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CA2270967A1 - Blanchiment de pate a papier cellulosique a l'aide d'ozone et de peracide - Google Patents

Blanchiment de pate a papier cellulosique a l'aide d'ozone et de peracide Download PDF

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Publication number
CA2270967A1
CA2270967A1 CA002270967A CA2270967A CA2270967A1 CA 2270967 A1 CA2270967 A1 CA 2270967A1 CA 002270967 A CA002270967 A CA 002270967A CA 2270967 A CA2270967 A CA 2270967A CA 2270967 A1 CA2270967 A1 CA 2270967A1
Authority
CA
Canada
Prior art keywords
pulp
stage
ozone
bleaching
paa
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
CA002270967A
Other languages
English (en)
Inventor
Agneta Fuhrmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KESKUSLABORATORIO - CENTRALLABORATORIUM Oy AB
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2270967A1 publication Critical patent/CA2270967A1/fr
Abandoned legal-status Critical Current

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)

Abstract

L'invention concerne un procédé de production de pâte à papier, lequel consiste à traiter cette pâte à l'aide d'ozone au cours d'au moins une étape de blanchiment. Selon l'invention, on met en contact la pâte à papier traitée à l'ozone avec un acide péroxyalcanoïque, dans des conditions acides, de façon à diminuer le caractère labile des alcalis de la pâte, puis on soumet la pâte ainsi traitée à une étape d'extraction alcaline ou de blanchiment au peroxyde. Les séquences de blanchiment sont ainsi du type Z/Paa/E ou Z/Paa/P, par exemple. La pâte à papier ainsi produite présente un indice kappa inférieur à 2, une viscosité supérieure à 600 ml/g, un indice de déchirement (T70) supérieur à 13 mN m?2¿/g ainsi qu'un indice de résistance à la traction à mâchoires jointes (T70), supérieur à 100N m/g pour une feuille mouillée.
CA002270967A 1996-11-26 1997-11-26 Blanchiment de pate a papier cellulosique a l'aide d'ozone et de peracide Abandoned CA2270967A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI964715 1996-11-26
FI964715A FI964715L (fi) 1996-11-26 1996-11-26 Menetelmä selluloosamassan valkaisemiseksi
PCT/FI1997/000730 WO1998023811A1 (fr) 1996-11-26 1997-11-26 Blanchiment de pate a papier cellulosique a l'aide d'ozone et de peracide

Publications (1)

Publication Number Publication Date
CA2270967A1 true CA2270967A1 (fr) 1998-06-04

Family

ID=8547143

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002270967A Abandoned CA2270967A1 (fr) 1996-11-26 1997-11-26 Blanchiment de pate a papier cellulosique a l'aide d'ozone et de peracide

Country Status (5)

Country Link
EP (1) EP0946819A1 (fr)
AU (1) AU5056198A (fr)
CA (1) CA2270967A1 (fr)
FI (1) FI964715L (fr)
WO (1) WO1998023811A1 (fr)

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
BR0005444A (pt) * 1999-11-19 2001-07-03 Praxair Technology Inc Processo para alvejamento de materiais lignocelulósicos
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 (en) * 2016-07-01 2019-07-15 Kemira Oyj A process for treating pulp
WO2019048698A1 (fr) * 2017-09-11 2019-03-14 Kemira Oyj Procédé de traitement de pâte
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
FI964715A7 (fi) 1998-05-27
EP0946819A1 (fr) 1999-10-06
WO1998023811A1 (fr) 1998-06-04
AU5056198A (en) 1998-06-22
FI964715L (fi) 1998-05-27
FI964715A0 (fi) 1996-11-26

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued