NO953440L - Fremgangsmåte for delignifisering av kjemisk papirmasse - Google Patents

Fremgangsmåte for delignifisering av kjemisk papirmasse

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
English (en)
Other versions
NO953440D0 (no
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/no
Publication of NO953440L publication Critical patent/NO953440L/no

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.
NO953440A 1993-03-02 1995-09-01 Fremgangsmåte for delignifisering av kjemisk papirmasse NO953440L (no)

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 (2)

Publication Number Publication Date
NO953440D0 NO953440D0 (no) 1995-09-01
NO953440L true NO953440L (no) 1995-11-01

Family

ID=3886877

Family Applications (1)

Application Number Title Priority Date Filing Date
NO953440A NO953440L (no) 1993-03-02 1995-09-01 Fremgangsmåte for delignifisering av kjemisk papirmasse

Country Status (10)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0858526A1 (en) * 1995-02-17 1998-08-19 Ahlstrom Machinery Oy Method of pretreating pulp to be bleached with peroxide
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
BR9405943A (pt) 1996-02-06
JPH08507332A (ja) 1996-08-06
WO1994020674A1 (fr) 1994-09-15
FI954113A (fi) 1995-10-04
AU6206094A (en) 1994-09-26
ZA941468B (en) 1994-09-27
CA2157291A1 (fr) 1994-09-15
FI954113A0 (fi) 1995-09-01
NO953440D0 (no) 1995-09-01
EP0687322A1 (fr) 1995-12-20
BE1006881A3 (fr) 1995-01-17

Similar Documents

Publication Publication Date Title
CA2211223A1 (en) Method of pretreating pulp to be bleached with peroxide
NO944015L (no) Fremgangsmåte for bleking av en kjemisk papirmasse
NO953440L (no) Fremgangsmåte for delignifisering av kjemisk papirmasse
IT1249694B (it) Procedimento per la sbianca di pasta di legno senza impiego di cloro elementare. (caso 156-7131)
NO176810C (no) Fremgangsmåte ved delignifisering av lignocellulosefibre
ZA957070B (en) Pulp bleaching
SE9401628L (sv) Förfarande vid syrgasdelignifiering
FI961975A0 (fi) Menetelmän kemiallisen paperimassan valkaisemiseksi
ZA948562B (en) Process for bleaching a chemical paper pulp
SE9602455D0 (sv) Method and apparatus for treating pulp
SE0101828D0 (sv) Method and apparatus for treating pulp
SE9604511D0 (sv) Förfarande för blekning av kraftmassa