循环氢压缩机K701A入口管线腐蚀状况与分析
Corrosion Status and Analysis of Inlet Line of Circulating Hydrogen Compressor K701A
金聚慧1
作者信息
- 1. 中国石油抚顺石化公司石油二厂,辽宁 抚顺 113004
- 折叠
摘要
循环氢压缩机作为加氢装置中的关键设备,其运行的安全可靠性对保障整个装置的安全生产和经济效益有着重要意义.近日,某石化公司煤油加氢装置循环氢压缩机K701A入口管线的局部处(焊缝)发生了开裂泄漏.通过对母材和焊接处的材质、金相、电镜分析,研究了管线的腐蚀原因,结果表明:管线焊缝处的泄漏是由管线振动(交变载荷)、局部应力集中(焊缝)和管线内介质腐蚀等因素共同作用,导致管路发生腐蚀疲劳开裂.
Abstract
As the key equipment in hydrogenation unit,the safety and reliability of circulating hydrogen compressor plays an important role in ensuring the safe production and economic benefits of the whole unit.Recently,the partial(weld)of the inlet pipeline of circulating hydrogen compressor K701A in kerosene hydrogenation unit of a petrochemical company cracked and leaked.Through the analysis of the material,metallography and electron microscopy of the base metal and welding,the corrosion causes of the pipeline are studied.The results show that the leakage of the pipeline weld is caused by the joint action of pipeline vibration(alternating load),local stress concentration(weld)and the corrosion of the medium in the pipeline,which leads to corrosion fatigue cracking of the pipeline.
关键词
煤油加氢装置/循环氢压缩机/腐蚀疲劳开裂Key words
kerosene hydrogenating plant/circulating hydrogen ompressor/corrosion fatigue cracking引用本文复制引用
出版年
2024
NETL
NSTL
万方数据