BR9405943A - Process for delignifying a chemical pulp - Google Patents

Process for delignifying a chemical pulp

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
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/en

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
BR9405943A 1993-03-02 1994-02-24 Process for delignifying a chemical pulp BR9405943A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9300196A BE1006881A3 (en) 1993-03-02 1993-03-02 Method for delignification of chemical pulp.
PCT/EP1994/000546 WO1994020674A1 (en) 1993-03-02 1994-02-24 Chemical paper pulp delignification method

Publications (1)

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

Family

ID=3886877

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9405943A BR9405943A (en) 1993-03-02 1994-02-24 Process for delignifying a chemical pulp

Country Status (10)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996025552A1 (en) * 1995-02-17 1996-08-22 Ahlstrom Machinery Oy Method of pretreating pulp to be bleached with peroxide
FI117392B (en) * 1999-03-02 2006-09-29 Kemira Oyj Multi-step bleaching process for bleaching chemical pulp
US6627041B2 (en) 2000-03-06 2003-09-30 Georgia-Pacific Corporation Method of bleaching and providing papermaking fibers with durable curl
US6899790B2 (en) 2000-03-06 2005-05-31 Georgia-Pacific Corporation Method of providing papermaking fibers with durable curl
JP4967451B2 (en) 2006-05-17 2012-07-04 三菱瓦斯化学株式会社 Method for producing bleached pulp
WO2009081714A1 (en) 2007-12-20 2009-07-02 Mitsubishi Gas Chemical Company, Inc. Process for production of bleached pulp

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0364589A (en) * 1989-07-28 1991-03-19 Mitsubishi Gas Chem Co Inc Bleaching of chemical pulp
CA2053035C (en) * 1990-10-12 1997-09-30 Repap Enterprises Inc. Chlorine-free wood pulps and process of making
SE468355B (en) * 1991-04-30 1992-12-21 Eka Nobel Ab CHEMISTRY OF CHEMICAL MASS THROUGH TREATMENT WITH COMPLEX PICTURES AND OZONE
BE1004974A3 (en) * 1991-06-06 1993-03-09 Interox Internat Sa Method for laundering and pasta delignification paper chemicals and application this method of laundering and the delignification of kraft pulp and pulp asam.
BE1006057A3 (en) * 1992-07-06 1994-05-03 Solvay Interox Method for delignification of chemical pulp.

Also Published As

Publication number Publication date
NO953440D0 (en) 1995-09-01
NO953440L (en) 1995-11-01
FI954113A (en) 1995-10-04
WO1994020674A1 (en) 1994-09-15
BE1006881A3 (en) 1995-01-17
CA2157291A1 (en) 1994-09-15
EP0687322A1 (en) 1995-12-20
ZA941468B (en) 1994-09-27
AU6206094A (en) 1994-09-26
FI954113A0 (en) 1995-09-01
JPH08507332A (en) 1996-08-06

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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