DE370346C - Process for the preparation of cellulose from vegetable raw materials with the help of chlorine - Google Patents

Process for the preparation of cellulose from vegetable raw materials with the help of chlorine

Info

Publication number
DE370346C
DE370346C DEK80566D DEK0080566D DE370346C DE 370346 C DE370346 C DE 370346C DE K80566 D DEK80566 D DE K80566D DE K0080566 D DEK0080566 D DE K0080566D DE 370346 C DE370346 C DE 370346C
Authority
DE
Germany
Prior art keywords
raw materials
chlorine
cellulose
help
preparation
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
DEK80566D
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.)
EMIL SIDLER DR
FR KUETTNER FA
MAX STEUDE DR
MG ERNST PROFELD
Original Assignee
EMIL SIDLER DR
FR KUETTNER FA
MAX STEUDE DR
MG ERNST PROFELD
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 EMIL SIDLER DR, FR KUETTNER FA, MAX STEUDE DR, MG ERNST PROFELD filed Critical EMIL SIDLER DR
Priority to DEK80566D priority Critical patent/DE370346C/en
Application granted granted Critical
Publication of DE370346C publication Critical patent/DE370346C/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
    • D21C3/22—Other features of pulping processes
    • D21C3/222—Use of compounds accelerating the pulping processes
    • 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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/08—Pretreatment of the finely-divided materials before digesting with oxygen-generating compounds
    • 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

  • Polysaccharides And Polysaccharide Derivatives (AREA)

Description

Verfahren zur Darstellung von Zellstoff aus pflanzlichen Rohstoffen mit Hilfe von Chlor. Die bei der Gewinnung von Zellstoff aus pflanzlichen Rohstoffen mit Hilfe von Chlor eintretende Spaltung der Pflanzenfasern in Zellulose- und \ichtzellulosestoffe beruht bekanntermaßen darauf, daß das Chlor auf das Wasser der angefeuchteten Fasern unter Bildung von naszierendem Sauerstoff einwirkt, der obige Spaltung herbeiführt, während die \ichtzellulosestoffe gleichzeitig in lösliche Ligninchloride übergeführt werden.Process for the preparation of pulp from vegetable raw materials with the help of chlorine. The production of pulp from vegetable raw materials With the help of chlorine, the plant fibers are split into cellulose and non-cellulose substances is known to be based on the fact that the chlorine on the water of the moistened fibers acts with the formation of nascent oxygen, which brings about the above cleavage, while the non-cellulose substances are simultaneously converted into soluble lignin chlorides will.

Die bei diesem Verfahren abfallende Salzsäure von etwa to Prozent ist technisch schwer verwendbar, ihre Konzentration zu kostspielig.The hydrochloric acid dropping off in this process is about to percent is technically difficult to use, its concentration too costly.

Um diese Mißstände zu beseitigen, d. h. die Chlorierungsdauer abzukürzen und eine höher konzentrierte Salzsäure zu erhalten, die bei ihrer Wiederverwendung zur Chlorierung naturgemäß ein konzentrierteres Chlorgas gibt, wird nach der Erfindung die Wirkung des naszierenden Sauerstoffes durch Einführung von aktivem Sauerstoff vor oder während der Chlorierung erhöht und die zugeführten Feuchtigkeitsmengen auf ein Mindestmaß zurückgeführt. B e i s p i e 1 i. Die Rohstoffe «-erden vor der Chlorierung mit einer 3- bis 5 prozentigen Wasserstofsuperoxvdlösung schwach durchfeuchtet und darauf mit reinem Chlorgas chloriert.In order to remedy these abuses, i. H. shorten the chlorination time and to obtain a higher concentrated hydrochloric acid that can be used again there is naturally a more concentrated chlorine gas for chlorination, according to the invention the effect of nascent oxygen through the introduction of active oxygen increased before or during the chlorination and the amount of moisture supplied reduced to a minimum. Example 1 i. The raw materials «earth before the Chlorination slightly moistened with a 3 to 5 percent hydrogen superoxide solution and then chlorinated with pure chlorine gas.

B e i s p i e 1 2. Die schwach angefeuchteten Rohstoffe werden abwechselnd oder gleichzeitig mit Ozon oder ozonisierter Luft und reinem Chlorgas behandelt.Example 1 2. The slightly moistened raw materials are alternated or treated simultaneously with ozone or ozonated air and pure chlorine gas.

Die abfallende Salzsäure ist etwa 2o- bis 22 prozenti" die Chlorierungsdauer um 2o bis 2; Prozent der sonst erforderlichen Zeit abgekürzt. Der Chlorverbrauch ist geringer. Der zuweilen auftretenden höheren Reaktionswärme (etwa 6o`) kann leicht durch Kühlung begegnet werden.The hydrochloric acid that falls is about 20 to 22 percent of the chlorination time around 2o to 2; Percent of the otherwise required time shortened. The chlorine consumption is less. The sometimes occurring higher reaction heat (about 6o`) can easily can be countered by cooling.

Claims (1)

PATEINT-A\SPRUCH: Verfahren zur Darstellung von Zellstoff aus pflanzlichen Rohstoffen mit Hilfe von Chlor; dadurch gekennzeichnet, daß man auf die Rohstoffe vor oder während der Chlorierung Wasserstoffsuperoxyd oder Ozon bzw. ozonisierte Luft einwirken läßt.PATEINT-A \ SPRUCH: Process for the preparation of cellulose from vegetable Raw materials with the help of chlorine; characterized in that one is on the raw materials before or during the chlorination hydrogen peroxide or ozone or ozonated Lets air act.
DEK80566D 1922-01-24 1922-01-24 Process for the preparation of cellulose from vegetable raw materials with the help of chlorine Expired DE370346C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK80566D DE370346C (en) 1922-01-24 1922-01-24 Process for the preparation of cellulose from vegetable raw materials with the help of chlorine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK80566D DE370346C (en) 1922-01-24 1922-01-24 Process for the preparation of cellulose from vegetable raw materials with the help of chlorine

Publications (1)

Publication Number Publication Date
DE370346C true DE370346C (en) 1923-03-02

Family

ID=7233912

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK80566D Expired DE370346C (en) 1922-01-24 1922-01-24 Process for the preparation of cellulose from vegetable raw materials with the help of chlorine

Country Status (1)

Country Link
DE (1) DE370346C (en)

Similar Documents

Publication Publication Date Title
DE2130945C3 (en) Process for removing mercury vapor from gases contaminated with it
DE370346C (en) Process for the preparation of cellulose from vegetable raw materials with the help of chlorine
DE1298875B (en) Process for bleaching cellulose in a chlorine bleach bath and with ozone
DE872491C (en) Process for the production of chlorine dioxide
DE382463C (en) Process for the production of concentrated carbohydrate solutions by digesting cellulosic material with hydrochloric acid
DE878941C (en) Process for the production of hydrazine hydrate by oxidation of urea with sodium hypochlorite
DE680393C (en) Conversion of acidic ammonium sulfite solutions to ammonium sulfate and sulfur
DE328648C (en) Process to remove the paint-destroying effect of zinc white mixed with light-sensitive painters' dyes
DE188524C (en)
AT85736B (en) Process for the saccharification of wood and other cellulose-containing substances.
DE416137C (en) Process for the decomposition of iron oxide compounds
DE1225619B (en) Process for the preparation of a salt mixture rich in potassium monopersulphate
DE937470C (en) Process for the production of chlorine dioxide
DE911421C (en) Process for the production of artificial structures from viscose
CH235757A (en) Process for the preparation of a mixture of oxides of chlorine containing chlorine dioxide.
DE863295C (en) Process for the digestion of vegetable fibers by means of acidic oxidizing agents
DE585426C (en) Manufacture of potash
DE592539C (en) Process for the preparation of cyanoformate
DE862006C (en) Process for the production of durable, oxidation-resistant mangano ascorbinate solutions
DE421829C (en) Process for working up the condensate formed during the distillation of hydrochloric acid-containing carbohydrate solutions
DE601069C (en) Process for the continuous production of acetic acid from acetaldehyde
DE561049C (en) Process for the production of ethylene glycol
DE846990C (en) Process for the production of chlorine dioxide
DE451475C (en) Process for cleaning sugar juice or raw sugar solutions by introducing chlorine
DE400255C (en) Process for the preparation of products containing chlorine from pulp waste liquors