Molecular sieve and membrane system to purify natural gas

Details Molecular sieve and membrane system to purify natural gas Molecular sieve and membrane system to purify natural gas

2006-12-19

2009-08-18

Lawrence, Frank M (Department: 1797)

Gas separation: processes

Selective diffusion of gases

Selective diffusion of gases through substantially solid...

C095S139000, C096S004000, C096S122000, C096S130000, C096S144000

Reexamination Certificate

active

07575624

ABSTRACT:
The invention comprises a process of removing carbon dioxide from a natural gas feed stream comprising sending a natural gas feed stream comprising methane and carbon dioxide through an adsorbent bed to produce a carbon dioxide depleted methane rich product stream after removal of carbon dioxide. The adsorbent bed is regenerated and then the spent regeneration gas stream cooled to produce a cooled spent regeneration gas stream that is sent to a membrane element. A permeate stream passes through the membrane element and a residue stream passes by the membrane element without passing through said membrane element. Substantially all of the carbon dioxide and a minor portion of the methane comprises the permeate stream which is disposed of and a major portion of the methane and a minor portion of the carbon dioxide comprises the residue stream which is then recirculated to the regeneration gas stream.

REFERENCES:
patent: 4130403 (1978-12-01), Cooley et al.
patent: 4229188 (1980-10-01), Intille
patent: 4230463 (1980-10-01), Henis et al.
patent: 4238204 (1980-12-01), Perry
patent: 4398926 (1983-08-01), Doshi
patent: 4701187 (1987-10-01), Choe et al.
patent: 4783203 (1988-11-01), Doshi
patent: 4863492 (1989-09-01), Doshi et al.
patent: 5435836 (1995-07-01), Anand et al.
patent: 5753010 (1998-05-01), Sircar et al.
patent: 2004/0123737 (2004-07-01), Filippi et al.

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