ATA901387A - METHOD FOR PRE-BLEACHING CHEMICAL CELLULOSE PULPS - Google Patents

METHOD FOR PRE-BLEACHING CHEMICAL CELLULOSE PULPS

Info

Publication number
ATA901387A
ATA901387A AT0901387A AT901387A ATA901387A AT A901387 A ATA901387 A AT A901387A AT 0901387 A AT0901387 A AT 0901387A AT 901387 A AT901387 A AT 901387A AT A901387 A ATA901387 A AT A901387A
Authority
AT
Austria
Prior art keywords
bleaching chemical
chemical cellulose
cellulose pulps
pulps
bleaching
Prior art date
Application number
AT0901387A
Other languages
German (de)
Other versions
AT395027B (en
Inventor
Kurt Ekman
Raimo 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 ATA901387A publication Critical patent/ATA901387A/en
Application granted granted Critical
Publication of AT395027B publication Critical patent/AT395027B/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
    • D21C9/10—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)
AT0901387A 1986-05-28 1987-05-27 METHOD FOR PRE-BLEACHING CHEMICAL CELLULOSE PULPS AT395027B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI862262A FI75196C (en) 1986-05-28 1986-05-28 Process for bleaching chemical cellulose pulp.

Publications (2)

Publication Number Publication Date
ATA901387A true ATA901387A (en) 1992-01-15
AT395027B AT395027B (en) 1992-08-25

Family

ID=8522706

Family Applications (1)

Application Number Title Priority Date Filing Date
AT0901387A AT395027B (en) 1986-05-28 1987-05-27 METHOD FOR PRE-BLEACHING CHEMICAL CELLULOSE PULPS

Country Status (6)

Country Link
AT (1) AT395027B (en)
DE (1) DE3790278T1 (en)
FI (1) FI75196C (en)
FR (1) FR2599398B1 (en)
SE (1) SE8800152D0 (en)
WO (1) WO1987007314A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE412235C (en) * 1924-02-27 1925-04-17 Armin Hillmer Process for extracting lignin from lignin-containing cellulose fibers, wood, etc. with phenols
US1705424A (en) * 1924-09-30 1929-03-12 Strecker Otto Carl Process for the production of cellulose by decomposition of vegetable fibers
DE2229673A1 (en) * 1972-06-19 1974-01-17 Schweers Cellulose prodn from ligno deriv - using phenols from pyrolysis of phenol-lignins and acid catalyst
EP0043342B1 (en) * 1980-06-20 1983-12-07 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
SE8800152L (en) 1988-01-19
FI862262A0 (en) 1986-05-28
DE3790278T1 (en) 1988-06-01
SE8800152D0 (en) 1988-01-19
FR2599398A1 (en) 1987-12-04
FI75196C (en) 1988-05-09
WO1987007314A1 (en) 1987-12-03
FR2599398B1 (en) 1989-01-13
AT395027B (en) 1992-08-25
FI75196B (en) 1988-01-29
FI862262A (en) 1987-11-29

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee