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BR9006579A - Processo de branqueamento de polpa de material de fibra celulosica - Google Patents

Processo de branqueamento de polpa de material de fibra celulosica

Info

Publication number
BR9006579A
BR9006579A BR909006579A BR9006579A BR9006579A BR 9006579 A BR9006579 A BR 9006579A BR 909006579 A BR909006579 A BR 909006579A BR 9006579 A BR9006579 A BR 9006579A BR 9006579 A BR9006579 A BR 9006579A
Authority
BR
Brazil
Prior art keywords
cellulosic material
bleaching process
pulp bleaching
fiber cellulosic
fiber
Prior art date
Application number
BR909006579A
Other languages
English (en)
Inventor
Charlotte Bosenius
Erik Nilsson
Petter Tibbling
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 BR9006579A publication Critical patent/BR9006579A/pt

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)
BR909006579A 1989-12-29 1990-12-26 Processo de branqueamento de polpa de material de fibra celulosica BR9006579A (pt)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
BR9006579A true BR9006579A (pt) 1991-10-01

Family

ID=20377905

Family Applications (1)

Application Number Title Priority Date Filing Date
BR909006579A BR9006579A (pt) 1989-12-29 1990-12-26 Processo de branqueamento de polpa de material de fibra celulosica

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)

Families Citing this family (6)

* 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
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

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

Also Published As

Publication number Publication date
DE4039294C2 (de) 1993-11-11
NO905598D0 (no) 1990-12-27
FI906401A0 (fi) 1990-12-27
FI95292B (fi) 1995-09-29
JP2934512B2 (ja) 1999-08-16
CA2031850C (en) 1995-11-21
NO176060C (no) 1995-01-25
CA2031850A1 (en) 1991-06-30
AT395444B (de) 1992-12-28
NO905598L (no) 1991-07-01
SE467261B (sv) 1992-06-22
DE4039294A1 (de) 1991-07-04
SE8904404L (sv) 1991-06-30
ATA251890A (de) 1992-05-15
JPH04263687A (ja) 1992-09-18
NO176060B (no) 1994-10-17
FR2656633A1 (fr) 1991-07-05
FI95292C (fi) 1996-01-10
FR2656633B1 (fr) 1996-06-07
SE8904404D0 (sv) 1989-12-29
FI906401L (fi) 1991-06-30

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Legal Events

Date Code Title Description
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B25F Entry of change of name and/or headquarter and transfer of application, patent and certif. of addition of invention: change of name on requirement

Owner name: KAMYR AKTIEBOLAG (SE)

Free format text: A FIM DE ATENDER A ALTERACAO DE NOME REQUERIDA ATRAVES DA PETICAO NO 020070110411/RJ DE 09/08/2007, RECOLHA OS VALORES REFERENTES AS OUTRAS DUAS ALTERACOES DE NOME.

B25D Requested change of name of applicant approved

Owner name: KVAERNER PULPING TECHNOLOGIES AKTIEBOLAG (SE)

Free format text: ALTERADO DE: KAMYR AKTIEBOLAG

B25D Requested change of name of applicant approved

Owner name: KVAERNER PULPING AKTIEBOLAG (SE)

Free format text: ALTERADO DE: KVAERNER PULPING TECHNOLOGIES AKTIEBOLAG

B25D Requested change of name of applicant approved

Owner name: METSO FIBER KARLSTAD AB (SE)

Free format text: ALTERADO DE: KVAERNER PULPING AKTIEBOLAG

B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 26/12/2010