DE446476C - Process for obtaining pulp from chopped wood using chlorine - Google Patents

Process for obtaining pulp from chopped wood using chlorine

Info

Publication number
DE446476C
DE446476C DEW54949D DEW0054949D DE446476C DE 446476 C DE446476 C DE 446476C DE W54949 D DEW54949 D DE W54949D DE W0054949 D DEW0054949 D DE W0054949D DE 446476 C DE446476 C DE 446476C
Authority
DE
Germany
Prior art keywords
chlorine
wood
chopped wood
obtaining pulp
pulp
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEW54949D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PERCY HEINRICH WAENTIG DR
Original Assignee
PERCY HEINRICH WAENTIG DR
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 PERCY HEINRICH WAENTIG DR filed Critical PERCY HEINRICH WAENTIG DR
Priority to DEW54949D priority Critical patent/DE446476C/en
Priority to GB1562/21A priority patent/GB178196A/en
Application granted granted Critical
Publication of DE446476C publication Critical patent/DE446476C/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/18—Pulping cellulose-containing materials with halogens or halogen-generating compounds

Landscapes

  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Description

Verfahren zur Gewinnung von Zellstoff aus gehacktem Holz mittels Chlors. Gegenstand der Erfindung ist ein Verfahren zur Gewinnung von langfaserigem Zellstoff aus Holz. Als Ausgangsmaterial dient Holz, welches mit Hilfe von Chlor aufgeschlossen wird. Das Holz wird nach der Erfindung in Form von Hackspänen benutzt. Die Einwirkung des Chlorgases erfolgt unter Druck.. Hackspäne lassen sich leichter und billiger herstellen als lange, dünne Späne, wie Hobelspäne. Bei der Einwirkung von Chlor unter Druck verläuft das Verfahren leicht und mit guter Ausbeute.Process for obtaining pulp from chopped wood using chlorine. The invention relates to a process for the production of long-fiber pulp wooden. Wood, which is digested with the help of chlorine, is used as the starting material will. According to the invention, the wood is used in the form of wood chips. The impact of the chlorine gas takes place under pressure. Wood chips can be extracted more easily and cheaply produce as long, thin chips, like wood shavings. When exposed to chlorine under pressure the process is easy and with good yield.

Die Hackspäne werden zweckmäßig vor der Chloreinwirkung eingeweicht, was vorteilhaft mit Hilfe verdünnter Natronlauge geschehen kann.The wood chips are expediently soaked before the effect of chlorine, which can be done advantageously with the help of dilute sodium hydroxide solution.

Das Verfahren wird beispielsweise wie folgt durchgeführt: Hackspäne werden am besten durch kurzes Erwärmen mit verdünnter Natronlauge eingeweicht und nach dem Einweichen in feuchtem Zustande bei Zimmertemperatur der Einwirkung von Chlorgas unter einem Druck von etwa 6 Atm. in einem säure- und chlorbeständigen Gefäß ausgesetzt. Das Fasergut wird darauf von der gebildeten Salzsäure durch Auswaschen befreit und ohne Zuführung von Wärme nochmals mit der zum Einweichen verwendeten Natronlauge behandelt.The procedure is carried out, for example, as follows: wood chips are best soaked by briefly warming them up with dilute sodium hydroxide solution and after soaking in a damp state at room temperature the action of Chlorine gas under a pressure of about 6 atm. in an acid and chlorine resistant Vessel exposed. The fiber material is then washed out of the hydrochloric acid formed freed and without the addition of heat again with the one used for soaking Sodium hydroxide treated.

Nach der Zeitschrift »Textile Forschung« 19119, S. 32, läßt sich gröberes Material nach dem Chlorverfahren auch aufschließen, wenn man die Einwirkungsdauer des Chlors verlängert, doch sind der Verlängerung der Chlorierungsdauer durch die ungünstigen Nebenwirkungen der bei der Chloreinwirkung entstehenden Nebenprodukte ganz bestimmte Grenzen gezogen. Diese ungünstigen Nebenwirkungen bleiben aus, wenn man die Chlorierungsdauer nicht- ausdehnt, dafür aber den Druck des Chlorgases im Reaktionsgefäß steigert, wie dies oben beschrieben ist.According to the magazine "Textile Forschung" 19119, p. 32, something more coarse can be found Also break up material after the chlorine process, if one considers the duration of the action of chlorine are extended, but the extension of the chlorination time by the unfavorable side effects of the by-products resulting from exposure to chlorine very specific limits drawn. These unfavorable side effects will not occur if one does not extend the chlorination time, but the pressure of the chlorine gas in the Reaction vessel increases as described above.

Claims (1)

PATENTANSL'1LUCE1: Verfahren zur Gewinnung von Zellstoff aus gehacktem Holz mittels Chlors, dadurch gekennzeichnet, daß die Einwirkung des Chlors auf die vorher in warmer, verdünnter Natronlauge eingeweichten Hackspäne bei gewöhnlicher Temperatur und unter höherem Druck erfolgt.PATENTANSL'1LUCE1: Process for obtaining pulp from chopped Wood by means of chlorine, characterized in that the action of the chlorine on the Wood chips previously soaked in warm, diluted caustic soda for ordinary Temperature and takes place under higher pressure.
DEW54949D 1920-04-04 1920-04-04 Process for obtaining pulp from chopped wood using chlorine Expired DE446476C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEW54949D DE446476C (en) 1920-04-04 1920-04-04 Process for obtaining pulp from chopped wood using chlorine
GB1562/21A GB178196A (en) 1920-04-04 1921-01-10 Process for obtaining cellulose

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEW54949D DE446476C (en) 1920-04-04 1920-04-04 Process for obtaining pulp from chopped wood using chlorine
GB1562/21A GB178196A (en) 1920-04-04 1921-01-10 Process for obtaining cellulose

Publications (1)

Publication Number Publication Date
DE446476C true DE446476C (en) 1927-07-05

Family

ID=32963411

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW54949D Expired DE446476C (en) 1920-04-04 1920-04-04 Process for obtaining pulp from chopped wood using chlorine

Country Status (2)

Country Link
DE (1) DE446476C (en)
GB (1) GB178196A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1012814B (en) * 1953-01-08 1957-07-25 Dr Hermann F J Wenzl Process for the pre-hydrolysis of vegetable raw fiber materials such as wood, straw and the like. Like. For the purpose of obtaining pulp

Also Published As

Publication number Publication date
GB178196A (en) 1922-04-10

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