About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Steels for Sustainable Development
|
| Presentation Title |
F-3: Suitability of 17-4 PH Stainless Steels as Choice Material for Compression Pumps Used in CCS (Carbon Capture And Storage) Systems |
| Author(s) |
José Wilmar Calderón Hernandez, Caruline De Souza Carvalho Machado, Hercílio Gomes de Melo , Helio Goldenstein |
| On-Site Speaker (Planned) |
Helio Goldenstein |
| Abstract Scope |
Carbon capture and storage (CCS) technologies can decrease the greenhouse gases emissions. Compression pumps for moving and pressurizing the captured CO2 requires high strength and elevated corrosion resistance due as-captured CO2 is not pure, usually containing residual water and small amounts of NOx and SOx contaminants, which can form a liquid phase containing sulfuric and nitric acid. Therefore, it is important to create a materials database for these environments. In this study, the corrosion resistance of wrought 17-4PH stainless steel was investigated in CO2 saturated aqueous solution with and without acid addition (HNO3 and H2SO4). The same experiments are being repeated using additive manufactured samples. Weight-loss experiments showed that HNO3 addition has a negligible effect on corrosion resistance of 17-4PH, unlike H2SO4 addition, which increased significantly the corrosion rate of steel. However, electrochemical results showed that samples in H2SO4 reaching the same impedance of samples in HNO3 after 24 hours. |