Olefin separation membrane and process

Patent · Wed Jan 01 00:00:00 EST 1997

OSTI ID:871153

Pinnau, Ingo ^[1]; Toy, Lora G ^[2]; Casillas, Carlos ^[3]

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1. Palo Alto, CA
2. San Francisco, CA
3. San Jose, CA

A membrane and process for separating unsaturated hydrocarbons from fluid mixtures. The membrane and process differ from previously known membranes and processes, in that the feed and permeate streams can both be dry, the membrane need not be water or solvent swollen, and the membrane is characterized by a selectivity for an unsaturated hydrocarbon over a saturated hydrocarbon having the same number of carbon atoms of at least about 20, and a pressure-normalized flux of said unsaturated hydrocarbon of at least about 5.times.10.sup.-6 cm.sup.3 (STP)/cm.sup.2 .multidot.s.multidot.cmHg, said flux and selectivity being measured with a gas mixture containing said unsaturated and saturated hydrocarbons, and in a substantially dry environment.

• Research Organization: Membrane Technology and Research, Inc. (Menlo Park, CA)
• DOE Contract Number: FG03-93ER81579
• Assignee: Membrane Technology and Research, Inc. (Menlo Park, CA)
• Patent Number(s): US 5670051
• OSTI ID: 871153
• Country of Publication: United States
• Language: English

Related Subjects

olefin
separation
membrane
process
separating
unsaturated
hydrocarbons
fluid
mixtures
previously
membranes
processes
feed
permeate
streams
dry
water
solvent
swollen
characterized
selectivity
hydrocarbon
saturated
carbon
atoms
20
pressure-normalized
flux
times
10
-6
cm
stp
multidot
cmhg
measured
gas
mixture
containing
substantially
environment
saturated hydrocarbons
mixture containing
carbon atoms
gas mixture
separation membrane
carbon atom
fluid mixture
unsaturated hydrocarbon
unsaturated hydrocarbons
saturated hydrocarbon
substantially dry
fluid mixtures
/210/95/96/585/