BR9408027A - Processo para o branqueamento de uma pasta de papel quimica - Google Patents

Processo para o branqueamento de uma pasta de papel quimica

Info

Publication number
BR9408027A
BR9408027A BR9408027A BR9408027A BR9408027A BR 9408027 A BR9408027 A BR 9408027A BR 9408027 A BR9408027 A BR 9408027A BR 9408027 A BR9408027 A BR 9408027A BR 9408027 A BR9408027 A BR 9408027A
Authority
BR
Brazil
Prior art keywords
bleaching
chemical pulp
pulp
decontamination
involving
Prior art date
Application number
BR9408027A
Other languages
English (en)
Portuguese (pt)
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=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR9408027(A) "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
Publication of BR9408027A publication Critical patent/BR9408027A/pt

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)
BR9408027A 1993-11-10 1994-10-28 Processo para o branqueamento de uma pasta de papel quimica BR9408027A (pt)

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
BR9408027A true BR9408027A (pt) 1996-12-17

Family

ID=3887547

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9408027A BR9408027A (pt) 1993-11-10 1994-10-28 Processo para o branqueamento de uma pasta de papel quimica

Country Status (14)

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

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
US8900408B2 (en) 2007-12-20 2014-12-02 Mitsubishi Gas Chemical Company, Inc. Process for production of bleached pulp

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0402335B2 (en) * 1989-06-06 2001-03-14 Eka Chemicals AB Process for bleaching lignocellulose-containing pulps
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
MA23369A1 (fr) 1995-07-01
EP0728238B2 (fr) 2004-08-11
ES2129142T3 (es) 1999-06-01
WO1995013420A1 (fr) 1995-05-18
FI961975A0 (fi) 1996-05-09
BE1007757A3 (fr) 1995-10-17
ES2129142T5 (es) 2005-04-01
NO961889L (no) 1996-05-09
AU7993994A (en) 1995-05-29
NO961889D0 (no) 1996-05-09
JPH10500178A (ja) 1998-01-06
ATE175738T1 (de) 1999-01-15
DE69416000D1 (de) 1999-02-25
FI961975A (fi) 1996-07-09
ZA948563B (en) 1995-06-30
EP0728238A1 (fr) 1996-08-28
EP0728238B1 (fr) 1999-01-13
CA2176246A1 (fr) 1995-05-18

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Legal Events

Date Code Title Description
EG Technical examination (opinion): publication of technical examination (opinion)