Gas separation membranes based on perfluorinated polymers
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IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-053/22
B01D-071/06
B01D-071/32
출원번호
US-0158032
(2016-05-18)
등록번호
US-10022677
(2018-07-17)
발명자
/ 주소
He, Zhenjie
Merkel, Timothy C.
Okamoto, Yoshiyuki
Koike, Yasuhiro
출원인 / 주소
Membrane Technology and Research, Inc.
대리인 / 주소
Hott, Timothy A.
인용정보
피인용 횟수 :
0인용 특허 :
20
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 at least two perfluorodioxolane monom
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 at least two perfluorodioxolane monomers;(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 at least one perfluorodioxolane monomer is selected from the group consisting of: 3. The process of claim 1, wherein component A is chosen from the group consisting of hydrogen, carbon dioxide, nitrogen, helium and organic compounds. 4. The process of claim 1, wherein component A is hydrogen. 5. The process of claim 1, wherein component A is carbon dioxide. 6. The process of claim 1, wherein component A is nitrogen. 7. The process of claim 1, wherein component A is helium. 8. The process of claim 1, wherein component B is methane. 9. The process of claim 1, wherein the gas mixture further comprises methane and C3+ hydrocarbon vapors. 10. The process of claim 1, wherein component A is nitrogen and component B is methane. 11. The process of claim 1, wherein component A is carbon dioxide and component B is methane. 12. The process of claim 1, wherein component A is hydrogen and component B is methane. 13. The process of claim 1, wherein component A is helium and component B is methane. 14. 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 perfluorodioxolane monomer having the formula Perfluoro-2-methylene-4,5-dimethyl-1,3,-dioxolane, anda perfluoro-2-methylene-1,3-dioxolane-based derivative;(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. 15. The process of claim 14, wherein the perfluoro-2-methylene-1,3-dioxolane-based derivative is selected from the group consisting of: 16. The process of claim 14, wherein component A is chosen from the group consisting of hydrogen, carbon dioxide, nitrogen, helium and organic compounds. 17. The process of claim 14, wherein component A is nitrogen and component B is methane. 18. The process of claim 14, wherein component A is carbon dioxide and component B is methane. 19. The process of claim 14, wherein component A is hydrogen and component B is methane. 20. The process of claim 14, wherein component A is helium and component B is methane. 21. The process of claim 1, wherein the copolymer comprises at least Monomer B and Monomer H.
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