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INTEGRALLY-GEARED COMPRESSORS FOR PRECOOLING IN LNG APPLICATIONS

  • US 20160040927A1
  • Filed: 04/03/2014
  • Published: 02/11/2016
  • Est. Priority Date: 04/04/2013
  • Status: Abandoned Application
First Claim
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1. A natural gas liquefaction system comprising:

  • at least a pre-cooling loop, through which a first refrigerant is adapted to circulate, the pre-cooling loop comprising;

    at least one compressor for pressurizing the first refrigerant;

    at least one prime mover for driving said compressor;

    at least one condenser for removing heat from the first refrigerant;

    at least a first expansion element for expanding the first refrigerant;

    at least a first heat exchanger for transferring heat from natural gas to the first refrigerant;

    and at least a cooling loop, downstream of said pre-cooling loop, where through a second refrigerant circulates, the natural gas being adapted to be sequentially cooled in the pre-cooling loop and in the cooling loop;

    wherein said compressor is an integrally-geared turbo-compressor comprising a plurality of compressor stages each one being provided with independent set of movable inlet guide vanes for autonomously regulating flows entering in the compressor stages.

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