BR9205490A - Processes for the manufacture of bleached pulp having a final GE britho of at least about 75 and for the delignification and bleaching of a lignocellulosic pulp - Google Patents

Processes for the manufacture of bleached pulp having a final GE britho of at least about 75 and for the delignification and bleaching of a lignocellulosic pulp

Info

Publication number
BR9205490A
BR9205490A BR9205490A BR9205490A BR9205490A BR 9205490 A BR9205490 A BR 9205490A BR 9205490 A BR9205490 A BR 9205490A BR 9205490 A BR9205490 A BR 9205490A BR 9205490 A BR9205490 A BR 9205490A
Authority
BR
Brazil
Prior art keywords
pulp
britho
delignification
bleaching
final
Prior art date
Application number
BR9205490A
Other languages
Portuguese (pt)
Inventor
Omar F Ali
Bruce F Griggs
Thomas P Gandek
Michael A Pikulin
Rosen Allen
Stuart T Territ
Spencer W Eachus
David E White
William H Friend
Original Assignee
Union Camp Patent Holding
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 Union Camp Patent Holding filed Critical Union Camp Patent Holding
Publication of BR9205490A publication Critical patent/BR9205490A/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
    • D21C9/1057—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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
BR9205490A 1991-01-03 1992-01-02 Processes for the manufacture of bleached pulp having a final GE britho of at least about 75 and for the delignification and bleaching of a lignocellulosic pulp BR9205490A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63708191A 1991-01-03 1991-01-03
PCT/US1992/000289 WO1992012289A1 (en) 1991-01-03 1992-01-02 Chlorine-free process for bleaching lignocellulosic pulp

Publications (1)

Publication Number Publication Date
BR9205490A true BR9205490A (en) 1994-04-05

Family

ID=24554465

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9205490A BR9205490A (en) 1991-01-03 1992-01-02 Processes for the manufacture of bleached pulp having a final GE britho of at least about 75 and for the delignification and bleaching of a lignocellulosic pulp

Country Status (6)

Country Link
EP (1) EP0565625A1 (en)
JP (1) JP2002517173A (en)
BR (1) BR9205490A (en)
CA (1) CA2099881A1 (en)
FI (1) FI933057A (en)
WO (1) WO1992012289A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5472572A (en) * 1990-10-26 1995-12-05 Union Camp Patent Holding, Inc. Reactor for bleaching high consistency pulp with ozone
BE1006056A3 (en) * 1992-07-06 1994-05-03 Solvay Interox Method of laundering of chemical pulp.
SE500616C2 (en) * 1993-06-08 1994-07-25 Kvaerner Pulping Tech Bleaching of chemical pulp with peroxide at overpressure
SE501836C2 (en) * 1993-09-21 1995-05-22 Sunds Defibrator Ind Ab Bleaching of chemical pulp whereby the pulp is treated with complexing agents before and after an ozone step
JP2001200486A (en) * 1999-12-02 2001-07-27 Andritz Ahlstrom Inc Method for treating slurry of finely ground cellulose fiber material
US7001484B2 (en) 2000-05-04 2006-02-21 University Of New Brunswick Peroxide bleaching of wood pulp using stabilizers and sodium hydrosulfide reducing agent
US20070131364A1 (en) * 2005-12-14 2007-06-14 University Of Maine Process for treating a cellulose-lignin pulp
JP5471050B2 (en) * 2009-06-09 2014-04-16 三菱瓦斯化学株式会社 TCF bleaching method
SE538752C2 (en) * 2014-11-21 2016-11-08 Innventia Ab Process for the production of a treated pulp, treated pulp, and textile fibres produced from the treated pulp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62501921A (en) * 1985-02-14 1987-07-30 エルトン，エドワ−ド　フランシス Alkaline delignification method and apparatus for lignocellulose fibrous material
DE4004364A1 (en) * 1990-02-13 1991-08-14 Sueddeutsche Kalkstickstoff Bleaching and delignifying pre-balanced cellulose - in two stages with peroxide activated with cyanamide or cyanamide salt, avoiding agents contg. chlorine
BR9007533A (en) * 1990-05-17 1992-04-28 Union Camp Corp PROCESS FOR THE MANUFACTURE OF TARGETED PULP AND TO DESIGNIFY AND TARGET A LIGNOSCELULOSIC MATERIAL

Also Published As

Publication number Publication date
FI933057A0 (en) 1993-07-02
EP0565625A1 (en) 1993-10-20
FI933057A (en) 1993-08-13
CA2099881A1 (en) 1992-07-04
JP2002517173A (en) 2002-06-11
WO1992012289A1 (en) 1992-07-23

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Legal Events

Date Code Title Description
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FA8 Dismissal: dismissal - article 36, par. 1 of industrial property law