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Title: Nitrogen removal from natural gas using two types of membranes

Abstract

A process for treating natural gas or other methane-rich gas to remove excess nitrogen. The invention relies on two-stage membrane separation, using methane-selective membranes for the first stage and nitrogen-selective membranes for the second stage. The process enables the nitrogen content of the gas to be substantially reduced, without requiring the membranes to be operated at very low temperatures.

Inventors:
; ; ;
Issue Date:
Research Org.:
Membrane Technology and Research, Inc., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174524
Patent Number(s):
6630011
Application Number:
10/245,904
Assignee:
Membrane Technology and Research, Inc. (Menlo Park, CA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
DOE Contract Number:  
FG03-01ER83274
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS

Citation Formats

Baker, Richard W., Lokhandwala, Kaaeid A., Wijmans, Johannes G., and Da Costa, Andre R. Nitrogen removal from natural gas using two types of membranes. United States: N. p., 2003. Web.
Baker, Richard W., Lokhandwala, Kaaeid A., Wijmans, Johannes G., & Da Costa, Andre R. Nitrogen removal from natural gas using two types of membranes. United States.
Baker, Richard W., Lokhandwala, Kaaeid A., Wijmans, Johannes G., and Da Costa, Andre R. Tue . "Nitrogen removal from natural gas using two types of membranes". United States. https://www.osti.gov/servlets/purl/1174524.
@article{osti_1174524,
title = {Nitrogen removal from natural gas using two types of membranes},
author = {Baker, Richard W. and Lokhandwala, Kaaeid A. and Wijmans, Johannes G. and Da Costa, Andre R.},
abstractNote = {A process for treating natural gas or other methane-rich gas to remove excess nitrogen. The invention relies on two-stage membrane separation, using methane-selective membranes for the first stage and nitrogen-selective membranes for the second stage. The process enables the nitrogen content of the gas to be substantially reduced, without requiring the membranes to be operated at very low temperatures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {10}
}

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Works referenced in this record:

Relation of gas permeability with structure of aromatic polyimides I
journal, March 1996


Permeability and permselectivity of gases in fluorinated and non-fluorinated polyimides
journal, January 1992


Relationship between gas separation properties and chemical structure in a series of aromatic polyimides
journal, April 1988