FI921962A - Foerfarande foer blekning av cellulosahaltiga material - Google Patents

Foerfarande foer blekning av cellulosahaltiga material Download PDF

Info

Publication number
FI921962A
FI921962A FI921962A FI921962A FI921962A FI 921962 A FI921962 A FI 921962A FI 921962 A FI921962 A FI 921962A FI 921962 A FI921962 A FI 921962A FI 921962 A FI921962 A FI 921962A
Authority
FI
Finland
Prior art keywords
cellulosahaltiga
foerfarande foer
blekning
foer blekning
foerfarande
Prior art date
Application number
FI921962A
Other languages
English (en)
Other versions
FI921962A0 (fi
Inventor
Michael Sinner
Karl Schwarzl
Original Assignee
Voest Alpine Ind Anlagen
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 Voest Alpine Ind Anlagen filed Critical Voest Alpine Ind Anlagen
Publication of FI921962A0 publication Critical patent/FI921962A0/fi
Publication of FI921962A publication Critical patent/FI921962A/fi

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/10—Preparation of ozone
    • C01B13/11—Preparation of ozone by electric discharge
    • 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

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
FI921962A 1991-05-02 1992-04-30 Foerfarande foer blekning av cellulosahaltiga material FI921962A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT91891A AT395445B (de) 1991-05-02 1991-05-02 Verfahren zum bleichen von cellulosehaeltigem material

Publications (2)

Publication Number Publication Date
FI921962A0 FI921962A0 (fi) 1992-04-30
FI921962A true FI921962A (fi) 1992-11-03

Family

ID=3502826

Family Applications (1)

Application Number Title Priority Date Filing Date
FI921962A FI921962A (fi) 1991-05-02 1992-04-30 Foerfarande foer blekning av cellulosahaltiga material

Country Status (7)

Country Link
EP (1) EP0512977B1 (fi)
AT (1) AT395445B (fi)
CA (1) CA2067844A1 (fi)
DE (1) DE59207155D1 (fi)
ES (1) ES2094337T3 (fi)
FI (1) FI921962A (fi)
RU (1) RU2096547C1 (fi)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5520783A (en) * 1990-10-26 1996-05-28 Union Camp Patent Holding, Inc. Apparatus for bleaching high consistency pulp with ozone
US5403441A (en) * 1992-11-13 1995-04-04 Union Camp Patent Holding, Inc. Method for controlling an ozone bleaching process
US5364505A (en) * 1992-12-07 1994-11-15 Kamyr, Inc. Pressurized ozone pulp delignification reactor and a compressor for supplying ozone to the reactor
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
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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4140608A (en) * 1977-08-22 1979-02-20 Vaseen Vesper A Converting oxygen to ozone using a liquid dielectric containing dissolved oxygen
FI89516B (fi) * 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson
AT393701B (de) * 1989-12-22 1991-12-10 Schmidding Wilh Gmbh & Co Verfahren zum bleichen von cellulosehaeltigen materialien sowie anlage zur durchfuehrung des verfahrens
AT394707B (de) * 1990-02-14 1992-06-10 Schmidding Wilh Gmbh & Co Verfahren und vorrichtung zur herstellung von ozonhaeltigen loesungen und gasen

Also Published As

Publication number Publication date
CA2067844A1 (en) 1992-11-03
AT395445B (de) 1992-12-28
ATA91891A (de) 1992-05-15
EP0512977A1 (de) 1992-11-11
FI921962A0 (fi) 1992-04-30
EP0512977B1 (de) 1996-09-18
ES2094337T3 (es) 1997-01-16
RU2096547C1 (ru) 1997-11-20
DE59207155D1 (de) 1996-10-24

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