Methane/nitrogen separation process
Patent
·
OSTI ID:541738
A membrane separation process is described for treating a gas stream containing methane and nitrogen, for example, natural gas. The separation process works by preferentially permeating methane and rejecting nitrogen. The authors have found that the process is able to meet natural gas pipeline specifications for nitrogen, with acceptably small methane loss, so long as the membrane can exhibit a methane/nitrogen selectivity of about 4, 5 or more. This selectivity can be achieved with some rubbery and super-glassy membranes at low temperatures. The process can also be used for separating ethylene from nitrogen. 11 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 5,669,958/A/
- Application Number:
- PAN: 8-608,743
- OSTI ID:
- 541738
- Country of Publication:
- United States
- Language:
- English
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