SE9603972D0 - Förfarande för framställning av aska bestående huvudsakligen av natriumsulfat från en sodapanna - Google Patents
Förfarande för framställning av aska bestående huvudsakligen av natriumsulfat från en sodapannaInfo
- Publication number
- SE9603972D0 SE9603972D0 SE9603972A SE9603972A SE9603972D0 SE 9603972 D0 SE9603972 D0 SE 9603972D0 SE 9603972 A SE9603972 A SE 9603972A SE 9603972 A SE9603972 A SE 9603972A SE 9603972 D0 SE9603972 D0 SE 9603972D0
- Authority
- SE
- Sweden
- Prior art keywords
- evaporation
- sodium sulphate
- pct
- leaching
- water
- Prior art date
Links
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 title abstract 6
- 229910052938 sodium sulfate Inorganic materials 0.000 title abstract 3
- 235000011152 sodium sulphate Nutrition 0.000 title abstract 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 title 1
- 238000002386 leaching Methods 0.000 abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 4
- 238000011084 recovery Methods 0.000 abstract 3
- 239000007864 aqueous solution Substances 0.000 abstract 2
- 238000002425 crystallisation Methods 0.000 abstract 2
- 238000009835 boiling Methods 0.000 abstract 1
- 150000001805 chlorine compounds Chemical class 0.000 abstract 1
- 239000000356 contaminant Substances 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 239000011549 crystallization solution Substances 0.000 abstract 1
- 159000000001 potassium salts Chemical class 0.000 abstract 1
- RSIJVJUOQBWMIM-UHFFFAOYSA-L sodium sulfate decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=O RSIJVJUOQBWMIM-UHFFFAOYSA-L 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
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
- D21C11/063—Treatment of gas streams comprising solid matter, e.g. the ashes resulting from the combustion of black liquor
- D21C11/066—Separation of solid compounds from these gases; further treatment of recovered products
Landscapes
- Paper (AREA)
- Processing Of Solid Wastes (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9603972A SE9603972D0 (sv) | 1996-10-31 | 1996-10-31 | Förfarande för framställning av aska bestående huvudsakligen av natriumsulfat från en sodapanna |
| EP97911542A EP0935694A1 (en) | 1996-10-31 | 1997-10-21 | Process for purifying ash which principally consists of sodium sulphate from a recovery boiler |
| US09/284,855 US6162408A (en) | 1996-10-31 | 1997-10-21 | Process for purifying ash which principally consists of sodium sulphate from a recovery boiler |
| PCT/SE1997/001756 WO1998019003A1 (en) | 1996-10-31 | 1997-10-21 | Process for purifying ash which principally consists of sodium sulphate from a recovery boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9603972A SE9603972D0 (sv) | 1996-10-31 | 1996-10-31 | Förfarande för framställning av aska bestående huvudsakligen av natriumsulfat från en sodapanna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE9603972D0 true SE9603972D0 (sv) | 1996-10-31 |
Family
ID=20404432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE9603972A SE9603972D0 (sv) | 1996-10-31 | 1996-10-31 | Förfarande för framställning av aska bestående huvudsakligen av natriumsulfat från en sodapanna |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6162408A (xx) |
| EP (1) | EP0935694A1 (xx) |
| SE (1) | SE9603972D0 (xx) |
| WO (1) | WO1998019003A1 (xx) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE517587C2 (sv) * | 2001-08-14 | 2002-06-25 | Kvaerner Pulping Tech | Förfarande för lakning av elfilteraska från en sodapanna |
| SE530373C3 (sv) * | 2006-11-22 | 2008-06-10 | Metso Power Ab | Anordning och förfarande för urlakning av klorid och kalium ur elfilteraska |
| US8246779B2 (en) * | 2009-09-24 | 2012-08-21 | Noram Engineering And Constructors Ltd. | Maintenance of sulfur concentration in Kraft pulp processes |
| FR2951383B1 (fr) * | 2009-10-20 | 2012-09-21 | Solvay | Procede pour la valorisation conjointe de sels solubles contenus dans un residu d'un procede industriel |
| CN201770493U (zh) * | 2010-05-10 | 2011-03-23 | 许达人 | 基于酸浴闪蒸流程的结晶元明粉装置 |
| SE1451569A1 (sv) * | 2014-12-17 | 2015-12-01 | Aprotech Engineering Ab | Process for production of a fertilizer comprising potassium sulfate |
| FI127615B (en) * | 2015-11-27 | 2018-10-31 | Andritz Oy | A method for treating recovery boiler ash |
| FI129103B (fi) | 2017-04-28 | 2021-07-15 | Andritz Oy | Menetelmä soodakattilan lentotuhkan käsittelemiseksi |
| WO2025178544A1 (en) | 2024-02-19 | 2025-08-28 | Valmet Ab | Sodium recovery process and purge purification |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1059271A (en) * | 1974-02-21 | 1979-07-31 | Erco Envirotech Ltd. | Removal of sodium chloride from pulp mill systems |
| JPS5673620A (en) * | 1979-11-19 | 1981-06-18 | Tokuyama Soda Co Ltd | Separation of sodium sulfate and sodium chloride from mixed solution of sodium chloride and sodium sulfate |
| US5352332A (en) * | 1991-01-28 | 1994-10-04 | Maples Gerald E | Process for recycling bleach plant filtrate |
| US5938892A (en) * | 1991-01-28 | 1999-08-17 | Champion International Corporation | Process for recycling bleach plant filtrate |
| SE504374C2 (sv) * | 1994-10-20 | 1997-01-20 | Kvaerner Pulping Tech | Lakning av elfilteraska |
| SE9502583D0 (sv) * | 1995-07-12 | 1995-07-12 | Eka Chemicals Ab | Leaching process |
| US5980717A (en) * | 1997-01-03 | 1999-11-09 | Eka Chemical Ab | Recovery process in a pulp mill |
-
1996
- 1996-10-31 SE SE9603972A patent/SE9603972D0/xx unknown
-
1997
- 1997-10-21 EP EP97911542A patent/EP0935694A1/en not_active Withdrawn
- 1997-10-21 US US09/284,855 patent/US6162408A/en not_active Expired - Fee Related
- 1997-10-21 WO PCT/SE1997/001756 patent/WO1998019003A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US6162408A (en) | 2000-12-19 |
| WO1998019003A1 (en) | 1998-05-07 |
| EP0935694A1 (en) | 1999-08-18 |
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