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Low pressure ngl plant cofigurations

  • US 20050255012A1
  • Filed: 08/15/2002
  • Published: 11/17/2005
  • Est. Priority Date: 08/15/2002
  • Status: Active Grant
First Claim
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1. A natural gas liquid plant, comprising:

  • a separator that separates a cooled low pressure feed gas into a liquid portion and a vapor portion, wherein the liquid portion is reduced in pressure in a first pressure reduction device, thereby providing refrigeration for a first cooler that cools a low pressure feed gas thereby forming the cooled low pressure feed gas;

    wherein at least part of the vapor portion is cooled in a second cooler and reduced in pressure in a second pressure reduction device before entering an absorber as lean absorber reflux; and

    wherein the absorber produces an absorber overhead product that provides refrigeration for the second cooler, and wherein the absorber produces an absorber bottoms product that is fed into a demethanizer as lean reflux.

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