AT26685B - Process for the production of cyano compounds from gases containing cyano and ammonia. - Google Patents
Process for the production of cyano compounds from gases containing cyano and ammonia.Info
- Publication number
- AT26685B AT26685B AT26685DA AT26685B AT 26685 B AT26685 B AT 26685B AT 26685D A AT26685D A AT 26685DA AT 26685 B AT26685 B AT 26685B
- Authority
- AT
- Austria
- Prior art keywords
- ammonia
- carbonic acid
- solution
- cyano
- production
- Prior art date
Links
Description
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wendet. Man kann auch ebensogut eine konzentriertere oder eine verdünntere Lösung in Anwendung bringen, ohne den Erfolg zu beeinträchtigen ; indessen darf die Salzmenge nicht verringert werden. Die Verwendung einer grösseren Salzmengc ist unbedenklich.
Da Schwefelwasserstoff in der Salzlösung sich nicht löst, so erhält man nach be-
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ungelöst vorhanden sind.
Ein Überschuss der Eisenverbindung in der Waschflüssigkeit ist ebenfalls unbedenklich
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Schlamm in diesem Falle einen Teil des Überschusses als Eisensulfid.
Die schlammhaltige Lösung wird, falls alles Cyan als unlösliches Fclrof'yanid vor- handen ist, vor der weiteren Behandlung nitriert und die Lauge von dem Ferrocyanid
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ammoniakgewinnung erhalten, wie os bisher der Fall war.
Die von der Destillation noch warme Lösung kann nach Zusatz der nötigen Menge Eiscnverbindung sofort wieder zum Waschen verwendet werden. Es hat sich gezeigt, dass die erhaltene Ammoniaksalzlösung desto reiner wird, je wärmer die Lösung beim Waschen war. 30-70 C haben sich als die günstigste Temperatur erwiesen. Diese Tatsache ist darin begründet, dass sich oberhalb 30 C kein Ammoniumsulfid und somit auch kein Poly-
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nicht beeinträchtigt, wenn man bei Temperaturen unter 30 C die Gase mit der Salzeisen- lösung wäscht.
PATENT-ANSPRÜCHE l. Verfahren zur Gewinnung von Cyanverbindungen aus Cyan und Ammoniak ent-
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enthaltenen Ammoniaks das Verhältnis zwischen der Eisenverbindung und dem Salzzusatz in der Waschnüssigkeit derart wählt, dass auf je 6 Moleküle Cyan im Gase wenigstens
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turns. A more concentrated or a more dilute solution can just as easily be used without impairing the success; however, the amount of salt must not be reduced. The use of a larger amount of salt is harmless.
Since hydrogen sulfide does not dissolve in the salt solution, one obtains after
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are present unresolved.
An excess of the iron compound in the washing liquid is also harmless
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Sludge in this case part of the excess as iron sulphide.
The sludge-containing solution, if all the cyanide is present as insoluble fluoride anide, is nitrated before further treatment, and the lye is nitrated from the ferrocyanide
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Get ammonia production, as was previously the case.
The solution, which is still warm from the distillation, can be used again for washing immediately after adding the necessary amount of ice cream. It has been shown that the ammonia salt solution obtained becomes cleaner the warmer the solution was during washing. 30-70 C has proven to be the most favorable temperature. This fact is based on the fact that above 30 C there is no ammonium sulfide and therefore no poly-
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not impaired if the gases are washed with the salt iron solution at temperatures below 30 C.
PATENT CLAIMS l. Process for the production of cyano compounds from cyano and ammonia
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ammonia contained in the ratio between the iron compound and the salt addition in the washing liquid is selected so that for every 6 molecules of cyan in the gas at least
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Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1904162419D DE162419C (en) | 1904-01-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT26685B true AT26685B (en) | 1906-12-10 |
Family
ID=5682807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT26685D AT26685B (en) | 1904-01-16 | 1904-01-18 | Process for the production of cyano compounds from gases containing cyano and ammonia. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT26685B (en) |
-
1904
- 1904-01-18 AT AT26685D patent/AT26685B/en active
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