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Cryogenic refrigeration cycle for reliquefaction of LNG boil-off gas.

Author(s) : MOON J. W., LEE Y. P., JIN Y. W., et al.

Summary

The development of the liquefaction process for liquefied natural gas boil-off re-liquefaction plants is addressed to provide an environmentally friendly and cost effective solution for gas transport. Numerical methods were used for the Claude and the Kaptiza refrigeration cycles. It was found that the Kaptiza refrigeration cycle is more efficient for the liquid natural gas boil-off gas re-liquefaction plant than the Claude cycle in plant operability and cost. The effect of the outlet temperature of the boil-off gas condenser for the nitrogen cycle, and the ratio of expanded mass through turboexpander to the total flow rate mass on the system efficiency of selected LNG boil-off reliquefaction cycle is also delineated here. As a result, the unique optimum value for the ratio of expanded mass through the turboexpander to the total mass flow rate was found to exist.

Details

  • Original title: Cryogenic refrigeration cycle for reliquefaction of LNG boil-off gas.
  • Record ID : 2008-2403
  • Languages: English
  • Publication date: 2006/06/14
  • Source: Source: Proc. 14th int. Cryocooler Conf., Annapolis, MD
    629-635; fig.; tabl.; 5 ref.

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