AT41479B

AT41479B - Process for the production of alcohol from the waste eyes resulting from the production of sulphite cellulose.

Info

Publication number: AT41479B
Authority: AT
Original assignee: Stora Kopparbergs Bergslags Ab
Priority date: 1909-01-29
Filing date: 1909-01-29
Publication date: 1910-03-25

Description

  

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  Verfahren zur Herstellung von Alkohol aus den bei der Gewinnung von Sulfitzellulose entstehenden Abfallaugen. 



   Die vorliegende Erfindung bezieht sich auf ein Verfahren zur Herstellung von Alkohol aus den Abfallaugen, die nach der Behandlung von Holz mit   loslichen Suihten resultieren.   Der- 
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 zuckers in Alkohol. 



   Um die Gärung zu   ermöglichen, muss Kalziumbisuint   und schweflige Säure aus den Laugen entfernt werden. Dies ist bisher in der Weise bewirkt worden, dass die Lauge, deren Temperatur 100" ('nicht übersteigen soll, mit Kalk, Kalkstein oder anderen neutralisierenden Stoffen, wie   Hvdroxvden   oder Karbonaten von   Strontium, Magnesium, Barvum versetzt wird.   bis die Lösung eine schwach saure, neutrale oder schwach alkalische Reaktion erhält, wobei Monosulfit ausgeschieden wird. 



   Gemäss vorliegender Erfindung wird die Neutralisation durch Zusetzen eines   kale-haltigen   
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 oder eine Hase zu, bis sie eine   ucutr. de oder schwach saure Reaktion   erhält ; dann wird der entstandene Niederschlag   abgetrennt, beispielsweise durch Dekantieren.   
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   @ Die von dem Niederschalg befreite Lösung,   die Traubenzucker enthält und die nun eine
Temperatur von etwa   900   hat. wird dann bis auf eine für die Gärung geeignete Temperatur (etwa 25 C) abgekühlt. Dies kann zweckmässig unter gleichzeitiger Aufnahme von Luft (welche 
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**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



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  Process for the production of alcohol from the waste eyes resulting from the production of sulphite cellulose.



   The present invention relates to a process for the production of alcohol from the waste eyes resulting from treating wood with soluble suethes. The-
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 sugar in alcohol.



   Calcium bisuint and sulphurous acid must be removed from the lye to enable fermentation. So far, this has been done in such a way that the lye, the temperature of which should not exceed 100 "(', is mixed with lime, limestone or other neutralizing substances, such as hydroxide or carbonates of strontium, magnesium, barium, until the solution becomes weak Acid, neutral or weakly alkaline reaction, whereby monosulfite is excreted.



   According to the present invention, the neutralization is carried out by adding a calcium-containing
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 or a bunny until they get a ucutr. de or weakly acidic reaction; then the precipitate formed is separated off, for example by decanting.
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   @ The solution freed from the precipitate, which contains grape sugar and which is now a
Has a temperature of about 900. is then cooled down to a suitable temperature for fermentation (around 25 C). This can expediently with simultaneous intake of air (which
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** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims

PATENT CLAIM: Process for the production of alcohol from the waste eyes resulting from the extraction of sulphite cellulose, characterized in that a lime-containing waste product (lime sludge) from the sulphate or sodium bicarbonate is added to the lye containing dextrose for the purpose of neutralization. <Desc / Clms Page number 2> Cellulose production adds in order not only to neutralize it, but also to enrich it with the nutrients required for the subsequent alcohol fermentation, so that the liquor is then neutralized or made slightly acidic if necessary, after which it, after it has been separated from the precipitate formed during neutralization, except for a temperature suitable for fermentation is cooled, whereby it can be concentrated and saturated with air at the same time, and then by adding enzyme or yeast and nutrient extract,

which has been prepared from the yeast produced during a previous fermentation, possibly brewer's yeast, to be fermented, whereupon the alcohol formed is distilled off.