BR8109039A - Tratamento de polpa com oxigenio - Google Patents

Tratamento de polpa com oxigenio

Info

Publication number
BR8109039A
BR8109039A BR8109039A BR8109039A BR8109039A BR 8109039 A BR8109039 A BR 8109039A BR 8109039 A BR8109039 A BR 8109039A BR 8109039 A BR8109039 A BR 8109039A BR 8109039 A BR8109039 A BR 8109039A
Authority
BR
Brazil
Prior art keywords
oxygen
pulp treatment
pulp
treatment
Prior art date
Application number
BR8109039A
Other languages
English (en)
Portuguese (pt)
Inventor
Joseph M Bentvelzen
Gerald D Crosby
Louis O Torregrossa
Original Assignee
Weyerhaeuser 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 Weyerhaeuser Co filed Critical Weyerhaeuser Co
Publication of BR8109039A publication Critical patent/BR8109039A/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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
BR8109039A 1981-09-04 1981-09-04 Tratamento de polpa com oxigenio BR8109039A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1981/001186 WO1983000887A1 (en) 1981-09-04 1981-09-04 Method of treating pulp with plural oxygen stages

Publications (1)

Publication Number Publication Date
BR8109039A true BR8109039A (pt) 1983-09-06

Family

ID=22161407

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8109039A BR8109039A (pt) 1981-09-04 1981-09-04 Tratamento de polpa com oxigenio

Country Status (6)

Country Link
EP (1) EP0088073A4 (de)
JP (1) JPS58501383A (de)
BR (1) BR8109039A (de)
FI (1) FI831473A7 (de)
NO (1) NO831454L (de)
WO (1) WO1983000887A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3446301A1 (de) * 1984-12-19 1986-06-19 Degussa Ag, 6000 Frankfurt Verfahren zur delignifizierung von sulfatzellstoffen
US4946556A (en) * 1989-04-25 1990-08-07 Kamyr, Inc. Method of oxygen delignifying wood pulp with between stage washing
US7001483B2 (en) * 2003-08-05 2006-02-21 Weyerhaeuser Company Apparatus for making carboxylated pulp fibers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA897361A (en) * 1969-12-19 1972-04-11 E. Mallett Samuel Oxygen bleaching process
US3832276A (en) * 1973-03-07 1974-08-27 Int Paper Co Delignification and bleaching of a cellulose pulp slurry with oxygen
US4161421A (en) * 1977-09-13 1979-07-17 Kamyr, Inc. Method and apparatus for continuous oxygen bleaching of cellulosic pulp

Also Published As

Publication number Publication date
EP0088073A1 (de) 1983-09-14
FI831473A0 (fi) 1983-04-29
FI831473L (fi) 1983-04-29
WO1983000887A1 (en) 1983-03-17
NO831454L (no) 1983-04-25
EP0088073A4 (de) 1984-01-09
JPS58501383A (ja) 1983-08-18
FI831473A7 (fi) 1983-04-29

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