Water-free hydrocarbon separation membrane and process

Details Water-free hydrocarbon separation membrane and process Water-free hydrocarbon separation membrane and process

1984-12-31

1986-09-30

Sever, Frank

Gas separation

Means within gas stream for conducting concentrate to collector

55158, 210638, 21050025, B01D 5910

Patent

active

046145249

ABSTRACT:
Water-free membranes suitable for separating aliphatically-unsaturated hydrocarbons from saturated hydrocarbons are disclosed wherein the membranes are comprised of preformed membranes of polymeric materials capable of chemically binding positive ions and the membranes have been ion exchanged to contain metal ions as well as being plasticized with polyhydric alcohols. The water-free membranes provide for facilitated transport of aliphatically-unsaturated hydrocarbons through a membrane process wherein the unsaturated species of the feed mixture is transported across the plasticized membrane by virtue of the metal ions interacting selectively and reversibly with the unsaturated species. The separation of ethylene from ethane utilizing the water-free membrane system is of particular interest.

REFERENCES:
patent: 3980605 (1976-09-01), Steigelmann et al.
patent: 4264338 (1981-04-01), Null

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