SE8800152L - Forfarande for forblekning av kemisk cellulosamassa - Google Patents

Forfarande for forblekning av kemisk cellulosamassa

Info

Publication number
SE8800152L
SE8800152L SE8800152A SE8800152A SE8800152L SE 8800152 L SE8800152 L SE 8800152L SE 8800152 A SE8800152 A SE 8800152A SE 8800152 A SE8800152 A SE 8800152A SE 8800152 L SE8800152 L SE 8800152L
Authority
SE
Sweden
Prior art keywords
procedure
cellulose pulp
chemical
cellulosamassa
preparation
Prior art date
Application number
SE8800152A
Other languages
English (en)
Other versions
SE8800152D0 (sv
Inventor
K Ekman
R Junnila
Original Assignee
Neste Oy
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 Neste Oy filed Critical Neste Oy
Publication of SE8800152D0 publication Critical patent/SE8800152D0/sv
Publication of SE8800152L publication Critical patent/SE8800152L/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
    • 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • 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
    • D21C9/1063—Bleaching ; Apparatus therefor with compounds not otherwise provided for, e.g. activated gases

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
SE8800152A 1986-05-28 1988-01-19 Forfarande for forblekning av kemisk cellulosamassa SE8800152L (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI862262A FI75196C (sv) 1986-05-28 1986-05-28 Förfarande för förblekning av kemiska cellulosamassor.
PCT/FI1987/000071 WO1987007314A1 (en) 1986-05-28 1987-05-27 Procedure for prebleaching chemical cellulose pulps

Publications (2)

Publication Number Publication Date
SE8800152D0 SE8800152D0 (sv) 1988-01-19
SE8800152L true SE8800152L (sv) 1988-01-19

Family

ID=8522706

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8800152A SE8800152L (sv) 1986-05-28 1988-01-19 Forfarande for forblekning av kemisk cellulosamassa

Country Status (6)

Country Link
AT (1) AT395027B (sv)
DE (1) DE3790278T1 (sv)
FI (1) FI75196C (sv)
FR (1) FR2599398B1 (sv)
SE (1) SE8800152L (sv)
WO (1) WO1987007314A1 (sv)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE412235C (de) * 1924-02-27 1925-04-17 Armin Hillmer Verfahren zum Herausloesen des Lignins aus ligninhaltigen Zellulosefasern, Holz usw.mit Phenolen
US1705424A (en) * 1924-09-30 1929-03-12 Strecker Otto Carl Process for the production of cellulose by decomposition of vegetable fibers
DE2229673A1 (de) * 1972-06-19 1974-01-17 Schweers Verfahren zur herstellung von phenolzellstoff
DE3161585D1 (en) * 1980-06-20 1984-01-12 Battelle Memorial Institute A method for the delignification of wood and other ligno-cellulosic products
US4295928A (en) * 1980-08-07 1981-10-20 Nalco Chemical Company Phenolic compounds as viscosity preservatives during hypochlorite pulp bleaching

Also Published As

Publication number Publication date
DE3790278T1 (sv) 1988-06-01
FI75196C (sv) 1988-05-09
FI862262A0 (fi) 1986-05-28
ATA901387A (de) 1992-01-15
FI75196B (fi) 1988-01-29
FR2599398A1 (fr) 1987-12-04
SE8800152D0 (sv) 1988-01-19
WO1987007314A1 (en) 1987-12-03
AT395027B (de) 1992-08-25
FR2599398B1 (fr) 1989-01-13
FI862262A (fi) 1987-11-29

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Legal Events

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NAV Patent application has lapsed

Ref document number: 8800152-4

Effective date: 19920507