GB814415A - Process for the production of anhydrous sodium sulphate - Google Patents
Process for the production of anhydrous sodium sulphateInfo
- Publication number
- GB814415A GB814415A GB2995556A GB2995556A GB814415A GB 814415 A GB814415 A GB 814415A GB 2995556 A GB2995556 A GB 2995556A GB 2995556 A GB2995556 A GB 2995556A GB 814415 A GB814415 A GB 814415A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sodium sulphate
- crystals
- drier
- anhydrous sodium
- anhydrous
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 title abstract 20
- 229910052938 sodium sulfate Inorganic materials 0.000 title abstract 10
- 235000011152 sodium sulphate Nutrition 0.000 title abstract 10
- 239000000243 solution Substances 0.000 abstract 3
- 239000007864 aqueous solution Substances 0.000 abstract 2
- HFCSXCKLARAMIQ-UHFFFAOYSA-L disodium;sulfate;hydrate Chemical compound O.[Na+].[Na+].[O-]S([O-])(=O)=O HFCSXCKLARAMIQ-UHFFFAOYSA-L 0.000 abstract 2
- 239000010446 mirabilite Substances 0.000 abstract 2
- 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 2
- 229920002456 HOTAIR Polymers 0.000 abstract 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 abstract 1
- 150000004677 hydrates Chemical class 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000009877 rendering Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/18—Dehydration
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
<PICT:0814415/III/1> Anhydrous sodium sulphate is produced by feeding sodium sulphate in association with water, e.g. crystalline hydrates of sodium sulphate, mixtures of crystals of sodium sulphate and solutions thereof, or aqueous solutions containing sodium sulphate into a bed of anhydrous sodium sulphate maintained in a fluidized state by passing a stream of heated gas therethrough. In operation, sodium sulphate hydrate crystals, e.g. Glauber's salt are heated to above their transition temperature 32.4 DEG C. in tank 1 by steam coil 2 to produce a slurry of crystals which is stirred by 3 and is continuously circulated through a cooler 4 and returned to tank 1 by pump 5. Cooler 4 reduces the temperature of the solution, thereby rendering it less saturated with respect to hydrated sodium sulphate and thus preventing the deposition of anhydrous crystals in the pump 5 and surrounding pipes. Bleed-off pipe 7 delivers the solution continuously to the top of a vertical, cylindrical, mild steel drier 8 in the form of a spray which descends 8 against a stream of hot air or super-heated steam. which enters at 9 passes through a stainless steel distributer plate 10 and exits at 11, to form a fluidized bed of anhydrous sodium sulphate at the bottom of drier 8 which is removed by pipe 12 provided at its lower end with a take-off 13. Unheated air from 14 maintains fluidized conditions in 13. Alternative embodiments of the invention include the continuous addition of sodium sulphate hydrate crystals, e.g. Glauber's salt direct to the drier 8 by means of a hopper arranged above it, or the direct spraying of an aqueous solution of sodium sulphate into the top of the drier without any of the pretreatment described above. Specifications 458,572 and 668,601 are referred to.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB814415A true GB814415A (en) | 1959-06-03 |
Family
ID=1741860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2995556A Expired GB814415A (en) | 1956-10-02 | Process for the production of anhydrous sodium sulphate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB814415A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539164A (en) * | 2013-11-01 | 2014-01-29 | 四川省银河化学股份有限公司 | Method for refining sodium sulfate powder from chromium-containing mirabilite |
-
1956
- 1956-10-02 GB GB2995556A patent/GB814415A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539164A (en) * | 2013-11-01 | 2014-01-29 | 四川省银河化学股份有限公司 | Method for refining sodium sulfate powder from chromium-containing mirabilite |
| CN103539164B (en) * | 2013-11-01 | 2016-05-25 | 四川省银河化学股份有限公司 | A kind of by the method containing the refining glauber salt of chromium saltcake |
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