硫代氨基咪唑啉盐缓蚀剂的合成及性能研究  

Research on the synthesis and performances of thiocarbamates imidazoline salts corrosion inhibitor

作　　者：杨根全 李志元[2] 

机构地区：[1]中海石油(中国)有限公司湛江分公司,广东湛江524057 [2]中海油天津化工研究设计院有限公司,天津300131

出　　处：《工业水处理》2017年第8期81-84,共4页Industrial Water Treatment

摘　　要：针对油气田阳离子型咪唑啉类缓蚀剂与阴离子型阻垢剂配伍性较差的问题,以有机酸和三乙烯四胺为反应原料合成了咪唑啉,在n(咪唑啉)∶n(CS_2)∶n(NaOH)为1∶1∶1、乙醇为溶剂、温度为60℃条件下反应2 h,得到水溶性的阴离子缓蚀剂,并考察了该缓蚀剂的缓蚀性能及其与阻垢剂的配伍性。研究结果表明,在含盐25%、温度60℃、压力为0.5 MPa的腐蚀介质中,该缓蚀剂加药质量浓度为50 mg/L时,24 h内对A3碳钢的缓蚀率>92%,与阴离子阻垢剂的配伍性良好。To solve the problem of comparatively poor compatibility of cationic imidazoline corrosion inhibitor and anionic scale inhibitor appeared in the gas-oil field, imidazoline has been synthesized by using organic acid and triethylenetetramine as reaction raw materials. The water soluble anionic corrosion inhibitor can be obtained under the following conditions ： n （imidazoline） ：n （CS2） ：n （NaOH）= 1： 1： 1, ethanol as solvent, temperature 60 ~C, and reaction time 2 hours. The corrosion capacity of the corrosion inhibitor and its compatibility with scale inhibitor are investigated. The research results show that when the mass concentration of the dosed corrosion inhibitor is 50 mg/L, salt content 25%, pressure 0.5 MPa in corrosion media, and within 24 hours, the corrosion inhibiting rate of A3 carbon steel is higher than 92%. It has good compatibility with the anionic scale inhibitor.

关 键 词：硫代氨基咪唑啉盐 缓蚀剂 配伍性 水溶性 

分 类 号：TG174[金属学及工艺—金属表面处理]