WO1993021140A1 - Method of removing hydrogen fluoride - Google Patents
Method of removing hydrogen fluoride Download PDFInfo
- Publication number
- WO1993021140A1 WO1993021140A1 PCT/JP1993/000455 JP9300455W WO9321140A1 WO 1993021140 A1 WO1993021140 A1 WO 1993021140A1 JP 9300455 W JP9300455 W JP 9300455W WO 9321140 A1 WO9321140 A1 WO 9321140A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydrogen fluoride
- mixture
- liquid phase
- dichloromethane
- difluoromethane
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C19/00—Acyclic saturated compounds containing halogen atoms
- C07C19/08—Acyclic saturated compounds containing halogen atoms containing fluorine
- C07C19/10—Acyclic saturated compounds containing halogen atoms containing fluorine and chlorine
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/19—Fluorine; Hydrogen fluoride
- C01B7/191—Hydrogen fluoride
- C01B7/195—Separation; Purification
- C01B7/196—Separation; Purification by distillation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/19—Fluorine; Hydrogen fluoride
- C01B7/191—Hydrogen fluoride
- C01B7/195—Separation; Purification
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU39040/93A AU663586B2 (en) | 1992-04-13 | 1993-04-09 | Method of removing hydrogen fluoride |
KR1019930703863A KR100295306B1 (ko) | 1992-04-13 | 1993-04-09 | 플루오르화수소의제거방법 |
EP93908071A EP0606482B1 (en) | 1992-04-13 | 1993-04-09 | Method of removing hydrogen fluoride |
US08/162,010 US5523015A (en) | 1992-04-13 | 1993-04-09 | Azeotropes of hydrogen fluoride with dichloromethane, difluoromethane and chlorofluoromethane |
BR9305484A BR9305484A (pt) | 1992-04-13 | 1993-04-09 | Processo para remoção de fluoreto de hidrogênio. |
CA002111007A CA2111007C (en) | 1992-04-13 | 1993-04-09 | Process for removal of hydrogen fluoride |
DE69319711T DE69319711T2 (de) | 1992-04-13 | 1993-04-09 | Verfahren zur entfernung von fluorwasserstoff |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4/92667 | 1992-04-13 | ||
JP9266792 | 1992-04-13 | ||
JP4/107656 | 1992-04-27 | ||
JP10765692 | 1992-04-27 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US58621796A Division | 1992-02-07 | 1996-01-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993021140A1 true WO1993021140A1 (en) | 1993-10-28 |
Family
ID=26434051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1993/000455 WO1993021140A1 (en) | 1992-04-13 | 1993-04-09 | Method of removing hydrogen fluoride |
Country Status (13)
Country | Link |
---|---|
US (2) | US5523015A (ja) |
EP (1) | EP0606482B1 (ja) |
JP (1) | JP3147380B2 (ja) |
KR (3) | KR100352680B1 (ja) |
CN (1) | CN1039313C (ja) |
AU (1) | AU663586B2 (ja) |
BR (1) | BR9305484A (ja) |
CA (1) | CA2111007C (ja) |
DE (1) | DE69319711T2 (ja) |
ES (1) | ES2118949T3 (ja) |
RU (1) | RU2118635C1 (ja) |
TW (1) | TW283659B (ja) |
WO (1) | WO1993021140A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0669303A1 (fr) * | 1994-02-28 | 1995-08-30 | Elf Atochem S.A. | Procédé de séparation du fluorure d'hydrogène et du difluorométhane |
WO1998008789A1 (fr) * | 1996-08-27 | 1998-03-05 | Daikin Industries, Ltd. | Procede de fabrication de difluoromethane |
US5955637A (en) * | 1993-11-01 | 1999-09-21 | E. I. Du Pont De Nemours And Company | Production of dihalomethanes containing fluorine and azeotropes of dihalomethanes containing chlorine with HF |
US6365580B1 (en) * | 1995-09-20 | 2002-04-02 | Alliedsignal Inc. | Process for the production of difluoromethane |
JP2009221228A (ja) * | 1994-09-20 | 2009-10-01 | E I Du Pont De Nemours & Co | ヘキサフルオロエタンの生成物の精製方法 |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3163831B2 (ja) * | 1993-04-06 | 2001-05-08 | ダイキン工業株式会社 | 1,1−ジフルオロエタンとフッ化水素の共沸混合物および1,1−ジフルオロエタンまたはフッ化水素の回収方法 |
GB9407257D0 (en) * | 1993-04-22 | 1994-06-08 | Ici Plc | Vaporisation of liquids |
US5789633A (en) * | 1995-06-06 | 1998-08-04 | E. I. Du Pont De Nemours And Company | Azeotropic or azeotrope-like compositions of hydrofluoric acid with dihaloethanes |
US5714650A (en) * | 1995-06-07 | 1998-02-03 | E. I. Du Pont De Nemours And Company | Continuous manufacture of 1,1-difluoroethane |
US5672788A (en) * | 1995-06-07 | 1997-09-30 | E. I. Du Pont De Nemours And Company | Two-step process for manufacturing 1,1-difluoroethane |
US5785822A (en) * | 1996-05-23 | 1998-07-28 | Alliedsignal Inc. | Process for separating difluoromethane |
WO1998000379A1 (en) * | 1996-07-03 | 1998-01-08 | Alliedsignal Inc. | Water extraction of hydrogen fluoride from a halocarbon/hydrogen fluoride azeotropic mixture |
KR100551521B1 (ko) * | 1996-08-27 | 2006-02-13 | 다이낑 고오교 가부시키가이샤 | 디플루오로메탄의 제조 방법 |
US5800682A (en) * | 1996-10-08 | 1998-09-01 | Alliedsignal Inc. | Process for the production of difluoromethane |
FR2768717B1 (fr) * | 1997-09-24 | 1999-11-12 | Solvay | Procede de separation de fluorure d'hydrogene de ses melanges avec un hydrofluoroalcane contenant de 3 a 6 atomes de carbone |
US6488817B1 (en) * | 1998-03-31 | 2002-12-03 | Alliedsignal Inc. | Purification of hydrofluorocarbons |
US6500795B2 (en) * | 2001-01-24 | 2002-12-31 | Honeywell International Inc. | Azeotrope-like composition of 1-chloro-1,3,3,3-tetrafluoropropane and hydrogen fluoride |
US6605193B2 (en) * | 2001-04-25 | 2003-08-12 | Atofina Chemicals, Inc. | Recovery of HFC-32 |
US6673264B2 (en) * | 2001-06-01 | 2004-01-06 | Honeywell International Inc. | Azeotrope-like compositions of 1,1,1,3,3-pentafluorobutane and hydrogen fluoride |
US8273928B2 (en) * | 2006-08-24 | 2012-09-25 | E I Du Pont De Nemours And Company | Processes for separation of fluoroolefins from hydrogen fluoride by azeotropic distillation |
CN103626626B (zh) * | 2013-11-01 | 2015-06-24 | 西安近代化学研究所 | 氟化氢和2-氯-1,1,1,2-四氟丙烷混合物的分离方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02167803A (ja) * | 1988-08-01 | 1990-06-28 | E I Du Pont De Nemours & Co | 相分離及び蒸留によるhfの分離方法 |
JPH02295938A (ja) * | 1989-05-04 | 1990-12-06 | Atochem North America Inc | ふっ化水素、1,1―ジクロロ―1―フルオロエタン及び1―クロロ―1,1―ジフルオロエタンをそれらの液状混合物から分離する方法 |
JPH02295937A (ja) * | 1989-05-04 | 1990-12-06 | Pennwalt Corp | 1,1―ジクロロ―1―フルオロエタンと1,1,1,3,3―ペンタフルオロブタンとの分離方法 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2450414A (en) | 1946-11-14 | 1948-10-05 | Kinetic Chemicals Inc | Distillation process for separating products of chloroform fluorination |
US3490739A (en) * | 1965-09-16 | 1970-01-20 | Walter R Buckman | Azeotropic composition containing hexafluoroacetone,hydrogen fluoride,and trichlorotrifluoroethane |
NL6617916A (ja) * | 1965-12-22 | 1967-06-23 | ||
US3728268A (en) * | 1970-12-11 | 1973-04-17 | Du Pont | Mixtures of 1,1,2-trichloro-1,2,2-trifluoroethane,ethanol and acetone and a ternary azeotrope thereof |
US3789004A (en) * | 1971-06-28 | 1974-01-29 | Ici Ltd | Solvent compositions |
US3947558A (en) | 1973-08-16 | 1976-03-30 | Dow Chemical (Nederland) B.V. | Method of recovering HF from mixtures containing C1 -C3 halocarbon compounds |
US4020112A (en) * | 1975-02-06 | 1977-04-26 | E. I. Du Pont De Nemours And Company | Oxidative fluorination of phenols |
US4169807A (en) * | 1978-03-20 | 1979-10-02 | Rca Corporation | Novel solvent drying agent |
JPS59225131A (ja) | 1983-06-06 | 1984-12-18 | Showa Denko Kk | ジフルオロメタンの製造方法 |
JPS6013726A (ja) | 1983-07-04 | 1985-01-24 | Showa Denko Kk | フルオロメタンの製造方法 |
US5036036A (en) | 1989-06-13 | 1991-07-30 | E. I. Du Pont De Nemours And Company | Chromium oxide catalyst composition |
AU6647690A (en) | 1989-10-04 | 1991-04-28 | E.I. Du Pont De Nemours And Company | Fluorocarbon purification process |
GB9105407D0 (en) * | 1991-03-14 | 1991-05-01 | Ici Plc | Separation process |
US5196616A (en) * | 1991-10-18 | 1993-03-23 | E. I. Du Pont De Nemours And Company | Process for separating and recovering fluorocarbons and hydrogen fluoride from mixtures thereof |
US6274781B1 (en) | 1993-11-01 | 2001-08-14 | E. I. Du Pont De Nemours And Company | Production of dihalomethanes containing fluorine and azeotropes of dihalomethanes containing chlorine with HF |
EP0669303B2 (fr) * | 1994-02-28 | 2007-08-08 | Arkema France | Procédé de séparation du fluorure d'hydrogène et du difluorométhane |
-
1993
- 1993-04-09 ES ES93908071T patent/ES2118949T3/es not_active Expired - Lifetime
- 1993-04-09 BR BR9305484A patent/BR9305484A/pt not_active IP Right Cessation
- 1993-04-09 CA CA002111007A patent/CA2111007C/en not_active Expired - Fee Related
- 1993-04-09 KR KR1020017015229A patent/KR100352680B1/ko not_active IP Right Cessation
- 1993-04-09 KR KR10-1998-0702434A patent/KR100338277B1/ko not_active IP Right Cessation
- 1993-04-09 US US08/162,010 patent/US5523015A/en not_active Expired - Lifetime
- 1993-04-09 RU RU93058442A patent/RU2118635C1/ru not_active IP Right Cessation
- 1993-04-09 KR KR1019930703863A patent/KR100295306B1/ko not_active IP Right Cessation
- 1993-04-09 AU AU39040/93A patent/AU663586B2/en not_active Ceased
- 1993-04-09 JP JP51817493A patent/JP3147380B2/ja not_active Expired - Fee Related
- 1993-04-09 DE DE69319711T patent/DE69319711T2/de not_active Expired - Fee Related
- 1993-04-09 EP EP93908071A patent/EP0606482B1/en not_active Expired - Lifetime
- 1993-04-09 WO PCT/JP1993/000455 patent/WO1993021140A1/ja active Application Filing
- 1993-04-13 CN CN93105703A patent/CN1039313C/zh not_active Expired - Lifetime
- 1993-04-13 TW TW082102792A patent/TW283659B/zh not_active IP Right Cessation
-
2000
- 2000-06-14 US US09/593,523 patent/US6311515B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02167803A (ja) * | 1988-08-01 | 1990-06-28 | E I Du Pont De Nemours & Co | 相分離及び蒸留によるhfの分離方法 |
JPH02295938A (ja) * | 1989-05-04 | 1990-12-06 | Atochem North America Inc | ふっ化水素、1,1―ジクロロ―1―フルオロエタン及び1―クロロ―1,1―ジフルオロエタンをそれらの液状混合物から分離する方法 |
JPH02295937A (ja) * | 1989-05-04 | 1990-12-06 | Pennwalt Corp | 1,1―ジクロロ―1―フルオロエタンと1,1,1,3,3―ペンタフルオロブタンとの分離方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0606482A4 * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5955637A (en) * | 1993-11-01 | 1999-09-21 | E. I. Du Pont De Nemours And Company | Production of dihalomethanes containing fluorine and azeotropes of dihalomethanes containing chlorine with HF |
US6274781B1 (en) | 1993-11-01 | 2001-08-14 | E. I. Du Pont De Nemours And Company | Production of dihalomethanes containing fluorine and azeotropes of dihalomethanes containing chlorine with HF |
EP0669303A1 (fr) * | 1994-02-28 | 1995-08-30 | Elf Atochem S.A. | Procédé de séparation du fluorure d'hydrogène et du difluorométhane |
US5707497A (en) * | 1994-02-28 | 1998-01-13 | Elf Atochem S.A. | Process for the separation of hydrogen fluoride and of difluoromethane |
JP2009221228A (ja) * | 1994-09-20 | 2009-10-01 | E I Du Pont De Nemours & Co | ヘキサフルオロエタンの生成物の精製方法 |
US6365580B1 (en) * | 1995-09-20 | 2002-04-02 | Alliedsignal Inc. | Process for the production of difluoromethane |
US6844474B1 (en) * | 1995-09-20 | 2005-01-18 | Allied Signal Inc. | Process for the production of difluoromethane |
WO1998008789A1 (fr) * | 1996-08-27 | 1998-03-05 | Daikin Industries, Ltd. | Procede de fabrication de difluoromethane |
US6375808B1 (en) | 1996-08-27 | 2002-04-23 | Daikin Industries Ltd. | Process for producing difluoromethane |
Also Published As
Publication number | Publication date |
---|---|
US5523015A (en) | 1996-06-04 |
ES2118949T3 (es) | 1998-10-01 |
DE69319711D1 (de) | 1998-08-20 |
KR940701373A (ko) | 1994-05-28 |
CN1039313C (zh) | 1998-07-29 |
AU663586B2 (en) | 1995-10-12 |
CA2111007C (en) | 2004-08-03 |
KR100295306B1 (ko) | 2001-09-17 |
TW283659B (ja) | 1996-08-21 |
EP0606482A4 (en) | 1994-03-23 |
KR100352680B1 (ko) | 2002-09-16 |
US6311515B1 (en) | 2001-11-06 |
DE69319711T2 (de) | 1999-01-07 |
EP0606482A1 (en) | 1994-07-20 |
KR100338277B1 (ko) | 2003-02-20 |
CA2111007A1 (en) | 1993-10-28 |
EP0606482B1 (en) | 1998-07-15 |
RU2118635C1 (ru) | 1998-09-10 |
BR9305484A (pt) | 1995-04-11 |
JP3147380B2 (ja) | 2001-03-19 |
AU3904093A (en) | 1993-11-18 |
CN1088195A (zh) | 1994-06-22 |
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