FI831473L - Behandling av massa med syre - Google Patents

Behandling av massa med syre

Info

Publication number
FI831473L
FI831473L FI831473A FI831473A FI831473L FI 831473 L FI831473 L FI 831473L FI 831473 A FI831473 A FI 831473A FI 831473 A FI831473 A FI 831473A FI 831473 L FI831473 L FI 831473L
Authority
FI
Finland
Prior art keywords
syre
behandling
massa
med
med syre
Prior art date
Application number
FI831473A
Other languages
English (en)
Other versions
FI831473A0 (fi
Inventor
Joseph Maria Bentvelzen
Gerald Donovan Crosby
Louis Otto 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 FI831473A0 publication Critical patent/FI831473A0/fi
Publication of FI831473L publication Critical patent/FI831473L/fi

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)
FI831473A 1981-09-04 1983-04-29 Behandling av massa med syre FI831473L (fi)

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 (2)

Publication Number Publication Date
FI831473A0 FI831473A0 (fi) 1983-04-29
FI831473L true FI831473L (fi) 1983-04-29

Family

ID=22161407

Family Applications (1)

Application Number Title Priority Date Filing Date
FI831473A FI831473L (fi) 1981-09-04 1983-04-29 Behandling av massa med syre

Country Status (6)

Country Link
EP (1) EP0088073A4 (fi)
JP (1) JPS58501383A (fi)
BR (1) BR8109039A (fi)
FI (1) FI831473L (fi)
NO (1) NO831454L (fi)
WO (1) WO1983000887A1 (fi)

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
EP0088073A4 (en) 1984-01-09
WO1983000887A1 (en) 1983-03-17
FI831473A0 (fi) 1983-04-29
EP0088073A1 (en) 1983-09-14
BR8109039A (pt) 1983-09-06
JPS58501383A (ja) 1983-08-18
NO831454L (no) 1983-04-25

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Legal Events

Date Code Title Description
FD Application lapsed

Owner name: WEYERHAEUSER COMPANY