NO953440L - Procedure for Delignification of Chemical Pulp - Google Patents

Procedure for Delignification of Chemical Pulp

Info

Publication number
NO953440L
NO953440L NO953440A NO953440A NO953440L NO 953440 L NO953440 L NO 953440L NO 953440 A NO953440 A NO 953440A NO 953440 A NO953440 A NO 953440A NO 953440 L NO953440 L NO 953440L
Authority
NO
Norway
Prior art keywords
chemical pulp
delignification
procedure
pulp
delignifying
Prior art date
Application number
NO953440A
Other languages
Norwegian (no)
Other versions
NO953440D0 (en
Inventor
Johan Devenyns
Nicholas A Troughton
Francois Desprez
Original Assignee
Solvay Interox Sa
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 Sa filed Critical Solvay Interox Sa
Publication of NO953440D0 publication Critical patent/NO953440D0/en
Publication of NO953440L publication Critical patent/NO953440L/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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

Fremgangsmåte for delignifisering av en kjemisk papirmasse ved hjelp av en sekvens av behandlingstrinn hvor det ikke anvendes klorholdige reaktanter, omfattende, i denne rekkefølge, et trinn for behandling med oksygen, et trinn for fjerning av metall- ionene fra massen, et trinn med alkalisk hydrogenperoksyd og et trinn med en peroksy- syre.A process for delignifying a chemical pulp by a sequence of treatment steps using no chlorine-containing reactants, including, in this order, a step for treating oxygen, a step for removing the metal ions from the pulp, a step of alkaline hydrogen peroxide. and a step with a peroxyacid.

NO953440A 1993-03-02 1995-09-01 Procedure for Delignification of Chemical Pulp NO953440L (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 (2)

Publication Number Publication Date
NO953440D0 NO953440D0 (en) 1995-09-01
NO953440L true NO953440L (en) 1995-11-01

Family

ID=3886877

Family Applications (1)

Application Number Title Priority Date Filing Date
NO953440A NO953440L (en) 1993-03-02 1995-09-01 Procedure for Delignification of 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
US6736934B1 (en) * 1995-02-17 2004-05-18 Andritz Oy Method of pretreating pulp in an acid tower prior to bleaching with peroxide
FI117392B (en) * 1999-03-02 2006-09-29 Kemira Oyj Multi-step bleaching process for bleaching chemical pulp
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 (en) 2006-05-17 2012-07-04 三菱瓦斯化学株式会社 Method for producing bleached pulp
CA2709526C (en) 2007-12-20 2016-02-02 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
FI954113A (en) 1995-10-04
FI954113A0 (en) 1995-09-01
WO1994020674A1 (en) 1994-09-15
EP0687322A1 (en) 1995-12-20
ZA941468B (en) 1994-09-27
BE1006881A3 (en) 1995-01-17
AU6206094A (en) 1994-09-26
CA2157291A1 (en) 1994-09-15
JPH08507332A (en) 1996-08-06
BR9405943A (en) 1996-02-06
NO953440D0 (en) 1995-09-01

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