FI790318A7 - Blekningsfoerfarande foer pappersmassa - Google Patents

Blekningsfoerfarande foer pappersmassa Download PDF

Info

Publication number
FI790318A7
FI790318A7 FI790318A FI790318A FI790318A7 FI 790318 A7 FI790318 A7 FI 790318A7 FI 790318 A FI790318 A FI 790318A FI 790318 A FI790318 A FI 790318A FI 790318 A7 FI790318 A7 FI 790318A7
Authority
FI
Finland
Prior art keywords
papersmassa
blekningsfoerfarande
foer
foer papersmassa
blekningsfoerfarande foer
Prior art date
Application number
FI790318A
Other languages
English (en)
Finnish (fi)
Inventor
Jacques Carles
Michel Durand
Original Assignee
Europeen Cellulose
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 Europeen Cellulose filed Critical Europeen Cellulose
Publication of FI790318A7 publication Critical patent/FI790318A7/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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • 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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI790318A 1978-01-31 1979-01-31 Blekningsfoerfarande foer pappersmassa FI790318A7 (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7802694A FR2416297A1 (fr) 1978-01-31 1978-01-31 Procede anti-polluant de blanchiment de pate a papier

Publications (1)

Publication Number Publication Date
FI790318A7 true FI790318A7 (fi) 1979-08-01

Family

ID=9204036

Family Applications (1)

Application Number Title Priority Date Filing Date
FI790318A FI790318A7 (fi) 1978-01-31 1979-01-31 Blekningsfoerfarande foer pappersmassa

Country Status (9)

Country Link
JP (1) JPS54116404A (enrdf_load_stackoverflow)
BE (1) BE873765A (enrdf_load_stackoverflow)
BR (1) BR7900561A (enrdf_load_stackoverflow)
DE (1) DE2903014A1 (enrdf_load_stackoverflow)
FI (1) FI790318A7 (enrdf_load_stackoverflow)
FR (1) FR2416297A1 (enrdf_load_stackoverflow)
OA (1) OA06169A (enrdf_load_stackoverflow)
SE (1) SE7900793L (enrdf_load_stackoverflow)
ZA (1) ZA79388B (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5011572A (en) * 1989-05-19 1991-04-30 Fmc Corporation Two stage process for the oxygen delignification of lignocellulosic fibers with peroxide reinforcement in the first stage
SE9000340L (sv) * 1990-01-31 1991-08-01 Eka Nobel Ab Foerfarande vid blekning av lignocellulosahaltigt material
CA2044100A1 (en) * 1991-06-07 1992-12-08 Janice Hamilton Biobleaching process

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2100496A (en) * 1936-02-18 1937-11-30 Mathieson Alkali Works Inc Bleaching of cellulosic materials
US2120678A (en) * 1936-03-30 1938-06-14 Hammermill Paper Co Bleaching and purifying process
US2494542A (en) * 1946-05-02 1950-01-17 Niagara Alkali Company Method of bleaching pulp
CA897361A (en) * 1969-12-19 1972-04-11 E. Mallett Samuel Oxygen bleaching process
DE2538673C2 (de) * 1975-08-30 1986-01-16 Degussa Ag, 6000 Frankfurt Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz

Also Published As

Publication number Publication date
JPS54116404A (en) 1979-09-10
SE7900793L (sv) 1979-08-01
DE2903014A1 (de) 1979-08-02
ZA79388B (en) 1980-02-27
FR2416297B1 (enrdf_load_stackoverflow) 1983-01-07
OA06169A (fr) 1981-06-30
FR2416297A1 (fr) 1979-08-31
BR7900561A (pt) 1979-08-28
BE873765A (fr) 1979-07-30

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