GB896226A - A process for stripping hydrocyanic acid and hydrogen sulphide from waste waters containing the same - Google Patents
A process for stripping hydrocyanic acid and hydrogen sulphide from waste waters containing the sameInfo
- Publication number
- GB896226A GB896226A GB1296860A GB1296860A GB896226A GB 896226 A GB896226 A GB 896226A GB 1296860 A GB1296860 A GB 1296860A GB 1296860 A GB1296860 A GB 1296860A GB 896226 A GB896226 A GB 896226A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gases
- column
- stage
- hydrocyanic acid
- inert
- 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
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/001—Purifying combustible gases containing carbon monoxide working-up the condensates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
Abstract
All the hydrogen sulphide and part of the hydrocyanic acid are stripped from waste water containing them in a first stage by means of gases which are practically inert to hydrocyanic acid, the remaining hydrocyanic acid is removed in a second stage by means of gases which are also inert to hydrocyanic acid and the gases from the first stage are used to agitate the acid bath in a saturator for the production of ammonium sulphate so that the hydrogen sulphide content of the gases is used up; the hydrocyanic acid from the second stage is either purified or used to make cyanogen compounds. Either or both of the first and second stages may be effected as a plurality of steps. The first stage may be carried out in a continously operating stripping column, e.g. a packed column, a bubble-tray column or a multi-stage spraying column without insertions, such that the inert gases are introduced at the base of the column and the gases enriched in hydrogen sulphide are discharged at the top of the column. Alternatively the inert gases may be introduced into the column at a plurality of points situated at different levels and the gases enriched in hydrogen sulphide discharged at a short distance below the next level at which the inert gases are introduced. Air is specified as a suitable inert gas. An example is given.ALSO:All the hydrogen sulphide and part of the hydrocyanic acid are stripped from waste water containing them in a first stage by means of gases which are practically inert to hydrocyanic acid, the remaining hydrocyanic acid is removed in a second stage by means of gases which are also inert to hydrocyanic acid and the gases from the first stage are used to agitate the acid baths in a saturator for the production of ammonium sulphate so that the hydrogen sulphide of the gases is used up; the hydrocyanic acid from the second stage is either purified or used to make cyanogen compounds. Either or both of the first and second stages may be effected in a plurality of steps. The first stage may be carried out in a continuously operating stripping column, e.g. a packed column, a bubble-tray column or multi-stage spraying column without insertions such that the inert gases are introduced at the base of the column and gases enriched in hydrogen sulphide are discharged at the top of the column. Alternatively the inert gases may be introduced into the column at a plurality of points situated at different levels and the gases enriched in hydrogen sulphide discharged at a short distance below the next level at which the inert gases are introduced. Air is specified as a suitable inert gas. An example is given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG26819A DE1136284B (en) | 1959-04-13 | 1959-04-13 | Process for the continuous removal of hydrogen sulfide and hydrogen cyanide from acidic coke oven and similar waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB896226A true GB896226A (en) | 1962-05-09 |
Family
ID=7123035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1296860A Expired GB896226A (en) | 1959-04-13 | 1960-04-12 | A process for stripping hydrocyanic acid and hydrogen sulphide from waste waters containing the same |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE589650A (en) |
| DE (1) | DE1136284B (en) |
| GB (1) | GB896226A (en) |
| NL (1) | NL250428A (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE26422C (en) * | KUNHEIM & CO. in Berlin SW | Process for purifying gas water from ammonium sulphide | ||
| DE191078C (en) * | ||||
| AT118009B (en) * | 1929-06-24 | 1930-06-10 | Oesterr Alpine Montan | Process for the purification of wastewater containing cyanide. |
-
0
- NL NL250428D patent/NL250428A/xx unknown
-
1959
- 1959-04-13 DE DEG26819A patent/DE1136284B/en active Pending
-
1960
- 1960-04-12 GB GB1296860A patent/GB896226A/en not_active Expired
- 1960-04-12 BE BE589650A patent/BE589650A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1136284B (en) | 1962-09-06 |
| BE589650A (en) | 1960-08-01 |
| NL250428A (en) |
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