ATE521571T1 - Verfahren zur herstellung von dithionit und seine verwendung - Google Patents

Verfahren zur herstellung von dithionit und seine verwendung

Info

Publication number
ATE521571T1
ATE521571T1 AT08761628T AT08761628T ATE521571T1 AT E521571 T1 ATE521571 T1 AT E521571T1 AT 08761628 T AT08761628 T AT 08761628T AT 08761628 T AT08761628 T AT 08761628T AT E521571 T1 ATE521571 T1 AT E521571T1
Authority
AT
Austria
Prior art keywords
dithionite
producing
solution
rise
prevented
Prior art date
Application number
AT08761628T
Other languages
English (en)
Inventor
Risto Rahkola
Original Assignee
Kemira Oyj
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 Kemira Oyj filed Critical Kemira Oyj
Application granted granted Critical
Publication of ATE521571T1 publication Critical patent/ATE521571T1/de

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/64—Thiosulfates; Dithionites; Polythionates
    • C01B17/66—Dithionites or hydrosulfites (S2O42-)
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D7/00—Carbonates of sodium, potassium or alkali metals in general
    • C01D7/07—Preparation from the hydroxides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Saccharide Compounds (AREA)
  • Compounds Of Unknown Constitution (AREA)
AT08761628T 2007-05-04 2008-04-25 Verfahren zur herstellung von dithionit und seine verwendung ATE521571T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20075317A FI121114B (fi) 2007-05-04 2007-05-04 Ditioniitin valmistusmenetelmä
PCT/FI2008/050225 WO2008135631A1 (en) 2007-05-04 2008-04-25 Method for preparing dithionite

Publications (1)

Publication Number Publication Date
ATE521571T1 true ATE521571T1 (de) 2011-09-15

Family

ID=38069485

Family Applications (1)

Application Number Title Priority Date Filing Date
AT08761628T ATE521571T1 (de) 2007-05-04 2008-04-25 Verfahren zur herstellung von dithionit und seine verwendung

Country Status (7)

Country Link
US (1) US7993622B2 (de)
EP (1) EP2150489B1 (de)
AT (1) ATE521571T1 (de)
CA (1) CA2684688C (de)
CL (1) CL2008001252A1 (de)
FI (1) FI121114B (de)
WO (1) WO2008135631A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI121114B (fi) 2007-05-04 2010-07-15 Kemira Oyj Ditioniitin valmistusmenetelmä
CN103485212B (zh) * 2013-09-04 2016-05-11 北京泛博化学股份有限公司 利用拔色剂拔色的方法
EP2924166A1 (de) * 2014-03-25 2015-09-30 Basf Se Verfahren zur Herstellung von gebleichtem Holzfaserstoff

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1472828A (en) * 1923-11-06 Apparatus fob making hydeosulphites
US791675A (en) * 1903-07-06 1905-06-06 Louis Descamps Process of making hydrosulfites.
EP0027369A1 (de) * 1979-10-12 1981-04-22 Thiokol Corporation Stabile Ausgangslösung zur Herstellung von Hydrosulfit und ihre Verwendung beim Bleichen von Holzschliff, beim Aufhellen von Kaolinton und bei der Reduktion von Küpenfarbstoffen in ihre Leuko-Form
US4788041A (en) 1986-12-22 1988-11-29 Morton Thiokol, Inc. Apparatus for the production of sodium hydrosulfite
SE457647B (sv) 1987-06-24 1989-01-16 Eka Nobel Ab Saett vid blekning av material med ditionitloesning
US5094833A (en) * 1989-01-05 1992-03-10 Morton International, Inc. High yield sodium hydrosulfite generation
US5098679A (en) 1990-12-21 1992-03-24 Olin Corporation Purification of alkali metal hydrosulfite solutions
SE468644B (sv) * 1991-05-24 1993-02-22 Sunds Defibrator Ind Ab Framstaellning av kemitermomekanisk massa samt impregneringsloesning innehaallande borhydrid och sulfit
GB9212926D0 (en) 1992-06-18 1992-07-29 Morton Int Inc Method of bleaching paper pulp
AU4271596A (en) * 1995-12-19 1997-07-14 Kvaerner Hymac Inc. Process for treating refiner pulp
FI102911B1 (fi) 1997-06-13 1999-03-15 Aga Ab Menetelmä massasuspension pH:n stabiloimiseksi ja paperin tuottamiseksi stabiloidusta massasta
DE60301446T2 (de) 2002-06-28 2006-06-14 Rohm & Haas Verfahren zur Aufhellung von Pulpe mit Hydrosulfitlösung
DE60326113D1 (de) * 2002-11-05 2009-03-26 Rohm & Haas Verfahren zum Bleichen von mechanischer Pulpe
FI20030928A (fi) 2003-06-19 2004-12-20 Kvaerner Power Oy Menetelmä mekaanisen massan valkaisussa käytettävän natriumditioniitin valmistamiseksi
FI121114B (fi) 2007-05-04 2010-07-15 Kemira Oyj Ditioniitin valmistusmenetelmä

Also Published As

Publication number Publication date
FI20075317A (fi) 2008-11-05
EP2150489B1 (de) 2011-08-24
EP2150489A1 (de) 2010-02-10
EP2150489A4 (de) 2010-06-30
US7993622B2 (en) 2011-08-09
CL2008001252A1 (es) 2008-11-14
WO2008135631A1 (en) 2008-11-13
FI121114B (fi) 2010-07-15
FI20075317A0 (fi) 2007-05-04
US20100181531A1 (en) 2010-07-22
CA2684688A1 (en) 2008-11-13
CA2684688C (en) 2015-03-31

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Legal Events

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