Abstract
► Different flue gas acids show different behaviors in supercritical CO 2 . ► Sulfuric acid does not diffuse into supercritical CO 2 to cause corrosion. ► Nitric acid is reactive and leads to severe materials losses. ► Hydrochloric acid is very reactive even towards high alloyed stainless steel. Carbon capture and storage (CCS) includes processing of supercritical carbon dioxide (scCO 2 ). The carbon dioxide (CO 2 ) stemming from flue gases contains acid forming impurities, especially in the case of coal fired power plants. In the present work, the mobility and reactivity of acids in supercritical scCO 2 was investigated. The corrosive attack of low alloyed carbon steel (material 1.0484) by water (H 2 O) alone in scCO 2 was negligible. Nitric acid (HNO 3 ) was very mobile and corrosive towards the carbon steel while sulfuric acid did not migrate through the scCO 2 to react with the steel surface. Hydrochloric acid in scCO 2 was very mobile and reactive towards both carbon steel and high alloyed test equipment. Gravimetric analyses revealed a severe material loss after corrosion in the presence of HNO 3 . Thickness measurements showed localized material losses.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
