600MW机组“W”火焰锅炉尾部受热面改造经济性试验研究  

The Testing Research on Boiler Economy and Tail Heating Surface Reforming of 600MW Units with W- flame boiler

作　　者：王文生[1] 肖景阳 李彦龙[1] 祝志福 冷杰[1] 

机构地区：[1]辽宁省电力有限公司电力科学研究院,辽宁沈阳110006 [2]内蒙古大板发电有限责任公司,内蒙古大板024000 [3]浑江发电公司,吉林白山134302

出　　处：《锅炉制造》2014年第5期22-24,共3页Boiler Manufacturing

摘　　要：针对某火电厂5号炉排烟温度高、过热器减温水量高等问题,提出了增加省煤器受热面积和预热器漏风治理等改造方案。改造后,锅炉热效率升高0.37个百分点,过热器减温水总量减少35 t/h,预热器漏风率下降2.6个百分点,综合计算供电煤耗下降1.9 g/kWh。若按照机组全年运行5 000 h,平均电负荷500MW计算,一年可以节约燃料4 750 t,经济效益显著提升。Directing against the problem of the desuperheater spray amout （DSA） and the exhaust flue gas temperature being higher than the designed value from boiler No 5, the retrofitting scheme of increasing the heating surface of the economizer and the sealing rehabilitation has been put forward. The boiler performance test after improvement indicates that the boiler efficiency of No. 5 at the full load increases 0.37 percentage points, the DSA and the rate of air lackage decrease 35t/h and 2. 6percentage points,the net coal consumption rate decreases 1.8 g/kWh. According to annual opera- tion hours to be 500 Oh, and power generation load to be 500MW, the annual coal - saving can reach 4 500 t, economic benefit being abvious.

关 键 词：排烟温度 省煤器 供电煤耗 

分 类 号：TK212[动力工程及工程热物理—动力机械及工程]