ATE82340T1 - Verfahren zur ozonbehandlung von lignocellulosematerialien, insbesondere papiermassen, und reaktor zum ausfuehren des verfahrens. - Google Patents

Verfahren zur ozonbehandlung von lignocellulosematerialien, insbesondere papiermassen, und reaktor zum ausfuehren des verfahrens.

Info

Publication number
ATE82340T1
ATE82340T1 AT88402296T AT88402296T ATE82340T1 AT E82340 T1 ATE82340 T1 AT E82340T1 AT 88402296 T AT88402296 T AT 88402296T AT 88402296 T AT88402296 T AT 88402296T AT E82340 T1 ATE82340 T1 AT E82340T1
Authority
AT
Austria
Prior art keywords
paper pulp
ozone treatment
carrier gas
reactor
carrying
Prior art date
Application number
AT88402296T
Other languages
English (en)
Inventor
Christian Coste
Pierre Jan
Original Assignee
Degremont
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 Degremont filed Critical Degremont
Application granted granted Critical
Publication of ATE82340T1 publication Critical patent/ATE82340T1/de

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Fertilizers (AREA)
AT88402296T 1987-09-17 1988-09-12 Verfahren zur ozonbehandlung von lignocellulosematerialien, insbesondere papiermassen, und reaktor zum ausfuehren des verfahrens. ATE82340T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8712890A FR2620744A1 (fr) 1987-09-17 1987-09-17 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
EP88402296A EP0308314B1 (de) 1987-09-17 1988-09-12 Verfahren zur Ozonbehandlung von Lignocellulosematerialien, insbesondere Papiermassen, und Reaktor zum Ausführen des Verfahrens

Publications (1)

Publication Number Publication Date
ATE82340T1 true ATE82340T1 (de) 1992-11-15

Family

ID=9354988

Family Applications (1)

Application Number Title Priority Date Filing Date
AT88402296T ATE82340T1 (de) 1987-09-17 1988-09-12 Verfahren zur ozonbehandlung von lignocellulosematerialien, insbesondere papiermassen, und reaktor zum ausfuehren des verfahrens.

Country Status (10)

Country Link
EP (1) EP0308314B1 (de)
JP (1) JP2731822B2 (de)
AT (1) ATE82340T1 (de)
BR (1) BR8804806A (de)
CA (1) CA1314664C (de)
DE (2) DE308314T1 (de)
ES (1) ES2035339T3 (de)
FI (1) FI93867C (de)
FR (1) FR2620744A1 (de)
NO (1) NO174781C (de)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5181989A (en) * 1990-10-26 1993-01-26 Union Camp Patent Holdings, Inc. Reactor for bleaching high consistency pulp with ozone
US5409570A (en) * 1989-02-15 1995-04-25 Union Camp Patent Holding, Inc. Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone
US5472572A (en) * 1990-10-26 1995-12-05 Union Camp Patent Holding, Inc. Reactor for bleaching high consistency pulp with ozone
US5211811A (en) * 1989-02-15 1993-05-18 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification
US5188708A (en) 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
FI89516B (fi) * 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson
AT395180B (de) * 1989-08-16 1992-10-12 Andritz Ag Maschf Verfahren zur zerkleinerung von materialien und anlage zu dessen durchfuehrung
US5164044A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5441603A (en) * 1990-05-17 1995-08-15 Union Camp Patent Holding, Inc. Method for chelation of pulp prior to ozone delignification
US5164043A (en) 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5174861A (en) * 1990-10-26 1992-12-29 Union Camp Patent Holdings, Inc. Method of 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
EP0492040A1 (de) * 1990-12-21 1992-07-01 Kamyr, Inc. Drehender Ozonreaktor für Zellstoff
EP0492039A1 (de) * 1990-12-27 1992-07-01 Kamyr, Inc. Pneumatischer Reaktor zum Ozonbleichen von Zellstoff
US5087326A (en) * 1991-02-20 1992-02-11 Union Camp Patent Holding, Inc. Rotating pulp bleaching reactor having inner and outer shells and lifting means on the interior surface of the inner shell
US5411633A (en) * 1991-04-30 1995-05-02 Kamyr, Inc. Medium consistency pulp ozone bleaching
DE69221385T2 (de) * 1991-05-24 1997-12-11 Union Camp Patent Holding, Inc., Wilmington, Del. Zweistufiger Reaktor zum Bleichen von Zellstoff und Verfahren zum Bleichen mit Ozon
FI925558A (fi) * 1992-04-22 1993-10-23 Ahlstroem Oy Foerfarande och anordning foer blekning av massa
US5387317A (en) * 1993-01-28 1995-02-07 The Mead Corporation Oxygen/ozone/peracetic aicd delignification and bleaching of cellulosic pulps
US5810973A (en) * 1993-09-21 1998-09-22 Beloit Technologies, Inc. Apparatus for producing small particles from high consistency wood pulp
US5554259A (en) 1993-10-01 1996-09-10 Union Camp Patent Holdings, Inc. Reduction of salt scale precipitation by control of process stream Ph and salt concentration
CA2197190A1 (en) * 1994-08-11 1996-02-22 Lewis D. Shackford Means for gas-sealingly conveying shredded pulp
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
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
SE514416C2 (sv) * 1999-06-10 2001-02-19 Valmet Fibertech Ab Metod och system för gastät inmatning av massa till en reaktor för ozonblekning
FR2811320B1 (fr) * 2000-07-06 2002-08-23 Adir Nouvelle forme cristalline alpha du sel de tert-butylamine du perindopril, son procede de preparation et les compositions pharmaceutiques qui la contiennent

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1591070A (en) * 1925-02-27 1926-07-06 Robert B Wolf Bleaching apparatus
US2013115A (en) * 1931-09-21 1935-09-03 Thorne Carl Busch Process and apparatus for the refining of pulp
US2466633A (en) * 1948-05-26 1949-04-05 James M Daily Method of bleaching cellulosic pulp
FR1441787A (fr) * 1965-04-30 1966-06-10 Progil Procédé de blanchiment des pâtes à papier
NO137651C (no) * 1975-10-31 1978-03-29 Myrens Verksted As Fremgangsmaate og apparat til kontinuerlig behandling av findelt fibermateriale eller celluloseholdig masse med gass uten overtrykk.
JPS5319404A (en) * 1976-04-19 1978-02-22 Toyo Pulp Co Ltd Process and apparatus for treating cellulose material
CA1090510A (en) * 1976-06-02 1980-12-02 Arthur W. Kempf Delignification and bleaching of a lignocellulosic pulp slurry with ozone
JPS5536313A (en) * 1978-08-30 1980-03-13 Hokusan Kk Production of mechanical pulp
US4363697A (en) * 1979-12-03 1982-12-14 The Black Clawson Company Method for medium consistency oxygen delignification of pulp
FR2474550A1 (fr) * 1980-01-24 1981-07-31 Scott Paper Co Procede de blanchiment de pate cellulosique
FR2609067B1 (fr) * 1986-12-31 1990-06-15 Beghin Say Sa Procede pour le traitement a l'ozone d'une pate cellulosique

Also Published As

Publication number Publication date
DE3875893T2 (de) 1993-03-18
EP0308314B1 (de) 1992-11-11
FR2620744A1 (fr) 1989-03-24
NO174781C (no) 1994-07-06
JPH0197290A (ja) 1989-04-14
EP0308314A1 (de) 1989-03-22
BR8804806A (pt) 1989-04-25
NO884128D0 (no) 1988-09-16
FI93867C (fi) 1995-06-12
CA1314664C (fr) 1993-03-23
JP2731822B2 (ja) 1998-03-25
DE308314T1 (de) 1989-10-05
FI884267A (fi) 1989-03-18
ES2035339T3 (es) 1993-04-16
NO174781B (no) 1994-03-28
DE3875893D1 (de) 1992-12-17
FI93867B (fi) 1995-02-28
NO884128L (no) 1989-03-20
FI884267A0 (fi) 1988-09-16

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee