SE8404949D0 - Forfaringssett vid framstellning av pappersmassa i hogt utbyte - Google Patents

Forfaringssett vid framstellning av pappersmassa i hogt utbyte

Info

Publication number
SE8404949D0
SE8404949D0 SE8404949A SE8404949A SE8404949D0 SE 8404949 D0 SE8404949 D0 SE 8404949D0 SE 8404949 A SE8404949 A SE 8404949A SE 8404949 A SE8404949 A SE 8404949A SE 8404949 D0 SE8404949 D0 SE 8404949D0
Authority
SE
Sweden
Prior art keywords
pulp
alkali
procedures
temp
concn
Prior art date
Application number
SE8404949A
Other languages
English (en)
Other versions
SE8404949L (sv
SE454185B (sv
Inventor
H Norrstrom
R Andersson
K Idner
Original Assignee
Aga Ab
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 Aga Ab filed Critical Aga Ab
Priority to SE8404949A priority Critical patent/SE454185B/sv
Publication of SE8404949L publication Critical patent/SE8404949L/sv
Publication of SE8404949D0 publication Critical patent/SE8404949D0/sv
Publication of SE454185B publication Critical patent/SE454185B/sv

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
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents
    • 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
    • D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting compounds

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE8404949A 1984-10-03 1984-10-03 Forbehandling av lignocellulosamaterial med oxygengas vid framstellning av kemimekanisk massa SE454185B (sv)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8404949A SE454185B (sv) 1984-10-03 1984-10-03 Forbehandling av lignocellulosamaterial med oxygengas vid framstellning av kemimekanisk massa

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8404949A SE454185B (sv) 1984-10-03 1984-10-03 Forbehandling av lignocellulosamaterial med oxygengas vid framstellning av kemimekanisk massa

Publications (3)

Publication Number Publication Date
SE8404949L SE8404949L (sv) 1984-10-03
SE8404949D0 true SE8404949D0 (sv) 1984-10-03
SE454185B SE454185B (sv) 1988-04-11

Family

ID=20357226

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8404949A SE454185B (sv) 1984-10-03 1984-10-03 Forbehandling av lignocellulosamaterial med oxygengas vid framstellning av kemimekanisk massa

Country Status (1)

Country Link
SE (1) SE454185B (sv)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6752904B2 (en) 2000-02-09 2004-06-22 Akzo Nobel N.V. Process for removal of lignin from lignocellulosic material
WO2003008703A1 (en) 2001-07-19 2003-01-30 Andritz Inc. Four stage alkaline peroxide mechanical pulping
US20040200586A1 (en) 2002-07-19 2004-10-14 Martin Herkel Four stage alkaline peroxide mechanical pulping

Also Published As

Publication number Publication date
SE8404949L (sv) 1984-10-03
SE454185B (sv) 1988-04-11

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