DE69116623D1 - Verfahren zur Reinigung von 1,1,1,2-Tetrafluorethan - Google Patents
Verfahren zur Reinigung von 1,1,1,2-TetrafluorethanInfo
- Publication number
- DE69116623D1 DE69116623D1 DE69116623T DE69116623T DE69116623D1 DE 69116623 D1 DE69116623 D1 DE 69116623D1 DE 69116623 T DE69116623 T DE 69116623T DE 69116623 T DE69116623 T DE 69116623T DE 69116623 D1 DE69116623 D1 DE 69116623D1
- Authority
- DE
- Germany
- Prior art keywords
- tetrafluoroethane
- purification
- 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 - Fee Related
Links
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB909018372A GB9018372D0 (en) | 1990-08-21 | 1990-08-21 | Separation process |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69116623D1 true DE69116623D1 (de) | 1996-03-07 |
DE69116623T2 DE69116623T2 (de) | 1996-05-30 |
Family
ID=10681018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69116623T Expired - Fee Related DE69116623T2 (de) | 1990-08-21 | 1991-08-19 | Verfahren zur Reinigung von 1,1,1,2-Tetrafluorethan |
Country Status (7)
Country | Link |
---|---|
US (1) | US5200431A (de) |
EP (1) | EP0472391B1 (de) |
JP (1) | JPH04257533A (de) |
CA (1) | CA2049602A1 (de) |
DE (1) | DE69116623T2 (de) |
ES (1) | ES2082932T3 (de) |
GB (2) | GB9018372D0 (de) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2689503B1 (fr) * | 1992-04-03 | 1994-06-10 | Solvay | Procede d'epuration d'un hydrofluoroalcane. |
FR2689885B1 (fr) * | 1992-04-14 | 1994-10-21 | Atochem North America Elf | Procédé pour inhiber la décomposition du 1,1-dichloro-1-fluoréthane. |
IT1256631B (it) * | 1992-12-10 | 1995-12-12 | Ausimont Spa | Procedimento per la separazione di hf da sue miscele con gli idroclorofluorcarburi 123 e/o 124 |
GB9307923D0 (en) * | 1993-04-16 | 1993-06-02 | Ici Plc | Process for the purification of 1-chloro-2,2,2-trifluroethane |
DE69510180T2 (de) * | 1994-02-07 | 1999-11-11 | E.I. Du Pont De Nemours And Co., Wilmington | Verfahren zur trennung von pentafluorethan aus einer mischung von halogenierten kohlenwasserstoffen und chloropentafluorethan |
FR2716449B1 (fr) * | 1994-02-24 | 1996-04-05 | Atochem Elf Sa | Procédé de purification du pentafluoroéthane. |
US5723429A (en) * | 1994-03-11 | 1998-03-03 | E. I. Du Pont De Nemours And Company | Azeotropic or azeotrope-like compositions of tetrafluoroethane and chlorotetrafluoroethane |
US5470442A (en) * | 1994-03-11 | 1995-11-28 | E. I. Du Pont De Nemours And Company | Separating and removing impurities from tetrafluoroethanes by using extractive distillation |
KR100348203B1 (ko) * | 1994-08-17 | 2002-09-18 | 다이낑 고오교 가부시키가이샤 | 펜타플루오로에탄의제조방법 |
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 |
FR2730228B1 (fr) | 1995-02-07 | 1997-06-20 | Atochem Elf Sa | Procede de purification du pentafluoroethane |
US5895639A (en) * | 1996-07-03 | 1999-04-20 | Alliedsignal Inc. | Separation of hydrogen fluoride from a fluorocarbon/hydrogen fluoride azeotropic mixture by sulfuric acid |
WO1998000379A1 (en) * | 1996-07-03 | 1998-01-08 | Alliedsignal Inc. | Water extraction of hydrogen fluoride from a halocarbon/hydrogen fluoride azeotropic mixture |
US5874657A (en) * | 1996-11-01 | 1999-02-23 | E. I. Du Pont De Nemours And Company | Process for the purification of 1,1-difluoroethane |
FR2758137B1 (fr) * | 1997-01-06 | 1999-02-26 | Atochem Elf Sa | Procede de purification du pentafluoroethane par distillation extractive |
FR2759078B1 (fr) * | 1997-02-04 | 1999-03-05 | Atochem Elf Sa | Purification du chlorotetrafluoroethane par distillation extractive |
US6164080A (en) * | 1998-08-12 | 2000-12-26 | Hudson Technologies, Inc. | Apparatus and method for flushing a refrigeration system |
US6357240B1 (en) | 1998-08-12 | 2002-03-19 | Hudson Technologies, Inc. | Apparatus and method for flushing a chiller system |
US6505475B1 (en) | 1999-08-20 | 2003-01-14 | Hudson Technologies Inc. | Method and apparatus for measuring and improving efficiency in refrigeration systems |
FR2806077B1 (fr) * | 2000-03-07 | 2004-01-30 | Solvay | Procede pour l'obtention d'un hydrofluoroalcane epure, hydrofluoroalcane epure, utilisation de l'hydrofluoroalcane et methode d'analyse d'un hydrofluoroalcane |
US7189311B2 (en) * | 2001-03-23 | 2007-03-13 | Honeywell International Inc. | Purification of difluoromethane |
US8463441B2 (en) * | 2002-12-09 | 2013-06-11 | Hudson Technologies, Inc. | Method and apparatus for optimizing refrigeration systems |
KR101258973B1 (ko) * | 2002-12-09 | 2013-04-29 | 허드슨 테크놀로지스, 인코포레이티드 | 냉각 시스템 최적화 방법 및 장치 |
US7371363B2 (en) | 2003-07-15 | 2008-05-13 | Honeywell International Inc. | Methods of purifying hydrogen fluoride |
EP1799727A2 (de) * | 2004-06-21 | 2007-06-27 | ExxonMobil Chemical Patents Inc. | Niedrigfouling- und hochaktivpolymerisationsverfahren |
JP5134952B2 (ja) * | 2004-06-23 | 2013-01-30 | エクソンモービル・ケミカル・パテンツ・インク | 抽出蒸留を用いたプロセス |
FR2892933B1 (fr) * | 2005-11-10 | 2010-11-05 | Herve Andre Gerard Durand | Extrait vegetal obtenu par un procede d'extraction a l'aide de solvants d'origine vegetale |
US7893176B2 (en) * | 2007-03-23 | 2011-02-22 | Exxonmobil Chemical Patents Inc. | Polydispersity-controlled isoolefin polymerization with polymorphogenates |
WO2009013198A1 (en) * | 2007-07-20 | 2009-01-29 | Solvay Fluor Gmbh | Process for obtaining a purified hydrofluoroalkane |
US8845921B2 (en) | 2008-04-09 | 2014-09-30 | Honeywell International Inc. | Separation of close boiling compounds by addition of a third compound |
US8252965B2 (en) | 2008-08-22 | 2012-08-28 | Honeywell International Inc. | Method for separating halocarbons |
PL3511312T3 (pl) * | 2012-03-02 | 2020-11-30 | Arkema Inc. | Sposób usuwania zanieczyszczeń z chlorofluorowodoroolefiny z użyciem destylacji ekstrakcyjnej |
FR3032706B1 (fr) * | 2015-02-17 | 2019-10-11 | Arkema France | Procede de separation du 2-chloro-1,1-difluoroethane et du trans-dichloroethylene |
CN115010576A (zh) * | 2022-07-02 | 2022-09-06 | 浙江三美化工股份有限公司 | 一种二氟甲烷的制备方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1293690A (fr) * | 1960-04-28 | 1962-05-18 | Du Pont | Procédé de distillation extractive de carbures fluorés |
US3689374A (en) * | 1971-05-10 | 1972-09-05 | Phillips Petroleum Co | Process for separating halogenated hydrocarbons by extractive distillation |
US3819493A (en) * | 1973-04-26 | 1974-06-25 | Phillips Petroleum Co | Process for separating halogenated hydrocarbons by extractive distillation |
-
1990
- 1990-08-21 GB GB909018372A patent/GB9018372D0/en active Pending
-
1991
- 1991-08-09 GB GB919117320A patent/GB9117320D0/en active Pending
- 1991-08-19 ES ES91307623T patent/ES2082932T3/es not_active Expired - Lifetime
- 1991-08-19 EP EP91307623A patent/EP0472391B1/de not_active Expired - Lifetime
- 1991-08-19 DE DE69116623T patent/DE69116623T2/de not_active Expired - Fee Related
- 1991-08-20 JP JP3208038A patent/JPH04257533A/ja active Pending
- 1991-08-21 US US07/747,755 patent/US5200431A/en not_active Expired - Fee Related
- 1991-08-21 CA CA002049602A patent/CA2049602A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
CA2049602A1 (en) | 1992-02-22 |
GB9117320D0 (en) | 1991-09-25 |
EP0472391A1 (de) | 1992-02-26 |
GB9018372D0 (en) | 1990-10-03 |
JPH04257533A (ja) | 1992-09-11 |
EP0472391B1 (de) | 1996-01-24 |
DE69116623T2 (de) | 1996-05-30 |
US5200431A (en) | 1993-04-06 |
ES2082932T3 (es) | 1996-04-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |