多种有机胺的中和缓蚀性能评定  

INVESTIGATION OF CORROSION INHIBITION PERFORMANCE OF ORGANIC AMINES IN CRUDE UNIT OVERHEAD COOLING SYSTEM

作　　者：王海博 武玮[1] 李云[1] 程光旭[1] 胡海军[1] 雷鹏辉 李欣昀[2] 张耀亨[2] 

机构地区：[1]西安交通大学化学工程与技术学院,西安710049 [2]中国石油兰州石化公司研究院

出　　处：《石油炼制与化工》2018年第3期103-106,共4页Petroleum Processing and Petrochemicals

基　　金：中国石油天然气股份有限公司资助项目(20151191)

摘　　要：选取三乙胺、N,N-二甲基乙醇胺、3-甲氧基丙胺、吗啉、乙二胺作为评定对象,采用酸碱中和滴定、气液平衡、腐蚀失重和电化学实验方法对上述胺类物质进行中和缓蚀性能评定。结果表明:5种有机胺中和性能由高到低的顺序为:乙二胺>吗啉>3-甲氧基丙胺>N,N-二甲基乙醇胺>三乙胺;溶解性能由低到高的排序为:三乙胺<乙二胺<3-甲氧基丙胺<吗啉<N,N-二甲基乙醇胺;缓蚀率由高到低的顺序为:乙二胺>N,N-二甲基乙醇胺>三乙胺>3-甲氧基丙胺>吗啉。复配溶液N,N-二甲基乙醇胺与乙二胺浓度比为7∶1时,缓蚀率达到91.78%。The corrosion inhibition performance through neutratiing corrosive material of five organic amines （Triethylamine, N, N-Dimethylethanolamine, 3-Methoxypropylamine, Morpholine and Ethylenediamine） was investigated by acid-base neutralization titration, gas-liquid equilibrium, weight loss and the electrochemical technology. The neutralized performance order for the amines is Ethylenediamine 〉 Morpholine 〉 3-Methoxypropylamine 〉 N, N-Dimethylethanolamine 〉 Triethylamine. The dissolved ability trend is Triethylamine 〈 Ethylenediamine 〈 3-Methoxypropylamine 〈 Morpholine 〈 N,N-Dimethylethanolamine. The corrosion inhibition performance for the amines is Ethylenediamine 〉 N,N-Dimethylethanolamine 〉 Triethylamine〉 3-Methoxypropylamine 〉 Morpholine. When the mixture concentration rate of N, N-Dimethylethanolamine and Ethylenediamine is 7：1, the corrosion inhibition rate is 91.78%.

关 键 词：有机胺 溶解性 中和性 缓蚀性 

分 类 号：TG174.42[金属学及工艺—金属表面处理]