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.Info
- 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
Links
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- Processing Of Solid Wastes (AREA)
Description
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Verfahren und Vorrichtung zur gleichzeitigen Darstellung von Zellulose und Dextrose aus Holz.
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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
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statt.
Nach beendeter Neutralisation erfolgt die Abscheidung von freiem Chlor, welches sich mit dem Wasser gemäss
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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
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lauge und Salzsäure durch Umschalten der Elektroden ohne Auswechslung der Flüssigkeiten im Kocher und ohne Unterbrechung der Elektrolyse erfolgt.
<Desc / Clms Page number 1>
Method and device for the simultaneous preparation of cellulose and dextrose from wood.
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<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
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instead of.
After the end of neutralization, free chlorine is separated out, which is mixed with the water
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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
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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)
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) |
-
1920
- 1920-08-24 AT AT93228D patent/AT93228B/en active
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