FI934446L - Foerfarande foer reducering av maengden av faergade aemnen i blekavlut genom att anvaenda dzd-blekserie - Google Patents

Foerfarande foer reducering av maengden av faergade aemnen i blekavlut genom att anvaenda dzd-blekserie Download PDF

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Publication number
FI934446L
FI934446L FI934446A FI934446A FI934446L FI 934446 L FI934446 L FI 934446L FI 934446 A FI934446 A FI 934446A FI 934446 A FI934446 A FI 934446A FI 934446 L FI934446 L FI 934446L
Authority
FI
Finland
Prior art keywords
maengden
faergade
blekserie
blekavlut
aemnen
Prior art date
Application number
FI934446A
Other languages
English (en)
Finnish (fi)
Other versions
FI934446A7 (fi
FI934446A0 (fi
Inventor
Shyam S Bhattacharjee
Jean J Renard
Original Assignee
Int Paper Co
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 Int Paper Co filed Critical Int Paper Co
Publication of FI934446A0 publication Critical patent/FI934446A0/fi
Publication of FI934446A7 publication Critical patent/FI934446A7/fi
Publication of FI934446L publication Critical patent/FI934446L/fi

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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI934446A 1991-04-08 1992-03-26 Foerfarande foer reducering av maengden av faergade aemnen i blekavlut genom att anvaenda dzd-blekserie FI934446L (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US68272891A 1991-04-08 1991-04-08
PCT/US1992/002533 WO1992017639A1 (fr) 1991-04-08 1992-03-26 Procede de reduction de matiere coloree d'un effluent de blanchiment en utilisant une sequence de blanchiment dzd

Publications (3)

Publication Number Publication Date
FI934446A0 FI934446A0 (fi) 1993-10-08
FI934446A7 FI934446A7 (fi) 1993-10-29
FI934446L true FI934446L (fi) 1993-10-29

Family

ID=24740890

Family Applications (1)

Application Number Title Priority Date Filing Date
FI934446A FI934446L (fi) 1991-04-08 1992-03-26 Foerfarande foer reducering av maengden av faergade aemnen i blekavlut genom att anvaenda dzd-blekserie

Country Status (7)

Country Link
US (1) US6042690A (fr)
EP (1) EP0579744A4 (fr)
JP (1) JPH06506271A (fr)
BR (1) BR9205875A (fr)
CA (1) CA2107883A1 (fr)
FI (1) FI934446L (fr)
WO (1) WO1992017639A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994010377A1 (fr) * 1992-10-23 1994-05-11 Macmillan Bloedel Limited Blanchiment a l'ozone ameliore
SE9401771D0 (sv) * 1994-05-24 1994-05-24 Hans Olof Samuelson Process for removal of metal compounds in lignocellulosic pulp
CA2186176C (fr) * 1995-09-28 2002-11-26 Derek Hornsey Methode de blanchiment a l'ozone de la pate cellulosique de faible consistance, et appareil connexe
FR2743094B1 (fr) * 1995-12-27 1998-02-13 Centre Tech Ind Papier Procede de blanchiment des pates a papier chimiques
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
WO2000008251A1 (fr) * 1998-07-31 2000-02-17 Asia Pulp & Paper Co. Ltd. Procede perfectionne de blanchiment de pate a papier
WO2007108760A1 (fr) * 2006-03-20 2007-09-27 Metso Paper, Inc. Blanchiment final de a pâte de cellulose à l'ozone
WO2021201830A1 (fr) * 2020-03-30 2021-10-07 Common Grounds Lab Inc. Compositions imprimées tridimensionnelles utilisant des substrats organiques tels que du café, des coques de pistache et des coques de noix de coco, avec des liants à base de bactéries, revêtements pour compositions imprimées tridimensionnelles, et procédés associés

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080249A (en) * 1976-06-02 1978-03-21 International Paper Company Delignification and bleaching of a lignocellulosic pulp slurry with ozone
US4080239A (en) * 1977-05-05 1978-03-21 Interface Mechanisms, Inc. Automated label applicator
US4216054A (en) * 1977-09-26 1980-08-05 Weyerhaeuser Company Low-consistency ozone delignification
US4372812A (en) * 1978-04-07 1983-02-08 International Paper Company Chlorine free process for bleaching lignocellulosic pulp
US4259149A (en) * 1978-05-03 1981-03-31 Hooker Chemicals & Plastics Corp. Method of reducing waste stream pollutants by the control and separation of waste contaminants from a multi-stage cellulosic bleaching sequence
US4959124A (en) * 1989-05-05 1990-09-25 International Paper Company Method of bleaching kraft pulp in a DZED sequence

Also Published As

Publication number Publication date
JPH06506271A (ja) 1994-07-14
CA2107883A1 (fr) 1992-10-09
WO1992017639A1 (fr) 1992-10-15
FI934446A7 (fi) 1993-10-29
US6042690A (en) 2000-03-28
FI934446A0 (fi) 1993-10-08
EP0579744A1 (fr) 1994-01-26
EP0579744A4 (en) 1995-11-15
BR9205875A (pt) 1994-08-02

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