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BR9104774A - Metodo de deslignificacao de material fibroso celulosico triturado acidificado e aparelho para deslignificar polpa de papel - Google Patents

Metodo de deslignificacao de material fibroso celulosico triturado acidificado e aparelho para deslignificar polpa de papel

Info

Publication number
BR9104774A
BR9104774A BR919104774A BR9104774A BR9104774A BR 9104774 A BR9104774 A BR 9104774A BR 919104774 A BR919104774 A BR 919104774A BR 9104774 A BR9104774 A BR 9104774A BR 9104774 A BR9104774 A BR 9104774A
Authority
BR
Brazil
Prior art keywords
designification
acidified
fibrous material
paper pulp
cellulosic fibrous
Prior art date
Application number
BR919104774A
Other languages
English (en)
Inventor
Brian F Greenwood
Erwin D Funk
Jian Jiang
Thomas R Delcourt
Stephen J Dunn
Joseph R Phillips
Original Assignee
Kamyr 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
Application filed by Kamyr Inc filed Critical Kamyr Inc
Publication of BR9104774A publication Critical patent/BR9104774A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • B01F27/1143—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections screw-shaped, e.g. worms
    • 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)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
BR919104774A 1990-12-21 1991-11-01 Metodo de deslignificacao de material fibroso celulosico triturado acidificado e aparelho para deslignificar polpa de papel BR9104774A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62972890A 1990-12-21 1990-12-21

Publications (1)

Publication Number Publication Date
BR9104774A true BR9104774A (pt) 1992-08-18

Family

ID=24524235

Family Applications (1)

Application Number Title Priority Date Filing Date
BR919104774A BR9104774A (pt) 1990-12-21 1991-11-01 Metodo de deslignificacao de material fibroso celulosico triturado acidificado e aparelho para deslignificar polpa de papel

Country Status (8)

Country Link
EP (1) EP0492040A1 (pt)
JP (1) JPH04245990A (pt)
AU (1) AU7916491A (pt)
BR (1) BR9104774A (pt)
CA (1) CA2044898A1 (pt)
FI (1) FI915845A7 (pt)
NO (1) NO914100L (pt)
ZA (1) ZA915143B (pt)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5472572A (en) * 1990-10-26 1995-12-05 Union Camp Patent Holding, Inc. Reactor for bleaching high consistency pulp with ozone
US5520783A (en) * 1990-10-26 1996-05-28 Union Camp Patent Holding, Inc. Apparatus for bleaching high consistency pulp with ozone
CA2046717A1 (en) * 1991-02-06 1992-08-07 Beloit Technologies, Inc. Method and apparatus for treating fibrous materials with a gaseous reagent
US6126781A (en) * 1991-08-01 2000-10-03 Union Camp Patent Holding, Inc. Process for conditioning ozone gas recycle stream in ozone pulp bleaching
FI925558A7 (fi) * 1992-04-22 1993-10-23 Andritz Oy Menetelmä ja laitteisto massan valkaisemiseksi
BR9307135A (pt) * 1992-10-01 1999-07-27 Union Camp Patent Holding Processo possuindo seletividade aumentada para alvejamento de polpa lignocelulósica
WO1994015018A1 (en) * 1992-12-18 1994-07-07 Ingersoll-Rand Company Method and apparatus for regulating wood pulp bleaching
US5810973A (en) * 1993-09-21 1998-09-22 Beloit Technologies, Inc. Apparatus for producing small particles from high consistency wood pulp
BR9508224A (pt) * 1994-07-14 1997-10-28 Union Camp Patent Holding Processo tendo seletividade aumentada para alvejamento de polpa lignocelulósica alvejada
JP2896812B2 (ja) * 1994-08-11 1999-05-31 ベロイト・テクノロジーズ・インコーポレイテッド 高濃度パルプ搬送器及び搬送方法
EP0840820B1 (en) * 1995-07-26 1999-04-28 Beloit Technologies, Inc. Method and apparatus for bleaching pulp with a gaseous bleaching reagent
US5944952A (en) * 1995-07-26 1999-08-31 Beloit Technologies, Inc. Method for bleaching high consistency pulp with a gaseous bleaching reagent
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
SE514416C2 (sv) * 1999-06-10 2001-02-19 Valmet Fibertech Ab Metod och system för gastät inmatning av massa till en reaktor för ozonblekning
US6994831B1 (en) * 2002-10-23 2006-02-07 The United States Of America As Represented By The United States Department Of Energy Oxidative tritium decontamination system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI67413C (fi) * 1977-04-27 1985-03-11 Myrens Verksted As Foerfarande foer behandling av finfoerdelad fiberhaltig eller cellulosahaltig massa samt anordning foer utfoerande av foerfarandet
FR2620744A1 (fr) * 1987-09-17 1989-03-24 Degremont Procede de traitement par l'ozone de materiaux ligno-cellulosiques, notamment de pates a papier et reacteur pour la mise en oeuvre de ce procede
AT395180B (de) * 1989-08-16 1992-10-12 Andritz Ag Maschf Verfahren zur zerkleinerung von materialien und anlage zu dessen durchfuehrung

Also Published As

Publication number Publication date
ZA915143B (en) 1992-10-28
EP0492040A1 (en) 1992-07-01
CA2044898A1 (en) 1992-06-22
FI915845A7 (fi) 1992-06-22
AU7916491A (en) 1992-06-25
NO914100D0 (no) 1991-10-18
FI915845A0 (fi) 1991-12-12
NO914100L (no) 1992-06-22
JPH04245990A (ja) 1992-09-02

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