BE656601A - - Google Patents

Info

Publication number
BE656601A
BE656601A BE656601A BE656601A BE656601A BE 656601 A BE656601 A BE 656601A BE 656601 A BE656601 A BE 656601A BE 656601 A BE656601 A BE 656601A BE 656601 A BE656601 A BE 656601A
Authority
BE
Belgium
Prior art keywords
sep
sodium
borohydride
bisulfite
fibers
Prior art date
Application number
BE656601A
Other languages
English (en)
French (fr)
Inventor
R Kindron
L Cartsunis
Original Assignee
Fmc Corp
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 Fmc Corp filed Critical Fmc Corp
Publication of BE656601A publication Critical patent/BE656601A/fr

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
    • 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
    • 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1047—Conserving the bleached pulp

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
BE656601A 1963-03-07 1964-12-03 BE656601A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26342463A 1963-03-07 1963-03-07

Publications (1)

Publication Number Publication Date
BE656601A true BE656601A (pt) 1964-12-31

Family

ID=23001721

Family Applications (1)

Application Number Title Priority Date Filing Date
BE656601A BE656601A (pt) 1963-03-07 1964-12-03

Country Status (3)

Country Link
BE (1) BE656601A (pt)
DE (1) DE1546249A1 (pt)
FI (1) FI43525B (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2639371A1 (fr) * 1988-11-24 1990-05-25 Atochem Procede de blanchiment de pates desencrees

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2639371A1 (fr) * 1988-11-24 1990-05-25 Atochem Procede de blanchiment de pates desencrees
EP0374057A2 (fr) * 1988-11-24 1990-06-20 Elf Atochem S.A. Procédé de blanchiment de pâtes désencrées
EP0374057A3 (fr) * 1988-11-24 1991-07-10 Elf Atochem S.A. Procédé de blanchiment de pâtes désencrées
US5449436A (en) * 1988-11-24 1995-09-12 Atochem Bleaching of deinked paper/wood pulp

Also Published As

Publication number Publication date
FI43525B (pt) 1970-12-31
DE1546249A1 (de) 1970-03-26

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