SE501253E8 - Klorfri blekning av kemisk pappersmassa - Google Patents

Klorfri blekning av kemisk pappersmassa

Info

Publication number
SE501253E8
SE501253E8 SE9301984A SE9301984A SE501253E8 SE 501253 E8 SE501253 E8 SE 501253E8 SE 9301984 A SE9301984 A SE 9301984A SE 9301984 A SE9301984 A SE 9301984A SE 501253 E8 SE501253 E8 SE 501253E8
Authority
SE
Sweden
Prior art keywords
pulp
treating
chlorine
chemical pulp
ozone
Prior art date
Application number
SE9301984A
Other languages
English (en)
Other versions
SE9301984L (sv
SE501253C2 (sv
SE9301984D0 (sv
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20390220&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE501253(E8) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed filed Critical
Priority to SE9301984A priority Critical patent/SE501253E8/sv
Publication of SE9301984D0 publication Critical patent/SE9301984D0/sv
Priority to US08/553,324 priority patent/US6325891B1/en
Priority to AT94918626T priority patent/ATE183264T1/de
Priority to PCT/SE1994/000462 priority patent/WO1994029512A1/en
Priority to AU69862/94A priority patent/AU6986294A/en
Priority to DE69420035T priority patent/DE69420035T2/de
Priority to BR9406763A priority patent/BR9406763A/pt
Priority to EP94918626A priority patent/EP0702735B1/en
Priority to CA002163116A priority patent/CA2163116C/en
Publication of SE9301984L publication Critical patent/SE9301984L/sv
Publication of SE501253C2 publication Critical patent/SE501253C2/sv
Publication of SE501253E8 publication Critical patent/SE501253E8/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
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
    • 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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
SE9301984A 1993-06-08 1993-06-08 Klorfri blekning av kemisk pappersmassa SE501253E8 (sv)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE9301984A SE501253E8 (sv) 1993-06-08 1993-06-08 Klorfri blekning av kemisk pappersmassa
CA002163116A CA2163116C (en) 1993-06-08 1994-05-18 Method of bleaching pulp without using chlorine chemicals
EP94918626A EP0702735B1 (en) 1993-06-08 1994-05-18 Method of bleaching pulp without using chlorine chemicals
PCT/SE1994/000462 WO1994029512A1 (en) 1993-06-08 1994-05-18 Method of bleaching pulp without using chlorine chemicals
AT94918626T ATE183264T1 (de) 1993-06-08 1994-05-18 Verfahren zum bleichen von zellstoff ohne verwendung von chlor enthaltenden chemikalien
US08/553,324 US6325891B1 (en) 1993-06-08 1994-05-18 Method of bleaching pulp without using chlorine chemicals in a (QP)Z bleaching sequence
AU69862/94A AU6986294A (en) 1993-06-08 1994-05-18 Method of bleaching pulp without using chlorine chemicals
DE69420035T DE69420035T2 (de) 1993-06-08 1994-05-18 Verfahren zum bleichen von zellstoff ohne verwendung von chlor enthaltenden chemikalien
BR9406763A BR9406763A (pt) 1993-06-08 1994-05-18 Processo de tratamento de polpa de papel quimica

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9301984A SE501253E8 (sv) 1993-06-08 1993-06-08 Klorfri blekning av kemisk pappersmassa

Publications (4)

Publication Number Publication Date
SE9301984D0 SE9301984D0 (sv) 1993-06-08
SE9301984L SE9301984L (sv) 1994-12-09
SE501253C2 SE501253C2 (sv) 1994-12-19
SE501253E8 true SE501253E8 (sv) 1994-12-19

Family

ID=20390220

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9301984A SE501253E8 (sv) 1993-06-08 1993-06-08 Klorfri blekning av kemisk pappersmassa

Country Status (9)

Country Link
US (1) US6325891B1 (sv)
EP (1) EP0702735B1 (sv)
AT (1) ATE183264T1 (sv)
AU (1) AU6986294A (sv)
BR (1) BR9406763A (sv)
CA (1) CA2163116C (sv)
DE (1) DE69420035T2 (sv)
SE (1) SE501253E8 (sv)
WO (1) WO1994029512A1 (sv)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6736934B1 (en) 1995-02-17 2004-05-18 Andritz Oy Method of pretreating pulp in an acid tower prior to bleaching with peroxide
US5736004A (en) * 1995-03-03 1998-04-07 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
US5672247A (en) * 1995-03-03 1997-09-30 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
SE514947C2 (sv) * 1998-09-09 2001-05-21 Valmet Fibertech Ab Blekning av massa med ozon innefattande oxalsyratillsats
FR2910027B1 (fr) * 2006-12-13 2009-11-06 Itt Mfg Enterprises Inc Procede de blanchiment des pates papeteries chimiques par traitement final a l'ozone a haute temperature

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO144711C (no) * 1978-04-04 1981-10-21 Myrens Verksted As Fremgangsmaate til bleking av oksygendelignifiserte celluloseholdige masser med ozon
DE69004492T3 (de) * 1989-06-06 2001-11-15 Eka Nobel Ab Verfahren zum Bleichen von Lignocellulose enthaltenden Zellstoffen.
AU636173B2 (en) * 1989-10-30 1993-04-22 Lenzing Aktiengesellschaft Method for the chlorine-free bleaching of pulps
SE469842C (sv) * 1992-01-21 1996-01-15 Sunds Defibrator Ind Ab Blekning av kemisk massa med peroxid
SE469387B (sv) * 1992-05-11 1993-06-28 Kamyr Ab Saett vid blekning av massa utan anvaendning av klorkemikalier
US5401362A (en) * 1993-03-24 1995-03-28 Kamyr, Inc. Control of metals and dissolved organics in the bleach plant

Also Published As

Publication number Publication date
AU6986294A (en) 1995-01-03
SE9301984L (sv) 1994-12-09
EP0702735A1 (en) 1996-03-27
CA2163116A1 (en) 1994-12-22
SE501253C2 (sv) 1994-12-19
ATE183264T1 (de) 1999-08-15
DE69420035D1 (de) 1999-09-16
DE69420035T2 (de) 2000-03-23
WO1994029512A1 (en) 1994-12-22
SE9301984D0 (sv) 1993-06-08
BR9406763A (pt) 1996-03-05
CA2163116C (en) 2003-12-30
US6325891B1 (en) 2001-12-04
EP0702735B1 (en) 1999-08-11

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