Gas separation membranes based on perfluorinated polymers
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-053/22
B01D-071/06
B01D-071/32
출원번호
US-0184308
(2014-02-19)
등록번호
US-8828121
(2014-09-09)
발명자
/ 주소
He, Zhenjie
Merkel, Timothy C.
Okamoto, Yoshiyuki
Koike, Yasuhiro
출원인 / 주소
Membrane Technology and Research, Inc.
대리인 / 주소
Hott, T.
인용정보
피인용 횟수 :
5인용 특허 :
13
초록▼
Disclosed herein is a process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of perfluorodioxolane monomers. The resulting membranes have superior selectivity performance for gas pairs of interest while
Disclosed herein is a process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of perfluorodioxolane monomers. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyflon® AD, and Cytop®.
대표청구항▼
1. A process for separating two components, A and B, of a gas mixture, comprising: (a) passing the gas mixture across a separation membrane having a feed side and a permeate side, the separation membrane having a selective layer comprising a copolymer comprising a first perfluorodioxolane monomer ha
1. A process for separating two components, A and B, of a gas mixture, comprising: (a) passing the gas mixture across a separation membrane having a feed side and a permeate side, the separation membrane having a selective layer comprising a copolymer comprising a first perfluorodioxolane monomer having the formula and a second perfluorodioxolane monomer;(b) providing a driving force for transmembrane permeation;(c) withdrawing from the permeate side a permeate stream enriched in component A compared to the gas mixture; and(d) withdrawing from the feed side a residue stream depleted in component A compared to the gas mixture. 2. The process of claim 1, wherein the second perfluorodioxolane monomer is selected from the group consisting of: Perfluorotetrahydro-Perfluoro-2-methylene-2-methylene-furo[3,4-4-methyl-1,3,-d][1,3]-dioxolanedioxolane(Monomer A)(Monomer B)Perfluoro-2-methylene-Perfluoro-2-methylene-4-methoxymethyl-4,5-dimethyl-1,3,-1,3-dioxolanedioxolane(Monomer C)(Monomer D)Perfluoro-3-methylene-Perfluoro-3-methylene-2,4-dioxabicyclo-2,3-dioxabicyclo-[4,3,0]nonane[3,3,0] octane(Monomer E)(Monomer F)Perfluoro-2-methylene-4,5-dimethoxymethyl-1,3-dioxolane(Monomer G). 3. The process of claim 1, wherein the copolymer comprises monomers of perfluoro-2-methylene-1,3-dioxolane and perfluoro-2-methylene-4,5-methoxymethyl-1,3-dioxolane. 4. The process of claim 1, wherein component A is chosen from the group consisting of hydrogen, carbon dioxide, nitrogen, helium and organic compounds. 5. The process of claim 1, wherein component A is hydrogen. 6. The process of claim 1, wherein component A is carbon dioxide. 7. The process of claim 1, wherein component A is nitrogen. 8. The process of claim 1, wherein component A is helium. 9. The process of claim 1, wherein component B is methane. 10. The process of claim 1, wherein the gas mixture further comprises methane and C3+ hydrocarbon vapors. 11. The process of claim 1, wherein component A is nitrogen and component B is methane. 12. The process of claim 1, wherein component A is carbon dioxide and component B is methane. 13. The process of claim 1, wherein component A is hydrogen and component B is methane. 14. The process of claim 1, wherein component A is helium and component B is methane. 15. The process of claim 1, wherein the selective layer comprises a copolymer having the formula: where m and n are positive integers. 16. The process of claim 1, wherein the copolymer is a dipolymer containing at least 25 mol % of perfluoro-2-methylene-1,3-dioxolane.
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이 특허에 인용된 특허 (13)
Kusuki Yoshihiro (Ichihara JPX) Yoshinaga Toshimune (Ichihara JPX) Shimazaki Hiroshi (Ichihara JPX), Aromatic polyimide double layered hollow filamentary membrane and process for producing same.
Hung Ming-Hong (Wilmington DE) Palmer Keith W. (Landenberg PA) Resnick Paul R. (Wilmington DE), Copolymers of perhalo-2,2-di-loweralkyl-1,3-dioxole, and perfluoro-2-methylene-4-methyl-1,3-dioxolane.
Kopp Clinton V. (53 Tuckwell Road Castle Hill ; New South Wales AUX) Streeton Robert J. W. (33 Drummond Street Windsor ; New South Wales AUX) Khoo Paul S. (26 Christine Street Northmead ; New South W, Extrusion head for forming polymeric hollow fiber.
Okamoto, Yoshiyuki; Koike, Yasuhiro, Method for producing fluorinated 1,3-dioxolane compounds, fluorinated 1, 3-dioxolane compounds, fluorinated polymers of the fluorinated 1,3-dioxolane compounds and optical or electrical materials using the polymers.
Sluma Heinz-Dieter (Grossostheim DEX) Weizenhofer Robert (Erlenbach DEX) Leeb Alfons (Kleinwallstadt DEX) Bauer Karl (Dammbach DEX), Method of making a multilayer capillary membrane.
Merkel, Timothy C; Zhang, Hao; He, Zhenjie; Wijmans, Johannes G; Okamoto, Yoshiyuki, Fluid separation processes using membranes based on fluorinated and perfluorinated polymers.
Zhang, Hao; He, Zhenjie; Merkel, Timothy C; Okamoto, Yoshiyuki; Koike, Yasuhiro, Gas separation membranes based on fluorinated and perfluorinated polymers.
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