SE9303066D0 - Blekning av kemisk massa - Google Patents

Blekning av kemisk massa

Info

Publication number
SE9303066D0
SE9303066D0 SE9303066A SE9303066A SE9303066D0 SE 9303066 D0 SE9303066 D0 SE 9303066D0 SE 9303066 A SE9303066 A SE 9303066A SE 9303066 A SE9303066 A SE 9303066A SE 9303066 D0 SE9303066 D0 SE 9303066D0
Authority
SE
Sweden
Prior art keywords
bleaching
pulp
treated
chemical pulp
ozone
Prior art date
Application number
SE9303066A
Other languages
English (en)
Other versions
SE501836C2 (sv
SE9303066L (sv
Original Assignee
Sunds Defibrator Ind Ab
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 Sunds Defibrator Ind Ab filed Critical Sunds Defibrator Ind Ab
Priority to SE9303066A priority Critical patent/SE501836C2/sv
Publication of SE9303066D0 publication Critical patent/SE9303066D0/sv
Priority to AU77923/94A priority patent/AU7792394A/en
Priority to BR9407555A priority patent/BR9407555A/pt
Priority to JP7509711A priority patent/JPH09503028A/ja
Priority to CA002168445A priority patent/CA2168445A1/en
Priority to PCT/SE1994/000758 priority patent/WO1995008666A1/en
Priority to EP94928521A priority patent/EP0720675A1/en
Publication of SE9303066L publication Critical patent/SE9303066L/sv
Publication of SE501836C2 publication Critical patent/SE501836C2/sv
Priority to FI961279A priority patent/FI961279A/sv
Priority to NO961139A priority patent/NO961139L/no

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
    • D21C9/1026—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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • 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)
SE9303066A 1993-09-21 1993-09-21 Blekning av kemisk massa varvid massan behandlas med komplexbildare före och efter ett ozonsteg SE501836C2 (sv)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE9303066A SE501836C2 (sv) 1993-09-21 1993-09-21 Blekning av kemisk massa varvid massan behandlas med komplexbildare före och efter ett ozonsteg
EP94928521A EP0720675A1 (en) 1993-09-21 1994-08-22 Chlorine-free bleaching of chemical pulp involving a two stage treatment with chelating agent
CA002168445A CA2168445A1 (en) 1993-09-21 1994-08-22 Chlorine-free bleaching of chemical pulp involving a two stage treatment with chelating agent
BR9407555A BR9407555A (pt) 1993-09-21 1994-08-22 Processo para o branqueamento de material de fibra contendo lignocelulose na forma de pasta quimica sem que se utilize agentes de branqueamento clóricos
JP7509711A JPH09503028A (ja) 1993-09-21 1994-08-22 キレート化剤で２段階処理することを含む化学パルプの無塩素漂白
AU77923/94A AU7792394A (en) 1993-09-21 1994-08-22 Chlorine-free bleaching of chemical pulp involving a two stage treatment with chelating agent
PCT/SE1994/000758 WO1995008666A1 (en) 1993-09-21 1994-08-22 Chlorine-free bleaching of chemical pulp involving a two stage treatment with chelating agent
FI961279A FI961279A (sv) 1993-09-21 1996-03-20 Klorfri blekning av kemisk massa omfattande en tvåstegsbehandling med kelatiseringsmedel
NO961139A NO961139L (no) 1993-09-21 1996-03-20 Klorfri bleking av kjemisk masse ved totrinnsbleking med chelatdanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9303066A SE501836C2 (sv) 1993-09-21 1993-09-21 Blekning av kemisk massa varvid massan behandlas med komplexbildare före och efter ett ozonsteg

Publications (3)

Publication Number Publication Date
SE9303066D0 true SE9303066D0 (sv) 1993-09-21
SE9303066L SE9303066L (sv) 1995-03-22
SE501836C2 SE501836C2 (sv) 1995-05-22

Family

ID=20391160

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9303066A SE501836C2 (sv) 1993-09-21 1993-09-21 Blekning av kemisk massa varvid massan behandlas med komplexbildare före och efter ett ozonsteg

Country Status (9)

Country Link
EP (1) EP0720675A1 (sv)
JP (1) JPH09503028A (sv)
AU (1) AU7792394A (sv)
BR (1) BR9407555A (sv)
CA (1) CA2168445A1 (sv)
FI (1) FI961279A (sv)
NO (1) NO961139L (sv)
SE (1) SE501836C2 (sv)
WO (1) WO1995008666A1 (sv)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE504803C2 (sv) * 1995-08-24 1997-04-28 Sunds Defibrator Ind Ab Behandling av massa med komplexbildare i minst två blandningssteg utan mellanliggande tvätt
SE508239C2 (sv) * 1997-01-03 1998-09-21 Sunds Defibrator Ind Ab Behandling av massa med komplexbildare i minst ett blandningssteg, utan användning av blektorn
CN102587186B (zh) * 2012-03-20 2015-03-11 昆明理工大学 一种大龙竹化学浆的漂白方法
RU2634586C1 (ru) * 2016-08-01 2017-10-31 федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский национальный исследовательский политехнический университет" Способ отбелки лиственной сульфатной целлюлозы

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002517173A (ja) * 1991-01-03 2002-06-11 ユニオン キャンプ パテント ホウルディング インコーポレイテッド 塩素を使用しないリグノセルロースパルプの漂白法
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
FI961279A0 (sv) 1996-03-20
NO961139D0 (no) 1996-03-20
FI961279A (sv) 1996-03-20
WO1995008666A1 (en) 1995-03-30
EP0720675A1 (en) 1996-07-10
NO961139L (no) 1996-03-20
AU7792394A (en) 1995-04-10
JPH09503028A (ja) 1997-03-25
SE501836C2 (sv) 1995-05-22
SE9303066L (sv) 1995-03-22
CA2168445A1 (en) 1995-03-30
BR9407555A (pt) 1996-12-31

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