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
Application number
Other languages
German (de)
Inventor
Walther Feld
Original Assignee
Walther Feld
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE1904162419D external-priority patent/DE162419C/de
Application filed by Walther Feld filed Critical Walther Feld
Application granted granted Critical
Publication of AT26685B publication Critical patent/AT26685B/en

Links

Description

  

   <Desc/Clms Page number 1> 
 
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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- 
 EMI3.3 
 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- 
 EMI3.8 
 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- 
 EMI3.9 
 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
 EMI3.3
 are present unresolved.



   An excess of the iron compound in the washing liquid is also harmless
 EMI3.4
 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-
 EMI3.8
 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
 EMI3.9
 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)

alkali- und Magnosiasalzen der Zusatz von Kohlensäure zu dem Gase, falls das Gas weniger Kohlensäure enthält, als dem Ammoniak zur Bildung von kohlensaurem Ammoniak entspricht. <Desc/Clms Page number 4> EMI4.1 alkali- und Magnesiasalzen die Sättigung der Lösung mit Kohlensäure oder der Zusatz von Bikarbonaten zu der Waschlösung, falls das Gas weniger Kohlensäure enthält, als dem Ammoniak zur Bildung von kohlensaurem Ammoniak entspricht. EMI4.2 warmen Salzeisenlösung zu dem Zwecke, eine reinere Ammoniaklösung zu erhalten. Alkaline and Magnosia salts the addition of carbonic acid to the gas, if the gas contains less carbonic acid than the ammonia corresponds to the formation of carbonic acid ammonia. <Desc / Clms Page number 4> EMI4.1 alkali and magnesia salts saturation of the solution with carbonic acid or the addition of bicarbonates to the scrubbing solution if the gas contains less carbonic acid than the ammonia corresponds to the formation of carbonic acid ammonia. EMI4.2 warm salt iron solution for the purpose of obtaining a purer ammonia solution. 5, Verfahren nach den Ansprüchen 1-4, gekennzeichnet durch die Behandlung des zu waschenden Gases mit der, Salze und Eisonverbindungen enthaltenden Waschflüssigkeit, ehe die Gase unter SU C abgekühlt sind. 5. Process according to claims 1-4, characterized by the treatment of the gas to be washed with the washing liquid containing salts and ice compounds before the gases have cooled below SU C.
AT26685D 1904-01-16 1904-01-18 Process for the production of cyano compounds from gases containing cyano and ammonia. AT26685B (en)

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)

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