Highly Selective Membranes For The Separation Of Organic Vapors Using Super-Glassy Polymers

Pinnau, Ingo; Lokhandwala, Kaaeid; Nguyen, Phuong; Segelke, Scott

Title: Highly Selective Membranes For The Separation Of Organic Vapors Using Super-Glassy Polymers

Patent · Tue Nov 18 00:00:00 EST 1997

OSTI ID:879332

Pinnau, Ingo ^[1]; Lokhandwala, Kaaeid ^[2]; Nguyen, Phuong ^[3]; Segelke, Scott ^[4]

Palo Alto, CA
Menlo Park, CA
Fremont, CA
Mountain View, CA

A process for separating hydrocarbon gases of low boiling point, particularly methane, ethane and ethylene, from nitrogen. The process is performed using a membrane made from a super-glassy material. The gases to be separated are mixed with a condensable gas, such as a C.sub.3+ hydrocarbon. In the presence of the condensable gas, improved selectivity for the low-boiling-point hydrocarbon gas over nitrogen is achieved.

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Research Organization:: MEMBRANE TECHNOLOGY & RES INC

DOE Contract Number:: FG03-94ER81811

Assignee:: MEMBRANE TECHNOLOGY & RES INC

Patent Number(s):: US 5688307

Application Number:: 08/608706

OSTI ID:: 879332

Country of Publication:: United States

Language:: English

References (7)

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Composite membrane of poly(1-(trimethylsilyl)-propyne) as a potential oxygen separation membrane Asakawa, S.; Saitoh, Y.; Waragai, K. Gas Separation & Purification, Vol. 3, Issue 3 https://doi.org/10.1016/0950-4214(89)80021-0	journal	September 1989
Sorption and transport of various gases in polycarbonate Koros, W. J.; Chan, A. H.; Paul, D. R. Journal of Membrane Science, Vol. 2 https://doi.org/10.1016/S0376-7388(00)83242-1	journal	January 1977
Gas permeability of polyacetylenes carrying substituents Takada, Koichi; Matsuya, Hidehiko; Masuda, Toshio Journal of Applied Polymer Science, Vol. 30, Issue 4 https://doi.org/10.1002/app.1985.070300426	journal	April 1985
Polyacetylene derivatives as membranes for gas separation Nakagawa, T.; Saito, T.; Asakawa, S. Gas Separation & Purification, Vol. 2, Issue 1 https://doi.org/10.1016/0950-4214(88)80035-5	journal	March 1988
Substituted propyne polymers Langsam, M.; Anand, M.; Karwacki, E. J. Gas Separation & Purification, Vol. 2, Issue 4 https://doi.org/10.1016/0950-4214(88)80001-X	journal	December 1988

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