超临界直流炉首次检修化学检查共性问题及对策  

Discussion on Chemistry Check-up of Supercritical Once-through Boiler

作　　者：张小霓[1] 吴文龙[1] 李长鸣[1] 谢慧[1] 

机构地区：[1]河南电力试验研究院,郑州市450052

出　　处：《电力建设》2010年第8期71-74,共4页Electric Power Construction

摘　　要：总结了河南省8台采用给水还原性全挥发处理方式的600 MW超临界直流炉机组首次检修化学检查中发现的共性问题:水冷壁、省煤器的结垢速率较高;汽轮机叶片积盐速率较高,沉积物成分复杂;机组停运揭缸后低压缸叶片有锈蚀。针对以上问题,分析了其原因,并提出了解决问题的建议。The chemistry check-up was carried out in the first maintenance of eight AVT treatment supercritical once-through boiler 600 MW units in Henan,and some common problems were found,including high scaling rate of the water-cooled wall and coal economizer,high salt deposition rate on the turbine blades,complex composition of deposits,and blade crusting corrosion of low-pressure cylinder.The causes for the problems are analyzed and relevant countermeasures are proposed.

关 键 词：超临界机组 直流炉 给水处理 结垢 积盐 腐蚀 

分 类 号：TM621.8[电气工程—电力系统及自动化]