Carbon capture, utilization and storage (CCUS) pipeline steel corrosion failure analysis: A review

Carbon Capture, Utilization and Storage (CCUS) technology has been identified as a viable method of reducing greenhouse gas emissions in the environment. A full CCUS system necessitates the safe and dependable transportation of CO2 from the collecting point to the utilization and storage site. The corrosion failure concerns of the CO2 capture system, transport system, and utilization and storage system are discussed in this study. The relevant parameters affecting corrosion and their mechanisms of action are presented, and the corrosion control and research prospects are discussed. In CO2 capture systems, temperature, oxygen and heat-stabilized salts from organic amines can all have an impact on the corrosion of steel. In CO2 transport system, it is usually transported by pipeline, and the factors that affect the corrosion of CO2 transport pipeline include water content, gas contaminants, pressure, etc. CO2 is mostly employed for tertiary oil recovery (CO2-EOR) in the utilization and storage system, hence corrosion of CO2-driven recovery wells is primarily impacted by Cl- and CO2 gas in the oilfield recovery water solution. Finally, further CO2 corrosion failure research in the CCUS process is anticipated: the breakdown of organic amines can accomplish the effect of corrosion inhibitor, but whether its residues impact the downstream pipeline must be evaluated experimentally. The coupling effect of multiple gas impurities and its mechanism needs further study. Microbial corrosion may also exist in the recovery wells, and whether there is a synergistic effect between CO2 and microorganisms is still unclear.