超临界二氧化碳输送管道内腐蚀研究进展  

Research Progress on the Corrosion of the Inner Surface of Pipeline Used for Transporting Supercritical Carbon Dioxide

作　　者：高怡萱 潘杰 李焰[2] 张建 李阳[3] GAO Yixuan;PAN Jie;LI Yan;ZHANG Jian;LI Yang(SINOPEC Petroleum Engineering Corporation,Dongying 257000,Shandong,China;School of Materials Science and Engineering,China University of Petroleum(East China),Qingdao 266580,Shandong,China;SINOPEC Key Lab of Carbon Capture,Utilization and Storage(CCUS),Dongying 257000,Shandong,China)

机构地区：[1]中石化石油工程设计有限公司,山东东营257000 [2]中国石油大学(华东)材料科学与工程学院,山东青岛266580 [3]中国石化碳捕集、利用与封存(CCUS)重点实验室,山东东营257000

出　　处：《材料导报》2024年第12期180-187,共8页Materials Reports

基　　金：中国工程院战略研究与咨询项目。

摘　　要：碳捕集、利用与封存技术(CCUS)是目前实现化石能源低碳化利用和碳中和的关键途径。随着CCUS技术的不断发展,超临界二氧化碳(CO_(2))输送管道的内腐蚀问题势必成为影响输碳管道工程安全运维的痛点之一。管线钢在超临界CO_(2)环境中的腐蚀行为和机理与传统油气田CO_(2)腐蚀有着较大不同,是一种在全新环境体系下的腐蚀问题。本文以水相介质导致超临界CO_(2)管道内腐蚀这一主要诱因为线索,综述了杂质、温度、压力以及流速等因素对典型管线钢在超临界工况下的CO_(2)内腐蚀行为的影响,尤其针对含水量这一关键因素进行了详述和对比,分析了当前超临界CO_(2)管输过程中仍然存在的腐蚀与防护问题以及挑战,最后对超临界CO_(2)腐蚀问题未来的重点关注方向进行了展望,结论有助于优化未来输碳管道工程设计与制定对应的腐蚀控制方法。Carbon capture,utilization and storage(CCUS)is a key method to achieve low carbon utilization and carbon neutrality of fossil energy.With the continuous development of CCUS technology,the internal corrosion problem of supercritical carbon dioxide(CO_(2))transportation pipeline has gradually become one of the key pain points affecting the safe operation of CO_(2)transportation pipeline.The corrosion behavior and mechanism of pipeline steel in supercritical CO_(2)medium are quite different from that of traditional CO_(2)corrosion happened in oil&gas environment,which is a bran-new corrosion problem research system.This paper reviews the influence of impurities,temperature,pressure and flow rate on the CO_(2)internal corrosion behavior of typical pipeline steels under supercritical conditions and the main incentive of supercritical CO_(2)pipeline corrosion caused by aqueous medium is taken as a clue.The water content is detailly discussed and compared especially.Generally,the future focus on the supercritical CO_(2)corrosion issues is prospected.The challenges that still exist in the current supercritical CO_(2)pipeline transportation process are analyzed as well.The conclusions are helpful to guide the design optimization of future carbon pipeline engineering and develop corresponding corrosion control methods.

关 键 词：超临界二氧化碳 管线钢 腐蚀 

分 类 号：TG178[金属学及工艺—金属表面处理]