Polymeric membrane and process for separating aliphatically unsaturated hydrocarbons

Patent · Tue May 14 04:00:00 EDT 1991

OSTI ID:5115819

Ho, W S.W.

This patent describes a process for separating at least one unsaturated hydrocarbon from a hydrocarbon feed stream containing. It comprises: contacting the feed stream against a first side of a solid, homogeneous membrane consisting essentially of a hydrophilic polymer selected from the group consisting of polyvinylalcohol, polyvinylacetate, sulfonyl containing polymers, polyvinylpyrrolidone, polyethylene oxide, polyacrylamide, copolymers thereof, and blends thereof, and a metal or metal ion capable of reversibly complexing with the unsaturated hydrocarbon, the metal or metal ion is distributed homogeneously in the hydrophilic polymer; and withdrawing at a second side of the membrane a permeate comprising the unsaturated hydrocarbon in higher concentration than in the feed stream; whereby the membrane provides high permeability and selectivity for unsaturated hydrocarbons and substantially increases the rate at which the permeate is withdrawn.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ (USA)
• Patent Number(s): A; US 5015268
• Application Number: PPN: US 7-409999
• OSTI ID: 5115819
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
020500 -- Petroleum-- Products & By-Products
023000 -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
AMIDES
AZOLES
BLOOD SUBSTITUTES
BY-PRODUCTS
CHEMICAL COMPOSITION
CHEMICAL FEEDSTOCKS
CHEMICAL REACTION KINETICS
COPOLYMERS
DRUGS
HEMATOLOGIC AGENTS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
INDUSTRIAL PLANTS
KINETICS
LACTAMS
MEMBRANES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
PETROLEUM REFINERIES
POLYMERS
POLYVINYLS
PROCESSING
PVP
PYRROLES
PYRROLIDONES
REACTION KINETICS
REFINING
SEPARATION PROCESSES