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Effect of H 2 O Content on the Corrosion Behavior of X52 Steel in Supercritical CO 2 Streams Containing O 2 , H 2 S, SO 2 and NO 2 Impurities

Author

Listed:
  • Jia Liu

    (China Petroleum Pipeline Engineering Corporation, Langfang 065000, China)

  • Dengzun Yao

    (China Petroleum Pipeline Research Institute Co., Ltd., Langfang 065000, China)

  • Kai Chen

    (China Petroleum Pipeline Engineering Corporation, Langfang 065000, China)

  • Chao Wang

    (China Petroleum Pipeline Research Institute Co., Ltd., Langfang 065000, China)

  • Chong Sun

    (School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China)

  • Huailiang Pan

    (China Petroleum Pipeline Engineering Corporation, Langfang 065000, China)

  • Fanpeng Meng

    (China Petroleum Pipeline Engineering Corporation, Langfang 065000, China)

  • Bin Chen

    (China Petroleum Pipeline No.2 Engineering Company, Xuzhou 221000, China)

  • Lili Wang

    (China Petroleum Pipeline Engineering Corporation, Langfang 065000, China)

Abstract

In this study, the corrosion behavior of X52 pipeline steel affected by H 2 O content in supercritical CO 2 streams containing O 2 , H 2 S, SO 2 and NO 2 impurities was investigated by the weight loss test and surface characterization. The corrosion differences of the steel in impure supercritical CO 2 streams containing different H 2 O contents were analyzed. The influence of the variation of H 2 O content on the corrosion mechanism of steel in the complex impurity-containing supercritical CO 2 streams was discussed. The results show that the H 2 O content limit is 100 ppmv in supercritical CO 2 streams containing 200 ppmv O 2 , 200 ppmv H 2 S, 200 ppmv SO 2 and 200 ppmv NO 2 at 10 MPa and 50 °C. The impurities and their interactions significantly promote the formation of corrosive aqueous phase, thereby exacerbating the corrosion of X52 steel. The corrosion process of X52 steel in the environment with a low H 2 O content is controlled by the products of impurity reactions, whereas the impurities and the products of impurity reactions jointly control the corrosion process of the steel in the environment with a high H 2 O content.

Suggested Citation

  • Jia Liu & Dengzun Yao & Kai Chen & Chao Wang & Chong Sun & Huailiang Pan & Fanpeng Meng & Bin Chen & Lili Wang, 2023. "Effect of H 2 O Content on the Corrosion Behavior of X52 Steel in Supercritical CO 2 Streams Containing O 2 , H 2 S, SO 2 and NO 2 Impurities," Energies, MDPI, vol. 16(17), pages 1-13, August.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:17:p:6119-:d:1222668
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