摘要
将合成的环己胺丙炔醇曼尼希碱季铵盐和咪唑啉分别应用于H_(2)S/CO_(2)饱和模拟溶液中,采用静态失重法研究其在60℃、48 h条件下对N80钢的缓蚀性能。试验结果表明环己胺丙炔醇曼尼希碱季铵盐能够有效抑制H_(2)S/CO_(2)饱和模拟溶液对N80钢的腐蚀,当其浓度为200 mg/L,缓蚀效率为88.9%。咪唑啉也能有效抑制H_(2)S/CO_(2)饱和模拟溶液对N80钢的腐蚀,当咪唑啉加入量为200 mg/L,缓蚀效率为83.6%。将环己胺丙炔醇曼尼希碱季铵盐和咪唑啉以1.5∶1的比例复配成混合型缓蚀剂,在相同的浓度下缓蚀效率高达99.4%,证明环己胺丙炔醇曼尼希碱季铵盐和咪唑啉具有良好的协同效应,也说明该混合型缓蚀剂具有优异的缓蚀性能。
The synthetic Mannich base quaternary ammonium salt of cyclohexylamine propargyl alcohol and imidazoline were applied as corrosion inhibitor,under H_(2)S/CO_(2) coexistence condition.By the way of weight loss method,the corrosion inhibition properties of the mannich base and imidazoline to N80 steel was studied at the temperature of 60℃for 48 hours as well as in H_(2)S/CO_(2) coexistence conditions.The results showed that the mannich base and imidazoline achieved the best results corresponding to the corrosion inhibition efficiency of 88.9%and 83.6%individuality,when the concentration of corrosion inhibition was 200 mg/L.Added the same amount of the mixed inhibitor with a ratio of 1.5 to 1 to corrosive solution,the corrosion inhibition efficiency is 99.4%,which shows better corrosion inhibition efficiency than the single inhibition.In one words,the mixed inhibitor with excellent synergistic effect offered the best corrosion inhibition performance.
作者
贺波
董宪鹏
王远
田峰
HE Bo;DONG Xianpeng;WANG Yuan;TIAN Feng(CNPC Tubular Goods Research Institute,Xi′an,Shaanxi 710077,China;No.5 Oil Production Plant of Changqing Oilfield Company of PetroChina,Xi′an,Shaanxi 710201,China)
出处
《石油管材与仪器》
2021年第1期59-62,共4页
Petroleum Tubular Goods & Instruments
