BR9405943A - Processo para a deslignificacão de uma pasta de papel quimica - Google Patents

Processo para a deslignificacão de uma pasta de papel quimica

Info

Publication number
BR9405943A
BR9405943A BR9405943A BR9405943A BR9405943A BR 9405943 A BR9405943 A BR 9405943A BR 9405943 A BR9405943 A BR 9405943A BR 9405943 A BR9405943 A BR 9405943A BR 9405943 A BR9405943 A BR 9405943A
Authority
BR
Brazil
Prior art keywords
delignifying
chemical pulp
pulp
chemical
Prior art date
Application number
BR9405943A
Other languages
English (en)
Portuguese (pt)
Inventor
Johan Devenyns
Nicholas A Troughton
Francois Desprez
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
Application filed by Solvay Interox filed Critical Solvay Interox
Publication of BR9405943A publication Critical patent/BR9405943A/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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
BR9405943A 1993-03-02 1994-02-24 Processo para a deslignificacão de uma pasta de papel quimica BR9405943A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9300196A BE1006881A3 (fr) 1993-03-02 1993-03-02 Procede pour la delignification d'une pate a papier chimique.
PCT/EP1994/000546 WO1994020674A1 (fr) 1993-03-02 1994-02-24 Procede pour la delignification d'une pate a papier chimique

Publications (1)

Publication Number Publication Date
BR9405943A true BR9405943A (pt) 1996-02-06

Family

ID=3886877

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9405943A BR9405943A (pt) 1993-03-02 1994-02-24 Processo para a deslignificacão de uma pasta de papel quimica

Country Status (10)

Country Link
EP (1) EP0687322A1 (de)
JP (1) JPH08507332A (de)
AU (1) AU6206094A (de)
BE (1) BE1006881A3 (de)
BR (1) BR9405943A (de)
CA (1) CA2157291A1 (de)
FI (1) FI954113A (de)
NO (1) NO953440L (de)
WO (1) WO1994020674A1 (de)
ZA (1) ZA941468B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0858526A1 (de) * 1995-02-17 1998-08-19 Ahlstrom Machinery Oy Verfahren zur vorbehandlung eines für peroxidbleichung bestimmten zellstoffes
FI117392B (fi) * 1999-03-02 2006-09-29 Kemira Oyj Monivaiheinen valkaisumenetelmä kemiallisen selluloosamassan valkaisemiseksi
US6899790B2 (en) 2000-03-06 2005-05-31 Georgia-Pacific Corporation Method of providing papermaking fibers with durable curl
US6627041B2 (en) * 2000-03-06 2003-09-30 Georgia-Pacific Corporation Method of bleaching and providing papermaking fibers with durable curl
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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0364589A (ja) * 1989-07-28 1991-03-19 Mitsubishi Gas Chem Co Inc 化学パルプの漂白方法
CA2053035C (en) * 1990-10-12 1997-09-30 Repap Enterprises Inc. Chlorine-free wood pulps and process of making
SE468355B (sv) * 1991-04-30 1992-12-21 Eka Nobel Ab Blekning av kemisk massa genom behandling med komplexbildare och ozon
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.
BE1006057A3 (fr) * 1992-07-06 1994-05-03 Solvay Interox Procede pour la delignification d'une pate a papier chimique.

Also Published As

Publication number Publication date
ZA941468B (en) 1994-09-27
BE1006881A3 (fr) 1995-01-17
AU6206094A (en) 1994-09-26
NO953440L (no) 1995-11-01
CA2157291A1 (fr) 1994-09-15
NO953440D0 (no) 1995-09-01
JPH08507332A (ja) 1996-08-06
EP0687322A1 (de) 1995-12-20
WO1994020674A1 (fr) 1994-09-15
FI954113A (fi) 1995-10-04
FI954113A0 (fi) 1995-09-01

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Legal Events

Date Code Title Description
FF Decision: intention to grant
FA11 Dismissal: dismissal - article 38, par. 2 of industrial property law