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MIXED REFRIGERANT DISTRIBUTED CHILLING SCHEME

  • US 20170067684A1
  • Filed: 09/02/2016
  • Published: 03/09/2017
  • Est. Priority Date: 09/09/2015
  • Status: Active Grant
First Claim
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1. A process for producing liquid methane gas (LNG) in an LNG liquefaction plant, the process comprising:

  • (a) cooling a condensed mixed refrigerant and a heat transfer stream via indirect heat exchange with an expanded mixed refrigerant to thereby form a cooled mixed refrigerant, a cooled heat transfer stream, and a warmed mixed refrigerant; and

    (b) performing at least one of the following;

    (i) cooling a feed gas with the cooled heat transfer stream prior to introducing the feed gas into a dehydration unit;

    (ii) cooling the inlet air stream of a turbine with the cooled heat transfer stream;

    or(iii) routing the cooled heat transfer stream to other cooling processes in the LNG liquefaction plant to thereby increase plant efficiency, capacity, or product purity.

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