FI790318A - BLEKNINGSFOERFARANDE FOER PAPPERSMASSA - Google Patents

BLEKNINGSFOERFARANDE FOER PAPPERSMASSA

Info

Publication number
FI790318A
FI790318A FI790318A FI790318A FI790318A FI 790318 A FI790318 A FI 790318A FI 790318 A FI790318 A FI 790318A FI 790318 A FI790318 A FI 790318A FI 790318 A FI790318 A FI 790318A
Authority
FI
Finland
Prior art keywords
blekningsfoerfarande
pappersmassa
foer
foer pappersmassa
blekningsfoerfarande foer
Prior art date
Application number
FI790318A
Other languages
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 FI790318A publication Critical patent/FI790318A/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
FI790318A 1978-01-31 1979-01-31 BLEKNINGSFOERFARANDE FOER PAPPERSMASSA FI790318A (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
FI790318A true FI790318A (en) 1979-08-01

Family

ID=9204036

Family Applications (1)

Application Number Title Priority Date Filing Date
FI790318A FI790318A (en) 1978-01-31 1979-01-31 BLEKNINGSFOERFARANDE FOER PAPPERSMASSA

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
FR2416297A1 (en) 1979-08-31
OA06169A (en) 1981-06-30
BE873765A (en) 1979-07-30
DE2903014A1 (en) 1979-08-02
ZA79388B (en) 1980-02-27
BR7900561A (en) 1979-08-28
JPS54116404A (en) 1979-09-10
SE7900793L (en) 1979-08-01
FR2416297B1 (en) 1983-01-07

Similar Documents

Publication Publication Date Title
AT379079B (en) ACUPUNKTURGERAET
AT370950B (en) HOESCHENWINDEL
FI792971A (en) FAERGADE SAMMANKOPPLANDE FOERSLUTNINGSBAND
BE875475A (en) IMINOQUINAZOLINES
BE872071A (en) AFDICHTORGAAN
AT365922B (en) NETBED
BE876254A (en) OMSLUITINGSINRICHTING
DK222578A (en) SPUNNING
BE876344A (en) SNELKOPPELEND KOGELSCHARNIER
AT374352B (en) SPORTSHOE
BE876059A (en) AZOLOPYRIMIDINONES
FI783510A (en) SKIVCYLINDERLAOS
BE873461A (en) KLEERHANGER
FI793778A (en) INLOPPSLUFTRENAR- OCH DIMELIMINATORENHET FOER GASTURBINMOTORER
AR218561A1 (en) COPOLIESTER P-OXIBENZOILICO
BE877468A (en) HARVESTER-CHOPPER
ATA872778A (en) CLOCKBAND
BE875799A (en) N-ALKENYLMORANOLINES
ATA26879A (en) B-ETTBANK
AT368010B (en) ROLLSKIER
FI790318A (en) BLEKNINGSFOERFARANDE FOER PAPPERSMASSA
AT355471B (en) SCHIPRESSE
AR224881A1 (en) 2-HYDROXIFENILBENZOTIAZOLES
ATA562378A (en) HANDGRENADE
ATA510278A (en) GRIFFEL