曼尼希碱及其复配缓蚀剂性能的研究

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。C，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。

Research on performance of Mannich bases and its combined corrosion inhibitor

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.