FI932192A0 - Foerfarande foer blekning av massa med ozon - Google Patents

Foerfarande foer blekning av massa med ozon

Info

Publication number
FI932192A0
FI932192A0 FI932192A FI932192A FI932192A0 FI 932192 A0 FI932192 A0 FI 932192A0 FI 932192 A FI932192 A FI 932192A FI 932192 A FI932192 A FI 932192A FI 932192 A0 FI932192 A0 FI 932192A0
Authority
FI
Finland
Prior art keywords
ozon
massa
med
foerfarande foer
blekning
Prior art date
Application number
FI932192A
Other languages
English (en)
Other versions
FI106639B (fi
FI932192A (fi
Inventor
Kouhei Miki
Takuya Yamamoto
Yoshiko Shishido
Mitsuhiro Mieno
Original Assignee
Sumitomo Heavy Industries
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 Sumitomo Heavy Industries filed Critical Sumitomo Heavy Industries
Publication of FI932192A0 publication Critical patent/FI932192A0/fi
Publication of FI932192A publication Critical patent/FI932192A/fi
Application granted granted Critical
Publication of FI106639B publication Critical patent/FI106639B/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)
FI932192A 1992-07-08 1993-05-14 Menetelmä massan valkaisemiseksi otsonilla FI106639B (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP18069392 1992-07-08
JP04180693A JP3121917B2 (ja) 1992-07-08 1992-07-08 オゾンによるパルプ漂白方法

Publications (3)

Publication Number Publication Date
FI932192A0 true FI932192A0 (fi) 1993-05-14
FI932192A FI932192A (fi) 1994-01-09
FI106639B FI106639B (fi) 2001-03-15

Family

ID=16087658

Family Applications (1)

Application Number Title Priority Date Filing Date
FI932192A FI106639B (fi) 1992-07-08 1993-05-14 Menetelmä massan valkaisemiseksi otsonilla

Country Status (4)

Country Link
US (1) US5368688A (fi)
JP (1) JP3121917B2 (fi)
FI (1) FI106639B (fi)
SE (1) SE510820C2 (fi)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE503644C2 (sv) * 1994-10-14 1996-07-22 Eka Chemicals Ab Sätt att bestämma halten organiskt material i effluenter från massa- och pappersbruk

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS526364A (en) * 1975-07-07 1977-01-18 Kawamura Seikan Kougiyou Kk Method of producing flexible pipe
JPS5390403A (en) * 1977-01-17 1978-08-09 Kogyo Gijutsuin Improving of oxygenn ozone bleaching of pulp
JPS5430902A (en) * 1977-06-27 1979-03-07 Seisan Kaihatsu Kagaku Kenkyus Industrial multistage pulp bleaching method
US4229252A (en) * 1979-01-11 1980-10-21 Weyerhaeuser Company Additives for ozone bleaching
JPS5643153A (en) * 1979-09-13 1981-04-21 Ricoh Co Ltd Feeding method and device for roll sheet
JPS5753916A (ja) * 1980-09-17 1982-03-31 Asahi Chem Ind Co Ltd Maikurotoransu
ES2041828T3 (es) * 1988-01-25 1993-12-01 Acetocell Gmbh & Co. Kg Procedimiento para el tratamiento de masa de celulosa conteniendo lignina, con ozono.
EP0520140A1 (en) * 1991-06-28 1992-12-30 Kamyr, Inc. Ozone-alkaline extraction bleaching without intermediate washing

Also Published As

Publication number Publication date
FI106639B (fi) 2001-03-15
SE9301720D0 (sv) 1993-05-19
SE510820C2 (sv) 1999-06-28
JPH0633389A (ja) 1994-02-08
SE9301720L (sv) 1994-01-09
JP3121917B2 (ja) 2001-01-09
FI932192A (fi) 1994-01-09
US5368688A (en) 1994-11-29

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Legal Events

Date Code Title Description
MA Patent expired