化工进展 ›› 2021, Vol. 40 ›› Issue (11): 6305-6314.DOI: 10.16085/j.issn.1000-6613.2020-2339

• 精细化工 • 上一篇    下一篇

CO2腐蚀及其缓蚀剂应用研究进展

刘畅1(), 陈旭1(), 杨江2,3()   

  1. 1.辽宁石油化工大学石油天然气工程学院,辽宁 抚顺 113001
    2.辽宁石油化工大学石油化工学院,辽宁 抚顺 113001
    3.西安石油大学石油工程学院,陕西 西安 710065
  • 收稿日期:2020-11-23 修回日期:2021-02-19 出版日期:2021-11-05 发布日期:2021-11-19
  • 通讯作者: 陈旭,杨江
  • 作者简介:刘畅(1997—),女,硕士研究生,研究方向为缓蚀剂开发与应用。E-mail:1142338794@qq.com
  • 基金资助:
    教育部“春晖计划”国际合作项目;辽宁省“兴辽英才计划”(XLYC1902053)

Corrosion inhibitors and its application in CO2 corrosion

LIU Chang1(), CHEN Xu1(), YANG Jiang2,3()   

  1. 1.School of Oil and Gas Engineering, Liaoning Shihua University, Fushun 113001, Liaoning, China
    2.School of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, Liaoning, China
    3.College of Petroleum Engineering, Xi’an Petroleum University, Xi’an 710065, Shaanxi, China
  • Received:2020-11-23 Revised:2021-02-19 Online:2021-11-05 Published:2021-11-19
  • Contact: CHEN Xu,YANG Jiang

摘要:

总结了CO2腐蚀机理,分析了温度、CO2分压力、pH、介质成分等因素对CO2腐蚀的影响。介绍了目前应用较为广泛的咪唑啉衍生物、表面活性剂、季铵盐、有机胺等几类抑制CO2腐蚀的缓蚀剂。详细阐述了几类常见缓蚀剂在CO2腐蚀方面的应用及其作用机理。其中大部分缓蚀剂是通过物理吸附与化学吸附共同作用于活性位点进而达到缓蚀作用,指出了部分缓蚀剂的应用局限性。通常两种或多种缓蚀剂复配后效果或好于单一缓蚀剂,但单一组分发挥的作用难以测量。咪唑啉类缓蚀剂常作为CO2腐蚀环境中复配缓蚀剂组分之一,文中对其与其他缓蚀剂的协同增效作用进行了分析归纳。最后对CO2腐蚀以及抗CO2腐蚀缓蚀剂未来的研究方向提出展望。

关键词: 二氧化碳腐蚀, 影响因素, 缓蚀剂, 咪唑啉, 协同增效

Abstract:

The CO2 corrosion mechanism was summarized and the influences of temperature, CO2 partial pressure, pH and medium composition on CO2 corrosion were analyzed. The corrosion inhibitors widely used to inhibit CO2 corrosion such as imidazoline derivatives, surfactants, quaternary ammonium salts and organic amines were reviewed. The application and mechanism of several common corrosion inhibitors in CO2 corrosion were described in detail. Most of the corrosion inhibitors acted on the active sites by physical adsorption and chemical adsorption, and the limitations of some corrosion inhibitors were pointed out. Usually the combined effect of two or more corrosion inhibitors was better than a single corrosion inhibitor, however, the role of a single component was difficult to measure. Imidazoline corrosion inhibitor was often used as one of the components of compound corrosion inhibitors in CO2 corrosive environment, and the synergistic effect of imidazoline and other corrosion inhibitors was analyzed. Finally, the future research directions of CO2 corrosion and CO2 corrosion inhibitors were prospected.

Key words: carbon dioxide corrosion, influencing factors, corrosion inhibitor, imidazoline, synergistic effect

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