GB697505A - Process for the recovery of hydrocyanic acid from a gaseous mixture comprising the same together with carbon dioxide and ammonia - Google Patents
Process for the recovery of hydrocyanic acid from a gaseous mixture comprising the same together with carbon dioxide and ammoniaInfo
- Publication number
- GB697505A GB697505A GB19940/51A GB1994051A GB697505A GB 697505 A GB697505 A GB 697505A GB 19940/51 A GB19940/51 A GB 19940/51A GB 1994051 A GB1994051 A GB 1994051A GB 697505 A GB697505 A GB 697505A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ammonia
- carbon dioxide
- hydrogen cyanide
- hydrocyanic acid
- water
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C3/00—Cyanogen; Compounds thereof
- C01C3/02—Preparation, separation or purification of hydrogen cyanide
- C01C3/04—Separation from gases
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/26—Carbonates or bicarbonates of ammonium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C3/00—Cyanogen; Compounds thereof
- C01C3/02—Preparation, separation or purification of hydrogen cyanide
- C01C3/0208—Preparation in gaseous phase
- C01C3/0237—Preparation in gaseous phase from carbon monoxide and ammonia
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Hydrogen cyanide is recovered from mixtures comprising the same together with carbon dioxide and ammonia, by the addition of ammonia such that the total quantity thereof is sufficient to combine with the carbon dioxide being separated as ammonium carbonate in a wash tower in the presence of water at a temperature of between 30 and 70 DEG C. The washed hydrogen cyanide-containing gas is freed from traces of ammonia by washing with hot water. The gas is then washed with cold water and the aqueous hydrocyanic acid solution produced worked up in known manner into pure anhydrous hydrocyanic acid. The additional ammonia added is preferably supplied to the wash tower in the form of aqueous ammonia and may be recycled by recovering ammonia from the wash liquor in known manner. The wash liquor may be freed from dissolved hydrogen cyanide by the introduction of gases which are insoluble or difficultly soluble in water. When the hydrogen cyanide being recovered has been synthesized from carbon monoxide and ammonia, the gases employed may be the residual hydrogen and carbon monoxide leaving the separation process.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE697505X | 1950-10-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB697505A true GB697505A (en) | 1953-09-23 |
Family
ID=6607943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19940/51A Expired GB697505A (en) | 1950-10-13 | 1951-08-23 | Process for the recovery of hydrocyanic acid from a gaseous mixture comprising the same together with carbon dioxide and ammonia |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB697505A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3112177A (en) * | 1959-11-11 | 1963-11-26 | Toyo Koatsu Ind Inc | Method of separating ammonia from hydrogen cyanide |
| US3147069A (en) * | 1960-01-18 | 1964-09-01 | Sueddeutsche Kalkstickstoff | Continuous processing of the waste gases from the white calcium cyanamide manufacture |
-
1951
- 1951-08-23 GB GB19940/51A patent/GB697505A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3112177A (en) * | 1959-11-11 | 1963-11-26 | Toyo Koatsu Ind Inc | Method of separating ammonia from hydrogen cyanide |
| US3147069A (en) * | 1960-01-18 | 1964-09-01 | Sueddeutsche Kalkstickstoff | Continuous processing of the waste gases from the white calcium cyanamide manufacture |
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