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NO950954L - Fremgangsmåte ved massebleking - Google Patents

Fremgangsmåte ved massebleking

Info

Publication number
NO950954L
NO950954L NO950954A NO950954A NO950954L NO 950954 L NO950954 L NO 950954L NO 950954 A NO950954 A NO 950954A NO 950954 A NO950954 A NO 950954A NO 950954 L NO950954 L NO 950954L
Authority
NO
Norway
Prior art keywords
pulp
white liquor
washed
oxygen
wood
Prior art date
Application number
NO950954A
Other languages
English (en)
Norwegian (no)
Other versions
NO950954D0 (no
Inventor
Mark J Kirschner
Rustam H Sethna
Original Assignee
Boc Group 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 Boc Group Inc filed Critical Boc Group Inc
Publication of NO950954D0 publication Critical patent/NO950954D0/no
Publication of NO950954L publication Critical patent/NO950954L/no

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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
NO950954A 1994-03-14 1995-03-13 Fremgangsmåte ved massebleking NO950954L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/213,290 US6210527B1 (en) 1994-03-14 1994-03-14 Pulp bleaching method wherein an ozone bleaching waste stream is scrubbed to form an oxygen containing stream

Publications (2)

Publication Number Publication Date
NO950954D0 NO950954D0 (no) 1995-03-13
NO950954L true NO950954L (no) 1995-09-15

Family

ID=22794495

Family Applications (1)

Application Number Title Priority Date Filing Date
NO950954A NO950954L (no) 1994-03-14 1995-03-13 Fremgangsmåte ved massebleking

Country Status (6)

Country Link
US (1) US6210527B1 (fi)
AU (1) AU685578B2 (fi)
FI (1) FI951166A (fi)
NO (1) NO950954L (fi)
SE (1) SE9500826L (fi)
ZA (1) ZA951344B (fi)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030044344A1 (en) * 2001-06-15 2003-03-06 Saucedo Victor M. Method for controlling polysulfide production
FI122246B (fi) * 2007-06-15 2011-10-31 Andritz Oy Menetelmä massan käsittelemiseksi sellutehtaalla
FI122812B (fi) * 2007-06-15 2012-07-13 Andritz Oy Menetelmä nestevirtojen käsittelemiseksi sellutehtaalla
FI20080008L (fi) * 2008-01-08 2009-07-09 Andritz Oy Otsonipitoisen kaasun käsittely massan valkaisun yhteydessä

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE343092B (fi) * 1970-06-22 1972-02-28 Mo Och Domsjoe Ab
US3860479A (en) 1971-06-18 1975-01-14 Union Camp Corp Catalytic oxidation of alkaline pulping liquor
US4131508A (en) 1973-03-12 1978-12-26 Kamyr Inc. Recovery system for oxygen bleaching of pulp
AU473185B2 (en) 1973-07-25 1976-06-17 Mooch Domsjo Aktiebolag A method for producing oxidized white liquor
SE379069B (fi) 1973-08-27 1975-09-22 Kamyr Ab
SE381897C (sv) 1973-11-23 1977-05-23 Skogegarnas Ind Ab Sett for satsvis alkalisk massakokning i kombination med kontinuerlig syredelignifiering
US4172006A (en) 1976-08-26 1979-10-23 Weyerhaeuser Company Method of delignifying wood chips with oxygen by adding cooking liquor under pressure
US4161421A (en) 1977-09-13 1979-07-17 Kamyr, Inc. Method and apparatus for continuous oxygen bleaching of cellulosic pulp
NO144711C (no) 1978-04-04 1981-10-21 Myrens Verksted As Fremgangsmaate til bleking av oksygendelignifiserte celluloseholdige masser med ozon
US4372812A (en) 1978-04-07 1983-02-08 International Paper Company Chlorine free process for bleaching lignocellulosic pulp
US4619733A (en) 1983-11-30 1986-10-28 Kooi Boon Lam Pollution free pulping process using recycled wash effluent from multiple bleach stages to remove black liquor and recovering sodium hydroxide from the black liquor
AT380496B (de) 1984-06-27 1986-05-26 Steyrermuehl Papier Verfahren und reaktor zur delignifizierung von zellstoff mit sauerstoff
JPS62247812A (ja) 1986-04-18 1987-10-28 Chiyoda Chem Eng & Constr Co Ltd 加圧式上向流深層濾過方法及びそれに用いる濾過器
SE465730C (sv) 1988-03-17 2001-10-08 Kvaerner Pulping Tech Sätt vid delignifiering av fiberhaltig cellulosamassa
US4902381A (en) 1988-12-09 1990-02-20 Kamyr, Inc. Method of bleaching pulp with ozone-chlorine mixtures
US5179021A (en) 1989-02-10 1993-01-12 Gil Inc. (Now Ici Canada Inc.) Pulp bleaching process comprising oxygen delignification and xylanase enzyme treatment
AT395028B (de) 1990-02-07 1992-08-25 Chemiefaser Lenzing Ag Verfahren zum chlorfreien bleichen von kunstfaserzellstoff
US5164043A (en) 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US6126781A (en) * 1991-08-01 2000-10-03 Union Camp Patent Holding, Inc. Process for conditioning ozone gas recycle stream in ozone pulp bleaching

Also Published As

Publication number Publication date
SE9500826D0 (sv) 1995-03-07
AU685578B2 (en) 1998-01-22
FI951166A (fi) 1995-09-15
ZA951344B (en) 1996-01-15
AU1474795A (en) 1995-10-05
SE9500826L (sv) 1995-09-15
FI951166A0 (fi) 1995-03-13
NO950954D0 (no) 1995-03-13
US6210527B1 (en) 2001-04-03

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application