SE7807120L - Forfarande for blekning av kemisk massa i flera steg - Google Patents

Forfarande for blekning av kemisk massa i flera steg

Info

Publication number
SE7807120L
SE7807120L SE7807120A SE7807120A SE7807120L SE 7807120 L SE7807120 L SE 7807120L SE 7807120 A SE7807120 A SE 7807120A SE 7807120 A SE7807120 A SE 7807120A SE 7807120 L SE7807120 L SE 7807120L
Authority
SE
Sweden
Prior art keywords
procedure
several steps
bleaching chemical
chemical mass
mass
Prior art date
Application number
SE7807120A
Other languages
English (en)
Other versions
SE440372B (sv
Inventor
R Kimura
F Omori
K Nomura
Y Yoneda
Original Assignee
Japan Pulp & Paper Res 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 Japan Pulp & Paper Res Inc filed Critical Japan Pulp & Paper Res Inc
Publication of SE7807120L publication Critical patent/SE7807120L/sv
Publication of SE440372B publication Critical patent/SE440372B/sv

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)
SE7807120A 1977-06-27 1978-06-21 Forfarande for blekning av kemisk massa med ozon SE440372B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7668977A JPS5430902A (en) 1977-06-27 1977-06-27 Industrial multistage pulp bleaching method

Publications (2)

Publication Number Publication Date
SE7807120L true SE7807120L (sv) 1978-12-28
SE440372B SE440372B (sv) 1985-07-29

Family

ID=13612417

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7807120A SE440372B (sv) 1977-06-27 1978-06-21 Forfarande for blekning av kemisk massa med ozon

Country Status (4)

Country Link
JP (1) JPS5430902A (sv)
CA (1) CA1103409A (sv)
FI (1) FI70610C (sv)
SE (1) SE440372B (sv)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5188708A (en) * 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
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
US5181989A (en) * 1990-10-26 1993-01-26 Union Camp Patent Holdings, Inc. Reactor for bleaching high consistency pulp with ozone
US5472572A (en) * 1990-10-26 1995-12-05 Union Camp Patent Holding, 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
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
AT395028B (de) 1990-02-07 1992-08-25 Chemiefaser Lenzing Ag Verfahren zum chlorfreien bleichen von kunstfaserzellstoff
US5164044A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5164043A (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
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
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
US5389201A (en) * 1992-02-28 1995-02-14 International Paper Company Bleaching of kraft cellulosic pulp employing ozone and reduced consumption of chlorine containing bleaching agent
JP3121917B2 (ja) * 1992-07-08 2001-01-09 住友重機械工業株式会社 オゾンによるパルプ漂白方法
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
US5944952A (en) * 1995-07-26 1999-08-31 Beloit Technologies, Inc. Method for bleaching high consistency pulp with a gaseous bleaching reagent

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5126302A (en) * 1974-08-22 1976-03-04 Hitachi Shipbuilding Eng Co Sansoganjugasunyoru seruroosubutsushitsuno shorihoho
JPS526363A (en) * 1975-07-04 1977-01-18 Nikkan Ind Pipe bender

Also Published As

Publication number Publication date
FI70610B (fi) 1986-06-06
SE440372B (sv) 1985-07-29
JPS5430902A (en) 1979-03-07
FI70610C (fi) 1986-09-24
FI782032A7 (fi) 1978-12-28
CA1103409A (en) 1981-06-23

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