CA2031850C - Method of bleaching pulp - Google Patents

Method of bleaching pulp

Info

Publication number
CA2031850C
CA2031850C CA002031850A CA2031850A CA2031850C CA 2031850 C CA2031850 C CA 2031850C CA 002031850 A CA002031850 A CA 002031850A CA 2031850 A CA2031850 A CA 2031850A CA 2031850 C CA2031850 C CA 2031850C
Authority
CA
Canada
Prior art keywords
ozone
recited
pulp
chlorine dioxide
bleaching
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.)
Expired - Lifetime
Application number
CA002031850A
Other languages
English (en)
French (fr)
Other versions
CA2031850A1 (en
Inventor
Charlotte Bosenius
Erik Nilsson
Petter Tibbling
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.)
Metso Fiber Karlstad AB
Original Assignee
Kamyr AB
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 Kamyr AB filed Critical Kamyr AB
Publication of CA2031850A1 publication Critical patent/CA2031850A1/en
Application granted granted Critical
Publication of CA2031850C publication Critical patent/CA2031850C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • 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
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CA002031850A 1989-12-29 1990-12-10 Method of bleaching pulp Expired - Lifetime CA2031850C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8904404A SE467261B (sv) 1989-12-29 1989-12-29 Blekning av cellulosamassa med klordioxid och ozon i ett och samma steg
SE8904404-4 1989-12-29

Publications (2)

Publication Number Publication Date
CA2031850A1 CA2031850A1 (en) 1991-06-30
CA2031850C true CA2031850C (en) 1995-11-21

Family

ID=20377905

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002031850A Expired - Lifetime CA2031850C (en) 1989-12-29 1990-12-10 Method of bleaching pulp

Country Status (9)

Country Link
JP (1) JP2934512B2 (pt)
AT (1) AT395444B (pt)
BR (1) BR9006579A (pt)
CA (1) CA2031850C (pt)
DE (1) DE4039294C2 (pt)
FI (1) FI95292C (pt)
FR (1) FR2656633B1 (pt)
NO (1) NO176060C (pt)
SE (1) SE467261B (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110656527A (zh) * 2019-09-12 2020-01-07 华南理工大学 一种臭氧和二氧化氯协同高效漂白中浓纸浆的方法及装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5322598A (en) * 1990-02-06 1994-06-21 Olin Corporation Chlorine dioxide generation using inert load of sodium perchlorate
US6174409B1 (en) 1997-09-19 2001-01-16 American Air Liquide Inc. Method to improve final bleached pulp strength properties by adjusting the CI02:03 ration within a single (D/Z) stage of the bleaching process
SE522593C2 (sv) * 1999-07-06 2004-02-24 Kvaerner Pulping Tech System och förfarande för syragasdelignifiering av massa av lignocellulosahaltigt material
GB0322598D0 (en) 2003-09-26 2003-10-29 Victrex Mfg Ltd Polymeric material
JP5987223B2 (ja) * 2012-03-06 2016-09-07 愛媛県 セルロース溶液の製造方法、セルロースの製造方法、セルロースの糖化方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1298875B (de) * 1965-01-09 1969-07-03 Gunnar Alexander Dipl Ing Verfahren zum Bleichen von Zellstoff im chlorhaltigen Bleichbad und mit Ozon
US4080249A (en) * 1976-06-02 1978-03-21 International Paper Company Delignification and bleaching of a lignocellulosic pulp slurry with ozone
US4902381A (en) * 1988-12-09 1990-02-20 Kamyr, Inc. Method of bleaching pulp with ozone-chlorine mixtures
US4959124A (en) * 1989-05-05 1990-09-25 International Paper Company Method of bleaching kraft pulp in a DZED sequence
FI89516B (fi) * 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110656527A (zh) * 2019-09-12 2020-01-07 华南理工大学 一种臭氧和二氧化氯协同高效漂白中浓纸浆的方法及装置

Also Published As

Publication number Publication date
JP2934512B2 (ja) 1999-08-16
FR2656633A1 (fr) 1991-07-05
ATA251890A (de) 1992-05-15
SE8904404D0 (sv) 1989-12-29
BR9006579A (pt) 1991-10-01
NO176060B (no) 1994-10-17
SE8904404L (sv) 1991-06-30
DE4039294C2 (de) 1993-11-11
FI95292B (fi) 1995-09-29
FI906401A0 (fi) 1990-12-27
DE4039294A1 (de) 1991-07-04
NO905598D0 (no) 1990-12-27
NO905598L (no) 1991-07-01
CA2031850A1 (en) 1991-06-30
SE467261B (sv) 1992-06-22
FI906401A (fi) 1991-06-30
FR2656633B1 (fr) 1996-06-07
AT395444B (de) 1992-12-28
JPH04263687A (ja) 1992-09-18
NO176060C (no) 1995-01-25
FI95292C (fi) 1996-01-10

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202