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Method and Apparatus for Cooling in Liquefaction Process

  • US 20150192358A1
  • Filed: 07/08/2013
  • Published: 07/09/2015
  • Est. Priority Date: 07/06/2012
  • Status: Abandoned Application
First Claim
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1. A cryogenic liquefaction device comprising:

  • a heat exchanger;

    a first phase separator;

    a first expansion device;

    a first expansion turbine;

    a second expansion turbine;

    a cold recovery circuit including a heat transfer fluid; and

    an arrangement of conduits, wherein;

    the operating inlet pressures of the first and second expansion turbines are different from one another; and

    the arrangement of conduits is arranged such that;

    a first portion of a pressurised stream of gas is directed through the heat exchanger, the first expansion device and the first phase separator;

    a second portion of the pressurised stream of gas is directed through the first expansion turbine, then through the heat exchanger in a counter-flow direction to the first portion of the pressurised stream of gas, and then through the second expansion turbine, andthe heat transfer fluid is directed through the heat exchanger.

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