| 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。 |
| 关键词: 腐蚀 曼尼希碱 硫脲 钨酸钠 协同作用 |
| DOI： |
| 分类号:TG174.42 |
| 基金项目: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) |
|
| Research on performance of Mannich bases and its combined corrosion inhibitor |
|
Ren Xiaoguang1,2, Yang Jie1
|
|
1.Beijing University of Chemical Technology,Beijing 100029,China;2.Beijing Institute of Petrochemical Technology,Beijing 102617,China
|
| Abstract: |
| 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. |
| Key words: corrosion Mannich bases thiourea sodium tungstate synergy |
