Research Progress of Carbon Dioxide Transport Characteristics and Corrosion Behavior of Transport Pipes

Carbon capture, utilization and storage (CCUS) technology is the most effective and economical method to achieve China's dual carbon goals and mitigate global warming. The importance of CO₂ pipeline transportation as an intermediate link between capture, storage, and utilization in terrestrial CCUS projects is self-evident. The current CO₂ pipeline construction projects in China, the phase state of pure CO₂, CO₂ corrosion mechanism, supercritical CO₂ transport pipes and their corrosion status are reviewed. The effects of impurities on the phase state, properties and corrosion mechanism of CO₂ are collated. Finally, the urgent problems and research prospects in China in terms of CO₂ transport characteristics and corrosion behavior of its transport pipes are presented.