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ATE175738T1 - Verfahren zum bleichen von zellstoff - Google Patents

Verfahren zum bleichen von zellstoff

Info

Publication number
ATE175738T1
ATE175738T1 AT94931025T AT94931025T ATE175738T1 AT E175738 T1 ATE175738 T1 AT E175738T1 AT 94931025 T AT94931025 T AT 94931025T AT 94931025 T AT94931025 T AT 94931025T AT E175738 T1 ATE175738 T1 AT E175738T1
Authority
AT
Austria
Prior art keywords
pulp
bleaching pulp
decontamination
involving
subjected
Prior art date
Application number
AT94931025T
Other languages
German (de)
English (en)
Inventor
Francois Desprez
Johan Devenyns
Nicholas A Troughton
Original Assignee
Solvay Interox
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=ATE175738(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Solvay Interox filed Critical Solvay Interox
Application granted granted Critical
Publication of ATE175738T1 publication Critical patent/ATE175738T1/de

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)
AT94931025T 1993-11-10 1994-10-28 Verfahren zum bleichen von zellstoff ATE175738T1 (de)

Applications Claiming Priority (1)

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.

Publications (1)

Publication Number Publication Date
ATE175738T1 true ATE175738T1 (de) 1999-01-15

Family

ID=3887547

Family Applications (1)

Application Number Title Priority Date Filing Date
AT94931025T ATE175738T1 (de) 1993-11-10 1994-10-28 Verfahren zum bleichen von zellstoff

Country Status (14)

Country Link
EP (1) EP0728238B2 (fr)
JP (1) JPH10500178A (fr)
AT (1) ATE175738T1 (fr)
AU (1) AU7993994A (fr)
BE (1) BE1007757A3 (fr)
BR (1) BR9408027A (fr)
CA (1) CA2176246A1 (fr)
DE (1) DE69416000D1 (fr)
ES (1) ES2129142T5 (fr)
FI (1) FI961975A (fr)
MA (1) MA23369A1 (fr)
NO (1) NO961889D0 (fr)
WO (1) WO1995013420A1 (fr)
ZA (1) ZA948563B (fr)

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
CN101903591A (zh) 2007-12-20 2010-12-01 三菱瓦斯化学株式会社 漂白纸浆的制造方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK0402335T4 (da) * 1989-06-06 2001-06-25 Eka Chemicals Ab Fremgangsmåde til blegning af lignocelluloseholdigpulp
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 1996-01-15 Eka Nobel Ab Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning
SE469842C (sv) * 1992-01-21 1996-01-15 Sunds Defibrator Ind Ab Blekning av kemisk massa med peroxid
SE469387B (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.
ES2091121T3 (es) * 1992-11-27 1996-10-16 Eka Chemicals Ab Procedimiento para blanquear pasta que contiene lignocelulosa.
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
JPH10500178A (ja) 1998-01-06
FI961975A0 (fi) 1996-05-09
FI961975A (fi) 1996-07-09
EP0728238A1 (fr) 1996-08-28
EP0728238B2 (fr) 2004-08-11
MA23369A1 (fr) 1995-07-01
DE69416000D1 (de) 1999-02-25
ES2129142T3 (es) 1999-06-01
AU7993994A (en) 1995-05-29
NO961889L (no) 1996-05-09
ZA948563B (en) 1995-06-30
EP0728238B1 (fr) 1999-01-13
WO1995013420A1 (fr) 1995-05-18
BR9408027A (pt) 1996-12-17
NO961889D0 (no) 1996-05-09
BE1007757A3 (fr) 1995-10-17
ES2129142T5 (es) 2005-04-01
CA2176246A1 (fr) 1995-05-18

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties