摘要
本文针对某大型煤制甲醇项目废热锅炉频繁爆管事故进行分析,通过宏观检验、涡流检测、化学成分分析、力学性能试验、金相分析、扫描电镜观察和能谱分析等方法,研究了废热炉换热管(0Cr18Ni10Ti)爆裂原因,得出结论:换热管爆裂失效属湿硫化氢应力腐蚀(SSCC),原因为换热管与管板接头密封缺陷,废热炉发生了泄漏。
Aim at the frequent explosion of waste heat boiler in process of methanol from coal, the reason was analyzed through macroscopic examination, eddy current testing, chemical composition analysis, mechanical property test, metallographic analysis, scanning electron microscope and energy spectrum methods. The results showed that the frequent explosion of heat exchange tube could be attributed to wet hydrogen sulfide stress corrosion （SSCC） due to the leakage of shift gas including H2S from tube to shell, and the leakage was caused by the sealing defects of tube and tube plate.
作者
胡玉龙
刘建江
李丰泉
刘长福
王英杰
韩继鹏
Hu Yulong;Liu Jianjiang;Li Fengquan;Liu Changfu;Wang Yingjie;Han Jipeng(Inner Mongolia Autonomous Region Boiler and Pressure Vessel Inspection and Research Institute Hohhot 010020;School of Energy and Power Engineering,Inner Mongolia University of Technology Hohhot 010051;Inner Mongolia Electric Power Research Institute Hohhot 010020)
出处
《中国特种设备安全》
2018年第9期69-73,共5页
China Special Equipment Safety
关键词
废热锅炉
换热管
硫化氢
应力腐蚀
Waste heat boiler
Exchange heat tube
Hydrogen sulfide Stress corrosion
