烷基化换热器的腐蚀失效分析和防护措施  

Analysis of Heat Exchanger Failure of Alkylation Unit and Protection Measures

作　　者：周喜政[1] 任志菁 陈刚 何业东[2] 齐慧滨[2] 朱日彰[2] 

机构地区：[1]大连石油化工公司设备研究所,辽宁省大连市116032 [2]北京科技大学北京腐蚀与防护中心,北京市100083

出　　处：《石油化工腐蚀与防护》1998年第4期25-27,45,共4页Corrosion & Protection In Petrochemical Industry

摘　　要：通过对烷基化车间换热器腐蚀形貌、特征、产物、腐蚀介质、积垢、材料以及换热器流体特性的研究和分析,认为烷基化换热器的腐蚀失效主要由空泡腐蚀和湍流腐蚀引起,并提出了4项防腐蚀措施.经现场应用证明:改变设计或安排辅助管可以有效地减缓冷却管与管板结合部位的严重腐蚀.It was concluded from the studies and analysis of corrosion types, characteristics, corrosion products and corrosion media, fouling deposit and fluid properties of the heat exchangers in alkylation unit that the failure of the exchanger was mainly caused by bubbling corrosion and turbulent flow corrosion. Four corrosion protection measures were suggested. It was proven by site application that changing design or installing auxiliary pipes could effectively alleviate the severe corrosion at the joint of tubes and tube sheet.

关 键 词：烷基化 换热器 腐蚀 失效分析 防腐 炼油厂 

分 类 号：TE985.9[石油与天然气工程—石油机械设备] TE965.07