电站锅炉水冷壁区域高温腐蚀及横向裂纹原因分析  

High-Temperature Corrosion and Transverse Crack Analysis of Water Wall Tube at Power Station Boiler

作　　者：李月华[1] 李强[1] 

机构地区：[1]上海锅炉厂有限公司,上海200245

出　　处：《锅炉技术》2017年第6期46-49,共4页Boiler Technology

摘　　要：某电厂1台600MW前后墙对冲亚临界锅炉在炉内实施了低氮燃烧改造,1年后检查发现水冷壁管出现较大面积的高温腐蚀和横向裂纹缺陷,严重影响锅炉的安全稳定运行。通过对缺陷区域水冷壁管进行取样试验,采用宏观观察、微观能谱和XRD等手段,分析了水冷壁管产生高温腐蚀和横向裂纹的原因。After low-Nox optimizing at a 600 MW subcritical swirl-burning Boiler, High- temperature corrosion and transverse crack has been found on the outer wall of water-wall tubes in a large area one year later, it is a bad affect to the boiler＇s safety operation. This chapter is to research the failure material to get the reason how the high-temperature corrosion and transverse crack happened through the method of macro-observation, micro- spectrum analysis and XRD analysis etc.

关 键 词：低氮改造 高温腐蚀 横向裂纹 

分 类 号：TK229.2[动力工程及工程热物理—动力机械及工程]