AT62171B - Process and preparation of ammonium sulfate. - Google Patents

Process and preparation of ammonium sulfate.

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Publication number
AT62171B
AT62171B AT62171DA AT62171B AT 62171 B AT62171 B AT 62171B AT 62171D A AT62171D A AT 62171DA AT 62171 B AT62171 B AT 62171B
Authority
AT
Austria
Prior art keywords
ammonium
preparation
ammonium sulfate
sulphate
bisulphite
Prior art date
Application number
Other languages
German (de)
Original Assignee
Basf 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 Basf Ag filed Critical Basf Ag
Application granted granted Critical
Publication of AT62171B publication Critical patent/AT62171B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren und Darstellung von Ammoniumsulfat. 



   Bekanntlich entsteht beim Erhitzen von Ammoniak und   schwùiliger S ! iure beziehungs,   weise Ammoniumbisulfit mit Wasser neben Schwefel und freier Schwefelsäure Ammoniumsulfat. Geht man von konzentrierten Lösungen des Bisulfites aus, so kristallisiert, eventuell nach vorangegangener Neutralisation der freien Schwefelsäure, zwar ein Teil des Ammoniumsulfats aus, der andere aber, der in der Mutterlauge enthalten ist, konnte nur durch Eindampfen gewonnen werden. 



   Es hat sich nun gezeigt, dass man den kostspieligen Eindampfprozess in der Weise umgehen kann, dass man die Ammoniumsulfatlauge direkt bzw. nach Entfernung des auskristallisierten Salzes mit Ammoniak und schwefliger Säure bzw. mit Ammoniumbisulfit, das ammoniumsulfithaltig sein kann, behandelt, so dass sie mit dem Bisulfit völlig oder nahezu gesättigt wird. Es wird hiedurch eine reichliche Abscheidung von in der Lange enthaltenem Ammoniumsulfat bewirkt. 



   Das Verfahren bietet den weiteren Vorteil, dass man   als Filtrat   eine konzentrierte 
 EMI1.1 
 weiters zu einer neuen Umsetzung zu Ammoniumsulfat benutzt werden kann. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process and preparation of ammonium sulfate.



   As is well known, when ammonia and sultry S! iure or ammonium bisulfite with water in addition to sulfur and free sulfuric acid ammonium sulfate. If one starts from concentrated solutions of the bisulphite, then some of the ammonium sulphate crystallizes, possibly after previous neutralization of the free sulfuric acid, but the other part, which is contained in the mother liquor, could only be obtained by evaporation.



   It has now been shown that the costly evaporation process can be avoided by treating the ammonium sulphate liquor directly or after removing the crystallized salt with ammonia and sulphurous acid or with ammonium bisulphite, which may contain ammonium sulphite, so that it is treated with the bisulfite is completely or almost saturated. This causes an abundant separation of the ammonium sulphate contained in the length.



   The process offers the further advantage that the filtrate is a concentrated one
 EMI1.1
 can also be used for a new conversion to ammonium sulfate.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Darstellung von Ammoniumsulfat durch Erhitzen von Ammoniumbisulfit, dessen Gemischen mit neutralem Sulfit oder den betreffenden Bildungskomponenten in Wasser, dadurch gekennzeichnet, dass man nach erfojgter Ammoninmsulfatbildung zur Ammoniumsulfatlösung, eventuell nach Abtrennung des Schwefels, Ammonillmbisulfit, Gemische desselben mit Ammoniumsulfat oder die entsprechenden Uildungskomponenten zufligt und nach Abtrennung des hindurch abgeschiedenen Ammoniumsulfat die erhaltene Lösung von Ammoniumbisuint und oventuell Ammoniumsulfit für eine neue Darstellung von Ammoniumsulfat verwendet **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the preparation of ammonium sulphate by heating ammonium bisulphite, its mixtures with neutral sulphite or the relevant formation components in water, characterized in that after ammonium sulphate formation is carried out to the ammonium sulphate solution, possibly after separation of the sulfur, ammonium bisulphite, mixtures of the same with ammonium sulphate or the corresponding formation components are added and after separating off the ammonium sulfate which has separated out, the resulting solution of ammonium bisuint and possibly ammonium sulfite is used for a new preparation of ammonium sulfate ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT62171D 1912-06-11 1912-12-30 Process and preparation of ammonium sulfate. AT62171B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE62171X 1912-06-11

Publications (1)

Publication Number Publication Date
AT62171B true AT62171B (en) 1913-11-10

Family

ID=5631296

Family Applications (1)

Application Number Title Priority Date Filing Date
AT62171D AT62171B (en) 1912-06-11 1912-12-30 Process and preparation of ammonium sulfate.

Country Status (1)

Country Link
AT (1) AT62171B (en)

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