GB1380484A - Separation process - Google Patents
Separation processInfo
- Publication number
- GB1380484A GB1380484A GB4160872A GB4160872A GB1380484A GB 1380484 A GB1380484 A GB 1380484A GB 4160872 A GB4160872 A GB 4160872A GB 4160872 A GB4160872 A GB 4160872A GB 1380484 A GB1380484 A GB 1380484A
- Authority
- GB
- United Kingdom
- Prior art keywords
- membrane
- mixture
- radicals derived
- water
- component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000926 separation method Methods 0.000 title 1
- 239000012528 membrane Substances 0.000 abstract 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 6
- 238000009792 diffusion process Methods 0.000 abstract 5
- 239000000203 mixture Substances 0.000 abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 abstract 3
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 abstract 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 3
- 229910017604 nitric acid Inorganic materials 0.000 abstract 3
- KFDVPJUYSDEJTH-UHFFFAOYSA-N 4-ethenylpyridine Chemical compound C=CC1=CC=NC=C1 KFDVPJUYSDEJTH-UHFFFAOYSA-N 0.000 abstract 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 abstract 2
- 238000007334 copolymerization reaction Methods 0.000 abstract 2
- 238000005194 fractionation Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- -1 polytetrafluoroethylene Polymers 0.000 abstract 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 2
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 abstract 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 abstract 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 abstract 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 abstract 1
- 239000004793 Polystyrene Substances 0.000 abstract 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 abstract 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 abstract 1
- 150000001298 alcohols Chemical class 0.000 abstract 1
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- 229920002313 fluoropolymer Polymers 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- 239000000178 monomer Substances 0.000 abstract 1
- RAYLUPYCGGKXQO-UHFFFAOYSA-N n,n-dimethylacetamide;hydrate Chemical compound O.CN(C)C(C)=O RAYLUPYCGGKXQO-UHFFFAOYSA-N 0.000 abstract 1
- 238000005373 pervaporation Methods 0.000 abstract 1
- 229920000075 poly(4-vinylpyridine) Polymers 0.000 abstract 1
- 229920002223 polystyrene Polymers 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000010408 sweeping Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
- B01D61/362—Pervaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0093—Chemical modification
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/13—Use of sweep gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/38—Graft polymerization
Abstract
1380484 Fractionation AGENCE NATIONALE DE VALORISATION DE LA RECHERCHE 7 Sept 1972 [9 Sept 1971 10 Sept 1971] 41608/72 Headings BIB and B1X A process for the fractionation of a mixture of at least two components comprises contacting the mixture with one surface of an organic membrane carrying, radicals introduced by graft copolymerization, while a chemical potential gradient is maintained between the two surfaces of the said membrane by maintaining the other surface thereof under reduced pressure or by sweeping it with a gaseous stream, and one one side of the -membrane an enriched fraction of one component is recovered and on the other side an enriched fraction of the other component is recovered, wherein a membrane is used which is formed of a thin sheet of fluorinated polymer, into the mass of which have been introduced, by graft polymerisation, radicals derived from a polar monomer having an ability to interact with one of the components and substantially an absence of such an ability with respect to the other component, the first named component being thus preferentially diffused through the membrane. The process may be used (a) to separate a chloroform/ hydrocarbon mixture using a membrane composed of P.T.F.E. carrying radicals derived from poly 4-vinylpyridine or polyvinylpyrrolidone, (b) to dehydrate alcohols by selective diffusion through a membrane obtained by introducing by graft copolymerization, radicals derived from 4-vinyl-pyridine or vinylpyrrolidone into a sheet of P.T.F.E., (e) for the pervaporation of a water/N,N dimethylacetamide using a membrane composed of P.T.F.E. carrying radicals derived from vinyl-4-pyridine, (d) for the dehydration of nitric acid by diffusion of water through a membrane composed of polytetrafluoroethylene and sulphonated polystyrene, (e) for separating a mixture of water and nitric acid by selective diffusion of nitric acid through a membrane composed of polytetrafluoroethylene and polyvinylpyrrolidone, (f) to separate a methanol/methyl acetate mixture by diffusion of methanol through a membrane composed of P.T.F.E. carrying radicals derived from 4-vinylpyridine or N-vinyl-pyrrolidone and (g) to dehydrate N,N-dimethyl formamide .by selective diffusion of water through a membrane of P.T.F.E. into which have been introduced, by graft polymerisation, radical(s) derived from N-vinylpyrrolidone.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7132560A FR2151696A5 (en) | 1971-09-09 | 1971-09-09 | |
| FR7132689A FR2153130B2 (en) | 1971-09-09 | 1971-09-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1380484A true GB1380484A (en) | 1975-01-15 |
Family
ID=26216604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4160872A Expired GB1380484A (en) | 1971-09-09 | 1972-09-07 | Separation process |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE788373A (en) |
| DE (1) | DE2244045A1 (en) |
| FR (2) | FR2151696A5 (en) |
| GB (1) | GB1380484A (en) |
| NL (1) | NL7212144A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2226341A3 (en) * | 2009-03-03 | 2010-09-29 | Oridion Medical 1987 Ltd. | Drying substances, preparation and use thereof |
| US8366811B2 (en) | 2009-03-03 | 2013-02-05 | Oridion Medical (1987) Ltd. | Drying substances, preparation and use thereof |
| US8747752B2 (en) | 2009-03-03 | 2014-06-10 | Oridion Medical (1987) Ltd. | Drying substances, preparation and use thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3531834C1 (en) * | 1985-09-06 | 1986-09-18 | Starcosa Gmbh, 3300 Braunschweig | Pervaporation process |
-
0
- BE BE788373D patent/BE788373A/en unknown
-
1971
- 1971-09-09 FR FR7132560A patent/FR2151696A5/fr not_active Expired
- 1971-09-10 FR FR7132689A patent/FR2153130B2/fr not_active Expired
-
1972
- 1972-09-06 NL NL7212144A patent/NL7212144A/xx not_active Application Discontinuation
- 1972-09-07 GB GB4160872A patent/GB1380484A/en not_active Expired
- 1972-09-08 DE DE2244045A patent/DE2244045A1/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2226341A3 (en) * | 2009-03-03 | 2010-09-29 | Oridion Medical 1987 Ltd. | Drying substances, preparation and use thereof |
| US8366811B2 (en) | 2009-03-03 | 2013-02-05 | Oridion Medical (1987) Ltd. | Drying substances, preparation and use thereof |
| US8540806B2 (en) | 2009-03-03 | 2013-09-24 | Oridion Medical (1987) Ltd. | Drying substances, preparation and use thereof |
| EP2666795A1 (en) * | 2009-03-03 | 2013-11-27 | Oridion Medical 1987 Ltd. | Drying substances, preparation and use thereof |
| US8747752B2 (en) | 2009-03-03 | 2014-06-10 | Oridion Medical (1987) Ltd. | Drying substances, preparation and use thereof |
| US8764888B2 (en) | 2009-03-03 | 2014-07-01 | Oridion Medical 1987 Ltd. | Drying substances, preparation and use thereof |
| US9067035B2 (en) | 2009-03-03 | 2015-06-30 | Oridion Medical (1987) Ltd. | Drying substances, preparation and use thereof |
| US9090766B2 (en) | 2009-03-03 | 2015-07-28 | Oridion Medical 1987 Ltd. | Drying substances, preparation and use thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2153130A2 (en) | 1973-05-04 |
| NL7212144A (en) | 1973-03-13 |
| DE2244045A1 (en) | 1973-04-05 |
| FR2151696A5 (en) | 1973-04-20 |
| FR2153130B2 (en) | 1974-01-04 |
| BE788373A (en) | 1973-01-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |