SE8302364D0 - SET FOR PREPARATION OF BLUE PAPER PAPER WITH OXYGEN - Google Patents

SET FOR PREPARATION OF BLUE PAPER PAPER WITH OXYGEN

Info

Publication number
SE8302364D0
SE8302364D0 SE8302364A SE8302364A SE8302364D0 SE 8302364 D0 SE8302364 D0 SE 8302364D0 SE 8302364 A SE8302364 A SE 8302364A SE 8302364 A SE8302364 A SE 8302364A SE 8302364 D0 SE8302364 D0 SE 8302364D0
Authority
SE
Sweden
Prior art keywords
paper
oxypulp
oxylye
oxygen
preparation
Prior art date
Application number
SE8302364A
Other languages
Swedish (sv)
Other versions
SE8302364L (en
Inventor
Nils Viktor Mannbro
Original Assignee
Nils Viktor Mannbro
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 Nils Viktor Mannbro filed Critical Nils Viktor Mannbro
Priority to SE8302364A priority Critical patent/SE8302364L/en
Publication of SE8302364D0 publication Critical patent/SE8302364D0/en
Publication of SE8302364L publication Critical patent/SE8302364L/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
    • 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
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating 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
    • 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
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

Oxypulp from the oxytower is diluted with recovered oxylye to achieve a suspension of 60kg oxypulp per m3. The oxylye residue diffuses out from the fibrous mass to the surrounding liquid during a process interuption of at least 5 mins, without liquid exchange. The suspension is stirred for 30-90 mins. Weak oxylye leaves the treated oxypulp which is then washed. The diffusion stage is operated until the level of active chlorine used in the subsequent bleaching sequence is reduced by at least 5% esp.10-30%.
SE8302364A 1983-04-27 1983-04-27 SET FOR PREPARATION OF BLUE PAPER PAPER WITH OXYGEN SE8302364L (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8302364A SE8302364L (en) 1983-04-27 1983-04-27 SET FOR PREPARATION OF BLUE PAPER PAPER WITH OXYGEN

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8302364A SE8302364L (en) 1983-04-27 1983-04-27 SET FOR PREPARATION OF BLUE PAPER PAPER WITH OXYGEN

Publications (2)

Publication Number Publication Date
SE8302364D0 true SE8302364D0 (en) 1983-04-27
SE8302364L SE8302364L (en) 1984-10-28

Family

ID=20350975

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8302364A SE8302364L (en) 1983-04-27 1983-04-27 SET FOR PREPARATION OF BLUE PAPER PAPER WITH OXYGEN

Country Status (1)

Country Link
SE (1) SE8302364L (en)

Also Published As

Publication number Publication date
SE8302364L (en) 1984-10-28

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