油田用咪唑啉季铵盐缓蚀剂的合成及性能评价  

Syntheses of Imidazolium Quaternary Corrosion Inhibitor for Oilfield and Evaluation on Its Performance

作　　者：闫杰[1] 李茜璐[1] 杨洪烈[2] 孙川[1] 田发国[1] 

机构地区：[1]西南石油大学化学化工学院,成都610500 [2]中海油田服务股份有限公司,湛江524057

出　　处：《精细石油化工进展》2009年第10期9-12,共4页Advances in Fine Petrochemicals

摘　　要：以油酸、二Z烯三胺及季铵化试剂为主要原料,合成了适用于油田的咪唑啉季铵盐缓蚀剂。确定了该缓蚀剂的最佳合成条件:油酸和二乙烯三胺摩尔比为1:1.2,酰胺化反应温度160℃、反应时间1.5 h,环化反应温度220℃、反应时间6.5 h,季铵化试剂为硫酸二甲酯,其与咪唑啉中间体摩尔比为1:1,季铵化反应温度50℃、反应时间2.5 h。性能评价表明,该咪唑啉季铵盐缓蚀剂在模拟油田现场盐水中具有良好的缓蚀性,当与OP-10、SDS、KI分别复配时,均显示良好的协同效应,并且具有较好的水溶性。An imidazolium quaternary corrosion inhibitor suitable for oilfield was synthesized with oleic acid, diethylenetriamine and quaternary ammonium reagent as major raw materials. The optimal synthesis condition for the corrosion inhibitor was determined as follows： the molar ratio of oleic acid to diethylenetriamine was 1 ： 1.2, acylation reaction temperature was 160 ℃, reaction time was 1.5 h ; cyclization reaction temperature was 220 ℃, reaction time was 6.5 h ; dimethyl sulfate was selected as quaternization reagent and the molar ratio of dimethyl sulfate to imidazoline intermediate was 1 ： 1, quaterization temperature was 50 ℃, reaction time was 2.5 h. The results of performance evaluation showed that the imidazolium quaternary corrosion inhibitor exhibited good corrosion inhibition in simulative oilfield saline water, good synergistic effect when it was compounded with OP - 10, SDS and KI respectively and good water-solubility.

关 键 词：缓蚀剂 咪唑啉季铵盐 腐蚀 协同作用 

分 类 号：TG174.42[金属学及工艺—金属表面处理]