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FI812725A7 - Menetelmä ja laite massan delignifioimiseksi hapen avulla. - Google Patents

Menetelmä ja laite massan delignifioimiseksi hapen avulla. Download PDF

Info

Publication number
FI812725A7
FI812725A7 FI812725A FI812725A FI812725A7 FI 812725 A7 FI812725 A7 FI 812725A7 FI 812725 A FI812725 A FI 812725A FI 812725 A FI812725 A FI 812725A FI 812725 A7 FI812725 A7 FI 812725A7
Authority
FI
Finland
Prior art keywords
oxygen
delignifying pulp
delignifying
pulp
Prior art date
Application number
FI812725A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI812725L (fi
Inventor
Edward Fracis Elton
Vincent L Magnotta
Original Assignee
Air Prod & Chem
The 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 Prod & Chem, The Black Clawson Co filed Critical Air Prod & Chem
Publication of FI812725A7 publication Critical patent/FI812725A7/fi
Publication of FI812725L publication Critical patent/FI812725L/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
    • D21C9/1068—Bleaching ; Apparatus therefor with O2

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • External Artificial Organs (AREA)
FI812725A 1980-09-05 1981-09-03 Foerfarande och anordning foer delignifiering av massa med hjaelp av syre FI812725L (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18451480A 1980-09-05 1980-09-05

Publications (2)

Publication Number Publication Date
FI812725A7 true FI812725A7 (fi) 1982-03-06
FI812725L FI812725L (fi) 1982-03-06

Family

ID=22677195

Family Applications (1)

Application Number Title Priority Date Filing Date
FI812725A FI812725L (fi) 1980-09-05 1981-09-03 Foerfarande och anordning foer delignifiering av massa med hjaelp av syre

Country Status (8)

Country Link
EP (1) EP0047656A1 (no)
JP (1) JPS57121687A (no)
AU (1) AU543014B2 (no)
CA (1) CA1176408A (no)
ES (1) ES8205285A1 (no)
FI (1) FI812725L (no)
NO (1) NO813009L (no)
ZA (1) ZA816105B (no)

Families Citing this family (4)

* 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
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
US5672247A (en) * 1995-03-03 1997-09-30 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
US5736004A (en) * 1995-03-03 1998-04-07 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching

Family Cites Families (3)

* 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 (no) * 1973-08-30 1976-06-17
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
EP0047656A1 (en) 1982-03-17
ZA816105B (en) 1982-09-29
AU7492281A (en) 1982-03-11
JPS57121687A (en) 1982-07-29
ES505210A0 (es) 1982-06-01
NO813009L (no) 1982-03-08
CA1176408A (en) 1984-10-23
FI812725L (fi) 1982-03-06
ES8205285A1 (es) 1982-06-01
AU543014B2 (en) 1985-03-28

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Legal Events

Date Code Title Description
FD Application lapsed

Owner name: AIR PRODUCTS AND CHEMICALS, INC.

Owner name: THE BLACK CLAWSON CO