FI953589A - Förfarande för klorfri blekning av massa med ättiksyra som syramedel - Google Patents

Förfarande för klorfri blekning av massa med ättiksyra som syramedel Download PDF

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Publication number
FI953589A
FI953589A FI953589A FI953589A FI953589A FI 953589 A FI953589 A FI 953589A FI 953589 A FI953589 A FI 953589A FI 953589 A FI953589 A FI 953589A FI 953589 A FI953589 A FI 953589A
Authority
FI
Finland
Prior art keywords
pulp
chlorine
acetic acid
acidifying agent
free bleaching
Prior art date
Application number
FI953589A
Other languages
English (en)
Finnish (fi)
Other versions
FI111387B (sv
FI953589A0 (sv
Inventor
Erik Nilsson
Petter Tibbling
Original Assignee
Kvaerner Pulping Tech
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 Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech
Publication of FI953589A0 publication Critical patent/FI953589A0/sv
Publication of FI953589A publication Critical patent/FI953589A/sv
Application granted granted Critical
Publication of FI111387B publication Critical patent/FI111387B/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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
    • 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI953589A 1993-01-29 1995-07-27 Förfarande för klorfri blekning av massa med ättiksyra som surgörningsmedel FI111387B (sv)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE9300277 1993-01-29
SE9300277A SE501325E (sv) 1993-01-29 1993-01-29 Förfarande för klorfri blekning av massa, varvid massan surgöres med ättiksyra vid behandlingen med komplexbildare
SE9400054 1994-01-12
PCT/SE1994/000054 WO1994017239A1 (en) 1993-01-29 1994-01-26 Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent

Publications (3)

Publication Number Publication Date
FI953589A0 FI953589A0 (sv) 1995-07-27
FI953589A true FI953589A (sv) 1995-07-27
FI111387B FI111387B (sv) 2003-07-15

Family

ID=20388704

Family Applications (1)

Application Number Title Priority Date Filing Date
FI953589A FI111387B (sv) 1993-01-29 1995-07-27 Förfarande för klorfri blekning av massa med ättiksyra som surgörningsmedel

Country Status (10)

Country Link
EP (1) EP0681624A1 (sv)
JP (1) JPH08505907A (sv)
CN (1) CN1117301A (sv)
AU (1) AU675291B2 (sv)
BR (1) BR9406193A (sv)
CA (1) CA2154076A1 (sv)
FI (1) FI111387B (sv)
NO (1) NO305763B1 (sv)
SE (1) SE501325E (sv)
WO (1) WO1994017239A1 (sv)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1050642C (zh) * 1996-06-25 2000-03-22 华南理工大学 高浓纸浆过氧化氢漂白方法
CN103726382B (zh) * 2013-12-31 2016-08-17 安徽泾县千年古宣宣纸有限公司 一种纯草型宣纸及其无氯漂白生产工艺
EP3882380B1 (en) * 2020-03-16 2022-04-27 Re:NewCell AB One stage method for acid metal removal and bleach

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2219505C3 (de) * 1972-04-21 1974-10-17 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Chlorfreie Mehrstufenbleiche von Zellstoff
DE2841013C2 (de) * 1978-09-21 1984-06-07 Degussa Ag, 6000 Frankfurt Verfahren zur Vollbleiche von Zellstoff
DE402335T1 (de) * 1989-06-06 1992-04-09 Eka Nobel Ab, Surte Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
SE468355B (sv) * 1991-04-30 1992-12-21 Eka Nobel Ab Blekning av kemisk massa genom behandling med komplexbildare och ozon

Also Published As

Publication number Publication date
CN1117301A (zh) 1996-02-21
CA2154076A1 (en) 1994-08-04
WO1994017239A1 (en) 1994-08-04
SE501325E (sv) 1999-09-20
FI111387B (sv) 2003-07-15
NO952935L (no) 1995-09-13
JPH08505907A (ja) 1996-06-25
SE501325C2 (sv) 1995-01-16
SE9300277D0 (sv) 1993-01-29
FI953589A0 (sv) 1995-07-27
NO952935D0 (no) 1995-07-24
AU675291B2 (en) 1997-01-30
BR9406193A (pt) 1996-01-09
NO305763B1 (no) 1999-07-19
AU5982094A (en) 1994-08-15
EP0681624A1 (en) 1995-11-15
SE9300277L (sv) 1994-07-30

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