RU93058442A - Азеотропная смесь, способы удаления фтороводорода - Google Patents

Азеотропная смесь, способы удаления фтороводорода

Info

Publication number
RU93058442A
RU93058442A RU93058442/04A RU93058442A RU93058442A RU 93058442 A RU93058442 A RU 93058442A RU 93058442/04 A RU93058442/04 A RU 93058442/04A RU 93058442 A RU93058442 A RU 93058442A RU 93058442 A RU93058442 A RU 93058442A
Authority
RU
Russia
Prior art keywords
hydrogen
hydrogen fluoride
methods
azeotropic mixture
mixture
Prior art date
Application number
RU93058442/04A
Other languages
English (en)
Other versions
RU2118635C1 (ru
Inventor
Тсуда Такехиде
Матсумото Такео
Танака Йосинори
Коматсу Сатоси
Койяма Сатоси
Original Assignee
Дайкин Индастриз Лтд.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Дайкин Индастриз Лтд. filed Critical Дайкин Индастриз Лтд.
Publication of RU93058442A publication Critical patent/RU93058442A/ru
Application granted granted Critical
Publication of RU2118635C1 publication Critical patent/RU2118635C1/ru

Links

Claims (1)

  1. Фтороводород (HF) эффективно удаляется из смеси, состоящей из фтороводорода, дихлорметана, хлорфторометана и/или дифторометана, путем дистилляции смеси для удаления двухкомпонентных азеотропных смесей фтороводорода и дихлорметана, фтороводорода и хлорфторометана, фтороводорода и дифторометана, или путем разделения смеси на верхнюю жидкую фазу, обогащенную фтороводородом, и нижнюю жидкую фазу, обедненную фтороводородом, и дистилляции соответствующих фаз.
RU93058442A 1992-04-13 1993-04-09 Азеотропная смесь и способы выделения фтороводорода RU2118635C1 (ru)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP9266792 1992-04-13
JP92667/1992 1992-04-13
JP92667/92 1992-04-13
JP10765692 1992-04-27
JP107656/92 1992-04-27
JP107656/1992 1992-04-27

Publications (2)

Publication Number Publication Date
RU93058442A true RU93058442A (ru) 1996-12-10
RU2118635C1 RU2118635C1 (ru) 1998-09-10

Family

ID=26434051

Family Applications (1)

Application Number Title Priority Date Filing Date
RU93058442A RU2118635C1 (ru) 1992-04-13 1993-04-09 Азеотропная смесь и способы выделения фтороводорода

Country Status (13)

Country Link
US (2) US5523015A (ru)
EP (1) EP0606482B1 (ru)
JP (1) JP3147380B2 (ru)
KR (3) KR100295306B1 (ru)
CN (1) CN1039313C (ru)
AU (1) AU663586B2 (ru)
BR (1) BR9305484A (ru)
CA (1) CA2111007C (ru)
DE (1) DE69319711T2 (ru)
ES (1) ES2118949T3 (ru)
RU (1) RU2118635C1 (ru)
TW (1) TW283659B (ru)
WO (1) WO1993021140A1 (ru)

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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
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
DE69500938T2 (de) * 1994-02-28 1998-04-30 Atochem Elf Sa Verfahren zur Trennung von Fluorwasserstoff und Difluormethan
US5718807A (en) * 1994-09-20 1998-02-17 E. I. Du Pont De Nemours And Company Purification process for hexafluoroethane products
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
US5672788A (en) * 1995-06-07 1997-09-30 E. I. Du Pont De Nemours And Company Two-step process for manufacturing 1,1-difluoroethane
US5714650A (en) * 1995-06-07 1998-02-03 E. I. Du Pont De Nemours And Company Continuous manufacture of 1,1-difluoroethane
US5763708A (en) * 1995-09-20 1998-06-09 Allied Signal Inc. Process for the production of difluoromethane
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
AU3869597A (en) * 1996-08-27 1998-03-19 Daikin Industries, Ltd. Process for producing difluoromethane
WO1998008789A1 (fr) * 1996-08-27 1998-03-05 Daikin Industries, Ltd. Procede de fabrication de difluoromethane
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
EP2093187A1 (en) * 2001-06-01 2009-08-26 Honeywell International Inc. Process for the Removal of 1,1,1,3,3-Pentafluorobutane
EP2054361B1 (en) * 2006-08-24 2016-02-17 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

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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 (ru) * 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
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US4911792A (en) * 1988-08-01 1990-03-27 E. I. Du Pont De Nemours And Company Process for the separation of HF via phase separation and distillation
US4975156A (en) * 1989-05-04 1990-12-04 Atochem North America, Inc. Process for the separation of hydrogen fluoride, 1,1-dichloro-1-fluoroethane and 1-chloro-1,1-difluoroethane from liquid mixtures thereof
US4950364A (en) * 1989-05-04 1990-08-21 Pennwalt Corporation Process for the separation of 1,1-dichloro-1-fluoroethane and 1,1,1,3,3-pentafluorobutane
US5036036A (en) 1989-06-13 1991-07-30 E. I. Du Pont De Nemours And Company Chromium oxide catalyst composition
DE69031344D1 (de) 1989-10-04 1997-10-02 Du Pont Verfahren zur reinigung von fluorkohlenwasserstoffen
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
DE69500938T2 (de) * 1994-02-28 1998-04-30 Atochem Elf Sa Verfahren zur Trennung von Fluorwasserstoff und Difluormethan

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