FI933057A0 - CHLORFRI PROCESS FOR BLEKNING AV LIGNOCELLULOSAHALTIG PAPER PULP - Google Patents

CHLORFRI PROCESS FOR BLEKNING AV LIGNOCELLULOSAHALTIG PAPER PULP

Info

Publication number
FI933057A0
FI933057A0 FI933057A FI933057A FI933057A0 FI 933057 A0 FI933057 A0 FI 933057A0 FI 933057 A FI933057 A FI 933057A FI 933057 A FI933057 A FI 933057A FI 933057 A0 FI933057 A0 FI 933057A0
Authority
FI
Finland
Prior art keywords
lignocellulosahaltig
chlorfri
blekning
paper pulp
pulp
Prior art date
Application number
FI933057A
Other languages
Finnish (fi)
Other versions
FI933057A (en
Inventor
Omar F Ali
Bruce F Griggs
Thomas P Gandek
Michael A Pikulin
Allen Rosen
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 FI933057A0 publication Critical patent/FI933057A0/en
Publication of FI933057A publication Critical patent/FI933057A/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)
FI933057A 1991-01-03 1993-07-02 CHLORFRI PROCESS FOR BLEKNING AV LIGNOCELLULOSAHALTIG PAPER PULP FI933057A (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 (2)

Publication Number Publication Date
FI933057A0 true FI933057A0 (en) 1993-07-02
FI933057A FI933057A (en) 1993-08-13

Family

ID=24554465

Family Applications (1)

Application Number Title Priority Date Filing Date
FI933057A FI933057A (en) 1991-01-03 1993-07-02 CHLORFRI PROCESS FOR BLEKNING AV LIGNOCELLULOSAHALTIG PAPER 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
EP0211945A4 (en) * 1985-02-14 1987-07-06 Edward Francis Elton Method and apparatus for alkaline delignification of lignocellulosic fibrous materials.
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
JP2825346B2 (en) * 1990-05-17 1998-11-18 ユニオン キャンプ コーポレイション Environmentally improved bleaching method for lignocellulosic materials

Also Published As

Publication number Publication date
BR9205490A (en) 1994-04-05
WO1992012289A1 (en) 1992-07-23
CA2099881A1 (en) 1992-07-04
FI933057A (en) 1993-08-13
JP2002517173A (en) 2002-06-11
EP0565625A1 (en) 1993-10-20

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Legal Events

Date Code Title Description
FD Application lapsed