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Thermodynamic Analysis of Refrigerant Systems for Ethane Recovery and Helium Extraction in Medium-Pressure Natural Gas Processing

Author

Listed:
  • Hong Jiang

    (Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China)

  • Wentang Huang

    (Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China)

  • Xiang Cheng

    (Southwest Branch of PetroChina Engineering and Construction Company Limited, Chengdu 610041, China)

Abstract

Based on the medium-pressure natural gas ethane recovery and helium extraction process, this paper proposes three different refrigerant Schemes. Thermodynamic analysis and adaptability evaluation of the three Schemes were conducted using Aspen HYSYS V12 software. The ethylene–propane cascade refrigeration Scheme demonstrated superior energy efficiency in terms of comprehensive energy consumption, heat exchange performance in the cryogenic cold box, and exergy analysis. Adaptability analysis indicated that this Scheme exhibits strong tolerance to variations in feed gas temperature as well as N 2 and CO 2 content. The ethylene–propane cascade refrigeration process demonstrates significant energy-saving advantages and exhibits robust operational performance.

Suggested Citation

  • Hong Jiang & Wentang Huang & Xiang Cheng, 2025. "Thermodynamic Analysis of Refrigerant Systems for Ethane Recovery and Helium Extraction in Medium-Pressure Natural Gas Processing," Energies, MDPI, vol. 18(13), pages 1-17, June.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:13:p:3406-:d:1689746
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