SE501325E - Förfarande för klorfri blekning av massa, varvid massan surgöres med ättiksyra vid behandlingen med komplexbildare - Google Patents

Förfarande för klorfri blekning av massa, varvid massan surgöres med ättiksyra vid behandlingen med komplexbildare

Info

Publication number
SE501325E
SE501325E SE9300277A SE9300277A SE501325E SE 501325 E SE501325 E SE 501325E SE 9300277 A SE9300277 A SE 9300277A SE 9300277 A SE9300277 A SE 9300277A SE 501325 E SE501325 E SE 501325E
Authority
SE
Sweden
Prior art keywords
pulp
acidified
chlorine
treatment
acetic acid
Prior art date
Application number
SE9300277A
Other languages
English (en)
Swedish (sv)
Other versions
SE9300277D0 (sv
SE501325C2 (sv
SE9300277L (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
Priority to SE9300277A priority Critical patent/SE501325E/xx
Publication of SE9300277D0 publication Critical patent/SE9300277D0/xx
Priority to PCT/SE1994/000054 priority patent/WO1994017239A1/en
Priority to AU59820/94A priority patent/AU675291B2/en
Priority to BR9406193A priority patent/BR9406193A/pt
Priority to EP94905899A priority patent/EP0681624A1/en
Priority to CA 2154076 priority patent/CA2154076A1/en
Priority to CN 94191058 priority patent/CN1117301A/zh
Priority to JP6516930A priority patent/JPH08505907A/ja
Publication of SE9300277L publication Critical patent/SE9300277L/
Publication of SE501325C2 publication Critical patent/SE501325C2/sv
Priority to NO952935A priority patent/NO305763B1/no
Priority to FI953589A priority patent/FI111387B/fi
Publication of SE501325E publication Critical patent/SE501325E/xx

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)
SE9300277A 1993-01-29 1993-01-29 Förfarande för klorfri blekning av massa, varvid massan surgöres med ättiksyra vid behandlingen med komplexbildare SE501325E (sv)

Priority Applications (10)

Application Number Priority Date Filing Date Title
SE9300277A SE501325E (sv) 1993-01-29 1993-01-29 Förfarande för klorfri blekning av massa, varvid massan surgöres med ättiksyra vid behandlingen med komplexbildare
JP6516930A JPH08505907A (ja) 1993-01-29 1994-01-26 酸性化剤として酢酸を用いるパルプの塩素無含有漂白方法
EP94905899A EP0681624A1 (en) 1993-01-29 1994-01-26 Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent
AU59820/94A AU675291B2 (en) 1993-01-29 1994-01-26 Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent
BR9406193A BR9406193A (pt) 1993-01-29 1994-01-26 Processo para alvejar pasta de material de fibra celulósica sem o uso de cloro
PCT/SE1994/000054 WO1994017239A1 (en) 1993-01-29 1994-01-26 Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent
CA 2154076 CA2154076A1 (en) 1993-01-29 1994-01-26 Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent
CN 94191058 CN1117301A (zh) 1993-01-29 1994-01-26 用乙酸作酸化剂的纸浆无氯漂白方法
NO952935A NO305763B1 (no) 1993-01-29 1995-07-24 FremgangsmÕte ved klorfri bleking av masse ved anvendelse av eddiksyre som surgj°rende middel
FI953589A FI111387B (fi) 1993-01-29 1995-07-27 Menetelmä massan klooritonta valkaisua varten etikkahapolla hapotusaineena

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9300277A SE501325E (sv) 1993-01-29 1993-01-29 Förfarande för klorfri blekning av massa, varvid massan surgöres med ättiksyra vid behandlingen med komplexbildare

Publications (4)

Publication Number Publication Date
SE9300277D0 SE9300277D0 (sv) 1993-01-29
SE9300277L SE9300277L (sv) 1994-07-30
SE501325C2 SE501325C2 (sv) 1995-01-16
SE501325E true SE501325E (sv) 1999-09-20

Family

ID=20388704

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9300277A SE501325E (sv) 1993-01-29 1993-01-29 Förfarande för klorfri blekning av massa, varvid massan surgöres med ättiksyra vid behandlingen med komplexbildare

Country Status (10)

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

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
EP0402335B2 (en) * 1989-06-06 2001-03-14 Eka Chemicals AB Process for bleaching lignocellulose-containing pulps
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
SE9300277D0 (sv) 1993-01-29
FI953589A0 (fi) 1995-07-27
BR9406193A (pt) 1996-01-09
FI953589A (fi) 1995-07-27
AU5982094A (en) 1994-08-15
CN1117301A (zh) 1996-02-21
NO952935D0 (no) 1995-07-24
SE501325C2 (sv) 1995-01-16
CA2154076A1 (en) 1994-08-04
AU675291B2 (en) 1997-01-30
NO305763B1 (no) 1999-07-19
JPH08505907A (ja) 1996-06-25
SE9300277L (sv) 1994-07-30
FI111387B (fi) 2003-07-15
WO1994017239A1 (en) 1994-08-04
NO952935L (no) 1995-09-13
EP0681624A1 (en) 1995-11-15

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Legal Events

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