CA1184709A - Methode et installation de defibrage a l'oxygene - Google Patents

Methode et installation de defibrage a l'oxygene

Info

Publication number
CA1184709A
CA1184709A CA000399565A CA399565A CA1184709A CA 1184709 A CA1184709 A CA 1184709A CA 000399565 A CA000399565 A CA 000399565A CA 399565 A CA399565 A CA 399565A CA 1184709 A CA1184709 A CA 1184709A
Authority
CA
Canada
Prior art keywords
pulp
reaction zone
gas
reaction
oxygen
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA000399565A
Other languages
English (en)
Inventor
Larry D. Markham
Edward F. Elton
Vincent L. Magnotta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Products and Chemicals Inc
Black Clawson Co
Original Assignee
Air Products and Chemicals Inc
Black Clawson Co
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 Air Products and Chemicals Inc, Black Clawson Co filed Critical Air Products and Chemicals Inc
Application granted granted Critical
Publication of CA1184709A publication Critical patent/CA1184709A/fr
Expired legal-status Critical Current

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)
CA000399565A 1981-04-06 1982-03-26 Methode et installation de defibrage a l'oxygene Expired CA1184709A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25140181A 1981-04-06 1981-04-06
US251,401 1981-04-06

Publications (1)

Publication Number Publication Date
CA1184709A true CA1184709A (fr) 1985-04-02

Family

ID=22951813

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000399565A Expired CA1184709A (fr) 1981-04-06 1982-03-26 Methode et installation de defibrage a l'oxygene

Country Status (8)

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

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5188708A (en) * 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
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
US5472572A (en) * 1990-10-26 1995-12-05 Union Camp Patent Holding, Inc. Reactor for bleaching high consistency pulp with ozone
US5181989A (en) * 1990-10-26 1993-01-26 Union Camp Patent Holdings, Inc. Reactor for bleaching high consistency pulp with ozone
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
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
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
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
NZ242792A (en) * 1991-05-24 1993-12-23 Union Camp Patent Holding Two-stage pulp bleaching reactor: pulp mixed with ozone in first stage.

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 (fr) * 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
NO821139L (no) 1982-10-07
FI821185A7 (fi) 1982-10-07
FI821185L (fi) 1982-10-07
ZA821923B (en) 1983-02-23
AU8191982A (en) 1982-10-14
FI821185A0 (fi) 1982-04-05
BR8201939A (pt) 1983-03-08
EP0062539A1 (fr) 1982-10-13
JPS57183489A (en) 1982-11-11

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Legal Events

Date Code Title Description
MKEX Expiry