Olefin separation membrane and process

Details Olefin separation membrane and process Olefin separation membrane and process

1996-05-23

1997-09-23

Fortuna, Ana

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

21050027, 21050038, 210638, 95 50, 95 45, 96 4, 96 6, 585818, B01D 6100, B01D 5372

Patent

active

056700512

ABSTRACT:
A membrane and process for separating unsaturated hydrocarbons from fluid mixtures. The membrane and process differ from previously known membranes and processes, in that the feed and permeate streams can both be dry, the membrane need not be water or solvent swollen, and the membrane is characterized by a selectivity for an unsaturated hydrocarbon over a saturated hydrocarbon having the same number of carbon atoms of at least about 20, and a pressure-normalized flux of said unsaturated hydrocarbon of at least about 5.times.10.sup.-6 cm.sup.3 (STP)/cm.sup.2 .multidot.s.multidot.cmHg, said flux and selectivity being measured with a gas mixture containing said unsaturated and saturated hydrocarbons, and in a substantially dry environment.

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K.-V. Peinemann et al., "Preparation and Properties of Highly Selective Inorganic/Organic Blend Memb. for Sep. of Reactive Gases," Proc. of Int. Cong. On Membrane and Membrane Processes, vol. 1, p292, 1990.

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