水冷壁管受热面失效分析  

A CASE OF THE WATERWALL\|FIRE\|SIDE CORROSION

作　　者：刘素娥[1] 朱自勇[1] 

机构地区：[1]中国科学院金属腐蚀与防护研究所金属腐蚀与防护国家重点实验室

出　　处：《腐蚀科学与防护技术》1999年第3期189-192,共4页Corrosion Science and Protection Technology

摘　　要：通过电子探针、能谱和Ｘ射线衍射等多种分析技术系统分析某电厂锅炉水冷壁管发生局部腐蚀的原因．结果表明，腐蚀产物中硫含量很高，局部区域超过２０（ｗｔ％），产物主要由铁的氧化物和硫化物组成．水冷壁管受热面腐蚀主要原因是高温硫腐蚀．The local corrosion of the fire side of waterwall tubes in a coal\|fired boiler of a power plant was analysed. The results of electronic probe microanalysis, energy dispersion spectrometer and X\|ray diffraction analysis showed that the fire side of waterwall tubes was covered by corrosion products of iron oxide and iron sulfide and sulfur element content was over 20%(wt.) in maximum. The fire\|side corrosion was mainly caused by sulfur corrosion at high temperatures when incompleted fuel combusion occurred.\=

关 键 词：水冷壁管 高温硫腐蚀 锅炉 受热面 失效分析 

分 类 号：TK224.94[动力工程及工程热物理—动力机械及工程]