FI62360B - Foerfarande foer delignifiering och blekning av cellulosamassa - Google Patents

Foerfarande foer delignifiering och blekning av cellulosamassa Download PDF

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Publication number
FI62360B
FI62360B FI751138A FI751138A FI62360B FI 62360 B FI62360 B FI 62360B FI 751138 A FI751138 A FI 751138A FI 751138 A FI751138 A FI 751138A FI 62360 B FI62360 B FI 62360B
Authority
FI
Finland
Prior art keywords
pulp
och
cellulosamassa
blekning
oxygen
Prior art date
Application number
FI751138A
Other languages
English (en)
Finnish (fi)
Other versions
FI751138A (no
Inventor
Per Koch Christensen
Original Assignee
Per Koch Christensen
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 Per Koch Christensen filed Critical Per Koch Christensen
Publication of FI751138A publication Critical patent/FI751138A/fi
Application granted granted Critical
Publication of FI62360B publication Critical patent/FI62360B/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)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • External Artificial Organs (AREA)
FI751138A 1974-04-17 1975-04-16 Foerfarande foer delignifiering och blekning av cellulosamassa FI62360B (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO741375A NO138491B (no) 1974-04-17 1974-04-17 Fremgangsmaate ved delignifisering og bleking av cellulosemasse
NO741375 1974-04-17

Publications (2)

Publication Number Publication Date
FI751138A FI751138A (no) 1975-10-18
FI62360B true FI62360B (fi) 1982-08-31

Family

ID=19881564

Family Applications (1)

Application Number Title Priority Date Filing Date
FI751138A FI62360B (fi) 1974-04-17 1975-04-16 Foerfarande foer delignifiering och blekning av cellulosamassa

Country Status (8)

Country Link
US (1) US4132589A (no)
AT (1) ATA276775A (no)
CA (1) CA1042612A (no)
DE (1) DE2515517A1 (no)
FI (1) FI62360B (no)
FR (1) FR2268107B1 (no)
NO (1) NO138491B (no)
SE (1) SE415579B (no)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2721402C2 (de) * 1977-05-12 1984-04-12 Degussa Ag, 6000 Frankfurt Verfahren zum Bleichen von Zellstoff
US5364465A (en) * 1992-12-07 1994-11-15 Archer Daniels Midland Company Method of producing protein products for bright paper coating applications
US5676846A (en) * 1996-05-16 1997-10-14 Degussa Corporation Process for the detoxification of effluents containing free or complexed cyanides
US7052578B2 (en) * 2000-01-28 2006-05-30 Martin Marietta Magnesia Specialties, Inc. Process employing magnesium hydroxide in peroxide bleaching of mechanical pulp
US20140182582A1 (en) * 2012-12-31 2014-07-03 Api Intellectual Property Holdings, Llc Processes for making cellulose with very low lignin content for glucose, high-purity cellulose, or cellulose derivatives
CN114908598B (zh) * 2022-02-26 2022-12-09 北京林业大学 一种纸浆氧漂方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US321452A (en) * 1885-07-07 Goldsbtjby haedbn pond
US415608A (en) * 1889-11-19 Process of bleaching
CA918978A (en) * 1970-01-08 1973-01-16 G. Jamieson Allan Oxygen bleaching
US3843473A (en) * 1971-08-23 1974-10-22 Mo Och Domsjoe Ab Impregnation of cellulosic pulp under superatmospheric pressure with waste alkaline oxygan gas bleaching liquor followed by oxygen-alkali bleaching

Also Published As

Publication number Publication date
US4132589A (en) 1979-01-02
FI751138A (no) 1975-10-18
ATA276775A (de) 1978-01-15
NO138491B (no) 1978-06-05
SE7504421L (sv) 1975-10-20
CA1042612A (en) 1978-11-21
SE415579B (sv) 1980-10-13
DE2515517A1 (de) 1975-10-30
FR2268107B1 (no) 1980-01-25
NO741375L (no) 1975-10-20
FR2268107A1 (no) 1975-11-14

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Legal Events

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Owner name: CHRISTENSEN, PER KOCH