Membrane separation of hydrocarbons

Details Membrane separation of hydrocarbons Membrane separation of hydrocarbons

1984-08-03

1986-06-17

Spear, Frank

Liquid purification or separation

Processes

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

210651, B01D 1300

Patent

active

045955077

ABSTRACT:
Mixtures of heavy oils and light hydrocarbons may be separated by passing the mixture through a polymeric membrane. The membrane which is utilized to effect the separation comprises a polymer which is capable of maintaining its integrity in the presence of hydrocarbon compounds and which has been modified by being subjected to the action of a sulfonating agent. Sulfonating agents which may be employed will include fuming sulfuric acid, chlorosulfonic acid, sulfur trioxide, etc., the surface or bulk modified polymer will contain a degree of sulfonation ranging from about 15 to about 50%. The separation process is effected at temperatures ranging from about ambient to about 100.degree. C. and pressures ranging from about 50 to about 1000 psig.

REFERENCES:
patent: 3750735 (1973-08-01), Chiang et al.
patent: 4368112 (1983-01-01), Thompson et al.
patent: 4413074 (1983-11-01), Wrasidlo et al.

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