FI964715A - Menetelmä selluloosamassan valkaisemiseksi - Google Patents

Menetelmä selluloosamassan valkaisemiseksi Download PDF

Info

Publication number
FI964715A
FI964715A FI964715A FI964715A FI964715A FI 964715 A FI964715 A FI 964715A FI 964715 A FI964715 A FI 964715A FI 964715 A FI964715 A FI 964715A FI 964715 A FI964715 A FI 964715A
Authority
FI
Finland
Prior art keywords
cellulose pulp
bleaching cellulose
bleaching
pulp
cellulose
Prior art date
Application number
FI964715A
Other languages
English (en)
Swedish (sv)
Other versions
FI964715A0 (fi
Inventor
Agneta Fuhrmann
Original Assignee
Keskuslaboratorio
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 Keskuslaboratorio filed Critical Keskuslaboratorio
Priority to FI964715A priority Critical patent/FI964715A/fi
Publication of FI964715A0 publication Critical patent/FI964715A0/fi
Priority to AU50561/98A priority patent/AU5056198A/en
Priority to PCT/FI1997/000730 priority patent/WO1998023811A1/en
Priority to CA002270967A priority patent/CA2270967A1/en
Priority to EP97913227A priority patent/EP0946819A1/en
Publication of FI964715A publication Critical patent/FI964715A/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
    • D21C9/147—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)
FI964715A 1996-11-26 1996-11-26 Menetelmä selluloosamassan valkaisemiseksi FI964715A (fi)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FI964715A FI964715A (fi) 1996-11-26 1996-11-26 Menetelmä selluloosamassan valkaisemiseksi
AU50561/98A AU5056198A (en) 1996-11-26 1997-11-26 Bleaching of cellulosic pulp with ozone and peracid
PCT/FI1997/000730 WO1998023811A1 (en) 1996-11-26 1997-11-26 Bleaching of cellulosic pulp with ozone and peracid
CA002270967A CA2270967A1 (en) 1996-11-26 1997-11-26 Bleaching of cellulosic pulp with ozone and peracid
EP97913227A EP0946819A1 (en) 1996-11-26 1997-11-26 Bleaching of cellulosic pulp with ozone and peracid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI964715A FI964715A (fi) 1996-11-26 1996-11-26 Menetelmä selluloosamassan valkaisemiseksi

Publications (2)

Publication Number Publication Date
FI964715A0 FI964715A0 (fi) 1996-11-26
FI964715A true FI964715A (fi) 1998-05-27

Family

ID=8547143

Family Applications (1)

Application Number Title Priority Date Filing Date
FI964715A FI964715A (fi) 1996-11-26 1996-11-26 Menetelmä selluloosamassan valkaisemiseksi

Country Status (5)

Country Link
EP (1) EP0946819A1 (fi)
AU (1) AU5056198A (fi)
CA (1) CA2270967A1 (fi)
FI (1) FI964715A (fi)
WO (1) WO1998023811A1 (fi)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI112958B (fi) * 1997-12-19 2004-02-13 Kemira Oyj Menetelmä kemiallisen massan valkaisemiseksi sekä valkaisuliuoksen käyttö
CA2326311A1 (en) * 1999-11-19 2001-05-19 Praxair Technology, Inc. Method for applying activated ozone in pulp bleaching
GB2382592A (en) * 2001-11-30 2003-06-04 Sca Hygiene Prod Gmbh Use of ozone to enhance the wet strength of fibrous cellulosic material
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
RU2724362C1 (ru) * 2019-07-04 2020-06-23 Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный университет промышленных технологий и дизайна (СПбГУПТД)" Способ отбелки целлюлозы

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1004974A3 (fr) * 1991-06-06 1993-03-09 Interox Internat Sa Procede pour le blanchiment et la delignification de pates a papier chimiques et application de ce procede au blanchiment et a la delignification des pates kraft et des pates asam.
FR2692917A1 (fr) * 1992-06-30 1993-12-31 Air Liquide Procédé de blanchiment d'une pâte papetière chimique.
US5387317A (en) * 1993-01-28 1995-02-07 The Mead Corporation Oxygen/ozone/peracetic aicd delignification and bleaching of cellulosic pulps
US5411635A (en) * 1993-03-22 1995-05-02 The Research Foundation Of State University Of New York Ozone/peroxymonosulfate process for delignifying a lignocellulosic material
SE506480C2 (sv) * 1995-06-29 1997-12-22 Sca Graphic Res Ab Blekning av lignocellulosahaltigt fibermaterial med ozon och persyra i ett kombinationssteg

Also Published As

Publication number Publication date
WO1998023811A1 (en) 1998-06-04
FI964715A0 (fi) 1996-11-26
AU5056198A (en) 1998-06-22
EP0946819A1 (en) 1999-10-06
CA2270967A1 (en) 1998-06-04

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Legal Events

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MA Patent expired