FI900236A0 - FOERFARANDE FOER BLEKNING AV FIBERMASSOR FOER FRAMSTAELLNING AV PAPPER. - Google Patents

FOERFARANDE FOER BLEKNING AV FIBERMASSOR FOER FRAMSTAELLNING AV PAPPER.

Info

Publication number
FI900236A0
FI900236A0 FI900236A FI900236A FI900236A0 FI 900236 A0 FI900236 A0 FI 900236A0 FI 900236 A FI900236 A FI 900236A FI 900236 A FI900236 A FI 900236A FI 900236 A0 FI900236 A0 FI 900236A0
Authority
FI
Finland
Prior art keywords
foer
fibermassor
papper
blekning
framstaellning
Prior art date
Application number
FI900236A
Other languages
Finnish (fi)
Inventor
Wilfried Eul
Hans Ulrich Suess
Original Assignee
Degussa
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 Degussa filed Critical Degussa
Publication of FI900236A0 publication Critical patent/FI900236A0/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
    • D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
    • 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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling
FI900236A 1989-01-27 1990-01-16 FOERFARANDE FOER BLEKNING AV FIBERMASSOR FOER FRAMSTAELLNING AV PAPPER. FI900236A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19893902423 DE3902423A1 (en) 1989-01-27 1989-01-27 METHOD FOR BLEACHING FIBER FABRICS FOR PAPER PRODUCTION

Publications (1)

Publication Number Publication Date
FI900236A0 true FI900236A0 (en) 1990-01-16

Family

ID=6372923

Family Applications (1)

Application Number Title Priority Date Filing Date
FI900236A FI900236A0 (en) 1989-01-27 1990-01-16 FOERFARANDE FOER BLEKNING AV FIBERMASSOR FOER FRAMSTAELLNING AV PAPPER.

Country Status (7)

Country Link
EP (1) EP0379858A3 (en)
JP (1) JPH02234991A (en)
AU (1) AU4687789A (en)
CA (1) CA2008678A1 (en)
DE (1) DE3902423A1 (en)
FI (1) FI900236A0 (en)
ZA (1) ZA90260B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5958184A (en) * 1992-06-10 1999-09-28 Mitsubishi Gas Chemical Company Inc. Process for producing thiourea dioxide
GB9214041D0 (en) * 1992-07-02 1992-08-12 Morton Int Inc Process for de-inking recycled paper pulp
US6153300A (en) * 1994-04-18 2000-11-28 Ahlstrom Machinery, Inc. Bleaching cellulose pulp having cleanliness which varies significantly over time using at least two different bleaching stages and bleaching chemicals

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1404315A (en) * 1971-09-15 1975-08-28 Albright & Wilson Production of bleached high yield pulp
DE3309956C1 (en) * 1983-03-19 1984-07-12 Degussa Ag, 6000 Frankfurt Process for bleaching paper raw materials

Also Published As

Publication number Publication date
EP0379858A3 (en) 1991-01-16
ZA90260B (en) 1990-10-31
EP0379858A2 (en) 1990-08-01
JPH02234991A (en) 1990-09-18
AU4687789A (en) 1990-08-02
CA2008678A1 (en) 1990-07-27
DE3902423A1 (en) 1990-08-02

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Legal Events

Date Code Title Description
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Owner name: DEGUSSA AKTIENGESELLSCHAFT