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TitleCorrosion behaviors of carbon steels and cr-bearing steels in supercritical CO2
AuthorLi, K; Zeng, YORCID logo
Source 172686, 2021 p. 10-17,
Alt SeriesNatural Resources Canada, Contribution Series 20210574
PublisherAssociation for Iron and Steel Technology, AISTECH
MeetingSteel Properties and Applications in Conjunction with Materials Science and Technology 2021; Columbus; US; October 17-20, 2021
Mediapaper; on-line; digital
File formatpdf
SubjectsScience and Technology; metallic minerals; corrosion; carbon; Steel
Illustrationsphotographs; photomicrographs; charts; graphs
ProgramCanmetMATERIALS Materials Assessment
Released2021 10 17
AbstractDespite the efforts that have been made to develop novel technologies generating clean and renewable energy during the past years, fossil fuel combustion will still be the major source of energy supply in the near future. The combustion of fossil fuel will generate lots of CO2, which is the primary source of climate change and global warming. To deal with this situation and ensure the sustainable development of human being, carbon capture and storage (CCS) has been proposed and developed rapidly to control the CO2 emission while retaining the core values of fossil fuel power plants. During the CCS technology, long-distance transportation of CO2 from power plants to storage sites is usually achieved by the pipeline network, which could deliver large amounts of CO2 at a relatively low expense. During the transportation, the captured CO2 streams are usually compressed into the supercritical state (supercritical CO2, short as s-CO2) to increase the efficiency.
Summary(Plain Language Summary, not published)
To control greenhouse gas emission, huge amounts of CO2 generated at thermal power plants needs to be captured and transported to specific sites for permanent storage or further utilization. During long distance pipeline transportation, small amounts of impurities (like SO2, O2, H2O, etc.) always present in the transported supercritical CO2 streams and likely cause severe corrosion damage to the pipeline integrity. The results in this study show that the moderate addition of alloying element Cr (2 wt.%) into conventional pipeline steels can lead to the formation of protective corrosion layer on the steels to effectively resist the environmental attack. It provides a valuable information on the selection and further development of supercritical CO2 pipeline steels.

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