新型硫脲衍生物在高矿化度饱和CO_(2)盐水中对碳钢的缓蚀作用  

Corrosion Inhibition of A New Thiourea Derivative Toward Carbon Steel in Highly-mineralized CO_(2)-Saturated Brine

作　　者：吴一新 孙飞 Wu Yixin;Sun Fei(SINOPEC Research Institute of Petroleum Processing Co.,Ltd,Beijing 100083)

机构地区：[1]中国石化石油化工科学研究院有限公司,北京100083

出　　处：《石化技术》2023年第5期1-4,共4页Petrochemical Industry Technology

基　　金：国家自然科学基金项目(U20A20154)。

摘　　要：通过腐蚀失重法、动电位扫描法,研究了新型硫脲衍生物TD在高矿化度饱和CO_(2)盐水中对20#碳钢的缓蚀效果。结果表明,TD热稳定性好,具有良好的缓蚀作用,在20#碳钢表面的吸附是强作用的化学吸附。当使用浓度为20 mg/L时,缓蚀率可达94%,是一种抑制阳极腐蚀的吸附膜型缓蚀剂。The corrosion inhibition property of a new thiourea derivative TD toward carbon steel in simulative highly-mineralized CO_(2)-saturated brine was studied through weight-loss measurement and potentiodynamic technique.TD is thermostable below 150 oC.It exhibits effective protection of carbon steel in the corrosive brine,with its intensive chemisorption on the metal surface.The inhibition efficiency exceeds 94%when the dosage reaches 20 mg/L.Electrochemical study shows TD is an adsorptive inhibitor which can inhibit the anodic reaction.

关 键 词：硫脲衍生物 高矿化度饱和CO_(2)盐水 缓蚀性能 腐蚀失重法 

分 类 号：TE980[石油与天然气工程—石油机械设备]