DE382983C - Process for the production of potassium pyrosulfite - Google Patents

Process for the production of potassium pyrosulfite

Info

Publication number
DE382983C
DE382983C DEM76985D DEM0076985D DE382983C DE 382983 C DE382983 C DE 382983C DE M76985 D DEM76985 D DE M76985D DE M0076985 D DEM0076985 D DE M0076985D DE 382983 C DE382983 C DE 382983C
Authority
DE
Germany
Prior art keywords
potassium
production
pyrosulfite
hydroxide
potassium pyrosulfite
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
Application number
DEM76985D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Michael & Co J
Original Assignee
Michael & Co J
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 Michael & Co J filed Critical Michael & Co J
Priority to DEM76985D priority Critical patent/DE382983C/en
Application granted granted Critical
Publication of DE382983C publication Critical patent/DE382983C/en
Expired legal-status Critical Current

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
    • C01D5/004—Preparation in the form of granules, pieces or other shaped products

Description

Verfahren zur Herstellung von Kaliumpyrosulfit. Zwecks Herstellung von Kaliumpyrosulfit leitet man entweder schweflige Säure in Kalilauge, Kaliumcarbonat oder Bicarbonat ein, oder man versetzt eine Kaliumsulfatlösung mit der berechneten Menge Kaliumhydroxyd und sättigt sie mit schwefliger Säure. Durch Verdunsten der filtrierten. Lösungen oder beim Erkalten scheidet sich das Kaliumpyrostrlfit K2 S, 0E aus.Process for the production of potassium pyrosulfite. For the purpose of manufacture Potassium pyrosulphite leads either to sulphurous acid in potassium hydroxide solution or to potassium carbonate or bicarbonate, or the calculated potassium sulfate solution is added Amount of potassium hydroxide and saturate it with sulphurous acid. By evaporation of the filtered. The potassium pyrostrlfit K2 separates into solutions or when cooling S, 0E off.

Die erste dieser Methoden .ist verhältnismäßig teuer, die zweite ergibt keine quantitative Umsetzung, und die erhaltenen Lösungen sind durch Gips verunreinigt.The first of these methods is relatively expensive, the second yields no quantitative conversion, and the solutions obtained are contaminated with gypsum.

Es hat sich nun ergeben, daB man eine quantitative Bildung von Kaliumpyrosulfit erreicht, wenn man in einer konzentrierten Lösung von Kaliumsulfat Bariumcarbonat, Bariumhydrat oder Strontiumcarbonat oder Strontiumhydrat suspendiert und in die Suspension schweflige Säure einleitet. Die Umsetzung erfolgt dann z. B. bei Anwendung von Bariumcarbonat nach folgender Gleichung: BaC03+KZSO,+zSO=+H@O -BaS04+COZ-E-aKIHS0, Die Lösung des Kaliumbisulfits wird durch Filtration von dem unlöslichen Bariumsulfat bzw. Strontiumsulfat getrennt und aus der Lösung desKaliumbisulfits in bekannterWeise das Pyrosulfit zur Abscheidung gebraucht.It has now been found that a quantitative formation of potassium pyrosulphite is possible achieved when one in a concentrated solution of potassium sulfate barium carbonate, Barium hydrate or strontium carbonate or strontium hydrate and suspended in the Initiate suspension sulphurous acid. The implementation then takes place z. B. when using of barium carbonate according to the following equation: BaC03 + KZSO, + zSO = + H @ O -BaS04 + COZ-E-aKIHS0, The solution of the potassium bisulfite is made by filtration from the insoluble barium sulfate and strontium sulfate and separated from the solution of potassium bisulfite in a known manner the pyrosulfite is used for separation.

Claims (1)

PATENT-AH SPRUCH: Verfahren zur Herstellung von Kaliumpyrosulfitdurch Einleiten von S O@ in eine ein Erdalkalihydroxyd enthaltende Kaliumsulfatlösung und Abscheiden des Pyrosulfits aus der erhaltenen, filtrierten Lösung, :dadurch gekennzeichnet, daß hierbei ein Bariumcarbonat oder -hydroxyd bzw. Strontiumcarbonat oder -hydroxyd in Suspension enthaltende Kaliumsulfatlösung verwendet wird. PATENT-AH SPRUCH: Process for the production of potassium pyrosulfite by introducing SO @ into a potassium sulfate solution containing an alkaline earth metal hydroxide and separating the pyrosulfite from the resulting filtered solution, characterized in that a barium carbonate or hydroxide or strontium carbonate or hydroxide in suspension containing potassium sulfate solution is used.
DEM76985D 1922-03-08 1922-03-08 Process for the production of potassium pyrosulfite Expired DE382983C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM76985D DE382983C (en) 1922-03-08 1922-03-08 Process for the production of potassium pyrosulfite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM76985D DE382983C (en) 1922-03-08 1922-03-08 Process for the production of potassium pyrosulfite

Publications (1)

Publication Number Publication Date
DE382983C true DE382983C (en) 1923-10-01

Family

ID=7317369

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM76985D Expired DE382983C (en) 1922-03-08 1922-03-08 Process for the production of potassium pyrosulfite

Country Status (1)

Country Link
DE (1) DE382983C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3615198A (en) * 1969-05-15 1971-10-26 Wellman Lord Inc Process employing potassium sulfite for recovering sulfur dioxide from gases containing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3615198A (en) * 1969-05-15 1971-10-26 Wellman Lord Inc Process employing potassium sulfite for recovering sulfur dioxide from gases containing same

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