Composite membrane for facilitated transport processes

Details Composite membrane for facilitated transport processes Composite membrane for facilitated transport processes

1990-11-05

1992-01-21

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 68, 55 73, 55158, B01D 5322, B01D 7136

Patent

active

050824724

ABSTRACT:
A dimensionally stable, composite membrane of a microporous film in laminar contact with a continuous perfluoro ion exchange resin layer is provided. The composite membrane comprises a continuous perfluoro ion exchange polymer layer which has an original, as-prepared, length, width and thickness, the ion exchange polymer layer being in laminar attachment to a film of a microporous material, preferably porous, expanded polytetrafluoroethylene (EPTFE), the microporous film having essentially the same length and width as the as-prepared continuous perfluoro ion exchange layer. The perfluoro ion exchange layer is swollen with a hydrophilic liquid to an extent that the hydrophilic liquid exceeds 20% by weight of the swollen, continuous perfluoro ion exchange layer. The swollen ion exchange layer exhibits less than a 5% increase in either length or width from its original, as-prepared, state, but it exhibits a substantial increase in thickness over its original, as-prepared, state.
The method of use of a dimensionally stable, expanded polytetrafluoroethylene (EPTFE) and perfluoro ion exchange resin composite membrane in a facilitated transport unit operation is also provided, the composite membrane comprising a continuous perfluoro ion exchange polymer layer in laminar attachment to a film of porous EPTFE, the perfluoro ion exchange layer being swollen with a hydrophilic liquid. The method is used in the facilitated transport separation of acid gas from a hydrocarbon stream.

REFERENCES:
patent: 4174374 (1979-11-01), Matson
patent: 4194041 (1980-03-01), Gore et al.
patent: 4318714 (1982-03-01), Kimura et al.
patent: 4414693 (1983-11-01), Brody
patent: 4474858 (1984-10-01), Makino et al.
patent: 4515761 (1985-05-01), Plotzker
patent: 4614524 (1986-09-01), Kraus
patent: 4666468 (1987-05-01), Wu
patent: 4710205 (1987-12-01), Deetz et al.
patent: 4737166 (1988-04-01), Matson et al.
patent: 4741744 (1988-05-01), Wu et al.
patent: 4844719 (1989-07-01), Toyomoto et al.
patent: 4875908 (1989-10-01), Kikukawa et al.
patent: 4902308 (1990-02-01), Mallouk et al.
patent: 4909810 (1990-03-01), Nakao et al.
patent: 4954145 (1990-09-01), Thakore et al.
patent: 4954388 (1990-09-01), Mallouk et al.
patent: 4973434 (1990-11-01), Sirkar et al.
Chemical Engineering Progress, p. 58 (Mar. 1989) Noble, Richard et al.
Liquid Membranes, Theory and Applications, Chapter 9 (Jun. 1986), Way and Noble.
AICHE Journal, vol. 33, No. 3, pp. 480-487 (Mar. 1987), Way, Noble, Reed, Ginley and Jarr.
Separation Science and Technology, 23, pp. 1595-1609 (1988), Noble, Pellegrino, Grosgeat, Sperry and Way.
Gas Separation and Purification, vol. 2, pp. 120-130 (Sep. 1988), Pellegrino, Nassimbene and Noble.
Polymer Material Science Eng., vol. 59, pp. 132-138 (1988), Koval and Spontarelli.
Perfluorinated Ion Exchange Membranes (May 1972), Grot et al.
Proceedings of Biochemical Engineering VI, (1988), Dutta & Sikdar.

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