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BR8305362A - Aparelho e processo para deslignificacao de um material fibroso com oxigenio - Google Patents

Aparelho e processo para deslignificacao de um material fibroso com oxigenio

Info

Publication number
BR8305362A
BR8305362A BR8305362A BR8305362A BR8305362A BR 8305362 A BR8305362 A BR 8305362A BR 8305362 A BR8305362 A BR 8305362A BR 8305362 A BR8305362 A BR 8305362A BR 8305362 A BR8305362 A BR 8305362A
Authority
BR
Brazil
Prior art keywords
designification
oxygen
fibrous material
fibrous
Prior art date
Application number
BR8305362A
Other languages
English (en)
Inventor
Larry D Markham
Original Assignee
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 Black Clawson Co filed Critical Black Clawson Co
Publication of BR8305362A publication Critical patent/BR8305362A/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
    • D21C9/1068—Bleaching ; Apparatus therefor with O2

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Paper (AREA)
BR8305362A 1982-09-30 1983-09-29 Aparelho e processo para deslignificacao de um material fibroso com oxigenio BR8305362A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43144082A 1982-09-30 1982-09-30
US50168283A 1983-06-06 1983-06-06

Publications (1)

Publication Number Publication Date
BR8305362A true BR8305362A (pt) 1984-05-08

Family

ID=27029037

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8305362A BR8305362A (pt) 1982-09-30 1983-09-29 Aparelho e processo para deslignificacao de um material fibroso com oxigenio

Country Status (5)

Country Link
EP (1) EP0106609A1 (pt)
AU (1) AU1730083A (pt)
BR (1) BR8305362A (pt)
FI (1) FI833513A7 (pt)
NO (1) NO832898L (pt)

Families Citing this family (13)

* 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
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
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
US5181989A (en) * 1990-10-26 1993-01-26 Union Camp Patent Holdings, Inc. Reactor for bleaching high consistency pulp with ozone
US5525195A (en) * 1989-02-15 1996-06-11 Union Camp Patent Holding, Inc. Process for high consistency delignification using a low consistency alkali pretreatment
US5188708A (en) * 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
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
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
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
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 (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516447A (en) * 1947-02-24 1950-07-25 Elmer R Burling Method and apparatus for chemical treatment
US2772138A (en) * 1952-12-31 1956-11-27 Hercules Powder Co Ltd Continuous bleaching process
US3992248A (en) * 1969-05-19 1976-11-16 Stadler Hurter Limited Continuous feeding system for treatment towers
US3951733A (en) * 1974-11-06 1976-04-20 International Paper Company Delignification and bleaching of wood pulp with oxygen
JPS52132101A (en) * 1976-04-30 1977-11-05 Toyo Pulp Co Ltd Process and apparatus for treating cellulose material
US4209359A (en) * 1978-10-23 1980-06-24 International Paper Company Process for removing residual oxygen from oxygen-bleached pulp

Also Published As

Publication number Publication date
FI833513A0 (fi) 1983-09-29
EP0106609A1 (en) 1984-04-25
AU1730083A (en) 1984-04-05
NO832898L (no) 1984-04-02
FI833513L (fi) 1984-03-31
FI833513A7 (fi) 1984-03-31

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