04857078 is referenced by 62 patents and cites 17 patents.

A process for separating ethane and other higher hydrocarbons from a natural or produced gas stream, having methane as its major constituent. A rubbery permselective membrane, having a propane/methane selectivity of 8 or above, is contacted on its feed side with a gas mixture typically containing methane, ethane, propane, butane, and small amounts of other hydrocarbons, water vapor, hydrogen sulfide and carbon dioxide. Carbon dioxide, water vapor, ethane and the other higher hydrocarbons permeate preferentially through the membrane, and the retentate stream is correspondingly enriched in methane.

Title
Process for separating higher hydrocarbons from natural or produced gas streams
Application Number
7/139914
Publication Number
4857078
Application Date
December 31, 1987
Publication Date
August 15, 1989
Inventor
Kenneth G Watler
Houston
TX, US
Agent
J Farrant
Assignee
K Watler
TX, US
Membrane Technology & Research
CA, US
IPC
B01D 53/22
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