200MW燃煤机组脱硝超低排放改造方案研究  

Study of Ultra-low Emission Renovation Scheme for 200 MW Coal-fired Generating Units Denitrification

作　　者：张立娟[1] 马晓辉[1] 刘立[1] ZHANG Lijuan;MA Xiaohui;LIU Li(Sinosteel Tiancheng Environmental Protection Science and Technology Co. , Ltd.,Wuhan 430205)

机构地区：[1]中钢集团天澄环保科技股份有限公司,武汉430205

出　　处：《工业安全与环保》2021年第8期74-78,共5页Industrial Safety and Environmental Protection

基　　金：湖北省技术创新专项资助项目(2019ACA158)。

摘　　要：电厂通过加装催化剂进行脱硝超低排放改造,并对各设备进行冷态优化后,需要对喷氨格栅进行热态调整优化,以提升氨氮的混合均匀性和匹配性。本试验通过在一定工况下热态调整喷氨格栅各支管节流阀的开度,来控制出口氮氧化物的不均匀度,从而保证氨氮混合的均匀性,保证系统安全经济运行。In order to improve the homogeneity and matching of ammonia-nitrogen mixing concentration distribution,it is necessary to adjust and optimize the ammonia-injection grid in on-line state after adding catalysts for ultra-low emission and cold-state optimization.In this study,the opening of the throttle valves of the branch pipes of the ammonia-injection grid is adjusted under certain working conditions to control the ammonia-nitrogen mixing at outlet and to ensure the evenness of NOx,as well as the safe and economic operation of the system.

关 键 词：脱硝 超低排放 喷氨优化 不均匀度 

分 类 号：TM6[电气工程—电力系统及自动化]