DE69008492D1 - Verfahren zum Reinigen von Flusssäure. - Google Patents
Verfahren zum Reinigen von Flusssäure.Info
- Publication number
- DE69008492D1 DE69008492D1 DE69008492T DE69008492T DE69008492D1 DE 69008492 D1 DE69008492 D1 DE 69008492D1 DE 69008492 T DE69008492 T DE 69008492T DE 69008492 T DE69008492 T DE 69008492T DE 69008492 D1 DE69008492 D1 DE 69008492D1
- Authority
- DE
- Germany
- Prior art keywords
- hydrogen fluoride
- hydrofluoric acid
- anhydrous hydrogen
- cleaning
- arsenic
- 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
- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S210/00—Liquid purification or separation
- Y10S210/902—Materials removed
- Y10S210/911—Cumulative poison
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Saccharide Compounds (AREA)
- Glass Compositions (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/443,373 US4954330A (en) | 1989-11-30 | 1989-11-30 | Process for purifying hydrogen fluoride |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69008492D1 true DE69008492D1 (de) | 1994-06-01 |
DE69008492T2 DE69008492T2 (de) | 1994-10-27 |
Family
ID=23760539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69008492T Expired - Fee Related DE69008492T2 (de) | 1989-11-30 | 1990-08-03 | Verfahren zum Reinigen von Flusssäure. |
Country Status (9)
Country | Link |
---|---|
US (1) | US4954330A (de) |
EP (1) | EP0430401B1 (de) |
JP (1) | JPH03177302A (de) |
AT (1) | ATE104925T1 (de) |
CA (1) | CA2023589A1 (de) |
DE (1) | DE69008492T2 (de) |
DK (1) | DK0430401T3 (de) |
ES (1) | ES2051473T3 (de) |
MX (1) | MX171054B (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5089241A (en) * | 1990-12-20 | 1992-02-18 | Allied-Signal Inc. | Process for converting hexafluoroarsenic acid or any salt thereof to arsenic acid or salt thereof which can then be rendered nonhazardous |
US5108559A (en) * | 1991-12-17 | 1992-04-28 | E. I. Du Pont De Nemours And Company | Process for purifying hydrogen fluoride |
FR2689885B1 (fr) * | 1992-04-14 | 1994-10-21 | Atochem North America Elf | Procédé pour inhiber la décomposition du 1,1-dichloro-1-fluoréthane. |
US6350425B2 (en) | 1994-01-07 | 2002-02-26 | Air Liquide America Corporation | On-site generation of ultra-high-purity buffered-HF and ammonium fluoride |
DE19905798A1 (de) * | 1999-02-12 | 2000-08-17 | Bayer Ag | Verfahren zum Herstellen reiner Flußsäure |
US6197204B1 (en) * | 2000-01-21 | 2001-03-06 | Kdf Fluid Treatment, Inc. | Zinc oxide fluid treatment |
US20080003172A1 (en) * | 2006-06-29 | 2008-01-03 | Honeywell International Inc. | Continuous hydrolysis of hexafluoroarsenic acid |
JP2011033576A (ja) * | 2009-08-05 | 2011-02-17 | Kagoshima Univ | ヒ素の定量方法 |
KR101287547B1 (ko) * | 2011-08-03 | 2013-07-19 | 포항공과대학교 산학협력단 | 6가 크롬 및 3가 비소의 제거 방법 |
CN103086327B (zh) * | 2013-02-18 | 2013-11-13 | 苏州晶瑞化学有限公司 | 一种超净高纯氢氟酸的制备方法 |
MX357878B (es) | 2014-12-18 | 2018-07-27 | Mexichem Fluor Sa De Capital Variable | Proceso para la purificación del ácido fluorhídrico incluyendo la obtención del subproducto ácido arsenioso. |
CN104973573B (zh) * | 2015-06-18 | 2017-03-29 | 多氟多化工股份有限公司 | 一种高纯氟化氢的制备方法及高纯氢氟酸的制备方法 |
CN115535965A (zh) * | 2022-10-13 | 2022-12-30 | 云南氟磷电子科技有限公司 | 一种氢氟酸连续除砷的方法 |
CN115636429A (zh) * | 2022-12-07 | 2023-01-24 | 山东立中新能源材料有限公司 | 六氟磷酸锂的制备工艺 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD62309A (de) * | ||||
US2777754A (en) * | 1951-07-13 | 1957-01-15 | Du Pont | Purification of anhydrous hydrogen fluoride |
FR1335675A (fr) * | 1961-07-27 | 1963-08-23 | I C P M Ind Chimiche Porto Mar | Procédé pour l'élimination de composés d'arsenic et d'antimoine de l'acide fluorhdrique moyennant la formation de complexes, facilement séparables, entre l'arsenic et l'antimoine, le fluor et un métal alcalin |
BE632837A (de) * | 1962-06-04 | 1963-10-21 | ||
US3663382A (en) * | 1969-08-19 | 1972-05-16 | Du Pont | Process of recovering hydrogen fluoride free of arsenic by distillation |
US3689370A (en) * | 1970-02-20 | 1972-09-05 | Daikin Ind Ltd | Process for purifying hydrofluoric acid by distillation with an oxidizing agent and a ferrous salt |
US3687622A (en) * | 1970-11-30 | 1972-08-29 | Du Pont | High pressure purification of hydrogen fluoride |
SU389691A1 (ru) * | 1971-04-12 | 1977-08-05 | Уральский Научно-Исследовательский И Проектный Институт Медной Промышленности | Способ очистки кислых сточных вод |
US4032621A (en) * | 1975-11-24 | 1977-06-28 | E. I. Du Pont De Nemours And Company | Preparation of hydrogen fluoride with low levels of arsenic, iron and sulfite |
US4083941A (en) * | 1977-04-18 | 1978-04-11 | E. I. Du Pont De Nemours And Company | Purification of anhydrous hydrogen fluoride |
DE2942545A1 (de) * | 1979-10-20 | 1981-06-04 | Riedel-De Haen Ag, 3016 Seelze | Verfahren zur herstellung einer gereinigten oxidationsbestaendigen anorganischen saeure und danach erhaltene saeure |
US4491570A (en) * | 1984-05-03 | 1985-01-01 | Pennwalt Corporation | Removal of arsenic from hydrogen fluoride |
US4668497A (en) * | 1984-12-25 | 1987-05-26 | Hashimoto Chemical Industries Co., Ltd. | Process for purifying hydrogen fluoride |
US4756899A (en) * | 1987-02-12 | 1988-07-12 | Allied-Signal Inc. | Manufacture of high purity low arsenic anhydrous hydrogen fluoride |
JPH055736A (ja) * | 1991-06-27 | 1993-01-14 | Omron Corp | 尿試験紙および自動尿検査装置 |
-
1989
- 1989-11-30 US US07/443,373 patent/US4954330A/en not_active Expired - Lifetime
-
1990
- 1990-08-03 EP EP90308563A patent/EP0430401B1/de not_active Expired - Lifetime
- 1990-08-03 DK DK90308563.7T patent/DK0430401T3/da active
- 1990-08-03 ES ES90308563T patent/ES2051473T3/es not_active Expired - Lifetime
- 1990-08-03 AT AT9090308563T patent/ATE104925T1/de not_active IP Right Cessation
- 1990-08-03 DE DE69008492T patent/DE69008492T2/de not_active Expired - Fee Related
- 1990-08-10 CA CA002023589A patent/CA2023589A1/en not_active Abandoned
- 1990-08-14 MX MX021967A patent/MX171054B/es unknown
- 1990-08-15 JP JP2215644A patent/JPH03177302A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0430401A1 (de) | 1991-06-05 |
DE69008492T2 (de) | 1994-10-27 |
EP0430401B1 (de) | 1994-04-27 |
ES2051473T3 (es) | 1994-06-16 |
MX171054B (es) | 1993-09-27 |
ATE104925T1 (de) | 1994-05-15 |
US4954330A (en) | 1990-09-04 |
JPH03177302A (ja) | 1991-08-01 |
DK0430401T3 (da) | 1994-05-30 |
CA2023589A1 (en) | 1991-05-31 |
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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 |