SE9700992D0 - Method of bleaching kraft pulp - Google Patents

Method of bleaching kraft pulp

Info

Publication number
SE9700992D0
SE9700992D0 SE9700992A SE9700992A SE9700992D0 SE 9700992 D0 SE9700992 D0 SE 9700992D0 SE 9700992 A SE9700992 A SE 9700992A SE 9700992 A SE9700992 A SE 9700992A SE 9700992 D0 SE9700992 D0 SE 9700992D0
Authority
SE
Sweden
Prior art keywords
bleaching
kraft pulp
pulp
stage
oxygen
Prior art date
Application number
SE9700992A
Other languages
English (en)
Other versions
SE9700992L (sv
Inventor
Kaj Henricson
Olavi Pikka
Original Assignee
Ahlstrom Machinery Oy
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 Ahlstrom Machinery Oy filed Critical Ahlstrom Machinery Oy
Publication of SE9700992D0 publication Critical patent/SE9700992D0/sv
Publication of SE9700992L publication Critical patent/SE9700992L/sv

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
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE9700992A 1994-09-19 1997-03-18 Förfarande för blekning av kraftmassa SE9700992L (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI944348A FI944348A (sv) 1994-09-19 1994-09-19 Förfarande för blekning av kraftmassa
PCT/FI1995/000506 WO1996009434A1 (en) 1994-09-19 1995-09-18 Method of bleaching kraft pulp

Publications (2)

Publication Number Publication Date
SE9700992D0 true SE9700992D0 (sv) 1997-03-18
SE9700992L SE9700992L (sv) 1997-05-16

Family

ID=8541400

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9700992A SE9700992L (sv) 1994-09-19 1997-03-18 Förfarande för blekning av kraftmassa

Country Status (4)

Country Link
CA (1) CA2200327C (sv)
FI (1) FI944348A (sv)
SE (1) SE9700992L (sv)
WO (1) WO1996009434A1 (sv)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070012759A (ko) 1998-06-17 2007-01-26 나일 화이버 펄프 앤드 페이퍼 인코포레이티드 아룬도 도낵스 칩 및 박편
US20030029589A1 (en) * 1998-06-17 2003-02-13 Nile Fiber Pulp & Paper, Inc. Total chlorine free bleaching of Arundo donax pulp
US9512563B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Surface treated modified cellulose from chemical kraft fiber and methods of making and using same
US9511167B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Modified cellulose from chemical kraft fiber and methods of making and using the same
RU2683654C2 (ru) 2009-05-28 2019-04-01 ДжиПи СЕЛЛЬЮЛОУС ГМБХ Модифицированная целлюлоза из химического крафт-волокна и способы его изготовления и использования
US9512237B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Method for inhibiting the growth of microbes with a modified cellulose fiber
EP2714987B1 (en) 2011-05-23 2015-07-29 GP Cellulose GmbH Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same
MX366988B (es) 2012-01-12 2019-08-01 Gp Cellulose Gmbh Fibra kraft de baja viscosidad que tiene propiedades de amarillez reducida, y metodos para prepararla y usarla.
EP2839071B1 (en) 2012-04-18 2019-01-23 GP Cellulose GmbH The use of surfactant to treat pulp and improve the incorporation of kraft pulp into fiber for the production of viscose and other secondary fiber products
WO2014122533A2 (en) 2013-02-08 2014-08-14 Gp Cellulose Gmbh Softwood kraft fiber having an improved a-cellulose content and its use in the production of chemical cellulose products
RU2671653C2 (ru) 2013-03-14 2018-11-06 ДжиПи СЕЛЛЬЮЛОУС ГМБХ Способ изготовления высокофункционального маловязкого крафтволокна с использованием последовательности кислотного отбеливания и волокно, изготовленное с помощью этого процесса
JP6521873B2 (ja) 2013-03-15 2019-05-29 ゲーペー ツェルローゼ ゲーエムベーハー 増強されたカルボキシル含量を有する低粘度クラフト繊維ならびにその製造方法および使用方法
EP3541849B1 (en) 2016-11-16 2023-11-15 GP Cellulose GmbH Modified cellulose from chemical fiber and methods of making and using the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE420430B (sv) * 1978-02-17 1981-10-05 Mo Och Domsjoe Ab Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel
US4427490A (en) * 1978-04-07 1984-01-24 International Paper Company Delignification and bleaching process for lignocellulosic pulp with peroxide in the presence of metal additives
DE3428352A1 (de) * 1984-08-01 1986-02-13 Degussa Ag, 6000 Frankfurt Verfahren zur delignifizierung und bleiche von zellstoffen
FR2655668B1 (fr) * 1989-12-11 1995-06-09 Du Pin Cellulose Procede de blanchiment de pates cellulosiques chimiques.

Also Published As

Publication number Publication date
CA2200327A1 (en) 1996-03-28
FI944348A (sv) 1996-03-20
WO1996009434A1 (en) 1996-03-28
FI944348A0 (sv) 1994-09-19
SE9700992L (sv) 1997-05-16
CA2200327C (en) 2002-03-19

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Legal Events

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