Gas separation membrane with partial surfactant coating

Details Gas separation membrane with partial surfactant coating Gas separation membrane with partial surfactant coating

2005-05-25

2009-08-25

Griffin, Walter D (Department: 1797)

Gas separation: apparatus

Apparatus for selective diffusion of gases

Plural separate barriers

C210S490000

Reexamination Certificate

active

07578871

ABSTRACT:
A gas separation module includes fibers formed of a membrane which exhibits selectivity between gaseous components to be separated. The fibers are partially coated with a solution which enhances their selectivity, the fibers being uncoated in the vicinity of their feed ends. The partially coated fibers provide a good compromise between the goals of improved selectivity and enhanced product flow. The gaseous component that permeates through the membrane is made to flow in a direction opposite that of the main gas feed, due to a baffle that directs the permeate in the desired direction. The invention also includes a method and apparatus for making the partially coated module.

REFERENCES:
patent: 5141530 (1992-08-01), Jensvold
patent: 5163977 (1992-11-01), Jensvold
patent: 6136073 (2000-10-01), Coan et al.
patent: 6180168 (2001-01-01), Stookey
patent: 6688477 (2004-02-01), Kalthod
patent: 6746513 (2004-06-01), Anderson
patent: 6776820 (2004-08-01), Bikson et al.
patent: 2002/0162455 (2002-11-01), Bikson et al.

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