DE388343C - Process for the production of pulp - Google Patents

Process for the production of pulp

Info

Publication number
DE388343C
DE388343C DED42856D DED0042856D DE388343C DE 388343 C DE388343 C DE 388343C DE D42856 D DED42856 D DE D42856D DE D0042856 D DED0042856 D DE D0042856D DE 388343 C DE388343 C DE 388343C
Authority
DE
Germany
Prior art keywords
pulp
production
chlorine dioxide
wood
chlorate
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
DED42856D
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.)
ERICH SCHMIDT DR
MAX DUTTENHOFER DR
Original Assignee
ERICH SCHMIDT DR
MAX DUTTENHOFER 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 ERICH SCHMIDT DR, MAX DUTTENHOFER DR filed Critical ERICH SCHMIDT DR
Priority to DED42856D priority Critical patent/DE388343C/en
Application granted granted Critical
Publication of DE388343C publication Critical patent/DE388343C/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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites

Description

Verfahren zur Gewinnung von Zellstoff. Es ist bekannt, Zellstoff mit Chlordioxyd in Wasser oder in anderen Lösungsmitteln zu gewinnen oder zu reinigen. Der gewonnene Zellstoff ist für alle Zwecke, wo -- ein guter, reiner Zellstoff benötigt wird, vorzüglich zu gebrauchen.Process for the production of pulp. It is known to use pulp To obtain or purify chlorine dioxide in water or in other solvents. The pulp obtained is for all purposes where - a good, pure pulp is required is to use excellently.

Es hat sich nun gezeigt, daß man die Behandlung des zellstoffhaltigen Materials oder die Reinigung des Zellstoffes und die Herstellung des Chlordioxyds in einem und demselben Arbeitsgange (gegebenenfalls in ein und demselben Gefäß) vornehmen kann. Der auf diese Weise erhaltene Zellstoff hat die gleichen vorzüglichen Eigenschaften wie der. in getrenntem Arbeitsgange bzw. getrennten Gefäßen hergestellte Zellstoff.It has now been shown that the treatment of the cellulose-containing Material or the cleaning of the pulp and the production of chlorine dioxide in one and the same operation (possibly in one and the same container) can make. The pulp thus obtained has the same excellent ones Properties like that. produced in separate operations or separate vessels Cellulose.

Neben der schnelleren Arbeitsweise hat man den Vorteil, das Chlordioxyd in gasförmigem Zustande ganz zu vermeiden.In addition to the faster way of working, there is the advantage of chlorine dioxide to be avoided entirely in the gaseous state.

Bei der Gewinnung von Zellstoff aus Holz empfiehlt es sich, dem Vorgange eine Entfernung der Harzbestandteile des Holzes nach bekannten Methoden vorausgehen zu lassen.When extracting pulp from wood, it is advisable to follow the procedure the resin components of the wood are removed by known methods allow.

Beispiele: i. Gewinnung von Zellstoff aus. Holz: Zerkleinertes und entharztes Holz wird mit etwa der 5ofachen Menge einer ioprozentigen Schwefelsäure versetzt und die zur Entfernung des L ignins notwendigen Mengen Chlorat, z. B. Natriumchlorat plus Oxalsäure, in wässeriger Lösung zugesetzt. 2. Reinigung von Zellstoffen: Nach einem beliebigen Aufschlußverfahren mehr oder weniger gut aufgeschlossenem Zellstoff wird mit 5oprozentiger Schwefelsäure versetzt und ein Zusatz von Chlorat, z. B. Natriumchlorat plus Oxalsäure, in der zur Entfernung der Lignins notwendigen Menge beigefügt.Examples: i. Extraction of pulp from. Wood: Crushed and Resin-removed wood is treated with about 5 times the amount of 10% sulfuric acid added and the necessary amounts of chlorate to remove the Lignins, z. B. sodium chlorate plus oxalic acid, added in aqueous solution. 2. Purification of pulps: After any pulping process more or less well-disrupted pulp is mixed with 5% sulfuric acid and an addition of chlorate, z. B. Sodium chlorate plus oxalic acid, in the amount necessary to remove the lignins attached.

In beiden Beispielen kann man die Einwirkung der sich bildenden Chlordioxyde durch die Wahl der -Temperatur beeinflussen.In both examples you can see the effect of the chlorine dioxides that are formed influence by choosing the temperature.

Claims (2)

PATENT-ANSPRÜCI3E: i. Verfahren zur Gewinnung von Zellstoff mittels Chlordioxyd, dadurch gekennzeichnet, daß man die Gewinnung des Zellstoffes und die Entwicklung des dazu erforderlichen Chlordioxyds aus Chlorat gleichzeitig vornimmt. PATENT CLAIMS: i. Process for the production of pulp by means of Chlorine dioxide, characterized in that the production of the pulp and the Develops the chlorine dioxide required for this from chlorate at the same time. 2. Verfahren zur Reinigung von Zellstoff mittels Chlordioxyd, dadurch gekennzeichnet, daß man die Behandlung des Zellstoffes und die Entwicklung des dazu erforderlichen Chlordioxyds aus Chlorat gleichzeitig vornimmt. Verfahren zur Gewinnung von Zellstoff aus Holz gemäß dem Verfahren nach Patentanspruch i, dadurch gekennzeichnet, daß man dem Verfahren nach Patentanspruch i eine Entfernung der Harzbestandteile des Holzes nach einem bekannten Verfahren vorausgehen läßt.2. Process for the purification of cellulose by means of chlorine dioxide, characterized in that that the treatment of the pulp and the development of the necessary Simultaneously makes chlorine dioxide from chlorate. Process for the production of pulp made of wood according to the method according to claim i, characterized in that one the method according to claim i a removal of the resin components of the Wood can be preceded by a known method.
DED42856D 1922-12-12 1922-12-12 Process for the production of pulp Expired DE388343C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED42856D DE388343C (en) 1922-12-12 1922-12-12 Process for the production of pulp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED42856D DE388343C (en) 1922-12-12 1922-12-12 Process for the production of pulp

Publications (1)

Publication Number Publication Date
DE388343C true DE388343C (en) 1924-01-11

Family

ID=7047169

Family Applications (1)

Application Number Title Priority Date Filing Date
DED42856D Expired DE388343C (en) 1922-12-12 1922-12-12 Process for the production of pulp

Country Status (1)

Country Link
DE (1) DE388343C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468771A (en) * 1944-04-03 1949-05-03 Univ Minnesota Process of preparing fibers and yarns
US2799580A (en) * 1953-11-25 1957-07-16 M H Treadwell Co Inc Process for the disincrustation of fibrous vegetable materials
DE1080391B (en) * 1954-07-24 1960-04-21 Amelioration Et Le Developpmen Process for breaking up straw and bleaching wood pulp using chlorates
DE1107064B (en) * 1957-01-15 1961-05-18 Amelioration Et Le Dev Des Pro Process for obtaining paper pulp from wood

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468771A (en) * 1944-04-03 1949-05-03 Univ Minnesota Process of preparing fibers and yarns
US2799580A (en) * 1953-11-25 1957-07-16 M H Treadwell Co Inc Process for the disincrustation of fibrous vegetable materials
DE1080391B (en) * 1954-07-24 1960-04-21 Amelioration Et Le Developpmen Process for breaking up straw and bleaching wood pulp using chlorates
DE1107064B (en) * 1957-01-15 1961-05-18 Amelioration Et Le Dev Des Pro Process for obtaining paper pulp from wood

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