ATE440803T1 - Verfahren zur herstellung von natriumdithionit zum bleichen von mechanischer pulpe - Google Patents
Verfahren zur herstellung von natriumdithionit zum bleichen von mechanischer pulpeInfo
- 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
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20030928A FI20030928A (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) | FI20030928A (de) |
Families Citing this family (7)
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 |
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 |
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 |
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)
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 |
-
2003
- 2003-06-19 FI FI20030928A patent/FI20030928A/fi not_active Application Discontinuation
-
2004
- 2004-06-17 AT AT04397013T patent/ATE440803T1/de not_active IP Right Cessation
- 2004-06-17 DE DE602004022757T patent/DE602004022757D1/de not_active Expired - Lifetime
- 2004-06-17 ES ES04397013T patent/ES2332313T3/es not_active Expired - Lifetime
- 2004-06-17 EP EP04397013A patent/EP1524241B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FI20030928A0 (fi) | 2003-06-19 |
EP1524241B1 (de) | 2009-08-26 |
ES2332313T3 (es) | 2010-02-02 |
DE602004022757D1 (de) | 2009-10-08 |
EP1524241A1 (de) | 2005-04-20 |
FI20030928A (fi) | 2004-12-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |