Understanding Corrosion in Supercritical CO2 Environments: The Impact of Impurities on Steel Performance - CANCELLED (C2026-00247)
CANCELLED
Interested in reading the entire paper? Click on the "Paper" button below to read on the AMPP Knowledge Hub!
*Please note, if your registration came with access to the conference proceedings don't forget to login to your AMPP Knowledge Hub account to access the paper for free. If you login and don't have access to the paper, you can purchase the individual paper or purchase the entire conference proceedings on your Knowledge Hub account.
The implementation of Carbon Capture, Utilization, and Storage (CCUS) technologies involves the transport and permanent sequestration of highly dense supercritical CO2 (s-CO2). The presence of aggressive impurities and varying operational conditions in these environments can cause significant corrosion, presenting a major challenge for the advancement of CCUS technologies. This study examines the influence of impurity levels, water content, and operating conditions on the corrosion behavior of X65, X80, and X100 carbon steels in different s-CO2 environments relevant to pipeline transportation. An s-CO2 loop testing facility was specifically designed to replicate dynamic corrosion conditions at 45 °C and 8 MPa. Preliminary findings reveal that increased flow rates result in a slight increase in corrosion rates in water-saturated s-CO2 environments. Detailed microscopic characterization and corrosion mechanisms have been analyzed and discussed. This research aims to offer a thorough understanding of how operating conditions and impurity concentrations affect corrosion, and how these findings compare with static autoclave test results. These insights are essential for accurately predicting corrosion rates under realistic operational conditions, thereby enhancing the reliability and durability of s-CO2 transportation pipelines.
