储罐内加热盘管腐蚀原因及改进建议  

Corrosion Causes of Heating Coil in Oil Storage Tank and Improvement Suggestions

作　　者：王思杨 杨玉峰 周洋 高博颢 WANG Siyang;YANG Yufeng;ZHOU Yang;GAO Bohao(College of New Energy and Materials,China University of Petroleum,Beijing 102249,China;PipeChina Institute of Science and Technology,Langfang 065000,China;PipeChina North Pipeline Co.,Ltd.,Langfang 065000,China)

机构地区：[1]中国石油大学(北京)新能源与材料学院,北京102249 [2]国家管网集团科学技术研究总院分公司,廊坊065000 [3]国家管网集团北方管道有限公司,廊坊065000

出　　处：《腐蚀与防护》2024年第5期105-108,共4页Corrosion & Protection

摘　　要：针对原油储罐加热盘管腐蚀泄漏频发现象,分析了储罐底部加热盘管腐蚀失效的原因。另外,针对加热盘管外部防腐蚀涂料选择难题,通过盐雾腐蚀试验模拟储罐内加热盘管的服役工况,研究了盐雾腐蚀后环氧树脂、无机富锌和聚氨酯三种防腐蚀涂层的表观形貌、表面粗糙度及腐蚀速率。结果表明:相对于聚氨酯涂层、无机富锌涂层,环氧树脂涂层的表面更光滑,表面粗糙度和腐蚀速率数据更低,分别为5.9 nm和9μm/a,该涂层更适合作为加热盘管防腐蚀涂层,可延长加热盘管的使用寿命,保障储罐的安全高效运营。Regarding the frequent corrosion leakage of heating coils in crude oil storage tanks,the reasons for corrosion failure of heating coils at the bottom of the storage tanks were analyzed.In order to solve the problem of selecting external anti-corrosion coatings for heating coils,the service condition of heating coils in storage tanks was simulated by salt-pray corrosion test.The appearance,surface roughness and corrosion rate of three anti-corrosion coatings,epoxy resin,inorganic zinc-rich and polyurethane,were studied after salt-spray corrosion.The results show that compared with polyurethane coating and inorganic zinc-rich coating,the surface of epoxy resin coating was smoother,and the surface roughness and corrosion rate were lower,which were 5.9 nm and 9μm/a,respectively.So the epoxy resin coating is more suitable as an anti-corrosive coating for heating coils,which can extend the service life of heating coils and ensure safe and efficient operation of storage tanks.

关 键 词：储罐 加热盘管 腐蚀 防腐蚀涂层 

分 类 号：TE988[石油与天然气工程—石油机械设备]