Gas separation method

Details Gas separation method Gas separation method

Filed on

1996-05-29

Date issued

1998-01-20

Examiner

Spitzer, Robert

Patent Class

Gas separation: processes

SubClass

Selective diffusion of gases

SubSubClass

Selective diffusion of gases through substantially solid...

Other Related Categories

95 45, B01D 5322

Type

Patent

Status

active

Patent number

057097330

Description

ABSTRACT:
A method of separating a gas, especially carbon dioxide, from a gas mixture of the gas and nitrogen at a low temperature of -20.degree. C. to 50.degree. C. using a gas separation membrane permeable to the gas, including the step of cooling the gas mixture using at least one cooling medium selected from the group consisting of liquefied petroleum gas and liquefied natural gas. The liquefied petroleum gas comprises at least one selected from the group consisting of propane gas and butane gas in an amount of more than 50 vol. %. The gas separation membrane has a CO.sub.2 permeation rate of 1.times.10.sup.-4 to 5.times.10.sup.-2 N cm.sup.3 /(cm.sup.2 cm Hg sec) at 25.degree. C. and a CO.sub.2 /N.sub.2 separation factor of 10 to 200 at 25.degree. C.

REFERENCES:
patent: 4705540 (1987-11-01), Hayes
patent: 4717394 (1988-01-01), Hayes
patent: 4741744 (1988-05-01), Wu et al.
patent: 4793829 (1988-12-01), Pan et al.
patent: 4859215 (1989-08-01), Langsam et al.
patent: 4936887 (1990-06-01), Waldo et al.
patent: 4990168 (1991-02-01), Sauer et al.
patent: 5007944 (1991-04-01), Pinnau et al.
patent: 5055116 (1991-10-01), Kohn et al.
patent: 5073356 (1991-12-01), Guro et al.
patent: 5082481 (1992-01-01), Barchas et al.
patent: 5089033 (1992-02-01), Wijmans
patent: 5165963 (1992-11-01), Matsumoto et al.
patent: 5185014 (1993-02-01), Prasad
patent: 5207806 (1993-05-01), Lagree et al.
patent: 5234471 (1993-08-01), Weinberg
patent: 5286280 (1994-02-01), Chiou
patent: 5290341 (1994-03-01), Barbe
patent: 5538536 (1996-07-01), Fuentes et al.
patent: 5591250 (1997-01-01), Stern et al.
Haraya, et al., "Feasibility Study of the Application of Membrane Separation in CO.sub.2 Removal from Flue Gases", Kagaku Kougaku Ronbunshu vol. 19, No. 5 (1993), pp. 714-721.

Affiliated with

Also associated with

Rating

Gas separation method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gas separation method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas separation method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-722441