脱硝分解炉的设计及实际应用  

Design and Practical Application of Denitration Calciner

作　　者：赵睿敏 于永现 凌金辉 闫艳选 ZHAO Ruimin;YU Yongxian;LING Jinhui;YAN Yanxuan(Weihui Tianrui Cement Co.,Ltd.,Xinxiang Henan 453100,China)

机构地区：[1]卫辉市天瑞水泥有限公司,河南新乡453100

出　　处：《水泥技术》2022年第2期40-45,共6页Cement Technology

摘　　要：对水泥烧成系统的氮氧化物形成机理进行了分析,形成了脱硝分解炉的设计思路。脱硝分解炉的设计思路为,通过提高三次风管高度,降低分解炉喂煤点位置,在中间形成一个缺氧区域,在分解炉下部创建脱硝还原区,最终将回转窑内生成的氮氧化物全部还原。实际改造项目显示,脱硝分解炉结合SNCR系统,可将系统氮氧化物排放浓度控制在50mg/Nm^(3)以下,同时可大幅减少氨水使用量。The formation mechanism of nitrogen oxides was analyzed,and the design idea of denitration calciner was formed.The design idea of denitration calciner is to increase the height of the tertiary air duct,reduce the position of coal feeding point in the calciner,form an anoxic area in the middle,and create a denitration reduction area in the lower part of the calciner,and finally reduce all the nitrogen oxides generated in the rotary kiln.The actual transformation project shows that the emission concentration of nitrogen oxides combined with SNCR system can be controlled within 50mg/Nm^(3),and the consumption of ammonia water is greatly reduced.

关 键 词：分解炉 氮氧化物 超低排放 

分 类 号：TQ172.622.29[化学工程—水泥工业]