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AT119929B - Process for the preparation of alkali metal cyanides. - Google Patents

Process for the preparation of alkali metal cyanides.

Info

Publication number
AT119929B
AT119929B AT119929DA AT119929B AT 119929 B AT119929 B AT 119929B AT 119929D A AT119929D A AT 119929DA AT 119929 B AT119929 B AT 119929B
Authority
AT
Austria
Prior art keywords
alkali metal
preparation
metal cyanides
parts
weight
Prior art date
Application number
Other languages
German (de)
Original Assignee
Ig Farbenindustrie Ag
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
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Application granted granted Critical
Publication of AT119929B publication Critical patent/AT119929B/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Gas Separation By Absorption (AREA)
  • Treating Waste Gases (AREA)

Description

  

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  Verfahren zur Darstellung von Alkalicyaniden. 
 EMI1.1 
 

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   Beispiel I. Über ein Gemisch aus 50 Teilen Magnesiumoxyd und 50 Teilen Natriumhydroxyd wird bei etwa   500" C   ein Gasstrom, bestehend aus 33 Volumenprozent   NH ;,   und 65 Volumenprozent CO so lange geleitet, bis in der Gasphase 100 g Wasser im Kubikmeter enthalten sind. Nach beendigter Cyanisierung wird die Schmelze ausgelaugt und auf Cyanid verarbeitet, während die Gase nach Entfernung des Wasserdampfes in den Prozess zurückkehren. 



   Beispiel II. Eine Mischung aus 50 Gewichtsteilen Ammoniakgas und 50 Gewichtsteilen Kohlenoxyd werden unter Rühren durch eine Schmelze von 25 Gewichtsteilen   Cyannatrium   und 75 Gewichtsteilen Natriumkarbonat bei etwa 6000 C geleitet und dann das Cyanid isoliert. 



   PATENT-ANSPRÜCHE :
1. Verfahren zur Darstellung von Alkalicyaniden, dadurch gekennzeichnet, dass bei Temperaturen von zweckmässig   400-8000   C ein Gemisch von Kohlenoxyd und Ammoniakgas auf ungefähr die berechnete Gewichtsmenge Alkalihydroxyde oder-Oxyde einwirken gelassen wird.



   <Desc / Clms Page number 1>
 



  Process for the preparation of alkali metal cyanides.
 EMI1.1
 

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   Example I. A gas stream consisting of 33 percent by volume of NH; and 65 percent by volume of CO is passed over a mixture of 50 parts of magnesium oxide and 50 parts of sodium hydroxide at about 500 ° C. until the gas phase contains 100 g of water per cubic meter. When the cyanization is complete, the melt is leached and processed for cyanide, while the gases return to the process after the water vapor has been removed.



   Example II. A mixture of 50 parts by weight of ammonia gas and 50 parts by weight of carbon oxide are passed, with stirring, through a melt of 25 parts by weight of sodium cyanide and 75 parts by weight of sodium carbonate at about 6000 ° C. and the cyanide is then isolated.



   PATENT CLAIMS:
1. Process for the preparation of alkali metal cyanides, characterized in that a mixture of carbon monoxide and ammonia gas is allowed to act on approximately the calculated amount by weight of alkali metal hydroxides or oxides at temperatures of appropriately 400-8000 C.

Claims (1)

2. Ausführungsform des Verfahrens laut Anspruch 1, dadurch gekennzeichnet, dass das Alkali mit indifferenten Magerungsmitteln gestreckt wird. 2. Embodiment of the method according to claim 1, characterized in that the alkali is stretched with inert leaning agents. 3. Ausführungsform des Verfahrens nach Anspruch 1 oder 2 oder 3, dadurch gekennzeichnet, dass man an Stelle von Alkalihydroxyden oder-oxyden Alkalisalze verwendet. 3. Embodiment of the method according to claim 1 or 2 or 3, characterized in that alkali metal salts are used instead of alkali metal hydroxides or oxides.
AT119929D 1926-09-22 1927-09-07 Process for the preparation of alkali metal cyanides. AT119929B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE119929X 1926-09-22

Publications (1)

Publication Number Publication Date
AT119929B true AT119929B (en) 1930-11-25

Family

ID=29276973

Family Applications (2)

Application Number Title Priority Date Filing Date
AT119929D AT119929B (en) 1926-09-22 1927-09-07 Process for the preparation of alkali metal cyanides.
AT122933D AT122933B (en) 1926-09-22 1928-05-29 Process for the preparation of alkali metal cyanides.

Family Applications After (1)

Application Number Title Priority Date Filing Date
AT122933D AT122933B (en) 1926-09-22 1928-05-29 Process for the preparation of alkali metal cyanides.

Country Status (1)

Country Link
AT (2) AT119929B (en)

Also Published As

Publication number Publication date
AT122933B (en) 1931-05-26

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