国内首台火电机组省煤器分级改造提高SCR入口烟温实践  

Practice of Economizer Classification and Reconstruction in the First Domestic Thermal Power Plant to Enhance SCR Inlet Gas Temperature

作　　者：徐昶[1] 徐良[1] 胡杰[1] 徐仲雄[1] 

机构地区：[1]国电浙江北仑第一发电有限公司,浙江宁波315800

出　　处：《锅炉制造》2014年第6期42-43,56,共3页Boiler Manufacturing

摘　　要：北仑电厂2号锅炉低负荷时省煤器出口烟温过低,不能保证机组的脱硝投运率,通过省煤器的分级改造,提高了SCR入口烟气温度,既满足了脱硝设备的烟温要求,又不影响锅炉热效率,为国内同类机组脱硝改造提供了借鉴。At low load, the oulet gas temperature in Beilun 2# boiler economizer is too low to guaran- tee the denitration commissioning rate of the unit. Whereas, classification and reconstruction of econ- omizer is able to enhance SCR inlet gas temperature and meet gas temperature requirement of deni- tration equipment, which can provide references for denitration reconstruction of similar unit in China without influences of boiler thermal efficiency.

关 键 词：SCR 脱硝 烟温 烟道旁路 给水旁路 分级省煤器 

分 类 号：TK09[动力工程及工程热物理]