曼尼希碱及其复配缓蚀剂性能的研究  

Research on performance of Mannich bases and its combined corrosion inhibitor

作　　者：任晓光[1,2] 杨杰[1] 

机构地区：[1]北京化工大学化工学院 [2]北京石油化工学院化学工程学院

出　　处：《石油与天然气化工》2012年第1期82-84,122-123,共3页Chemical engineering of oil & gas

基　　金：国家自然科学基金"高硬度电解质水溶液垢下腐蚀机理及规律研究"(20676017);北京市属市管人才强教计划资助项目(北京市教委URT)

摘　　要：通过使用CMB-4510A缓蚀剂快速评定仪研究了曼尼希碱、硫脲、钨酸钠三种缓蚀剂单独使用及以曼尼希碱为主的二元复配体系对10#碳钢在石油模拟腐蚀液中的缓蚀效果。针对高酸高氯的原油,添加缓蚀剂是一种最有效的防止碳钢腐蚀的方法。实验结果表明:温度为50℃,pH值为6.0时,单独使用曼尼希碱、硫脲和钨酸钠对10#碳钢都有一定的缓蚀效果,其中曼尼希碱和钨酸钠的缓蚀性能优于硫脲;以曼尼希碱为主的缓蚀剂分别与硫脲和钨酸钠进行二元复配,其缓蚀效果均好于单独使用时的缓蚀效果。The inhibition effect of three kinds of single corrosion inhibitor: Mannich bases,thiourea,and sodium tungstate,and binary combinations of Mannich bases to 10# carbon steel in the simulated corrosive liquid using the CMB-4510A inhibitor rapid assessment instrument were studied.For high-acid and high-chloride crude oil,adding corrosion inhibitors are the most effective method of preventing corrosion of carbon steel.The results show that when the temperature is 50℃,pH6.0,Mannich bases,thiourea,sodium tungstate is used individually in the corrosive liquid have a certain effect of corrosion inhibition on 10# carbon steel,in which Mannich bases and sodium tungstate is superior to thiourea;the inhibition effects of binary combinations of Mannich bases compounded with thiourea and sodium tungstate are better than that of three inhibitors while used alone.

关 键 词：腐蚀 曼尼希碱 硫脲 钨酸钠 协同作用 

分 类 号：TG174.42[金属学及工艺—金属表面处理]