FAILURE ANALYSIS ON ABNORMAL THINNING OF ELBOWS IN THE ECONOMIZER AT WASTE HEAT BOILER SYSTEM

被引：0
|
作者：
Wang, Sheng-Hui [1 ]
Luo, Xiao-Ming [1 ]
Yang, Yu-Qing [1 ]
Tang, Jian [1 ]
Yang, Zhen-Guo [2 ]
机构：
[1] Shanghai Inst Special Equipment Inspect & Tech Re, Shanghai, Peoples R China
[2] Fudan Univ, Shanghai, Peoples R China
来源：
ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6B | 2015年
关键词：
elbow; economizer; failure analysis; dew point; corrosion;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Abnormal wall thinning of elbows were detected in the economizer at waste heat boiler system. In the failure analysis, material analysis, metallographic examination, macro- and microstructure analysis and composition analysis were conducted. We analyzed the causes and mechanisms of abnormal wall thinning. The failure causes were found to be sulfuric dew point corrosion. Finally, corresponding countermeasures were suggested.
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页数：11
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