Fractionation of light/heavy waxes by use of porous membranes

Details Fractionation of light/heavy waxes by use of porous membranes Fractionation of light/heavy waxes by use of porous membranes

1990-10-31

1992-01-28

Dawson, Robert A.

Liquid purification or separation

Processes

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

210652, 208 28, 208 33, 208 38, 585818, B01D 6100

Patent

active

050841831

ABSTRACT:
Mixtures of light and heavy waxes are fractionated by permeation through a porous membrane at temperatures just above the cloud point of the mixture with the heavier, higher melting point waxes being the component of the mixture which selectively permeates through the porous membrane.

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"Novel Uses of Microporous Membranes: A Case Study", Callahan, Aiche Symposium Series, Membrane Materials & Processes, No. 261, vol. 84, pp. 54-65, 1988.
"Liquid-Liquid Extraction With Microporous Hollow Fibers", D'Elia et al., J. Memb. Sci. 29 (1986), 309-319.
"Critical Entry Pressure for Liquids in Hydrophobic Membranes", Kim et al., J. Colloid & Interface Sci., vol. 115, #1, Jan. 1987, 1-8.

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