DE356103C - Process for the separation of sodium bisulphate in solid form from solutions - Google Patents
Process for the separation of sodium bisulphate in solid form from solutionsInfo
- Publication number
- DE356103C DE356103C DES52151D DES0052151D DE356103C DE 356103 C DE356103 C DE 356103C DE S52151 D DES52151 D DE S52151D DE S0052151 D DES0052151 D DE S0052151D DE 356103 C DE356103 C DE 356103C
- Authority
- DE
- Germany
- Prior art keywords
- solutions
- solid form
- separation
- sodium bisulphate
- sodium
- 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
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 title claims description 7
- 239000007787 solid Substances 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 3
- 238000000926 separation method Methods 0.000 title description 2
- 229910000342 sodium bisulfate Inorganic materials 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 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
- C01D5/02—Preparation of sulfates from alkali metal salts and sulfuric acid or bisulfates; Preparation of bisulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Abscheidung von Natriumbisulfat in fester Form aus Lösungen. Bei manchen Fabrikationszweigen, besonders bei der Herstellung von Kunstseide und Stapelfaser, fallen große Mengen Lösungen von Natriumbisulfat ab. Das Verbringen dieses Salzes in fester Form zwecks weiterer Verwendung stößt insofern auf Schwierigkeiten, als die Gefäße beim Eindampfen sehr stark angegriffen und bald unbrauchbar werden. Es hat sich nun ergeben, daß man diesen 'belstand dadurch vermeiden kann, daß man der Lösung von Natriumbisulfat konzentrierte Schwefelsäure zusetzt, wodurch das Salz zur Fällung gelangt. 50 Prozent Schwefelsäure vermag z. B. bei gewöhnlicher Temperatur nur mehr eine Menge zu lösen, welche 3 bis 4 Prozent Natriumsulfat entspricht. Die überstehende Säure kann entweder als solche verwendet werden, oder sie kann durch Eindampfen auf höhere Konzentration gebracht und dann zum Fällen neuer Mengen von Natriumbisulfat verwendet werden. Da sie nur noch geringe Mengen Natriumbisulfat enthält, findet ein Angriff der Gefäße beizt Eindampfen nicht mehr statt.Process for the separation of sodium bisulphate in solid form from solutions. In some branches of manufacture, especially in the manufacture of rayon and staple fiber, large amounts of sodium bisulfate solutions are wasted. Bringing this salt in solid form for the purpose of further use encounters difficulties insofar as the vessels are very severely attacked during evaporation and soon become unusable. It has now been found that this can be avoided by adding concentrated sulfuric acid to the solution of sodium bisulfate, which causes the salt to precipitate. 50 percent sulfuric acid can z. B. to dissolve at normal temperature only an amount which corresponds to 3 to 4 percent sodium sulfate. The supernatant acid can either be used as such or it can be brought to a higher concentration by evaporation and then used to precipitate new amounts of sodium bisulfate. Since it only contains small amounts of sodium bisulphate, the vessels are no longer attacked by evaporation.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES52151D DE356103C (en) | 1920-02-03 | 1920-02-03 | Process for the separation of sodium bisulphate in solid form from solutions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES52151D DE356103C (en) | 1920-02-03 | 1920-02-03 | Process for the separation of sodium bisulphate in solid form from solutions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE356103C true DE356103C (en) | 1922-07-17 |
Family
ID=7488590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES52151D Expired DE356103C (en) | 1920-02-03 | 1920-02-03 | Process for the separation of sodium bisulphate in solid form from solutions |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE356103C (en) |
-
1920
- 1920-02-03 DE DES52151D patent/DE356103C/en not_active Expired
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