ATE440803T1 - Verfahren zur herstellung von natriumdithionit zum bleichen von mechanischer pulpe - Google Patents

Verfahren zur herstellung von natriumdithionit zum bleichen von mechanischer pulpe

Info

Publication number
ATE440803T1
ATE440803T1 AT04397013T AT04397013T ATE440803T1 AT E440803 T1 ATE440803 T1 AT E440803T1 AT 04397013 T AT04397013 T AT 04397013T AT 04397013 T AT04397013 T AT 04397013T AT E440803 T1 ATE440803 T1 AT E440803T1
Authority
AT
Austria
Prior art keywords
sodium dithionite
mechanical pulp
producing sodium
sodium
bleaching
Prior art date
Application number
AT04397013T
Other languages
English (en)
Inventor
Mikko Anttila
Risto Hamalainen
Original Assignee
Metso Power Oy
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 Metso Power Oy filed Critical Metso Power Oy
Application granted granted Critical
Publication of ATE440803T1 publication Critical patent/ATE440803T1/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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Treating Waste Gases (AREA)
AT04397013T 2003-06-19 2004-06-17 Verfahren zur herstellung von natriumdithionit zum bleichen von mechanischer pulpe ATE440803T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20030928A FI20030928A7 (fi) 2003-06-19 2003-06-19 Menetelmä mekaanisen massan valkaisussa käytettävän natriumditioniitin valmistamiseksi

Publications (1)

Publication Number Publication Date
ATE440803T1 true ATE440803T1 (de) 2009-09-15

Family

ID=8566283

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04397013T ATE440803T1 (de) 2003-06-19 2004-06-17 Verfahren zur herstellung von natriumdithionit zum bleichen von mechanischer pulpe

Country Status (5)

Country Link
EP (1) EP1524241B1 (de)
AT (1) ATE440803T1 (de)
DE (1) DE602004022757D1 (de)
ES (1) ES2332313T3 (de)
FI (1) FI20030928A7 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI121312B (fi) * 2005-10-18 2010-09-30 Metso Power Oy Menetelmä savukaasujen käsittelemiseksi
FI121114B (fi) 2007-05-04 2010-07-15 Kemira Oyj Ditioniitin valmistusmenetelmä
FI123022B (fi) 2007-09-03 2012-10-15 Andritz Oy Menetelmä sellutehtaan hajukaasujen käsittelyssä
CN102556980B (zh) * 2011-12-14 2014-03-12 烟台金海化工有限公司 一种保险粉合成方法
CN102530883B (zh) * 2011-12-14 2013-10-23 烟台市金河保险粉厂有限公司 一种保险粉合成方法
CN104190209A (zh) * 2014-08-08 2014-12-10 烟台金海化工有限公司 一种保险粉制备过程中产生尾气的处理方法
CN113174771A (zh) * 2021-04-29 2021-07-27 玖龙纸业（东莞）有限公司 一种涂布白板纸浆料的三元漂白方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680136A (en) * 1985-05-07 1987-07-14 Stora Kopparbergs Bergslags Ab Method for preparing compositions which can be used in the production of sodium dithionite; and the use of such compositions
DE3525377A1 (de) * 1985-07-16 1987-01-22 Gea Wiegand Gmbh Reinigung von so(pfeil abwaerts)2(pfeil abwaerts)-haltiger abluft
IN172015B (de) * 1986-01-03 1993-03-13 Thiokol Morton Inc
FI92726C (fi) * 1991-12-02 1994-12-27 Ahlstroem Oy Menetelmä ja laite rikkidioksidin talteenottamiseksi sulfaattiselluloosatehtaan kemikaalikierrosta
FI95723C (fi) * 1992-11-10 1996-04-11 Lt Dynamics Oy Menetelmä suovan hapottamiseksi suurella yliannostuksella NaHSO3-liuosta

Also Published As

Publication number Publication date
DE602004022757D1 (de) 2009-10-08
EP1524241A1 (de) 2005-04-20
EP1524241B1 (de) 2009-08-26
FI20030928L (fi) 2004-12-20
ES2332313T3 (es) 2010-02-02
FI20030928A7 (fi) 2004-12-20
FI20030928A0 (fi) 2003-06-19

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Legal Events

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RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties