GB1034894A - Improvements in or relating to fluorocarbon separation - Google Patents
Improvements in or relating to fluorocarbon separationInfo
- Publication number
- GB1034894A GB1034894A GB5155/64A GB515564A GB1034894A GB 1034894 A GB1034894 A GB 1034894A GB 5155/64 A GB5155/64 A GB 5155/64A GB 515564 A GB515564 A GB 515564A GB 1034894 A GB1034894 A GB 1034894A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- separated
- fluorocarbon
- relating
- separation
- 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
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 title 1
- 238000000926 separation method Methods 0.000 title 1
- 239000000203 mixture Substances 0.000 abstract 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 2
- 238000004821 distillation Methods 0.000 abstract 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 abstract 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 abstract 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 1
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 abstract 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 abstract 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052794 bromium Inorganic materials 0.000 abstract 1
- GRCDJFHYVYUNHM-UHFFFAOYSA-N bromodifluoromethane Chemical compound FC(F)Br GRCDJFHYVYUNHM-UHFFFAOYSA-N 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 229910052801 chlorine Inorganic materials 0.000 abstract 1
- 239000000460 chlorine Substances 0.000 abstract 1
- 150000002148 esters Chemical class 0.000 abstract 1
- 229910052731 fluorine Inorganic materials 0.000 abstract 1
- 239000011737 fluorine Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- 229910052740 iodine Inorganic materials 0.000 abstract 1
- 239000011630 iodine Substances 0.000 abstract 1
- 150000002576 ketones Chemical class 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000000197 pyrolysis Methods 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/383—Separation; Purification; Stabilisation; Use of additives by distillation
- C07C17/386—Separation; Purification; Stabilisation; Use of additives by distillation with auxiliary compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S62/00—Refrigeration
- Y10S62/918—Halocarbon
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Tetrafluoromethylene is separated from mixtures thereof with volatile non-perfluorinated fluorocarbons which, in addition to fluorine, contain at least one element selected from hydrogen, chlorine, bromine and iodine by adding to the mixture an alcohol or phenol, ether, ketone or ester of the general formulae R1OH, R2OR3, R4COR5 and R6CO.OR7, wherein R1 to R7 are saturated aliphatic or aromatic hydrocarbon radicals, and which is liquid at the distillation conditions and then fractionally distilling the mixture. The distillation agents preferably contain 1 to 12 carbon atoms in their molecule and the mixture to be separated may be prepared by the pyrolysis of chlorodifluoromethane or of bromodifluoromethane or by inorganic and organic fluoride arc processes known to produce tetrafluoroethylene.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US256520A US3282801A (en) | 1963-02-06 | 1963-02-06 | Extractive distillation of tetrafluoroethylene with an oxygenated hydrocarbon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1034894A true GB1034894A (en) | 1966-07-06 |
Family
ID=22972533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5155/64A Expired GB1034894A (en) | 1963-02-06 | 1964-02-06 | Improvements in or relating to fluorocarbon separation |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3282801A (en) |
| BE (1) | BE643472A (en) |
| DE (1) | DE1295543B (en) |
| FR (1) | FR1381844A (en) |
| GB (1) | GB1034894A (en) |
| NL (2) | NL6400982A (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1251300B (en) * | 1964-12-29 | 1967-10-05 | E I du Pont de Nemours and Company Wilmington Del (V St A) | Process for the purification of hexafluoropropylene epoxide with separation of hexafluoropropylene |
| CH459991A (en) * | 1964-12-30 | 1968-07-31 | Ciba Geigy | Process for the separation of mixtures of cycloaliphatic fluorine compounds |
| BE786675A (en) * | 1971-08-02 | 1973-01-25 | Airco Inc | SEPARATION OF ALKYL HALOGENOUS OXIDES BY AZEOTROPIC DISTILLATION. |
| US3989601A (en) * | 1975-09-08 | 1976-11-02 | The Dow Chemical Company | Purification of 1,1,1-trichloroethane by extractive distillation |
| DE2638650C2 (en) * | 1976-08-27 | 1982-11-25 | Hoechst Ag, 6000 Frankfurt | Process for the separation of tetrafluoroethylene from gas mixtures |
| US4134796A (en) * | 1977-11-17 | 1979-01-16 | Asahi Glass Company Ltd. | Method of purifying hexafluoropropylene oxide |
| FR2409973A1 (en) * | 1977-11-28 | 1979-06-22 | Asahi Glass Co Ltd | PROCESS FOR PURIFICATION OF HEXAFLUOROPROPYLENE OXIDE |
| DE3729106A1 (en) * | 1987-09-01 | 1989-03-09 | Hoechst Ag | PROCESS FOR OBTAINING PURE TETRAFLUOROETHYLENE |
| US5049241A (en) * | 1990-03-27 | 1991-09-17 | E. I. Du Pont De Nemours And Company | Extractive distillation |
| AU684757B2 (en) * | 1993-05-25 | 1998-01-08 | Showa Denko Kabushiki Kaisha | Purification process of pentafluoroethane |
| WO1996005158A1 (en) * | 1994-08-17 | 1996-02-22 | Daikin Industries, Ltd. | Process for producing pentafluoroethane |
| WO1996023752A1 (en) * | 1995-02-01 | 1996-08-08 | E.I. Du Pont De Nemours And Company | SEPARATING AND REMOVING IMPURITIES FROM 1,1,1-TRIFLUOROETHANE (HFC-143a) BY USING EXTRACTIVE DISTILLATION |
| US5626023A (en) * | 1995-02-16 | 1997-05-06 | Praxair Technology, Inc. | Cryogenic rectification system for fluorine compound recovery using additive liquid |
| US6047560A (en) * | 1997-03-12 | 2000-04-11 | Showa Denko K.K. | Process for separating pentafluoroethane and 1,1,1-trifluoroethane |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2604439A (en) * | 1952-07-22 | Distillation of | ||
| US2339160A (en) * | 1940-08-02 | 1944-01-11 | Shell Dev | Distillation process |
| US2473911A (en) * | 1943-07-19 | 1949-06-21 | Ici Ltd | Production of fluorocarbons |
| US2357028A (en) * | 1943-08-04 | 1944-08-29 | Shell Dev | Solvent extraction process |
| US2456184A (en) * | 1946-04-17 | 1948-12-14 | Du Pont | Purification of tetrachlorethylene |
| FR1293690A (en) * | 1960-04-28 | 1962-05-18 | Du Pont | Process for the extractive distillation of fluorinated carbides |
| DE1161877B (en) * | 1960-04-28 | 1964-01-30 | Du Pont | Process for the separation of perfluorocarbons |
| US3152051A (en) * | 1962-03-12 | 1964-10-06 | Pennsalt Chemicals Corp | Separation of a mixture containing tetrafluoroethylene and fluoroform by extractive distillation |
-
0
- NL NL131714D patent/NL131714C/xx active
-
1963
- 1963-02-06 US US256520A patent/US3282801A/en not_active Expired - Lifetime
-
1964
- 1964-01-22 DE DEP33431A patent/DE1295543B/en active Pending
- 1964-02-05 FR FR962672A patent/FR1381844A/en not_active Expired
- 1964-02-06 NL NL6400982A patent/NL6400982A/xx unknown
- 1964-02-06 GB GB5155/64A patent/GB1034894A/en not_active Expired
- 1964-02-06 BE BE643472A patent/BE643472A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE643472A (en) | 1964-08-06 |
| DE1295543B (en) | 1969-05-22 |
| US3282801A (en) | 1966-11-01 |
| NL6400982A (en) | 1964-08-07 |
| NL131714C (en) | |
| FR1381844A (en) | 1964-12-14 |
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