甲甲脂酰胺加热器螺旋盘管泄漏失效分析  

Analysis on Leakage Failure for Acrylonitrile Amide Heater Spiral Coil Pipe

作　　者：徐光远 吴岩石 王子华[2] 张恩勇[3] 黄呈龙 田驰 

机构地区：[1]吉林石化公司检测中心,吉林吉林132022 [2]吉林石化公司丙烯腈厂,吉林吉林132021 [3]华东理工大学,上海200237

出　　处：《压力容器》2013年第6期44-49,共6页Pressure Vessel Technology

摘　　要：针对丙烯晴装置中W-503/W-603酰胺加热器螺旋盘管C-22哈氏合金,在使用一年后经常出现泄漏事故。切割加工腐蚀失效件,进行宏观分析,并对化学成分、金相检验、SEM和EDAX等进行失效分析。结果表明,泄漏是由于冲刷腐蚀和晶间腐蚀造成的,其原因主要是焊接不当、热处理效果较差等引起的。采用合理的焊接工艺和整体固溶处理应是一种有效的解决方案。The article focuses on the C-22 hastelloy in the W-503 /W-603 amide heater spiral coil pipe which exists in the acrylonitrile equipment.Leakage accident often occurs after a year by using the equipment.The cutting processing corrosion failure parts was analyzed by macroscopic view,and the invalidation aspect from chemical component,metallographic examination,SEM and EDAX.The results showed that the erosion corrosion and intergranular corrosion led to the leakage accident.The main problems are inappropriate weld and worse heat treatment,etc.An effective method was proposed by using more proper welding technology and whole solid solution process.

关 键 词：哈氏合金 酰胺和硫酸 腐蚀泄漏 防腐措施 

分 类 号：TH49[机械工程—机械制造及自动化] TQ050.9[化学工程]