SE516969C2 - Klordioxidblekning i två steg med återföring av filtrat - Google Patents

Klordioxidblekning i två steg med återföring av filtrat

Info

Publication number
SE516969C2
SE516969C2 SE0002930A SE0002930A SE516969C2 SE 516969 C2 SE516969 C2 SE 516969C2 SE 0002930 A SE0002930 A SE 0002930A SE 0002930 A SE0002930 A SE 0002930A SE 516969 C2 SE516969 C2 SE 516969C2
Authority
SE
Sweden
Prior art keywords
pulp
chlorine dioxide
bleaching
filtrate
concentration
Prior art date
Application number
SE0002930A
Other languages
English (en)
Swedish (sv)
Other versions
SE0002930D0 (sv
SE0002930L (sv
Inventor
Lars-Aake Lindstroem
Solveig Norden
Gunnar Carre
Original Assignee
Metso Paper Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20280715&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE516969(C2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Metso Paper Inc filed Critical Metso Paper Inc
Priority to SE0002930A priority Critical patent/SE516969C2/sv
Publication of SE0002930D0 publication Critical patent/SE0002930D0/xx
Priority to PCT/SE2001/001752 priority patent/WO2002014600A1/en
Priority to DE60136079T priority patent/DE60136079D1/de
Priority to EP01961500A priority patent/EP1311722B1/de
Priority to CA002417338A priority patent/CA2417338C/en
Priority to AT01961500T priority patent/ATE410542T1/de
Priority to AU2001282761A priority patent/AU2001282761A1/en
Priority to JP2002519719A priority patent/JP2004506818A/ja
Priority to US10/344,425 priority patent/US7182835B2/en
Publication of SE0002930L publication Critical patent/SE0002930L/
Publication of SE516969C2 publication Critical patent/SE516969C2/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
    • D21C9/12—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)
  • Detergent Compositions (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
SE0002930A 2000-08-14 2000-08-14 Klordioxidblekning i två steg med återföring av filtrat SE516969C2 (sv)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE0002930A SE516969C2 (sv) 2000-08-14 2000-08-14 Klordioxidblekning i två steg med återföring av filtrat
US10/344,425 US7182835B2 (en) 2000-08-14 2001-08-14 Two-stage chlorine bleaching process with filtrate recirculation
JP2002519719A JP2004506818A (ja) 2000-08-14 2001-08-14 濾液の再循環を伴う２段階塩素漂白方法
EP01961500A EP1311722B1 (de) 2000-08-14 2001-08-14 Zweistufiges chlorbleichverfahren mit filtratrückführung
DE60136079T DE60136079D1 (de) 2000-08-14 2001-08-14 Zweistufiges chlorbleichverfahren mit filtratrückführung
PCT/SE2001/001752 WO2002014600A1 (en) 2000-08-14 2001-08-14 Two-stage chlorine bleaching process with filtrate recirculation
CA002417338A CA2417338C (en) 2000-08-14 2001-08-14 Two-stage chlorine bleaching process with filtrate recirculation
AT01961500T ATE410542T1 (de) 2000-08-14 2001-08-14 Zweistufiges chlorbleichverfahren mit filtratrückführung
AU2001282761A AU2001282761A1 (en) 2000-08-14 2001-08-14 Two-stage chlorine bleaching process with filtrate recirculation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0002930A SE516969C2 (sv) 2000-08-14 2000-08-14 Klordioxidblekning i två steg med återföring av filtrat

Publications (3)

Publication Number Publication Date
SE0002930D0 SE0002930D0 (sv) 2000-08-14
SE0002930L SE0002930L (sv) 2002-02-15
SE516969C2 true SE516969C2 (sv) 2002-03-26

Family

ID=20280715

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0002930A SE516969C2 (sv) 2000-08-14 2000-08-14 Klordioxidblekning i två steg med återföring av filtrat

Country Status (9)

Country Link
US (1) US7182835B2 (de)
EP (1) EP1311722B1 (de)
JP (1) JP2004506818A (de)
AT (1) ATE410542T1 (de)
AU (1) AU2001282761A1 (de)
CA (1) CA2417338C (de)
DE (1) DE60136079D1 (de)
SE (1) SE516969C2 (de)
WO (1) WO2002014600A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE516969C2 (sv) * 2000-08-14 2002-03-26 Metso Paper Inc Klordioxidblekning i två steg med återföring av filtrat
DE102006057861A1 (de) * 2006-12-08 2008-06-12 Voith Patent Gmbh Verfahren zur Behandlung von beim Eindicken von Papierfasersuspension anfallendem Filtrat
FI122241B (fi) * 2007-06-15 2011-10-31 Andritz Oy Menetelmä massan pesun yhteydessä sellutehtaalla
SE532370C2 (sv) * 2008-02-28 2009-12-29 Metso Paper Inc Metod för blekning av en massa
CA2793941C (en) 2010-03-23 2015-08-18 International Paper Company Improved bctmp filtrate recycling system and method

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632469A (en) * 1969-06-05 1972-01-04 Ethyl Corp Process for the manufacture of dissolving grade pulp
SE390178B (sv) * 1974-09-04 1976-12-06 Sunds Ab Sett vid blekning av lignocellulosahaltigt material med en kombination av gasfasklorering och ett system for fortrengningsblekning innehallande klordioxid
ZA761255B (en) * 1975-03-11 1977-03-30 Erco Envirotech Ltd Bleachplant operation
US4104114A (en) * 1977-05-05 1978-08-01 Erco Envirotech Ltd. Bleach plant operation
NZ235983A (en) * 1989-11-08 1993-01-27 Novo Nordisk As Process for hydrolysis of resins in lignocellulosic pulp using enzymes simultaneously with peroxy bleaching; ctmp fluff-pulp and absorbent articles produced therefrom
US5118389A (en) * 1990-07-06 1992-06-02 Ici Canada Inc. Two-stage peroxide bleaching process using different amounts of peroxide on different portions of mechanical pulp
US5853535A (en) * 1991-01-28 1998-12-29 Champion International Corporation Process for manufacturing bleached pulp including recycling
DE19614587A1 (de) * 1996-04-13 1997-10-16 Jaschinski Thomas Dipl Holzw Verfahren und Bleichlösung zum Bleichen von cellulosischen Faserstoffen
US6569284B1 (en) * 1996-09-24 2003-05-27 International Paper Company Elemental-chlorine-free bleaching process having an initial Eo or Eop stage
US6315863B1 (en) * 1998-06-18 2001-11-13 Weyerhaeuser Company Chlorine dioxide pulp bleaching process having reduced barium scaling by recycling post-chlorination waste filtrate
SE516969C2 (sv) * 2000-08-14 2002-03-26 Metso Paper Inc Klordioxidblekning i två steg med återföring av filtrat
SE0300276L (sv) * 2003-01-31 2003-12-09 Kvaerner Pulping Tech Förfarande för blekning av cellulosamassa samt bleklinje härför

Also Published As

Publication number Publication date
DE60136079D1 (de) 2008-11-20
EP1311722B1 (de) 2008-10-08
SE0002930D0 (sv) 2000-08-14
AU2001282761A1 (en) 2002-02-25
CA2417338C (en) 2009-12-15
WO2002014600A1 (en) 2002-02-21
CA2417338A1 (en) 2002-02-21
ATE410542T1 (de) 2008-10-15
US7182835B2 (en) 2007-02-27
EP1311722A1 (de) 2003-05-21
US20030178163A1 (en) 2003-09-25
SE0002930L (sv) 2002-02-15
JP2004506818A (ja) 2004-03-04

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Legal Events

Date Code Title Description
NUG Patent has lapsed