Membrane separation of hydrocarbons

Patent · Tue Jun 17 00:00:00 EDT 1986

OSTI ID:5598552

Chang, Y A; Kulkarni, S S; Funk, E W

A process is described for the separation of a deasphalted crude oil and a light hydrocarbon solvent from a mixture thereof comprising passing the mixture across a polysulfone membrane at separation conditions whereby the light hydrocarbon solvent is recovered as the permeate and the deasphalted crude oil is recovered as the retentate. The membrane is prepared by a process wherein the polysulfone polymer is initially contacted in the form of a solution with a sulfonation agent under conditions suitable to achieve a degree of sulfonation of the polysulfone of from about 15 to about 50 percent, with the polysulfone subsequently being solution cast to form the membrane.

• Assignee: UOP, Inc., Des Plaines, IL
• Patent Number(s): US 4595507
• OSTI ID: 5598552
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
CHEMICAL REACTIONS
DEASPHALTING
DISPERSIONS
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
HYDROCARBONS
MEMBRANES
MIXTURES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PETROLEUM
POLYMERS
QUANTITY RATIO
SEPARATION PROCESSES
SULFONATION
SULFONES