AT93228B - Method and device for the simultaneous preparation of cellulose and dextrose from wood. - Google Patents

Method and device for the simultaneous preparation of cellulose and dextrose from wood.

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Publication number
AT93228B
AT93228B AT93228DA AT93228B AT 93228 B AT93228 B AT 93228B AT 93228D A AT93228D A AT 93228DA AT 93228 B AT93228 B AT 93228B
Authority
AT
Austria
Prior art keywords
wood
dextrose
cellulose
simultaneous preparation
solution
Prior art date
Application number
Other languages
German (de)
Inventor
Franz Kroepfl
Original Assignee
Franz Kroepfl
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 Franz Kroepfl filed Critical Franz Kroepfl
Application granted granted Critical
Publication of AT93228B publication Critical patent/AT93228B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren und Vorrichtung zur gleichzeitigen Darstellung von Zellulose und Dextrose aus Holz. 
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 werden die im Holz enthaltenen Harze verseift und gehen in Lösung, das Holz wird der späteren Einwirkung des Chlors und der Salzsäure zugänglich gemacht. Ist dieser Prozess beendet, wird der Strom umgekehrt. Es findet zumeist die Neutralisation 
 EMI2.1 
 statt. 



   Nach beendeter Neutralisation erfolgt die Abscheidung von freiem Chlor, welches sich mit dem Wasser gemäss 
 EMI2.2 
 umsetzt. Die Reaktion wird durch die erhöhte Temperatur sowie der Anwesenheit oxydierbarer Substanzen beschleunigt. 



   In diesem Teil des Prozesses findet eine rasche   Aufschliessung   des Holzes statt. 



   Sobald sich eine genügende Menge von Salzsäure   (2-3% B"CQ   gebildet hat, wird der Strom ausgeschaltet, die sich mittlerweile im Kessel B abgeschiedene Natronlauge wird abgelassen und das Kochen ohne Strom fortgesetzt, bis sich eine genügende Menge Dextrose gebildet hat. 



   Nach Beendigung des Prozesses wird die abgelassene Lösung der Kocher A mit der Lösung des Kochers B neutralisiert und ist zur Vergährung bereit. 



   Der Rückstand ist Zellulose. Es ergeben sich   sonach   keinerlei Abfälle. 



   PATENT-ANSPRÜCHE :
1. Verfahren zur gleichzeitigen Darstellung von Zellulose und Dextrose aus Holz durch Behandlung mit   Kochsalzlösung   und Elektrolyse, dadurch gekennzeichnet, dass das Holz zuerst mit der entstandenen Natronlauge bis zur Verseifung der Harze und Öle behandelt, hierauf mittels der erhaltenen Chlorate 
 EMI2.3 
 lauge und Salzsäure durch Umschalten der Elektroden ohne Auswechslung der Flüssigkeiten im Kocher und ohne Unterbrechung der Elektrolyse erfolgt.



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  Method and device for the simultaneous preparation of cellulose and dextrose from wood.
 EMI1.1
 

 <Desc / Clms Page number 2>

 the resins contained in the wood are saponified and go into solution, the wood is made accessible to the later action of chlorine and hydrochloric acid. When this process is finished, the current is reversed. It mostly finds neutralization
 EMI2.1
 instead of.



   After the end of neutralization, free chlorine is separated out, which is mixed with the water
 EMI2.2
 implements. The reaction is accelerated by the increased temperature and the presence of oxidizable substances.



   In this part of the process, the wood breaks down quickly.



   As soon as a sufficient amount of hydrochloric acid (2-3% B "CQ has formed, the current is switched off, the caustic soda which has meanwhile separated in boiler B is drained off and the boiling continues without electricity until a sufficient amount of dextrose has formed.



   After the process has ended, the drained solution from digester A is neutralized with the solution from digester B and is ready for fermentation.



   The residue is cellulose. There is therefore no waste.



   PATENT CLAIMS:
1. A method for the simultaneous preparation of cellulose and dextrose from wood by treatment with saline solution and electrolysis, characterized in that the wood is first treated with the resulting sodium hydroxide solution until the resins and oils are saponified, then by means of the chlorates obtained
 EMI2.3
 caustic and hydrochloric acid can be done by switching the electrodes without changing the liquids in the cooker and without interrupting the electrolysis.

 

Claims (1)

2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, bestehend aus den Kesseln A und Al mit den miteinander verbundenen Elektroden D und Du fund dem Kessel B mit der entgegengesetzten Elektrode E, wobei sämtliche Kessel durch absperrbare Rohre beliebig miteinander verbunden werden können. EMI2.4 2. Device for performing the method according to claim 1, consisting of the boilers A and Al with the interconnected electrodes D and you fund the boiler B with the opposite electrode E, all boilers can be connected to each other by lockable pipes. EMI2.4
AT93228D 1920-08-24 1920-08-24 Method and device for the simultaneous preparation of cellulose and dextrose from wood. AT93228B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT93228T 1920-08-24

Publications (1)

Publication Number Publication Date
AT93228B true AT93228B (en) 1923-06-25

Family

ID=3613135

Family Applications (1)

Application Number Title Priority Date Filing Date
AT93228D AT93228B (en) 1920-08-24 1920-08-24 Method and device for the simultaneous preparation of cellulose and dextrose from wood.

Country Status (1)

Country Link
AT (1) AT93228B (en)

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