BR8201939A - Aparelho e processo para a deslignificao por oxigenio continua de polpa - Google Patents

Aparelho e processo para a deslignificao por oxigenio continua de polpa

Info

Publication number
BR8201939A
BR8201939A BR8201939A BR8201939A BR8201939A BR 8201939 A BR8201939 A BR 8201939A BR 8201939 A BR8201939 A BR 8201939A BR 8201939 A BR8201939 A BR 8201939A BR 8201939 A BR8201939 A BR 8201939A
Authority
BR
Brazil
Prior art keywords
designation
continuous pulp
pulp oxygen
oxygen
continuous
Prior art date
Application number
BR8201939A
Other languages
English (en)
Inventor
Larry D Markham
Edward F Elton
Vincent L Magnotta
Original Assignee
Black Clawson Co
Products & Chemicals 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 Black Clawson Co, Products & Chemicals Inc filed Critical Black Clawson Co
Publication of BR8201939A publication Critical patent/BR8201939A/pt

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
    • D21C9/1026—Other features in bleaching processes
    • 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
    • D21C9/1068—Bleaching ; Apparatus therefor with O2

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Toilet Supplies (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
  • Water Treatment By Sorption (AREA)
BR8201939A 1981-04-06 1982-04-05 Aparelho e processo para a deslignificao por oxigenio continua de polpa BR8201939A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25140181A 1981-04-06 1981-04-06

Publications (1)

Publication Number Publication Date
BR8201939A true BR8201939A (pt) 1983-03-08

Family

ID=22951813

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8201939A BR8201939A (pt) 1981-04-06 1982-04-05 Aparelho e processo para a deslignificao por oxigenio continua de polpa

Country Status (8)

Country Link
EP (1) EP0062539A1 (pt)
JP (1) JPS57183489A (pt)
AU (1) AU8191982A (pt)
BR (1) BR8201939A (pt)
CA (1) CA1184709A (pt)
FI (1) FI821185L (pt)
NO (1) NO821139L (pt)
ZA (1) ZA821923B (pt)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5217574A (en) * 1989-02-15 1993-06-08 Union Camp Patent Holdings Inc. Process for oxygen delignifying high consistency pulp by removing and recycling pressate from alkaline pulp
US5472572A (en) * 1990-10-26 1995-12-05 Union Camp Patent Holding, Inc. Reactor for bleaching high consistency pulp with ozone
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
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
US5525195A (en) * 1989-02-15 1996-06-11 Union Camp Patent Holding, Inc. Process for high consistency delignification using a low consistency alkali pretreatment
US5085734A (en) * 1989-02-15 1992-02-04 Union Camp Patent Holding, Inc. Methods of high consistency oxygen delignification using a low consistency alkali pretreatment
US5181989A (en) * 1990-10-26 1993-01-26 Union Camp Patent Holdings, Inc. Reactor for bleaching high consistency pulp with ozone
US5188708A (en) * 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
US5173153A (en) * 1991-01-03 1992-12-22 Union Camp Patent Holding, Inc. Process for enhanced oxygen delignification using high consistency and a split alkali addition
US5164043A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5164044A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5520783A (en) * 1990-10-26 1996-05-28 Union Camp Patent Holding, Inc. Apparatus for bleaching high consistency pulp with ozone
US5174861A (en) * 1990-10-26 1992-12-29 Union Camp Patent Holdings, Inc. Method of 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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA918978A (en) * 1970-01-08 1973-01-16 G. Jamieson Allan Oxygen bleaching
JPS5119481B2 (pt) * 1973-08-30 1976-06-17
US4198266A (en) * 1977-10-12 1980-04-15 Airco, Inc. Oxygen delignification of wood pulp
US4363697A (en) * 1979-12-03 1982-12-14 The Black Clawson Company Method for medium consistency oxygen delignification of pulp

Also Published As

Publication number Publication date
CA1184709A (en) 1985-04-02
ZA821923B (en) 1983-02-23
JPS57183489A (en) 1982-11-11
EP0062539A1 (en) 1982-10-13
AU8191982A (en) 1982-10-14
FI821185A7 (fi) 1982-10-07
FI821185L (fi) 1982-10-07
FI821185A0 (fi) 1982-04-05
NO821139L (no) 1982-10-07

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