FR43006E - Procédé de traitement de la pâte à papier, permettant de transformer la pâte à la soude ou au sulfate en pâte facilement blanchissable - Google Patents

Procédé de traitement de la pâte à papier, permettant de transformer la pâte à la soude ou au sulfate en pâte facilement blanchissable

Info

Publication number
FR43006E
FR43006E FR43006DA FR43006E FR 43006 E FR43006 E FR 43006E FR 43006D A FR43006D A FR 43006DA FR 43006 E FR43006 E FR 43006E
Authority
FR
France
Prior art keywords
pulp
soda
transform
making
treatment process
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
English (en)
French (fr)
Inventor
Gotthard Rosen
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 filed Critical
Application granted granted Critical
Publication of FR43006E publication Critical patent/FR43006E/fr
Expired legal-status Critical Current

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
    • D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
    • D21C9/083—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching with inorganic compounds
    • 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/05—Alpha cellulose

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FR43006D 1931-11-25 1932-10-15 Procédé de traitement de la pâte à papier, permettant de transformer la pâte à la soude ou au sulfate en pâte facilement blanchissable Expired FR43006E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1968223X 1931-11-25

Publications (1)

Publication Number Publication Date
FR43006E true FR43006E (fr) 1934-01-25

Family

ID=9682653

Family Applications (2)

Application Number Title Priority Date Filing Date
FR742062D Expired FR742062A (enrdf_load_stackoverflow) 1931-11-25
FR43006D Expired FR43006E (fr) 1931-11-25 1932-10-15 Procédé de traitement de la pâte à papier, permettant de transformer la pâte à la soude ou au sulfate en pâte facilement blanchissable

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR742062D Expired FR742062A (enrdf_load_stackoverflow) 1931-11-25

Country Status (2)

Country Link
US (1) US1968223A (enrdf_load_stackoverflow)
FR (2) FR43006E (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2805118A (en) * 1953-08-07 1957-09-03 Lawrence Walter Phalti Multistage process bleaching of alkaline-process wood pulps including an acid sour between two terminal alkaline hypochlorite stages
US3174896A (en) * 1961-12-14 1965-03-23 Rayonier Inc Treatment of spent caustic solution
BR102013031788A2 (pt) * 2013-12-10 2016-05-24 César Augusto Dumont Labuto processo e produtos para resistência material (física, química e biológica) a variações de temperatura e pressão (naturais, acidentais ou controladas), ao calor e ao fogo, ao contágio, criação, consumo e propagação destes, à degradação de materiais, à combustão, à pirofagia, à volatização, à emissão de gases, à liberação de carbono, ao centelhamento e à explosão, bem como para permitir a síntese controlada de estruturas, incarbonização, termo impressões e o seu uso

Also Published As

Publication number Publication date
US1968223A (en) 1934-07-31
FR742062A (enrdf_load_stackoverflow) 1933-02-24

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