AT99907B - Process for the production of ammonia from distillation residues (stillage) of sugar beet or molasses. - Google Patents

Process for the production of ammonia from distillation residues (stillage) of sugar beet or molasses.

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Publication number
AT99907B
AT99907B AT99907DA AT99907B AT 99907 B AT99907 B AT 99907B AT 99907D A AT99907D A AT 99907DA AT 99907 B AT99907 B AT 99907B
Authority
AT
Austria
Prior art keywords
sep
ammonia
molasses
sugar beet
production
Prior art date
Application number
Other languages
German (de)
Inventor
Gaston Philippe Guignard
Original Assignee
Gaston Philippe Guignard
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 Gaston Philippe Guignard filed Critical Gaston Philippe Guignard
Application granted granted Critical
Publication of AT99907B publication Critical patent/AT99907B/en

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  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Gewinnung von Ammoniak aus   Destillationsrückständen   (Schlempen) von Zuckerrüben oder Melassen. 
 EMI1.1 
 

 <Desc/Clms Page number 2> 

   : Man verfährt   in folgender Weise : Eine rückständige Lauge von Zuckerrübenmelasse, deren ursprüngliche Zusammensetzung etwa im 
 EMI2.1 
 
<tb> 
<tb> Mittel <SEP> :...................... <SEP> Wasser................84 <SEP> %,
<tb> gelöste <SEP> Stoffe.................... <SEP> 16%
<tb> 
 ist, wird auf eine mittlere Konzentrierung : 
 EMI2.2 
 
<tb> 
<tb> Wasser <SEP> : <SEP> 50 <SEP> %,
<tb> In <SEP> Lösung <SEP> befindliche <SEP> Stoffe <SEP> 50 <SEP> %.
<tb> 



  Darunter <SEP> Salze <SEP> .........................................11 <SEP> %,
<tb> organische <SEP> Stoffe <SEP> ..............................................39 <SEP> %
<tb> 
 gebracht. Unter diesen Bedingungen wird ausser dem Wasser, welches bei den Reaktionen gebraucht wird, noch ein geringer Überschuss an Wasserdampf verbleiben. 



   Das so erhaltene Material, d. h. die konzentrierte rückständige Lauge, wird in eine Batterie von Retorten geschickt, die auf 450  bis 550  C erhitzt werden. 



   Unter der Einwirkung des   überschüssigen   Wasserdampfes bei dem angegebenen Vakuum trennen sich die in den behandelten Produkten enthaltenen, mit Stickstoff gesättigten Stoffe ihrer Natur nach in folgender Weise voneinander : a) Die   eiweisshaltigen   Stoffe geben Indol, Skatol und Pyrrol ; b) Die Amine und Amide, wie   z.   B. das- Asparagin, die Asparaginsäure usw. geben Ammoniak ;   e)   Das Betain liefert Essigsäure, Ammoniak und Methylalkohol. 



   Die von Trimethylamin freien Destillationsprodukte werden in einen Kühler und in Schwefelsäurewäscher geschickt ; man erhält auf diese Weise eine saure Lösung, die alle die mit Stickstoff gesättigten Stoffe und die Essigsäure enthält. Diese saure Flüssigkeit wird destilliert, um das Wasser, die Essigsäure und alle flüchtigen Produkte, ausser dem Ammoniak in Form von schwefelsaurem Ammoniak darin gelöst ist, sowie die im Rückstande befindlichen Produkte, wie das Skatol und das Indol, zu verdampfen.



   <Desc / Clms Page number 1>
 



  Process for the production of ammonia from distillation residues (stillage) of sugar beet or molasses.
 EMI1.1
 

 <Desc / Clms Page number 2>

   : The procedure is as follows: A residual liquor from sugar beet molasses, the original composition of which is approximately in
 EMI2.1
 
<tb>
<tb> Medium <SEP>: ...................... <SEP> water ................ 84 <SEP>%,
<tb> dissolved <SEP> substances .................... <SEP> 16%
<tb>
 is, on a medium concentration:
 EMI2.2
 
<tb>
<tb> water <SEP>: <SEP> 50 <SEP>%,
<tb> <SEP> substances contained in <SEP> solution <SEP> <SEP> 50 <SEP>%.
<tb>



  Including <SEP> salts <SEP> ......................................... 11 <SEP>%,
<tb> organic <SEP> substances <SEP> ....................................... ....... 39 <SEP>%
<tb>
 brought. Under these conditions, in addition to the water that is used in the reactions, a small excess of water vapor will remain.



   The material thus obtained, i.e. H. the concentrated residual caustic is sent to a battery of retorts, which are heated to 450 to 550 C.



   Under the action of the excess water vapor at the specified vacuum, the nitrogen-saturated substances contained in the treated products separate from one another by their nature in the following way: a) The protein-containing substances give indole, skatole and pyrrole; b) The amines and amides, such as. B. asparagine, aspartic acid, etc. give ammonia; e) The betaine provides acetic acid, ammonia and methyl alcohol.



   The trimethylamine-free distillation products are sent to a condenser and sulfuric acid scrubber; in this way an acidic solution is obtained which contains all the substances saturated with nitrogen and acetic acid. This acidic liquid is distilled in order to evaporate the water, the acetic acid and all volatile products, except the ammonia in the form of sulfuric acid ammonia, as well as the remaining products such as the skatole and the indole.

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Gewinnung von Ammoniak aus Destillationsrückständen (Schlempen) von Zuckerrüben oder Melassen durch Destillation unter Vakuum in Gegenwart von Wasserdampf, dadurch gekennzeichnet, dass die Destillation bei einem Minimalunterdruck von 620 mm Quecksilber (also einem Maximaldruck von 140 mm Quecksilber) und bei einer Temperatur zwischen 450 und 550 C erfolgt, und dass EMI2.3 PATENT CLAIM: Process for the production of ammonia from distillation residues (Schlempen) of sugar beet or molasses by distillation under vacuum in the presence of steam, characterized in that the distillation is carried out at a minimum negative pressure of 620 mm mercury (i.e. a maximum pressure of 140 mm mercury) and at a temperature between 450 and 550 C takes place, and that EMI2.3
AT99907D 1923-03-31 1923-03-31 Process for the production of ammonia from distillation residues (stillage) of sugar beet or molasses. AT99907B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT99907T 1923-03-31

Publications (1)

Publication Number Publication Date
AT99907B true AT99907B (en) 1925-05-11

Family

ID=3618997

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99907D AT99907B (en) 1923-03-31 1923-03-31 Process for the production of ammonia from distillation residues (stillage) of sugar beet or molasses.

Country Status (1)

Country Link
AT (1) AT99907B (en)

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