DE69416000D1 - Verfahren zum bleichen von zellstoff - Google Patents

Verfahren zum bleichen von zellstoff

Info

Publication number
DE69416000D1
DE69416000D1 DE69416000T DE69416000T DE69416000D1 DE 69416000 D1 DE69416000 D1 DE 69416000D1 DE 69416000 T DE69416000 T DE 69416000T DE 69416000 T DE69416000 T DE 69416000T DE 69416000 D1 DE69416000 D1 DE 69416000D1
Authority
DE
Germany
Prior art keywords
pulp
bleaching pulp
decontamination
involving
subjected
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.)
Expired - Lifetime
Application number
DE69416000T
Other languages
English (en)
Inventor
Francois Desprez
Johan Devenyns
Nicholas 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
Solvay Interox SA
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=DE69416000(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Solvay Interox SA filed Critical Solvay Interox SA
Application granted granted Critical
Publication of DE69416000D1 publication Critical patent/DE69416000D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
DE69416000T 1993-11-10 1994-10-28 Verfahren zum bleichen von zellstoff Expired - Lifetime DE69416000D1 (de)

Applications Claiming Priority (2)

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.
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
DE69416000D1 true DE69416000D1 (de) 1999-02-25

Family

ID=3887547

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69416000T Expired - Lifetime DE69416000D1 (de) 1993-11-10 1994-10-28 Verfahren zum bleichen von zellstoff

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) FI961975A (de)
MA (1) MA23369A1 (de)
NO (1) NO961889L (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
DE402335T1 (de) * 1989-06-06 1992-04-09 Eka Nobel Ab, Surte, Se Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
SE468355B (sv) * 1991-04-30 1992-12-21 Eka Nobel Ab Blekning av kemisk massa genom behandling med komplexbildare och ozon
SE470065C (sv) * 1991-04-30 1995-10-12 Eka Nobel Ab Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning
SE469842C (sv) * 1992-01-21 1995-09-22 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.
DE69304342T3 (de) * 1992-11-27 2004-07-01 Eka Chemicals Ab Verfahren zum bleichen von lignocellulose-enthaltendem zellstoff
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
EP0728238A1 (de) 1996-08-28
BR9408027A (pt) 1996-12-17
ES2129142T3 (es) 1999-06-01
EP0728238B2 (de) 2004-08-11
CA2176246A1 (fr) 1995-05-18
EP0728238B1 (de) 1999-01-13
ZA948563B (en) 1995-06-30
FI961975A (fi) 1996-07-09
ES2129142T5 (es) 2005-04-01
AU7993994A (en) 1995-05-29
WO1995013420A1 (fr) 1995-05-18
NO961889D0 (no) 1996-05-09
BE1007757A3 (fr) 1995-10-17
NO961889L (no) 1996-05-09
JPH10500178A (ja) 1998-01-06
ATE175738T1 (de) 1999-01-15
MA23369A1 (fr) 1995-07-01
FI961975A0 (fi) 1996-05-09

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Legal Events

Date Code Title Description
8332 No legal effect for de