高温高压二氧化碳介质中改性咪唑啉的缓蚀行为  

Corrosion Inhibition of Modified Imidazoline in CO_2 Medium with High Pressure and High Temperature

作　　者：王观军[1] 何金杯[2] 刘晶姝[1] 付朝阳[2] 

机构地区：[1]中国石化胜利油田分公司技术检测中心,东营257000 [2]华中科技大学化学与化工学院,武汉430074

出　　处：《腐蚀与防护》2012年第1期36-37,63,共3页Corrosion & Protection

摘　　要：利用脂肪酸与多胺合成咪唑啉,对咪唑啉进行改性得到一种新型含硫磷的咪唑啉类缓蚀剂HGY-T。通过高温高压动态测试和电化学方法研究了HGY-T在温度为80℃,CO2分压为1MPa高矿化度的模拟油田水中的缓蚀性能。结果表明,在高温高压二氧化碳介质中,50mg/L的缓蚀剂就有很好的缓蚀性能,腐蚀速率低于0.076mm/a,缓蚀率达到95%。该缓蚀剂为阳极型缓蚀剂,遵循Frumkin吸附等温式。A new kind of modified imidazoline corrosion inhibitor containing sulfur and phosphor was synthesized using fatty acid and polyamine. The inhibition effect of modified imidazoline HGYT was investigated using autoclabe and electrochemical method in simulated well producing water saturated with 1 MPa COe at 80 （7. The resuhs showed that in the medium with high pressure and high temperature CO2, the corrosion rate of steel was less than 0. 076 mm/a with adding 50 mg/L inhibitor. The modified imidazoline is an anodic inhibitor and obeys the Frumkin adsorption isothermal equation.

关 键 词：缓蚀剂 改性咪唑啉 高温高压 CO2 

分 类 号：TG172.6[金属学及工艺—金属表面处理]