JPS57183489A - Method and apparatus for oxygen delignification - Google Patents

Method and apparatus for oxygen delignification

Info

Publication number
JPS57183489A
JPS57183489A JP57057194A JP5719482A JPS57183489A JP S57183489 A JPS57183489 A JP S57183489A JP 57057194 A JP57057194 A JP 57057194A JP 5719482 A JP5719482 A JP 5719482A JP S57183489 A JPS57183489 A JP S57183489A
Authority
JP
Japan
Prior art keywords
oxygen delignification
delignification
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.)
Pending
Application number
JP57057194A
Other languages
Japanese (ja)
Inventor
Deii Maakamu Rarii
Efu Eruton Edowaado
Eru Magunotsuta Binsento
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
Publication of JPS57183489A publication Critical patent/JPS57183489A/en
Pending 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)
  • Water Treatment By Sorption (AREA)
  • Toilet Supplies (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
JP57057194A 1981-04-06 1982-04-06 Method and apparatus for oxygen delignification Pending JPS57183489A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
JPS57183489A true JPS57183489A (en) 1982-11-11

Family

ID=22951813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57057194A Pending JPS57183489A (en) 1981-04-06 1982-04-06 Method and apparatus for oxygen delignification

Country Status (8)

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

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5525195A (en) * 1989-02-15 1996-06-11 Union Camp Patent Holding, Inc. Process for high consistency delignification using a low consistency alkali pretreatment
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
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
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
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
US5188708A (en) * 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
US5181989A (en) * 1990-10-26 1993-01-26 Union Camp Patent Holdings, 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
US5472572A (en) * 1990-10-26 1995-12-05 Union Camp Patent Holding, Inc. Reactor for bleaching high consistency pulp with ozone
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
DE69221385T2 (en) * 1991-05-24 1997-12-11 Union Camp Patent Holding Two-stage pulp bleaching reactor and method for bleaching with ozone

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754417A (en) * 1970-01-08 1973-08-28 Canadian Ind Oxygen bleaching
JPS5046901A (en) * 1973-08-30 1975-04-26
JPS5691094A (en) * 1979-12-03 1981-07-23 Black Clawson Co Oxygen delignifying method and apparatus of medium concentrated pulp

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4198266A (en) * 1977-10-12 1980-04-15 Airco, Inc. Oxygen delignification of wood pulp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754417A (en) * 1970-01-08 1973-08-28 Canadian Ind Oxygen bleaching
JPS5046901A (en) * 1973-08-30 1975-04-26
JPS5691094A (en) * 1979-12-03 1981-07-23 Black Clawson Co Oxygen delignifying method and apparatus of medium concentrated pulp

Also Published As

Publication number Publication date
AU8191982A (en) 1982-10-14
CA1184709A (en) 1985-04-02
BR8201939A (en) 1983-03-08
NO821139L (en) 1982-10-07
FI821185L (en) 1982-10-07
FI821185A0 (en) 1982-04-05
EP0062539A1 (en) 1982-10-13
ZA821923B (en) 1983-02-23

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