)

机构地区：[1]中铝矿业有限公司,河南郑州450041

出　　处：《轻金属》2020年第7期58-62,共5页Light Metals

摘　　要：随着国家生态文明建设的不断深化以及蓝天保卫战持续推进,目前热电厂锅炉已实现大气污染物超低排放目标。其中烟气氮氧化物控制技术主要包括低氮燃烧技术(LNB)、选择性非催化还原法(SNCR)脱硝技术、选择性催化还原法(SCR)脱硝技术和SNCR+SCR串联技术。氧化铝行业根据《环办大气函(2019)648号》及《铝工业污染物排放标准》的要求,需对其工业窑炉配套相应的脱硝设备设施,以实现烟气氮氧化物超低排放。本文结合企业生产实际,研究优化SNCR+SCR串联脱硝技术在氧化铝焙烧炉脱硝中的应用参数。With the continuous deepening of the national ecological civilization construction and the continuous advancement of Battle of the Blue Sky,the boilers of thermal power plants have achieved the goal of ultra-low emissions of atmospheric pollutants.The flue gas nitrogen oxide control technology mainly includes low nitrogen burning technology(LNB),selective non-catalytic reduction(SNCR),selective catalytic reduction(SCR)and SNCR+SCR series technology.According to the requirements in the"No.648 Huanban Atmospheric Letter(2019)"and the"Aluminum Industry Pollutant Emission Standards",the alumina industry needs to equip its industrial kilns with the corresponding denitration devices to achieve ultra-low emission of nitrogen oxides in flue gas.In the paper,the application parameters of SNCR+SCR series denitration technology in alumina calciner denitration are studied and optimized by combining with the production practice of the enterprise.

关 键 词：氧化铝 焙烧炉 低氮燃烧技术(LNB) SCR SNCR 氮氧化物 

分 类 号：TF806.1[冶金工程—有色金属冶金]