ES2167771T3 - Procedimiento de fabricacion de difluorometano. - Google Patents
Procedimiento de fabricacion de difluorometano.Info
- Publication number
- ES2167771T3 ES2167771T3 ES97935886T ES97935886T ES2167771T3 ES 2167771 T3 ES2167771 T3 ES 2167771T3 ES 97935886 T ES97935886 T ES 97935886T ES 97935886 T ES97935886 T ES 97935886T ES 2167771 T3 ES2167771 T3 ES 2167771T3
- Authority
- ES
- Spain
- Prior art keywords
- difluorometan
- difluoromethane
- manufacturing procedure
- contained
- hydrogen fluoride
- 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 - Lifetime
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
- 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)
Abstract
PROCEDIMIENTO PARA REFINAR DIFLUORMETANO, POR RETIRADA DEL FLUORURO DE HIDROGENO QUE SE CONTIENE EN EL DIFLUORMETANO Y QUE SE PENSABA QUE ERA DIFICIL DE RETIRAR, CUYO PROCESO COMPRENDE DESTILAR UNA MEZCLA DE DIFLUORMETANO, EN LA QUE EL FLUORURO DE HIDROGENO QUE SE CONTIENE EN EL DIFLUORMETANO SE ABSORBE POR MEDIO DE ACIDOS SULFURICO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22529096 | 1996-08-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2167771T3 true ES2167771T3 (es) | 2002-05-16 |
Family
ID=16827024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES97935886T Expired - Lifetime ES2167771T3 (es) | 1996-08-27 | 1997-08-26 | Procedimiento de fabricacion de difluorometano. |
Country Status (12)
Country | Link |
---|---|
US (1) | US6375808B1 (es) |
EP (1) | EP0924178B1 (es) |
JP (1) | JP3569921B2 (es) |
KR (1) | KR100488229B1 (es) |
CN (1) | CN1122006C (es) |
AT (1) | ATE208359T1 (es) |
AU (1) | AU719437B2 (es) |
BR (1) | BR9711971A (es) |
CA (1) | CA2264686A1 (es) |
DE (1) | DE69708127T2 (es) |
ES (1) | ES2167771T3 (es) |
WO (1) | WO1998008789A1 (es) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001233808A (ja) * | 2000-02-22 | 2001-08-28 | Asahi Glass Co Ltd | ジフルオロメタンの精製方法 |
US6403849B1 (en) | 2000-09-26 | 2002-06-11 | 3M Innovative Properties Company | Method for purifying perfluorocarbons |
US7371363B2 (en) * | 2003-07-15 | 2008-05-13 | Honeywell International Inc. | Methods of purifying hydrogen fluoride |
JP5747684B2 (ja) * | 2010-09-14 | 2015-07-15 | セントラル硝子株式会社 | ヒドロフルオロカーボンまたはヒドロクロロフルオロカーボンの脱水方法、および該脱水方法を用いた1,3,3,3−テトラフルオロプロペンの製造方法 |
US10032195B2 (en) * | 2013-03-13 | 2018-07-24 | Airline Tariff Publishing Company | System, method and computer program product for providing a fare analytic engine |
CN104888574A (zh) * | 2015-06-02 | 2015-09-09 | 江苏三美化工有限公司 | 一种二氟甲烷反应气中hf的分离设备及其工艺 |
CN108929193A (zh) * | 2018-06-28 | 2018-12-04 | 江苏三美化工有限公司 | 一种高纯度二氟甲烷的精馏工艺 |
CN113880048B (zh) * | 2021-09-30 | 2023-06-27 | 中化蓝天霍尼韦尔新材料有限公司 | 一种氢氟酸高效回收系统及方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR741966A (es) * | 1931-09-02 | 1933-02-23 | ||
US2640086A (en) | 1951-12-15 | 1953-05-26 | Du Pont | Process for separating hydrogen fluoride from chlorodifluoromethane |
GB1052118A (es) * | 1963-03-30 | |||
US3873624A (en) * | 1973-01-30 | 1975-03-25 | Allied Chem | Process of preparing {60 -formyl sulfides and 2-hydrocarbyl-thioaldoximes therefrom |
US3976447A (en) | 1973-04-26 | 1976-08-24 | Pennwalt Corporation | Removal of hydrogen fluoride from gaseous mixture by absorption on alkaline earth metal fluoride |
US3873629A (en) * | 1974-01-23 | 1975-03-25 | Du Pont | Separation of chlorodifluoromethane and hydrogen |
FR2414475A1 (fr) | 1978-01-13 | 1979-08-10 | Solvay | Procede pour la separation du fluorure d'hydrogene de ses melanges avec le 1-chloro-1, 1-difluorethane |
US5094773A (en) | 1988-08-01 | 1992-03-10 | E. I. Du Pont De Nemours And Company | Azeotropes of HF and process for the separation of HF via azeotropic distillation |
DK0467531T3 (da) | 1990-07-04 | 1994-10-31 | Ici Plc | Fremgangsmåde til adskillelse af 1,1,1,2-tetrafluorethan fra blandinger deraf med hydrogenfluorid og/eller 1-chlor-2,2-difluorethylen |
JPH05178768A (ja) | 1991-12-16 | 1993-07-20 | Showa Denko Kk | 1,1,1,2−テトラフルオロエタンとフッ化水素の分離方法 |
BR9305484A (pt) * | 1992-04-13 | 1995-04-11 | Daikin Ind Ltd | Processo para remoção de fluoreto de hidrogênio. |
FR2695386B1 (fr) * | 1992-09-10 | 1994-10-14 | Atochem Elf Sa | Procédé de séparation de fluorure d'hydrogène de ses mélanges avec le 1,1,1-trifluoro-2-chloroéthane. |
ES2110293T5 (es) * | 1994-02-28 | 2008-01-16 | Arkema France | Procedimiento para la separacion de fluoruro de hidrogeno y de difluormetano. |
US5763708A (en) * | 1995-09-20 | 1998-06-09 | Allied Signal Inc. | Process for the production of difluoromethane |
-
1997
- 1997-08-26 CN CN97197481A patent/CN1122006C/zh not_active Expired - Lifetime
- 1997-08-26 US US09/242,699 patent/US6375808B1/en not_active Expired - Lifetime
- 1997-08-26 AU AU38693/97A patent/AU719437B2/en not_active Ceased
- 1997-08-26 KR KR10-1999-7001454A patent/KR100488229B1/ko not_active IP Right Cessation
- 1997-08-26 BR BR9711971A patent/BR9711971A/pt not_active IP Right Cessation
- 1997-08-26 DE DE69708127T patent/DE69708127T2/de not_active Expired - Fee Related
- 1997-08-26 AT AT97935886T patent/ATE208359T1/de not_active IP Right Cessation
- 1997-08-26 EP EP97935886A patent/EP0924178B1/en not_active Expired - Lifetime
- 1997-08-26 JP JP51146798A patent/JP3569921B2/ja not_active Expired - Fee Related
- 1997-08-26 CA CA002264686A patent/CA2264686A1/en not_active Abandoned
- 1997-08-26 WO PCT/JP1997/002961 patent/WO1998008789A1/ja active IP Right Grant
- 1997-08-26 ES ES97935886T patent/ES2167771T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CN1122006C (zh) | 2003-09-24 |
BR9711971A (pt) | 1999-08-24 |
DE69708127D1 (de) | 2001-12-13 |
ATE208359T1 (de) | 2001-11-15 |
AU719437B2 (en) | 2000-05-11 |
EP0924178B1 (en) | 2001-11-07 |
EP0924178A1 (en) | 1999-06-23 |
KR20000035814A (ko) | 2000-06-26 |
AU3869397A (en) | 1998-03-19 |
JP3569921B2 (ja) | 2004-09-29 |
KR100488229B1 (ko) | 2005-05-10 |
CA2264686A1 (en) | 1998-03-05 |
US6375808B1 (en) | 2002-04-23 |
WO1998008789A1 (fr) | 1998-03-05 |
CN1228754A (zh) | 1999-09-15 |
EP0924178A4 (es) | 1999-07-14 |
DE69708127T2 (de) | 2002-06-20 |
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