AT76820B - Process for the production of solid bisulfites. - Google Patents

Process for the production of solid bisulfites.

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Publication number
AT76820B
AT76820B AT76820DA AT76820B AT 76820 B AT76820 B AT 76820B AT 76820D A AT76820D A AT 76820DA AT 76820 B AT76820 B AT 76820B
Authority
AT
Austria
Prior art keywords
bisulfites
solid
production
solution
sodium
Prior art date
Application number
Other languages
German (de)
Original Assignee
Bretislav Setlik
Fistag Fettindustrie Und Staer
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bretislav Setlik, Fistag Fettindustrie Und Staer filed Critical Bretislav Setlik
Application granted granted Critical
Publication of AT76820B publication Critical patent/AT76820B/en

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Description

  

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  Verfahren zur Herstellung von festen Bisulfiten. 



   Den Gegenstand der vorliegenden Erfindung bildet ein Verfahren. bisulfite durch Aussalzen aus ihren Lösungen in fester Form dadurch rein zu gewinnen, dass zur   verdi längung   der Bisulfite aus den Lösungen Salze verwendet werden, die in einer gesättigten Lösung des be- 
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   des zur Verdrängung aus der Lösung verwendeten   Salzes durch Waschen mit einer solchen Lösung befreit wird. So kann Beispielsweise Natriumbisulfit aus einer   gesättigten Lösung mit   
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   man   feste Bisultite als vollständig gleichmässige reine Produckte. 



   Die allgemein bekannte   Massnahme des Aussalzens hat im besonderen   auch schon zur Abscheidung von Alkalisulfiten bzw. Bisulfiten aus   Lösungen Anwendung gefunden, indem   vorgeschlagen wurde (D. R. P. Nr. 138028), Metalloxyde insonderheit Zinkoxyd, oder Materialien, die solches enthalten, wie geröstete arme Zinkerze, mit schwefeliger Säure in Gegenwart von Wasser und Alkalisalz, z. B. Kochsalz, zu behandeln und so durch doppelte Umsetzung eine Lösung von Metallchlorid und Natriumsulfit bzw. -bisulfit herzustellen und aus dieser gemischten   Lösung schliesslich das Alkalisulfit durch Sättigen mit Alkalichlorid, z. B. Kochsalz. abzuscheiden.     während Metallchlorid der Hauptsache nach   in   Lösung   bleibt.

   Der ausgesalzene Niederschlag 
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  Process for the production of solid bisulfites.



   The subject of the present invention is a method. bisulfites can be obtained in solid form by salting out their solutions by using salts to dilute the bisulfites from the solutions, which are dissolved in a saturated solution of the
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   the salt used for displacement from the solution is freed by washing with such a solution. For example, sodium bisulfite can be obtained from a saturated solution with
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   solid bisultites are completely uniform and pure products.



   The well-known measure of salting out has already found application in particular for the separation of alkali sulfites or bisulfites from solutions by suggesting (DRP No. 138028) that metal oxides, in particular zinc oxide, or materials that contain such, such as roasted poor zinc ores, should be used sulphurous acid in the presence of water and an alkali salt, e.g. B. table salt to treat and so by double reaction to produce a solution of metal chloride and sodium sulfite or bisulfite and finally the alkali metal sulfite by saturation with alkali metal chloride, z. B. table salt. to be deposited. while metal chloride mainly remains in solution.

   The salted out precipitate
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Claims (1)

2. Ausführungsform des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, dass man in eine Lösung von Natriumsulfit Chlorwasserstoff einleitet. 2. Embodiment of the method according to claim 1, characterized in that hydrogen chloride is introduced into a solution of sodium sulfite. 3. Ausführungsform des Verfahrens nach Anspruch 1, zur Herstellung von Natriumbisulfit, dadurch gekennzeichnet, dass man in eine gesättigte Lösung von Natriumsulfit Natnumbisulfat einträgt und das sich ausscheidende Natriumbisulfit, von beigemengtem Natriumsulfat durch Waschen mit einer gesättigten Natriumbisulfitlösung befreit. 3. Embodiment of the method according to claim 1, for the production of sodium bisulfite, characterized in that sodium bisulfate is introduced into a saturated solution of sodium sulfite and the sodium bisulfite which separates is freed from added sodium sulfate by washing with a saturated sodium bisulfite solution.
AT76820D 1914-03-30 1914-03-30 Process for the production of solid bisulfites. AT76820B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT76820T 1914-03-30

Publications (1)

Publication Number Publication Date
AT76820B true AT76820B (en) 1919-06-25

Family

ID=3598470

Family Applications (1)

Application Number Title Priority Date Filing Date
AT76820D AT76820B (en) 1914-03-30 1914-03-30 Process for the production of solid bisulfites.

Country Status (1)

Country Link
AT (1) AT76820B (en)

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