ATE159063T1 - Verhinderung der schwefeldioxyderzeugung in refinerbleiche - Google Patents

Verhinderung der schwefeldioxyderzeugung in refinerbleiche

Info

Publication number
ATE159063T1
ATE159063T1 AT93310028T AT93310028T ATE159063T1 AT E159063 T1 ATE159063 T1 AT E159063T1 AT 93310028 T AT93310028 T AT 93310028T AT 93310028 T AT93310028 T AT 93310028T AT E159063 T1 ATE159063 T1 AT E159063T1
Authority
AT
Austria
Prior art keywords
refiner
dioxyde
bleach
generation
preventing sulfur
Prior art date
Application number
AT93310028T
Other languages
English (en)
Inventor
Jeffrey Nye
Martin G Fairbank
Original Assignee
Hoechst Celanese Corp
Abitibi Price Inc
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 Hoechst Celanese Corp, Abitibi Price Inc filed Critical Hoechst Celanese Corp
Application granted granted Critical
Publication of ATE159063T1 publication Critical patent/ATE159063T1/de

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
    • D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
    • D21C9/1089—Bleaching ; Apparatus therefor with reducing compounds with dithionites
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents
AT93310028T 1992-12-14 1993-12-13 Verhinderung der schwefeldioxyderzeugung in refinerbleiche ATE159063T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US99034892A 1992-12-14 1992-12-14
US5512193A 1993-04-30 1993-04-30

Publications (1)

Publication Number Publication Date
ATE159063T1 true ATE159063T1 (de) 1997-10-15

Family

ID=26733862

Family Applications (1)

Application Number Title Priority Date Filing Date
AT93310028T ATE159063T1 (de) 1992-12-14 1993-12-13 Verhinderung der schwefeldioxyderzeugung in refinerbleiche

Country Status (10)

Country Link
US (1) US5607547A (de)
EP (1) EP0604088B1 (de)
JP (1) JPH073684A (de)
AT (1) ATE159063T1 (de)
BR (1) BR9305032A (de)
CA (1) CA2111261A1 (de)
DE (1) DE69314446T2 (de)
DK (1) DK0604088T3 (de)
FI (1) FI935583A (de)
NO (1) NO934597L (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60301446T2 (de) * 2002-06-28 2006-06-14 Rohm & Haas Verfahren zur Aufhellung von Pulpe mit Hydrosulfitlösung
BRPI0810574B1 (pt) * 2007-04-24 2018-10-23 Basf Se processos para a produção de partículas de madeira branqueada, e para a produção de materiais baseados em madeira clara a branca
EP2924166A1 (de) * 2014-03-25 2015-09-30 Basf Se Verfahren zur Herstellung von gebleichtem Holzfaserstoff

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2883826A (en) * 1953-01-07 1959-04-28 Univ Minnesota Process for conditioning plant fibers for spinning
US3013931A (en) * 1957-02-01 1961-12-19 Hawaiian Dev Company Ltd Printing paper and process of making the same
SE303088B (de) * 1963-05-31 1968-08-12 Defibrator Ab
US3804944A (en) * 1970-10-02 1974-04-16 Virginia Chemicals Inc Sodium dithionite solution stablization
DE2107959A1 (de) * 1971-02-19 1972-08-31 Basf Ag Stabilisierte Natriumdithionitzubereitungen
US3985674A (en) * 1974-12-10 1976-10-12 Virginia Chemicals Inc. Stabilized sodium dithionite solutions
US4411737A (en) * 1979-12-13 1983-10-25 Owens-Illinois, Inc. Pulp treating process
US4534954A (en) * 1982-08-17 1985-08-13 Virginia Chemicals Inc. Sodium hydrosulfite slurries
DE3406322A1 (de) * 1984-02-22 1985-08-22 Basf Ag, 6700 Ludwigshafen Stabilisierte, wasser enthaltende, alkalisch eingestellte natriumdithionitzubereitungen
GB2215350B (en) * 1988-03-16 1992-05-20 Thiokol Morton Inc Process for bleaching mechanical wood pulp
DE4115575A1 (de) * 1991-05-13 1992-11-19 Brueggemann L Kg Bleichmittel

Also Published As

Publication number Publication date
DE69314446D1 (de) 1997-11-13
JPH073684A (ja) 1995-01-06
FI935583A0 (fi) 1993-12-13
BR9305032A (pt) 1994-06-21
NO934597L (no) 1994-06-15
DK0604088T3 (da) 1997-10-27
US5607547A (en) 1997-03-04
NO934597D0 (no) 1993-12-14
FI935583A (fi) 1994-06-15
EP0604088B1 (de) 1997-10-08
CA2111261A1 (en) 1994-06-15
EP0604088A1 (de) 1994-06-29
DE69314446T2 (de) 1998-03-19

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee