SE504374C2 - Lakning av elfilteraska - Google Patents
Lakning av elfilteraskaInfo
- Publication number
- SE504374C2 SE504374C2 SE9403598A SE9403598A SE504374C2 SE 504374 C2 SE504374 C2 SE 504374C2 SE 9403598 A SE9403598 A SE 9403598A SE 9403598 A SE9403598 A SE 9403598A SE 504374 C2 SE504374 C2 SE 504374C2
- Authority
- SE
- Sweden
- Prior art keywords
- leaching
- filtrate
- washing
- filter
- filter cake
- Prior art date
Links
- 238000002386 leaching Methods 0.000 claims abstract description 30
- 239000000706 filtrate Substances 0.000 claims abstract description 23
- 239000012065 filter cake Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 14
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 13
- 239000011591 potassium Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 2
- 159000000001 potassium salts Chemical class 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- 150000003841 chloride salts Chemical class 0.000 claims 1
- 150000001805 chlorine compounds Chemical class 0.000 abstract description 2
- 239000012716 precipitator Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 9
- 238000012432 intermediate storage Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- 229910021653 sulphate ion Inorganic materials 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000012047 saturated solution Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
- B01D29/78—Handling the filter cake in the filter for purposes other than for regenerating for washing
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing Of Solid Wastes (AREA)
- Filtration Of Liquid (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9403598A SE504374C2 (sv) | 1994-10-20 | 1994-10-20 | Lakning av elfilteraska |
| PCT/SE1995/001043 WO1996012847A1 (en) | 1994-10-20 | 1995-09-15 | Leaching of precipitator ash |
| AU38185/95A AU3818595A (en) | 1994-10-20 | 1995-09-15 | Leaching of precipitator ash |
| US08/817,193 US5911854A (en) | 1994-10-20 | 1995-09-15 | Method of purifying electric precipitator ash using a pressure filter |
| FI971654A FI971654A0 (fi) | 1994-10-20 | 1997-04-18 | Pölynerottimen tuhkan uuttaminen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9403598A SE504374C2 (sv) | 1994-10-20 | 1994-10-20 | Lakning av elfilteraska |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE9403598D0 SE9403598D0 (sv) | 1994-10-20 |
| SE9403598L SE9403598L (sv) | 1996-04-21 |
| SE504374C2 true SE504374C2 (sv) | 1997-01-20 |
Family
ID=20395690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE9403598A SE504374C2 (sv) | 1994-10-20 | 1994-10-20 | Lakning av elfilteraska |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5911854A (fi) |
| AU (1) | AU3818595A (fi) |
| FI (1) | FI971654A0 (fi) |
| SE (1) | SE504374C2 (fi) |
| WO (1) | WO1996012847A1 (fi) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9603972D0 (sv) * | 1996-10-31 | 1996-10-31 | Kvaerner Pulping Tech | Förfarande för framställning av aska bestående huvudsakligen av natriumsulfat från en sodapanna |
| EP2427598B1 (en) * | 2009-05-06 | 2016-01-06 | Valmet Aktiebolag | Process for improved leaching of electrostatic precipitator ash from a recovery boiler |
| US8246779B2 (en) * | 2009-09-24 | 2012-08-21 | Noram Engineering And Constructors Ltd. | Maintenance of sulfur concentration in Kraft pulp processes |
| EP3228743A1 (en) | 2016-04-05 | 2017-10-11 | L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Selective removal of k+ and cl- from recovery boiler electrostatic precipitator ashes in a kraft process |
| FR3072396B1 (fr) | 2017-10-12 | 2019-11-08 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Methode de traitement des cendres d'electrofiltres de la chaudiere de recuperation dans un procede kraft |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3833462A (en) * | 1971-03-15 | 1974-09-03 | Mac Millan Bloedel Ltd | Process of removing sodium chloride from kraft pulping process chemical recovery systems |
| SE463771C (sv) * | 1985-05-02 | 1999-07-12 | Caustec Ab | Anordning och förfarande för separering av vitlut, mesa och eventuellt slam varvid användes ett roterande skivfilter |
| US5352332A (en) * | 1991-01-28 | 1994-10-04 | Maples Gerald E | Process for recycling bleach plant filtrate |
-
1994
- 1994-10-20 SE SE9403598A patent/SE504374C2/sv not_active IP Right Cessation
-
1995
- 1995-09-15 AU AU38185/95A patent/AU3818595A/en not_active Abandoned
- 1995-09-15 WO PCT/SE1995/001043 patent/WO1996012847A1/en active Application Filing
- 1995-09-15 US US08/817,193 patent/US5911854A/en not_active Expired - Fee Related
-
1997
- 1997-04-18 FI FI971654A patent/FI971654A0/fi not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| AU3818595A (en) | 1996-05-15 |
| US5911854A (en) | 1999-06-15 |
| SE9403598D0 (sv) | 1994-10-20 |
| WO1996012847A1 (en) | 1996-05-02 |
| SE9403598L (sv) | 1996-04-21 |
| FI971654A (fi) | 1997-04-18 |
| FI971654A0 (fi) | 1997-04-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |