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NO934597L - Fremgangsmåte for bleking av masse av ved - Google Patents

Fremgangsmåte for bleking av masse av ved

Info

Publication number
NO934597L
NO934597L NO934597A NO934597A NO934597L NO 934597 L NO934597 L NO 934597L NO 934597 A NO934597 A NO 934597A NO 934597 A NO934597 A NO 934597A NO 934597 L NO934597 L NO 934597L
Authority
NO
Norway
Prior art keywords
wood
bleaching pulp
added
refiner
eliminating
Prior art date
Application number
NO934597A
Other languages
English (en)
Other versions
NO934597D0 (no
Inventor
Jeffrey Nye
Martin G Fairbank
Original Assignee
Hoechst Ceram Tec Ag
Abitibi Price Inc
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 Hoechst Ceram Tec Ag, Abitibi Price Inc filed Critical Hoechst Ceram Tec Ag
Publication of NO934597D0 publication Critical patent/NO934597D0/no
Publication of NO934597L publication Critical patent/NO934597L/no

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
    • D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
    • D21C9/1089—Bleaching ; Apparatus therefor with reducing compounds with dithionites
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Processing Of Solid Wastes (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

Ved en fremgangsmåte for eliminere dannelsen av svoveldioksid ved en raf- finørblekeprosess blir en valgt mengde av et karbonat tilsatt til raffinør- innholdet tilnærmet på samme tid som natriumditionitt tilsettes.
NO934597A 1992-12-14 1993-12-14 Fremgangsmåte for bleking av masse av ved NO934597L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US99034892A 1992-12-14 1992-12-14
US5512193A 1993-04-30 1993-04-30

Publications (2)

Publication Number Publication Date
NO934597D0 NO934597D0 (no) 1993-12-14
NO934597L true NO934597L (no) 1994-06-15

Family

ID=26733862

Family Applications (1)

Application Number Title Priority Date Filing Date
NO934597A NO934597L (no) 1992-12-14 1993-12-14 Fremgangsmåte for bleking av masse av ved

Country Status (10)

Country Link
US (1) US5607547A (no)
EP (1) EP0604088B1 (no)
JP (1) JPH073684A (no)
AT (1) ATE159063T1 (no)
BR (1) BR9305032A (no)
CA (1) CA2111261A1 (no)
DE (1) DE69314446T2 (no)
DK (1) DK0604088T3 (no)
FI (1) FI935583A (no)
NO (1) NO934597L (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO20032722L (no) 2002-06-28 2003-12-29 Rohm & Haas Fremgangsmåte til klaring av pulp med hydrosulfittl degree sning
JP5371955B2 (ja) * 2007-04-24 2013-12-18 ビーエーエスエフ ソシエタス・ヨーロピア 漂白された木材粒子及び淡色ないし白色の木材料の製造方法
EP2924166A1 (de) 2014-03-25 2015-09-30 Basf Se Verfahren zur Herstellung von gebleichtem Holzfaserstoff

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2883826A (en) * 1953-01-07 1959-04-28 Univ Minnesota Process for conditioning plant fibers for spinning
US3013931A (en) * 1957-02-01 1961-12-19 Hawaiian Dev Company Ltd Printing paper and process of making the same
SE303088B (no) * 1963-05-31 1968-08-12 Defibrator Ab
US3804944A (en) * 1970-10-02 1974-04-16 Virginia Chemicals Inc Sodium dithionite solution stablization
DE2107959A1 (de) * 1971-02-19 1972-08-31 Basf Ag Stabilisierte Natriumdithionitzubereitungen
US3985674A (en) * 1974-12-10 1976-10-12 Virginia Chemicals Inc. Stabilized sodium dithionite solutions
US4411737A (en) * 1979-12-13 1983-10-25 Owens-Illinois, Inc. Pulp treating process
US4534954A (en) * 1982-08-17 1985-08-13 Virginia Chemicals Inc. Sodium hydrosulfite slurries
DE3406322A1 (de) * 1984-02-22 1985-08-22 Basf Ag, 6700 Ludwigshafen Stabilisierte, wasser enthaltende, alkalisch eingestellte natriumdithionitzubereitungen
GB2215350B (en) * 1988-03-16 1992-05-20 Thiokol Morton Inc Process for bleaching mechanical wood pulp
DE4115575A1 (de) * 1991-05-13 1992-11-19 Brueggemann L Kg Bleichmittel

Also Published As

Publication number Publication date
DE69314446T2 (de) 1998-03-19
JPH073684A (ja) 1995-01-06
FI935583A (fi) 1994-06-15
US5607547A (en) 1997-03-04
BR9305032A (pt) 1994-06-21
DK0604088T3 (da) 1997-10-27
DE69314446D1 (de) 1997-11-13
EP0604088A1 (en) 1994-06-29
EP0604088B1 (en) 1997-10-08
ATE159063T1 (de) 1997-10-15
CA2111261A1 (en) 1994-06-15
NO934597D0 (no) 1993-12-14
FI935583A0 (fi) 1993-12-13

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