BE873765A - ANTIPOLLUTANT BLEACHING PROCESS FOR PAPER PULP - Google Patents

ANTIPOLLUTANT BLEACHING PROCESS FOR PAPER PULP

Info

Publication number
BE873765A
BE873765A BE0/193124A BE193124A BE873765A BE 873765 A BE873765 A BE 873765A BE 0/193124 A BE0/193124 A BE 0/193124A BE 193124 A BE193124 A BE 193124A BE 873765 A BE873765 A BE 873765A
Authority
BE
Belgium
Prior art keywords
antipollutant
paper pulp
bleaching process
bleaching
pulp
Prior art date
Application number
BE0/193124A
Other languages
French (fr)
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 BE873765A publication Critical patent/BE873765A/en

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)
BE0/193124A 1978-01-31 1979-01-29 ANTIPOLLUTANT BLEACHING PROCESS FOR PAPER PULP BE873765A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7802694A FR2416297A1 (en) 1978-01-31 1978-01-31 Three-stage paper pulp bleaching - giving high whiteness level, by treating with chlorine, hypochlorite or peroxide oxidant and chlorine di:oxide

Publications (1)

Publication Number Publication Date
BE873765A true BE873765A (en) 1979-07-30

Family

ID=9204036

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/193124A BE873765A (en) 1978-01-31 1979-01-29 ANTIPOLLUTANT BLEACHING PROCESS FOR PAPER PULP

Country Status (9)

Country Link
JP (1) JPS54116404A (en)
BE (1) BE873765A (en)
BR (1) BR7900561A (en)
DE (1) DE2903014A1 (en)
FI (1) FI790318A (en)
FR (1) FR2416297A1 (en)
OA (1) OA06169A (en)
SE (1) SE7900793L (en)
ZA (1) ZA79388B (en)

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 (en) * 1990-01-31 1991-08-01 Eka Nobel Ab PROCEDURES FOR BLACKING OF LIGNOCELLULOSALLY 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 (en) * 1975-08-30 1986-01-16 Degussa Ag, 6000 Frankfurt Bleaching of cellulose with considerably reduced use of chlorine

Also Published As

Publication number Publication date
BR7900561A (en) 1979-08-28
FR2416297B1 (en) 1983-01-07
FI790318A (en) 1979-08-01
FR2416297A1 (en) 1979-08-31
OA06169A (en) 1981-06-30
SE7900793L (en) 1979-08-01
ZA79388B (en) 1980-02-27
DE2903014A1 (en) 1979-08-02
JPS54116404A (en) 1979-09-10

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: GROUPEMENT EUROPEEN DE LA CELLULOSE

Effective date: 19930131