FI67241B - Saett foer blekning av cellulosahaltiga material - Google Patents

Saett foer blekning av cellulosahaltiga material Download PDF

Info

Publication number
FI67241B
FI67241B FI811800A FI811800A FI67241B FI 67241 B FI67241 B FI 67241B FI 811800 A FI811800 A FI 811800A FI 811800 A FI811800 A FI 811800A FI 67241 B FI67241 B FI 67241B
Authority
FI
Finland
Prior art keywords
pulp
alkali
treatment
oxygen
process according
Prior art date
Application number
FI811800A
Other languages
English (en)
Finnish (fi)
Other versions
FI811800A0 (fi
Inventor
Raimo Malinen
Original Assignee
Aga Ab
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 Aga Ab filed Critical Aga Ab
Priority to FI811800A priority Critical patent/FI67241B/fi
Publication of FI811800A0 publication Critical patent/FI811800A0/fi
Priority to MX19296282A priority patent/MX156288A/es
Priority to BR8203307A priority patent/BR8203307A/pt
Priority to FR8210005A priority patent/FR2507639A1/fr
Application granted granted Critical
Publication of FI67241B publication Critical patent/FI67241B/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
    • D21C9/1026—Other features in bleaching processes
    • 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)
FI811800A 1981-06-10 1981-06-10 Saett foer blekning av cellulosahaltiga material FI67241B (fi)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI811800A FI67241B (fi) 1981-06-10 1981-06-10 Saett foer blekning av cellulosahaltiga material
MX19296282A MX156288A (es) 1981-06-10 1982-06-01 Mejoras a procedimiento para el blanqueado de material-celulosico
BR8203307A BR8203307A (pt) 1981-06-10 1982-06-04 Processo para alvejamento e deslignificacao de materiais que contem celulose
FR8210005A FR2507639A1 (fr) 1981-06-10 1982-06-09 Procede de blanchiment de matieres contenant de la cellulose

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI811800 1981-06-10
FI811800A FI67241B (fi) 1981-06-10 1981-06-10 Saett foer blekning av cellulosahaltiga material

Publications (2)

Publication Number Publication Date
FI811800A0 FI811800A0 (fi) 1981-06-10
FI67241B true FI67241B (fi) 1984-10-31

Family

ID=8514486

Family Applications (1)

Application Number Title Priority Date Filing Date
FI811800A FI67241B (fi) 1981-06-10 1981-06-10 Saett foer blekning av cellulosahaltiga material

Country Status (4)

Country Link
BR (1) BR8203307A (cg-RX-API-DMAC10.html)
FI (1) FI67241B (cg-RX-API-DMAC10.html)
FR (1) FR2507639A1 (cg-RX-API-DMAC10.html)
MX (1) MX156288A (cg-RX-API-DMAC10.html)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3044577B1 (fr) 2015-12-07 2017-12-22 Timothee Boitouzet Procede de delignification partielle et de remplissage d'un materiau ligno-cellulosique, et structure de materiau composite obtenue par ce procede
FR3077895B1 (fr) 2018-02-09 2020-02-28 Sas Woodoo Dispositif de detection tactile avec interface tactile en materiau composite
FR3067275B1 (fr) 2017-06-07 2022-08-12 Timothee Boitouzet Procede de delignification partielle par voie supercritique ou subcritique et de remplissage d'un materiau ligno-cellulosique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA897361A (en) * 1969-12-19 1972-04-11 E. Mallett Samuel Oxygen bleaching process
US3832276A (en) * 1973-03-07 1974-08-27 Int Paper Co Delignification and bleaching of a cellulose pulp slurry with oxygen
SE462919B (sv) * 1979-05-11 1990-09-17 Sunds Defibrator Ind Ab Saett att genomfoera alkaliextraktion av cellulosamassa i naervaro av syre

Also Published As

Publication number Publication date
MX156288A (es) 1988-08-08
BR8203307A (pt) 1983-05-24
FI811800A0 (fi) 1981-06-10
FR2507639B1 (cg-RX-API-DMAC10.html) 1985-04-12
FR2507639A1 (fr) 1982-12-17

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