Process and apparatus for separating impurities from hydrocarbon

Details Process and apparatus for separating impurities from hydrocarbon Process and apparatus for separating impurities from hydrocarbon

1991-03-12

1992-09-22

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 68, 55158, B01D 5322, B01D 6310

Patent

active

051493403

ABSTRACT:
A semi-permeable membrane process of separating impurities from a hydrocarbon mixture. A fuel gas sweep gas is used to purge and dilute the permeate. Because this reduces the partial pressure of the impurities, the driving force for permeation is increased even though the permeate mixture pressure is increased to the extent that the system need not employ a compressor or vacuum pump. The mixture of permeate, fuel gas and permeated hydrocarbon product can be delivered at a pressure sufficient to flow directly to the plant fuel system or other system for use therein. Specific membrane units employing hollow fiber membranes or spirally wound stacked membrane layers are disclosed.

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