CA2176246A1 - Procede pour le blanchiment d'une pate a papier chimique - Google Patents

Procede pour le blanchiment d'une pate a papier chimique

Info

Publication number
CA2176246A1
CA2176246A1 CA002176246A CA2176246A CA2176246A1 CA 2176246 A1 CA2176246 A1 CA 2176246A1 CA 002176246 A CA002176246 A CA 002176246A CA 2176246 A CA2176246 A CA 2176246A CA 2176246 A1 CA2176246 A1 CA 2176246A1
Authority
CA
Canada
Prior art keywords
process according
dough
sequence
paste
stage
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
CA002176246A
Other languages
English (en)
French (fr)
Inventor
Francois Desprez
Johan Devenyns
Nicholas A. Troughton
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.)
Solvay Chimie SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3887547&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2176246(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2176246A1 publication Critical patent/CA2176246A1/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
    • D21C9/163—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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
CA002176246A 1993-11-10 1994-10-28 Procede pour le blanchiment d'une pate a papier chimique Abandoned CA2176246A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BE9301251A BE1007757A3 (fr) 1993-11-10 1993-11-10 Procede pour le blanchiment d'une pate a papier chimique.
BE9301251 1993-11-10
PCT/EP1994/003590 WO1995013420A1 (fr) 1993-11-10 1994-10-28 Procede pour le blanchiment d'une pate a papier chimique

Publications (1)

Publication Number Publication Date
CA2176246A1 true CA2176246A1 (fr) 1995-05-18

Family

ID=3887547

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002176246A Abandoned CA2176246A1 (fr) 1993-11-10 1994-10-28 Procede pour le blanchiment d'une pate a papier chimique

Country Status (14)

Country Link
EP (1) EP0728238B2 (de)
JP (1) JPH10500178A (de)
AT (1) ATE175738T1 (de)
AU (1) AU7993994A (de)
BE (1) BE1007757A3 (de)
BR (1) BR9408027A (de)
CA (1) CA2176246A1 (de)
DE (1) DE69416000D1 (de)
ES (1) ES2129142T5 (de)
FI (1) FI961975A7 (de)
MA (1) MA23369A1 (de)
NO (1) NO961889D0 (de)
WO (1) WO1995013420A1 (de)
ZA (1) ZA948563B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4967451B2 (ja) 2006-05-17 2012-07-04 三菱瓦斯化学株式会社 漂白パルプの製造方法
BRPI0821031B1 (pt) 2007-12-20 2018-05-15 Mitsubishi Gas Chemical Company, Inc. Processo para produção de polpa alvejada

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69004492T3 (de) * 1989-06-06 2001-11-15 Eka Nobel Ab, Bohus Verfahren zum Bleichen von Lignocellulose enthaltenden Zellstoffen.
SE470065C (sv) * 1991-04-30 1996-01-15 Eka Nobel Ab Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning
SE468355B (sv) * 1991-04-30 1992-12-21 Eka Nobel Ab Blekning av kemisk massa genom behandling med komplexbildare och ozon
SE469842C (sv) * 1992-01-21 1996-01-15 Sunds Defibrator Ind Ab Blekning av kemisk massa med peroxid
SE9201477L (sv) * 1992-05-11 1993-06-28 Kamyr Ab Saett vid blekning av massa utan anvaendning av klorkemikalier
BE1006056A3 (fr) * 1992-07-06 1994-05-03 Solvay Interox Procede pour le blanchiment d'une pate a papier chimique.
WO1994012722A1 (en) * 1992-11-27 1994-06-09 Eka Nobel Ab Process for bleaching of lignocellulose-containing pulp
BE1007700A3 (fr) * 1993-11-04 1995-10-03 Solvay Interox Procede pour le blanchiment d'une pate a papier chimique.

Also Published As

Publication number Publication date
EP0728238B2 (de) 2004-08-11
ATE175738T1 (de) 1999-01-15
NO961889L (no) 1996-05-09
BE1007757A3 (fr) 1995-10-17
NO961889D0 (no) 1996-05-09
AU7993994A (en) 1995-05-29
FI961975L (fi) 1996-07-09
BR9408027A (pt) 1996-12-17
FI961975A0 (fi) 1996-05-09
JPH10500178A (ja) 1998-01-06
EP0728238A1 (de) 1996-08-28
WO1995013420A1 (fr) 1995-05-18
ES2129142T3 (es) 1999-06-01
ZA948563B (en) 1995-06-30
ES2129142T5 (es) 2005-04-01
FI961975A7 (fi) 1996-07-09
EP0728238B1 (de) 1999-01-13
MA23369A1 (fr) 1995-07-01
DE69416000D1 (de) 1999-02-25

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Legal Events

Date Code Title Description
FZDE Discontinued