SE9704273L - New process in the preparation of chemical pulp - Google Patents

New process in the preparation of chemical pulp

Info

Publication number
SE9704273L
SE9704273L SE9704273A SE9704273A SE9704273L SE 9704273 L SE9704273 L SE 9704273L SE 9704273 A SE9704273 A SE 9704273A SE 9704273 A SE9704273 A SE 9704273A SE 9704273 L SE9704273 L SE 9704273L
Authority
SE
Sweden
Prior art keywords
chemical pulp
preparation
new process
liquor
ion content
Prior art date
Application number
SE9704273A
Other languages
Swedish (sv)
Other versions
SE9704273D0 (en
Inventor
Disa Tormund
Leelo Olm
Anna Jensen
Original Assignee
Svenska Traeforskningsinst
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 Svenska Traeforskningsinst filed Critical Svenska Traeforskningsinst
Priority to SE9704273A priority Critical patent/SE9704273L/en
Publication of SE9704273D0 publication Critical patent/SE9704273D0/en
Publication of SE9704273L publication Critical patent/SE9704273L/en

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
    • 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
    • D21C3/22—Other features of pulping processes
    • D21C3/222—Use of compounds accelerating the pulping processes

Landscapes

  • Paper (AREA)

Abstract

The cooking liquor has a low initial hydroxide ion content and also contains anthraquinone. DETAILED DESCRIPTION - A method for producing chemical pulp by treating wood with a liquor under oxidising conditions, comprises the use of a liquor with an initial hydroxide ion content of 0-0.125 (less than 0.1) mole/l and treatment of the wood with anthraquinone.
SE9704273A 1997-11-21 1997-11-21 New process in the preparation of chemical pulp SE9704273L (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9704273A SE9704273L (en) 1997-11-21 1997-11-21 New process in the preparation of chemical pulp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9704273A SE9704273L (en) 1997-11-21 1997-11-21 New process in the preparation of chemical pulp

Publications (2)

Publication Number Publication Date
SE9704273D0 SE9704273D0 (en) 1997-11-21
SE9704273L true SE9704273L (en) 1999-05-22

Family

ID=20409065

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9704273A SE9704273L (en) 1997-11-21 1997-11-21 New process in the preparation of chemical pulp

Country Status (1)

Country Link
SE (1) SE9704273L (en)

Also Published As

Publication number Publication date
SE9704273D0 (en) 1997-11-21

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Legal Events

Date Code Title Description
NAV Patent application has lapsed