BE814449A - Procede de preparation du cyanogene par oxydation de l'acide cyanhydrique. - Google Patents
Procede de preparation du cyanogene par oxydation de l'acide cyanhydrique.Info
- Publication number
- BE814449A BE814449A BE143837A BE143837A BE814449A BE 814449 A BE814449 A BE 814449A BE 143837 A BE143837 A BE 143837A BE 143837 A BE143837 A BE 143837A BE 814449 A BE814449 A BE 814449A
- Authority
- BE
- Belgium
- Prior art keywords
- cyanogen
- oxidation
- preparation
- cyanhydric acid
- cyanhydric
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/10—Settling tanks with multiple outlets for the separated liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/10—Settling tanks with multiple outlets for the separated liquids
- B01D21/12—Settling tanks with multiple outlets for the separated liquids with moving scrapers
- B01D21/14—Settling tanks with multiple outlets for the separated liquids with moving scrapers with rotating scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/10—Settling tanks with multiple outlets for the separated liquids
- B01D21/16—Settling tanks with multiple outlets for the separated liquids provided with flocculating compartments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2433—Discharge mechanisms for floating particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2488—Feed or discharge mechanisms for settling tanks bringing about a partial recirculation of the liquid, e.g. for introducing chemical aids
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C3/00—Cyanogen; Compounds thereof
- C01C3/003—Cyanogen
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP47110233A JPS5243199B2 (xx) | 1972-11-06 | 1972-11-06 | |
JP1928973A JPS5313600B2 (xx) | 1973-02-19 | 1973-02-19 | |
NL7405745.A NL161730C (nl) | 1972-11-06 | 1974-04-29 | Werkwijze voor het bereiden van dicyaan door oxydatie van waterstofcyanide in een waterige oplossing. |
Publications (1)
Publication Number | Publication Date |
---|---|
BE814449A true BE814449A (fr) | 1974-08-16 |
Family
ID=27282571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE143837A BE814449A (fr) | 1972-11-06 | 1974-04-30 | Procede de preparation du cyanogene par oxydation de l'acide cyanhydrique. |
Country Status (7)
Country | Link |
---|---|
US (1) | US3949061A (xx) |
BE (1) | BE814449A (xx) |
CA (1) | CA1006329A (xx) |
DE (1) | DE2355040C3 (xx) |
FR (1) | FR2268750B1 (xx) |
GB (1) | GB1434337A (xx) |
NL (1) | NL161730C (xx) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2340232B1 (en) * | 2008-10-22 | 2017-07-26 | Lonza AG | Process for removing hydrogen cyanide from ethanedinitrile |
EP2184261A1 (en) * | 2008-11-10 | 2010-05-12 | Lonza Ltd. | Process for the preparation of cyanogen from hydrocyanic acid |
CZ303646B6 (cs) | 2011-12-13 | 2013-01-23 | Masarykova Univerzita | Zpusob výroby ethandinitrilu oxidací kyanovodíku |
CN115818668B (zh) * | 2022-10-27 | 2024-06-25 | 万华化学集团股份有限公司 | 一种甲醇氨氧化制备氢氰酸的方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2953435A (en) * | 1958-12-12 | 1960-09-20 | Pure Oil Co | Method of preparing cyanogen |
DE1163302B (de) * | 1960-03-15 | 1964-02-20 | Dr Emanuel Pfeil | Verfahren zur Herstellung von Dicyan |
GB1084477A (en) * | 1965-08-02 | 1967-09-20 | Sagami Chem Res | Improvements in or relating to the preparation of cyanogen |
US3630671A (en) * | 1969-08-01 | 1971-12-28 | Union Oil Co | Oxidation of hydrogen cyanide to cyanogen in a liquid medium utilizing a group viii noble metal catalyst in complex association with a biphyllic ligand |
US3615192A (en) * | 1969-08-01 | 1971-10-26 | Union Oil Co | Oxidation of hydrogen cyanide to cyanogen in a liquid medium utilizing a copper catalyst |
US3769388A (en) * | 1971-07-28 | 1973-10-30 | Union Oil Co | Oxidation of hydrogen cyanide to cyanogen in a liquid medium containing a soluble nitrate salt or nitric acid |
-
1973
- 1973-11-02 US US05/412,129 patent/US3949061A/en not_active Expired - Lifetime
- 1973-11-03 DE DE2355040A patent/DE2355040C3/de not_active Expired
-
1974
- 1974-04-29 FR FR7414865A patent/FR2268750B1/fr not_active Expired
- 1974-04-29 NL NL7405745.A patent/NL161730C/xx not_active IP Right Cessation
- 1974-04-29 CA CA198,399A patent/CA1006329A/en not_active Expired
- 1974-04-30 BE BE143837A patent/BE814449A/xx not_active IP Right Cessation
- 1974-05-02 GB GB1930174A patent/GB1434337A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL7405745A (nl) | 1975-10-31 |
GB1434337A (en) | 1976-05-05 |
US3949061A (en) | 1976-04-06 |
NL161730B (nl) | 1979-10-15 |
DE2355040A1 (de) | 1974-05-30 |
NL161730C (nl) | 1980-03-17 |
FR2268750B1 (xx) | 1977-06-24 |
DE2355040C3 (de) | 1978-06-22 |
CA1006329A (en) | 1977-03-08 |
FR2268750A1 (xx) | 1975-11-21 |
DE2355040B2 (de) | 1977-10-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE20 | Patent expired |
Owner name: ASAHI KASEI KOGYO K.K. Effective date: 19940430 |