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    碳封存超临界CO2环境中管道的腐蚀

    Corrosion of Pipelines in Supercritical CO2 Environment during Carbon Sequestration

    • 摘要: 碳捕集与封存(CCS)技术对降低全球二氧化碳排放量至关重要,也是实现我国长期绿色低碳发展的必然选择和重要举措。然而在CCS实施过程,管道与注入井由于处于超临界二氧化碳(SC-CO2)环境而发生严重的腐蚀,如何有效地进行防腐蚀成为了亟待解决的问题。综述了SC-CO2环境中管道设备腐蚀的研究进展,重点介绍了不同因素(含水量、矿化度、温度、压力、流速、管材等)对腐蚀速率、腐蚀产物的影响,以及适用于SC-CO2环境的防腐蚀方法。

       

      Abstract: Carbon capture and storage (CCS) technology is crucial for reducing global CO2 emissions and represents an essential pathway for achieving long-term green and low-carbon development in China. However, during CCS operations, pipelines and injection wells are exposed to supercritical CO2 (SC-CO2) environments, leading to severe corrosion issues. Effectively mitigating this corrosion has become an urgent challenge. This review summarizes recent research progress on the corrosion of pipeline equipment in SC-CO2 environments, with a focus on the influence of various factors such as water content, salinity, temperature, pressure, flow velocity, and pipe material on corrosion rates and corrosion products. Additionally, corrosion protection methods suitable for SC-CO2 conditions are discussed.

       

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