ZA951344B - Pulp bleaching method - Google Patents

Pulp bleaching method

Info

Publication number
ZA951344B
ZA951344B ZA951344A ZA951344A ZA951344B ZA 951344 B ZA951344 B ZA 951344B ZA 951344 A ZA951344 A ZA 951344A ZA 951344 A ZA951344 A ZA 951344A ZA 951344 B ZA951344 B ZA 951344B
Authority
ZA
South Africa
Prior art keywords
pulp bleaching
bleaching method
pulp
bleaching
Prior art date
Application number
ZA951344A
Other languages
English (en)
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 ZA951344B publication Critical patent/ZA951344B/xx

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)
ZA951344A 1994-03-14 1995-02-17 Pulp bleaching method ZA951344B (en)

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 (1)

Publication Number Publication Date
ZA951344B true ZA951344B (en) 1996-01-15

Family

ID=22794495

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA951344A ZA951344B (en) 1994-03-14 1995-02-17 Pulp bleaching method

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
FI122812B (fi) * 2007-06-15 2012-07-13 Andritz Oy Menetelmä nestevirtojen käsittelemiseksi sellutehtaalla
FI122246B (fi) * 2007-06-15 2011-10-31 Andritz Oy Menetelmä massan 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
FI951166A (fi) 1995-09-15
FI951166A0 (fi) 1995-03-13
NO950954D0 (no) 1995-03-13
SE9500826L (sv) 1995-09-15
US6210527B1 (en) 2001-04-03
SE9500826D0 (sv) 1995-03-07
AU685578B2 (en) 1998-01-22
NO950954L (no) 1995-09-15
AU1474795A (en) 1995-10-05

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