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Membrane-augmented cryogenic methane/nitrogen separation

Patent ·
OSTI ID:516928

A membrane separation process is described which is combined with a cryogenic separation process for treating a gas stream containing methane, nitrogen and at least one other component. The membrane separation process works by preferentially permeating methane and the other component and rejecting nitrogen. The process is particularly useful in removing components such as water, carbon dioxide or C{sub +2} hydrocarbons that might otherwise freeze and plug the cryogenic equipment. 10 figs.

Research Organization:
Membrane Technology and Research, Inc
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
FG03-94ER81809
Assignee:
Membrane Technology and Research, Inc., Menlo Park, CA (United States)
Patent Number(s):
US 5,647,227/A/
Application Number:
PAN: 8-608,707
OSTI ID:
516928
Country of Publication:
United States
Language:
English

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