摘要
燃煤锅炉在采用低氮燃烧器的基础上,锅炉尾部在省煤器与空气预热器之间安装SCR(Selective Catalytic Reduction)脱硝装置,来进一步控制氮氧化物排放,因机组参与电网深度调峰,SCR入口排烟温度过低,影响脱硝效率,甚至退出运行。通过各种技术方案分析比较,推荐采用省煤器分级方案,在600 MW超临界机组实施,有效提高了SCR入口排烟温度,对于指导机组深度调峰,改善SCR运行效率,烟气达标排放,具有重要指导作用。
Coal-fired boiler on the basis of adopting low nitrogen burner, boiler tail between the economizer and air preheater installation SCR denitration device, to control nox emissions further, because the units involved in the depth of the power grid peak shaving, SCR inlet exhaust temperature is too low, affect the efficiency of out of stock, or even run out. Through analysis and comparison of various technical schemes, economizer is recommLended for the classification scheme,in the implementation of 600 MW supereritical unit, effectively improve the SCR inlet fume temperature, depth of peakload for instruction, improve the efficiency of the SCR, flue gas discharging standard, has an important guiding role.
出处
《锅炉技术》
北大核心
2016年第1期70-73,共4页
Boiler Technology
关键词
分级省煤器
给水温度
脱硝效率
classification of economizer
feedwater temperature
denitration efficiency
