FI93867C - Menetelmä paperimassojen käsittelemiseksi otsonilla ja reaktori tämän menetelmän soveltamiseksi - Google Patents

Menetelmä paperimassojen käsittelemiseksi otsonilla ja reaktori tämän menetelmän soveltamiseksi Download PDF

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Publication number
FI93867C
FI93867C FI884267A FI884267A FI93867C FI 93867 C FI93867 C FI 93867C FI 884267 A FI884267 A FI 884267A FI 884267 A FI884267 A FI 884267A FI 93867 C FI93867 C FI 93867C
Authority
FI
Finland
Prior art keywords
ozone
reactor
pulp
housing
gas
Prior art date
Application number
FI884267A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI884267A (fi
FI93867B (fi
FI884267A0 (fi
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
Publication of FI884267A0 publication Critical patent/FI884267A0/fi
Publication of FI884267A publication Critical patent/FI884267A/fi
Application granted granted Critical
Publication of FI93867B publication Critical patent/FI93867B/fi
Publication of FI93867C publication Critical patent/FI93867C/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
    • D21C9/147—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)
FI884267A 1987-09-17 1988-09-16 Menetelmä paperimassojen käsittelemiseksi otsonilla ja reaktori tämän menetelmän soveltamiseksi FI93867C (fi)

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
FR8712890 1987-09-17

Publications (4)

Publication Number Publication Date
FI884267A0 FI884267A0 (fi) 1988-09-16
FI884267A FI884267A (fi) 1989-03-18
FI93867B FI93867B (fi) 1995-02-28
FI93867C true FI93867C (fi) 1995-06-12

Family

ID=9354988

Family Applications (1)

Application Number Title Priority Date Filing Date
FI884267A FI93867C (fi) 1987-09-17 1988-09-16 Menetelmä paperimassojen käsittelemiseksi otsonilla ja reaktori tämän menetelmän soveltamiseksi

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
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
ATE82340T1 (de) 1992-11-15
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
BB Publication of examined application
MM Patent lapsed

Owner name: DEGREMONT