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FI990445A0 - Monivaiheinen valkaisumenetelmä kemiallisen selluloosamassan valkaisemiseksi - Google Patents

Monivaiheinen valkaisumenetelmä kemiallisen selluloosamassan valkaisemiseksi

Info

Publication number
FI990445A0
FI990445A0 FI990445A FI990445A FI990445A0 FI 990445 A0 FI990445 A0 FI 990445A0 FI 990445 A FI990445 A FI 990445A FI 990445 A FI990445 A FI 990445A FI 990445 A0 FI990445 A0 FI 990445A0
Authority
FI
Finland
Prior art keywords
bleaching
chemical pulp
bleaching process
bleaching chemical
step bleaching
Prior art date
Application number
FI990445A
Other languages
English (en)
Swedish (sv)
Other versions
FI117392B (fi
FI990445A (fi
Inventor
Jukka Jaekaerae
Juha Patola
Aarto Paren
Original Assignee
Kemira Chemicals 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8554015&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI990445(A0) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kemira Chemicals Oy filed Critical Kemira Chemicals Oy
Priority to FI990445A priority Critical patent/FI117392B/fi
Publication of FI990445A0 publication Critical patent/FI990445A0/fi
Priority to PCT/FI2000/000164 priority patent/WO2000052258A1/en
Priority to AU29198/00A priority patent/AU2919800A/en
Publication of FI990445A publication Critical patent/FI990445A/fi
Application granted granted Critical
Publication of FI117392B publication Critical patent/FI117392B/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
    • D21C9/16—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
    • D21C9/1057—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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI990445A 1999-03-02 1999-03-02 Monivaiheinen valkaisumenetelmä kemiallisen selluloosamassan valkaisemiseksi FI117392B (fi)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI990445A FI117392B (fi) 1999-03-02 1999-03-02 Monivaiheinen valkaisumenetelmä kemiallisen selluloosamassan valkaisemiseksi
PCT/FI2000/000164 WO2000052258A1 (en) 1999-03-02 2000-03-02 Bleaching of pulp with peracid as final bleaching agent
AU29198/00A AU2919800A (en) 1999-03-02 2000-03-02 Bleaching of pulp with peracid as final bleaching agent

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI990445 1999-03-02
FI990445A FI117392B (fi) 1999-03-02 1999-03-02 Monivaiheinen valkaisumenetelmä kemiallisen selluloosamassan valkaisemiseksi

Publications (3)

Publication Number Publication Date
FI990445A0 true FI990445A0 (fi) 1999-03-02
FI990445A FI990445A (fi) 2000-09-03
FI117392B FI117392B (fi) 2006-09-29

Family

ID=8554015

Family Applications (1)

Application Number Title Priority Date Filing Date
FI990445A FI117392B (fi) 1999-03-02 1999-03-02 Monivaiheinen valkaisumenetelmä kemiallisen selluloosamassan valkaisemiseksi

Country Status (3)

Country Link
AU (1) AU2919800A (fi)
FI (1) FI117392B (fi)
WO (1) WO2000052258A1 (fi)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI111459B (fi) 2001-04-04 2003-07-31 Kemira Chemicals Oy Menetelmä stabiilin peretikkahappotuotteen valmistamiseksi
US7914646B2 (en) 2006-07-21 2011-03-29 Nalco Company Compositions and processes for paper production
FI122829B (fi) 2010-06-02 2012-07-31 Kemira Oyj Menetelmä kelatointiaineiden seoksen valmistamiseksi
FI127996B (fi) * 2016-07-01 2019-07-15 Kemira Oyj Prosessi sellun käsittelemiseksi
WO2019048698A1 (en) * 2017-09-11 2019-03-14 Kemira Oyj PROCESS FOR TREATING PULP

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1006881A3 (fr) * 1993-03-02 1995-01-17 Solvay Interox Procede pour la delignification d'une pate a papier chimique.
US5656130A (en) * 1995-04-28 1997-08-12 Union Camp Holding, Inc. Ambient temperature pulp bleaching with peroxyacid salts
FI112958B (fi) * 1997-12-19 2004-02-13 Kemira Oyj Menetelmä kemiallisen massan valkaisemiseksi sekä valkaisuliuoksen käyttö
EP0931874A1 (en) * 1998-01-22 1999-07-28 Degussa-Hüls Aktiengesellschaft Pulp bleaching process including final stage treatment step with salt of peroxymonosulfuric acid

Also Published As

Publication number Publication date
WO2000052258A1 (en) 2000-09-08
FI117392B (fi) 2006-09-29
FI990445A (fi) 2000-09-03
AU2919800A (en) 2000-09-21

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Legal Events

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FG Patent granted

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MD Opposition filed

Opponent name: METSO FIBER KARLSTAD AB

FCK Appeal rejected

Free format text: APPLICATION REJECTED