TW222617B - - Google Patents

Info

Publication number
TW222617B
TW222617B TW082102217A TW82102217A TW222617B TW 222617 B TW222617 B TW 222617B TW 082102217 A TW082102217 A TW 082102217A TW 82102217 A TW82102217 A TW 82102217A TW 222617 B TW222617 B TW 222617B
Authority
TW
Taiwan
Application number
TW082102217A
Other languages
Chinese (zh)
Original Assignee
Showa Denko Kk
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
Priority claimed from JP22183392A external-priority patent/JP3171685B2/ja
Application filed by Showa Denko Kk filed Critical Showa Denko Kk
Application granted granted Critical
Publication of TW222617B publication Critical patent/TW222617B/zh

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
    • 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
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/38—Separation; Purification; Stabilisation; Use of additives
    • 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
    • C07C17/389—Separation; Purification; Stabilisation; Use of additives by adsorption on solids
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/582—Recycling of unreacted starting or intermediate materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
TW082102217A 1992-08-20 1993-03-24 TW222617B (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22183392A JP3171685B2 (ja) 1992-02-04 1992-08-20 １，１，１，２テトラフルオロエタンの精製法

Publications (1)

Publication Number Publication Date
TW222617B true TW222617B (en:Method) 1994-04-21

Family

ID=16772913

Family Applications (1)

Application Number Title Priority Date Filing Date
TW082102217A TW222617B (en:Method) 1992-08-20 1993-03-24

Country Status (6)

Country Link
US (1) US5382724A (en:Method)
EP (1) EP0583551B1 (en:Method)
KR (1) KR100288458B1 (en:Method)
CN (1) CN1034167C (en:Method)
DE (1) DE69304638T2 (en:Method)
TW (1) TW222617B (en:Method)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
GB9425063D0 (en) * 1994-12-13 1995-02-08 Ici Plc Process for the recovery of a hydrfluoroalkane in the liquid phase
ES2155201T3 (es) 1995-10-10 2001-05-01 Ici Plc Procedimiento para la recuperacion de fluoruro de hidrogeno.
WO1998000379A1 (en) * 1996-07-03 1998-01-08 Alliedsignal Inc. Water extraction of hydrogen fluoride from a halocarbon/hydrogen fluoride azeotropic mixture
US6001796A (en) * 1996-07-03 1999-12-14 Alliedsignal Inc. Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and hydrogen fluoride
GB9707176D0 (en) 1997-04-09 1997-05-28 Ici Plc Hydrogen fluoride recovery process
RU2130332C1 (ru) * 1997-06-24 1999-05-20 Центральное конструкторское бюро машиностроения Способ переработки тетрафторэтилена с регламентированным содержанием изотопа 13c в двуокись углерода
US6458249B2 (en) 1997-11-10 2002-10-01 E. I. Du Pont De Nemours And Company Process for purifying perfluorinated products
RU2144421C1 (ru) * 1998-03-10 2000-01-20 Государственное предприятие Научно-исследовательский институт электрофизической аппаратуры имени Д.В.Ефремова Способ получения высокообогащенного изотопа 13c
DE10221113B4 (de) * 2002-05-06 2013-04-04 Fluorchemie Gmbh Frankfurt Verfahren zur Herstellung hochreiner Flusssäure
US9309116B2 (en) * 2011-09-26 2016-04-12 Honeywell International Inc. Method for producing high concentration aqueous HF solutions
CN104016305B (zh) * 2014-05-26 2016-06-22 浙江衢化氟化学有限公司 一种从氢氟烃粗品中回收氟化氢的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478362A (en) * 1948-06-15 1949-08-09 Kinetic Chemicals Inc Distillation process for separating products of perchloro-ethylene fluorination
US4038332A (en) * 1975-10-09 1977-07-26 Phillips Petroleum Company Separation of ethyl fluoride
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
EP0494994B1 (en) * 1989-10-04 1997-08-27 E.I. Du Pont De Nemours And Company Fluorocarbon purification process
JPH05255144A (ja) * 1991-11-15 1993-10-05 Hoechst Ag 弗化水素および１−クロロ−２，２，２−トリフルオロエタンを含有する混合物の分離方法

Also Published As

Publication number Publication date
KR940005531A (ko) 1994-03-21
CN1083037A (zh) 1994-03-02
DE69304638T2 (de) 1997-04-17
EP0583551A1 (en) 1994-02-23
US5382724A (en) 1995-01-17
CN1034167C (zh) 1997-03-05
DE69304638D1 (de) 1996-10-17
EP0583551B1 (en) 1996-09-11
KR100288458B1 (ko) 2001-05-02

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Legal Events

Date Code Title Description
MK4A Expiration of patent term of an invention patent