Device and method for separating and extracting sodium and potassium

Disclosed is a device for separating and extracting, which is provided with: an ash reaction device (12) in which a solution having a temperature of approximately 60 DEG C is created using incineration ash containing sodium, potassium, and chloride; a cooling crystallization device (16) in which pot...

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Bibliographische Detailangaben
Hauptverfasser:	OKUMURA SATOSHI, SASAKI KATSUYA, HAMANO SHUJI, YAMAMOTO TSUNEHIRA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM INORGANIC CHEMISTRY METALLURGY
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Beschreibung
Zusammenfassung:	Disclosed is a device for separating and extracting, which is provided with: an ash reaction device (12) in which a solution having a temperature of approximately 60 DEG C is created using incineration ash containing sodium, potassium, and chloride; a cooling crystallization device (16) in which potassium chloride is generated and separated by reducing the temperature of the solution to 30 DEG C; an absorption tower (11) in which sodium bicarbonate is generated and separated by reacting the solution and a carbon dioxide-containing gas; and a circulation path (13) in which the liquid, from which potassium chloride and sodium bicarbonate were generated and separated in the cooling crystallization device (16) and the absorption tower (11), is returned to the ash reaction device (12).