FI862262A0 - Foerfarande foer foerblekning av kemiska cellulosamassor. - Google Patents

Foerfarande foer foerblekning av kemiska cellulosamassor.

Info

Publication number
FI862262A0
FI862262A0 FI862262A FI862262A FI862262A0 FI 862262 A0 FI862262 A0 FI 862262A0 FI 862262 A FI862262 A FI 862262A FI 862262 A FI862262 A FI 862262A FI 862262 A0 FI862262 A0 FI 862262A0
Authority
FI
Finland
Prior art keywords
foerblekning
cellulosamassor
kemiska
foerfarande foer
foerfarande
Prior art date
Application number
FI862262A
Other languages
English (en)
Other versions
FI75196C (fi
FI75196B (fi
FI862262A (fi
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 FI862262A0 publication Critical patent/FI862262A0/fi
Priority to FI862262A priority Critical patent/FI75196C/fi
Priority to FR8707401A priority patent/FR2599398B1/fr
Priority to AT0901387A priority patent/AT395027B/de
Priority to DE19873790278 priority patent/DE3790278T1/de
Priority to PCT/FI1987/000071 priority patent/WO1987007314A1/en
Publication of FI862262A publication Critical patent/FI862262A/fi
Priority to NO880113A priority patent/NO167312C/no
Priority to SE8800152A priority patent/SE8800152D0/xx
Application granted granted Critical
Publication of FI75196B publication Critical patent/FI75196B/fi
Publication of FI75196C publication Critical patent/FI75196C/fi

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)
FI862262A 1986-05-28 1986-05-28 Foerfarande foer foerblekning av kemiska cellulosamassor. FI75196C (fi)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FI862262A FI75196C (fi) 1986-05-28 1986-05-28 Foerfarande foer foerblekning av kemiska cellulosamassor.
FR8707401A FR2599398B1 (fr) 1986-05-28 1987-05-26 Procede de preblanchiment de pates chimiques de cellulose
AT0901387A AT395027B (de) 1986-05-28 1987-05-27 Verfahren zur vorbleichung chemischer zellulosepulpen
DE19873790278 DE3790278T1 (fi) 1986-05-28 1987-05-27
PCT/FI1987/000071 WO1987007314A1 (en) 1986-05-28 1987-05-27 Procedure for prebleaching chemical cellulose pulps
NO880113A NO167312C (no) 1986-05-28 1988-01-12 Fremgangsmaate for forbleking av kjemiske cellulosemasser.
SE8800152A SE8800152D0 (sv) 1986-05-28 1988-01-19 Forfarande for forblekning av kemisk cellulosamassa

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI862262 1986-05-28
FI862262A FI75196C (fi) 1986-05-28 1986-05-28 Foerfarande foer foerblekning av kemiska cellulosamassor.

Publications (4)

Publication Number Publication Date
FI862262A0 true FI862262A0 (fi) 1986-05-28
FI862262A FI862262A (fi) 1987-11-29
FI75196B FI75196B (fi) 1988-01-29
FI75196C FI75196C (fi) 1988-05-09

Family

ID=8522706

Family Applications (1)

Application Number Title Priority Date Filing Date
FI862262A FI75196C (fi) 1986-05-28 1986-05-28 Foerfarande foer foerblekning av kemiska cellulosamassor.

Country Status (6)

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

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

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: NESTE OY