摘要
CO2-H2S腐蚀一直是石油工业的一个棘手问题和研究热点。CO2-H2S腐蚀引起的设备和管道腐蚀失效,造成了巨大的经济损失以及严重的社会后果,所以开展抑制CO2-H2S腐蚀的研究具有深远的经济和社会效应。而咪唑啉类缓蚀剂具有优良的缓蚀性能,随着缓蚀剂质量浓度增加,缓蚀率增加,当N-烷基苯并咪唑啉阳离子缓蚀剂质量浓度为50 mg/L时,缓蚀率达到97.15%。近年,针对CO2-H2S腐蚀问题,采用咪唑啉缓蚀剂处理的研究较多,通过金属与酸性介质接触在其表面形成单分子吸附膜,从而降低其电位达到缓蚀的目的。文中对新型咪唑啉类缓蚀剂(季铵盐、酰胺基、硫脲基、苯并和膦酰胺味唑啉类缓蚀剂)的缓蚀机理以及研究现状作了详尽的概述。
CO2/H2 S corrosion is a difficult problem and a hot R ＆ D subject in petrochemical industry. The corrosion failure of equipment and pipelines caused by CO2/H2S corrosion will result in not only a great economic loss but also a serious social consequence. Therefore, it is economically and socially beneficial to perform R ＆ D on CO2/H2S corrosion. Imidazoline corrosion inhibitor offers excellent corrosion inhibition performance. The corrosion inhibition rate increases with increasing mass concentration of the corrosion inhibitor. When N -alkyl benzimidazoline inhibitor is added at a dosage of 50 mg/L （mass）, the corrosion inhibition rate is as high as 97. 15%. In recent years＂ study on treatment of COJH2S corrosion with imidazoline corrosion inhibitor, the acidic media is contacted with metal to form single - molecule absorption membrane on the surface to change the reduction potential of hydrogen ions and complex the oxidants in the solution so as to reduce the potential and inhibit the corrosion. The corrosion inhibition mechanism and research work of imidazoline corrosion inhibitors （i. e. quaternary ammonium, amido, thioureio, benzo and phosphono imidaxolines） are described in detail.
出处
《石油化工腐蚀与防护》
CAS
2012年第1期1-5,共5页
Corrosion & Protection In Petrochemical Industry
关键词
CO2-H2S腐蚀咪唑啉类缓蚀剂缓蚀机理研究现状
CO2/H2S corrosion, imidazoline corrosion inhibitor, corrosion inhibition mechanism, R ＆ D status- quo
