空冷器翅片管泄漏原因分析  

Analysis on Leakage Reason of Fin Tube for Air Cooler

作　　者：张玉福[1,2,3] 宋文明[1,2,3] 马颖[1] 郝远[1] 卢雪梅[2,3] 

机构地区：[1]兰州理工大学,兰州730050 [2]甘肃蓝科石化高新装备股份有限公司,兰州730070 [3]机械工业兰州石油化工设备检测所有限公司,兰州730070

出　　处：《理化检验（物理分册）》2015年第7期488-492,共5页Physical Testing and Chemical Analysis(Part A:Physical Testing)

基　　金：甘肃省自然科学基金项目(1208RJZA189)

摘　　要：某天然气装置再生器空冷器翅片管管束发生泄漏。通过化学成分分析、金相检验、断口分析以及X射线衍射分析等手段,对翅片管泄漏的原因进行了分析。结果表明:由于天然气中含有腐蚀性介质,介质中的二氧化碳使管内壁出现酸性水腐蚀环境,在水相部位管壁腐蚀明显减薄,二氧化碳分压较高引起严重的局部腐蚀,以至穿孔并最终发生泄漏。The leakage happened on the fin tube for air cooler in gas regenerator. By means of chemical composition analysis, metallographic examination, fracture analysis, X-ray diffraction analysis and so on, the leakage reason of fin tube was dissected. The results showed that the corrosive medium was contained in natural gas, the acidic water appeared on the inner surface of fin tube under the operating conditions owing to the existing of CO2, which resulted in the corrosion thinning for fin tube. There was corrosion pore appeared on the thinner area of fin tube on account of the higher partial pressure of CO2, which resulted in the leakage.

关 键 词：翅片管 泄漏 酸性水 腐蚀 

分 类 号：TE965[石油与天然气工程—石油机械设备]