Patent ID: 9662609
Date: 2017-05-30
CPC Classifications: B01D,C10L,Y02C

Claim:
1. A process for removing compounds from a natural gas stream to provide a feed stream for a membrane separation unit, the process comprising: removing heat from a wet feed stream to provide a cooled wet feed stream; separating water and heavy hydrocarbons from the cooled wet feed stream to provide a cleaned feed stream; and, removing heat from the cleaned feed stream to provide a cooled cleaned feed stream, wherein heat is removed from the cleaned feed stream by a cooling stream having a temperature below a hydrate formation temperature for the wet feed stream, and wherein the cooled cleaned feed stream is used to remove heat from the wet feed stream; and separating carbon dioxide from the cooled cleaned feed stream in a membrane separation unit to provide a carbon dioxide lean stream; wherein the carbon dioxide lean stream comprise the cooling stream.