CA2404691A1 - A process for bleaching a lignocellulosic pulp - Google Patents

A process for bleaching a lignocellulosic pulp Download PDF

Info

Publication number
CA2404691A1
CA2404691A1 CA002404691A CA2404691A CA2404691A1 CA 2404691 A1 CA2404691 A1 CA 2404691A1 CA 002404691 A CA002404691 A CA 002404691A CA 2404691 A CA2404691 A CA 2404691A CA 2404691 A1 CA2404691 A1 CA 2404691A1
Authority
CA
Canada
Prior art keywords
pulp
bleaching
suspension
chlorine dioxide
carbon dioxide
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
CA002404691A
Other languages
English (en)
French (fr)
Inventor
Krister Sjoblom
Malena Rennel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AGA AB
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2404691A1 publication Critical patent/CA2404691A1/en
Abandoned legal-status Critical Current

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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • 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
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CA002404691A 2000-04-05 2001-04-04 A process for bleaching a lignocellulosic pulp Abandoned CA2404691A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20000806A FI20000806A (sv) 2000-04-05 2000-04-05 Förfarande för blekning av en lignocellulosamassa
FI20000806 2000-04-05
PCT/EP2001/004067 WO2001075221A1 (en) 2000-04-05 2001-04-04 A process for bleaching a lignocellulosic pulp

Publications (1)

Publication Number Publication Date
CA2404691A1 true CA2404691A1 (en) 2001-10-11

Family

ID=8558130

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002404691A Abandoned CA2404691A1 (en) 2000-04-05 2001-04-04 A process for bleaching a lignocellulosic pulp

Country Status (6)

Country Link
US (1) US20030155086A1 (sv)
EP (1) EP1272706A1 (sv)
AU (1) AU2001258319A1 (sv)
CA (1) CA2404691A1 (sv)
FI (1) FI20000806A (sv)
WO (1) WO2001075221A1 (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007104128A1 (en) * 2006-03-13 2007-09-20 Fp Innovations Near-neutral chlorine dioxide bleaching of pulp

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7056419B2 (en) 2002-09-30 2006-06-06 American Air Liquide, Inc. Methods for modifying electrical properties of papermaking compositions using carbon dioxide
US8920603B2 (en) * 2006-10-11 2014-12-30 Akzo Nobel N.V. Bleaching of pulp
CA2821954C (en) * 2010-12-22 2019-02-26 Akzo Nobel Chemicals International B.V. Process for improving chlorine dioxide bleaching of pulp

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB815247A (en) * 1955-07-19 1959-06-24 Columbia Cellulose Company Ltd Bleaching woob pulps
AU1175188A (en) * 1987-02-27 1988-09-01 Boc Group, Inc., The Use of gaseous carbon dioxide to adjust ph of cellulosic pulp
US5139613A (en) * 1988-01-21 1992-08-18 Canadian Liquid Air Limited Process for preparing a paper pulp using carbon dioxide as an acidifying agent for a bleached pulp
CA2069713C (en) * 1992-05-27 2003-05-13 Derek Hornsey Carbon dioxide in neutral and alkaline sizing processes
FI102911B (sv) * 1997-06-13 1999-03-15 Aga Ab Förfarande för stabilisering av pH i en massasuspension och för framst ällning av papper av den stabiliserade massan
JPH1181173A (ja) * 1997-09-01 1999-03-26 Oji Paper Co Ltd 漂白パルプの製造方法
FI991241A (sv) * 1999-06-01 2000-12-02 Aga Ab Blekning av lignin och förfarande för att tillverka papper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007104128A1 (en) * 2006-03-13 2007-09-20 Fp Innovations Near-neutral chlorine dioxide bleaching of pulp

Also Published As

Publication number Publication date
FI20000806A (sv) 2001-10-06
EP1272706A1 (en) 2003-01-08
US20030155086A1 (en) 2003-08-21
AU2001258319A1 (en) 2001-10-15
FI20000806A0 (sv) 2000-04-05
WO2001075221A1 (en) 2001-10-11

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Legal Events

Date Code Title Description
FZDE Discontinued