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Advances in refrigeration for air separation: using mixed refrigerant cycles to reduce cost and improve efficiency.

Author(s) : BONAQUIST D. P., PROSSER N. M., ARMAN B.

Summary

Because of low specific energy requirements, vapour-compression using mixed hydrocarbons as the working fluid is the dominant refrigeration technology for natural gas liquefaction. Yet, vapour-compression cycles are not commonly employed in modern atmospheric gas production facilities, except for high level chilling of feed air. The paper reports on step changes in cost and efficiency demonstrated as a result of integrating mixed refrigerant vapour-compression cycles with air separation and liquefaction processes. Oxygen compatibility of refrigerant mixtures, freezing point depression and thermo-physical property prediction are addressed. Finally, the authors highlight information on two large-scale commercial atmospheric gas installations using mixed refrigerants to reduce capital cost and refrigeration energy. The cost, performance and operability of these facilities are compared with conventional technology.

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Details

  • Original title: Advances in refrigeration for air separation: using mixed refrigerant cycles to reduce cost and improve efficiency.
  • Record ID : 2004-2641
  • Languages: English
  • Subject: Figures, economy
  • Source: 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
  • Publication date: 2003/08/17

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