Patent ID: 8282707
Filing Date: 2012-10-09
Classification: B01D,C10L,Y02C

Abstract:
1. A process of treating a natural gas stream comprising: a) sending said natural gas stream to a ship, barge or platform; b) then sending said natural gas stream to a membrane unit on said ship, barge or platform to remove carbon dioxide and other impurities from said natural gas stream to produce a permeate stream comprising a higher concentration of said carbon dioxide and other impurities and a residue stream comprising a partially purified natural gas stream that has a lower concentration of said carbon dioxide and other impurities; c) then sending said partially purified natural gas stream to a solvent based absorption unit to remove carbon dioxide and additional sulfur containing impurities to produce a purified natural gas stream; and d) then sending said purified natural gas stream to an adsorbent bed to remove water vapor from said purified natural gas stream prior to liquefaction of said natural gas stream.