Patent ID: 9074815
Filing Date: 2015-07-07
Classification: C10L,F25J

Abstract:
1. A process for recovery of natural gas liquids, comprising: fractionating a gas stream comprising nitrogen, methane, ethane, and propane and other C separating the light fraction into at least three fractions, including an overheads fraction enriched in nitrogen, a bottoms fraction depleted in nitrogen, and a side draw fraction of intermediate nitrogen content, in a first separator; separating the nitrogen-depleted fraction into a propane-enriched fraction and a propane-depleted fraction in a second separator; feeding at least a portion of the propane-enriched fraction to the fractionator as a reflux; recycling a portion of the propane-depleted fraction to the first separator; and withdrawing a portion of the propane-depleted fraction as a natural gas liquids product stream.