DE405923C - Process for the production of anhydrous sodium sulfate from its hydrous crystals or solutions - Google Patents
Process for the production of anhydrous sodium sulfate from its hydrous crystals or solutionsInfo
- Publication number
- DE405923C DE405923C DER55518D DER0055518D DE405923C DE 405923 C DE405923 C DE 405923C DE R55518 D DER55518 D DE R55518D DE R0055518 D DER0055518 D DE R0055518D DE 405923 C DE405923 C DE 405923C
- Authority
- DE
- Germany
- Prior art keywords
- sodium sulfate
- solutions
- production
- anhydrous sodium
- hydrous crystals
- 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
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung von wasserfreiem Natriumsulfat aus seinen wasserhaltigen Kristallen oder Lösungen. Aus der deutschen Patentschrift 331489 ist Bekannt geworden, Natriumsulfat aus seinen I_ösun:gen oder kristallwasserhaltigen Verbinclungen durch Ammoniak oberhalb 33° C in wasserfreiem Zustande abzuscheiden. Desgleichen ist aus der deutschen Patentschrift 1842 bekannt, daß man aus kristallisiertem Glaubersalz das wasserfreie Natriumsulfat dadurch gewinnen kann, daß man das kristallisierte Salz in seinem Kristallwasser schmilzt und in die Schmelze festes Chlornatrium einirägt. In keinem Falle ist jedoch die Abscheidung des Natriumsulfates quantitativ. '-\'Ian erhält in dem einen Falle eine Lösung, die außer Ammoniak noch ro bis 15 Prozent von dein angewandten Natriumsulfat enthält, im anderen Falle eine solche, die außer etwa 25og Kochsalz im Liter noch 8o bis 9o g Natriumsulfat enthält.Process for the preparation of anhydrous sodium sulfate from its hydrous crystals or solutions. From the German patent specification 331489 it has become known to separate sodium sulfate from its I_ösun: gene or compounds containing water of crystallization by means of ammonia above 33 ° C in an anhydrous state. It is also known from German Patent 1842 that the anhydrous sodium sulfate can be obtained from crystallized Glauber's salt by melting the crystallized salt in its crystal water and introducing solid sodium chloride into the melt. In no case, however, is the deposition of sodium sulphate quantitative. In one case, Ian receives a solution which, in addition to ammonia, contains about 15 to 15 percent of the sodium sulphate used, in the other case one which contains 80 to 90 g of sodium sulphate in addition to about 25 g of table salt per liter.
Es wurde nun gefunden, daß man das Natriumsulfat praktisch vollkommen in Form des wasserfreien Salzes auch bei Temperaturen unterhalb 33' C aus seinen Lösungen oder kristallwasserhaltigen Verbindungen zur Abscheidung bringen kann, wenn man die Abscheid.ung desselben in Gegenwart von Chlornatrium und Ammoniak vornimmt. -Man erhält auf diese Weise -luiterlaugen, die nur noch ganz unbedeutende Mengen Sulfat neben Chlornatrium und Ammoniak enthalten, so (laß man sie sehr gut nach Zusatz der entsprechenden Mene Chlornatrium als am-Z-, nioniakalisclie Sole in der Aminonialcso(lafabrikation verwenden kann. Ausführungsbeispiel.It has now been found that it is possible to bring the sodium sulfate practically completely in the form of the anhydrous salt even at temperatures below 33 'C from its solutions, or water of crystallization-containing compounds to deposit when the same the Abscheid.ung in the presence of sodium chloride and ammonia makes. In this way one obtains luiter liquors which contain only very insignificant amounts of sulphate in addition to sodium chloride and ammonia, so (after adding the appropriate salts, they can be used very well as ammonium, ionic, ionic brine in the manufacture of amino acids Embodiment.
Man trägt in 25o kg kristallisiertes Glau, liersalz, welches man in seinem Kristallwasser geschmolzen hat, 4.5 kg Kochsalz ein und leitet darauf Ammoniak ein, wobei man durch Kühlung dafür Sorge trägt, daß die gewöhnliche Temperatur nicht wesentlich überschritten wird. Nachdem etwa ;8 kg Ammoniak aufgenommen sind, trennt man das ausgeschiedene Salz in bekannter Weise von der Mutterlauge. Diese enthält 171 '-Kochsalz, 258 g Aniinoniak und nur o,82 g Natriumsulfat un Liter, @d. 1i. (las angewandte NTatriumsulfat ist nahezu quantitativ, nämlich zu 99,85 Prozent, abgeschieden worden. Mischt man roo Liter dieser Mutterlauge mit 2,16 Liter einer ge- sättigten Sole, so erhält man eine amnioniakalische Sole mit rund 8o g NH..und 270 g NaCl im Liter.One puts in 250 kg of crystallized glacial salt, which has been melted in its crystal water, 4.5 kg of table salt and then passes in ammonia, whereby one takes care by cooling that the usual temperature is not significantly exceeded. After about; 8 kg of ammonia have been absorbed, the precipitated salt is separated from the mother liquor in a known manner. This contains 171 'table salt, 258 g of aniinonia and only 0.82 g of sodium sulfate per liter, @d. 1i. (las Applied NTatriumsulfat is almost quantitatively been namely 99.85 percent, deposited. If you mix roo liters of this mother liquor with 2.16 liters of an overall saturated brine, the result is a amnioniakalische Sole with about 8o g NH..und 270 g NaCl per liter.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER55518D DE405923C (en) | 1922-03-29 | 1922-03-29 | Process for the production of anhydrous sodium sulfate from its hydrous crystals or solutions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER55518D DE405923C (en) | 1922-03-29 | 1922-03-29 | Process for the production of anhydrous sodium sulfate from its hydrous crystals or solutions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE405923C true DE405923C (en) | 1924-11-08 |
Family
ID=7409992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DER55518D Expired DE405923C (en) | 1922-03-29 | 1922-03-29 | Process for the production of anhydrous sodium sulfate from its hydrous crystals or solutions |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE405923C (en) |
-
1922
- 1922-03-29 DE DER55518D patent/DE405923C/en not_active Expired
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