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FI953000A0 - Menetelmä ja laite puumassan valkaisun säätelemiseksi - Google Patents

Menetelmä ja laite puumassan valkaisun säätelemiseksi

Info

Publication number
FI953000A0
FI953000A0 FI953000A FI953000A FI953000A0 FI 953000 A0 FI953000 A0 FI 953000A0 FI 953000 A FI953000 A FI 953000A FI 953000 A FI953000 A FI 953000A FI 953000 A0 FI953000 A0 FI 953000A0
Authority
FI
Finland
Prior art keywords
wood pulp
controlling wood
pulp leaching
leaching
controlling
Prior art date
Application number
FI953000A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI953000A (fi
Inventor
Oscar Luthi
Original Assignee
Ingersoll Rand 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 Ingersoll Rand Co filed Critical Ingersoll Rand Co
Publication of FI953000A publication Critical patent/FI953000A/fi
Publication of FI953000A0 publication Critical patent/FI953000A0/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
    • D21C9/1026—Other features in bleaching processes
    • 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
    • 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)
FI953000A 1992-12-18 1995-06-16 Menetelmä ja laite puumassan valkaisun säätelemiseksi FI953000A0 (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US99318692A 1992-12-18 1992-12-18
PCT/US1993/012135 WO1994015018A1 (fr) 1992-12-18 1993-12-13 Procede et appareil de regulation du blanchiment de pate de bois

Publications (2)

Publication Number Publication Date
FI953000A FI953000A (fi) 1995-06-16
FI953000A0 true FI953000A0 (fi) 1995-06-16

Family

ID=25539200

Family Applications (1)

Application Number Title Priority Date Filing Date
FI953000A FI953000A0 (fi) 1992-12-18 1995-06-16 Menetelmä ja laite puumassan valkaisun säätelemiseksi

Country Status (4)

Country Link
EP (1) EP0674731A4 (fr)
CA (1) CA2151813A1 (fr)
FI (1) FI953000A0 (fr)
WO (1) WO1994015018A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5810973A (en) * 1993-09-21 1998-09-22 Beloit Technologies, Inc. Apparatus for producing small particles from high consistency wood pulp
US5736004A (en) * 1995-03-03 1998-04-07 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
US5672247A (en) * 1995-03-03 1997-09-30 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
US5944952A (en) * 1995-07-26 1999-08-31 Beloit Technologies, Inc. Method for bleaching high consistency pulp with a gaseous bleaching reagent
EP0840820B1 (fr) * 1995-07-26 1999-04-28 Beloit Technologies, Inc. Procede et equipement de blanchiment de pate a papier au moyen d'un reactif de blanchiment gazeux
US6077396A (en) * 1997-05-16 2000-06-20 Lariviere; Christopher J. Apparatus for fluffing and contacting high consistancy wood pulp with a gaseous bleaching reagent

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964962A (en) * 1974-02-25 1976-06-22 Ingersoll-Rand Company Gaseous reaction apparatus and processes including a peripheral gas receiving chamber and a gas recirculation conduit
US4581104A (en) * 1983-08-11 1986-04-08 Ingersoll-Rand Company Method of reducing the lignin in wood pulp with oxygen gas recirculation
US5188708A (en) * 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
AT395180B (de) * 1989-08-16 1992-10-12 Andritz Ag Maschf Verfahren zur zerkleinerung von materialien und anlage zu dessen durchfuehrung
US5174861A (en) * 1990-10-26 1992-12-29 Union Camp Patent Holdings, Inc. Method of bleaching high consistency pulp with ozone
EP0492040A1 (fr) * 1990-12-21 1992-07-01 Kamyr, Inc. Réacteur rotatif à ozone pour pâte à papier

Also Published As

Publication number Publication date
CA2151813A1 (fr) 1994-07-07
WO1994015018A1 (fr) 1994-07-07
FI953000A (fi) 1995-06-16
EP0674731A1 (fr) 1995-10-04
EP0674731A4 (fr) 1997-06-18

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Legal Events

Date Code Title Description
GB Transfer or assigment of application

Owner name: BELOIT TECHNOLOGIES, INC.