Liquid-state hydrocarbon waste alkali liquid treatment method

The present invention discloses a liquid-state hydrocarbon waste alkali liquid treatment method, which comprises: removing oil substances from a waste alkali liquid, carrying out a high temperature wet oxidation treatment, adjusting the alkali concentration of the waste alkali liquid, recovering sod...

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Bibliographische Detailangaben
Hauptverfasser:	QIN LIJIAO, XU YING, ZHOU TONG, DENG DEGANG
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM INORGANIC CHEMISTRY METALLURGY TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	The present invention discloses a liquid-state hydrocarbon waste alkali liquid treatment method, which comprises: removing oil substances from a waste alkali liquid, carrying out a high temperature wet oxidation treatment, adjusting the alkali concentration of the waste alkali liquid, recovering sodium carbonate, carrying out evaporation concentration so as to further improve the alkali concentration in the solution and recover the remaining sodium salt, and reusing the treated waste alkali liquid. With the method of the present invention, the COD and the sulfides in the waste alkali liquid can be efficiently removed, the concentration difference of the sodium carbonate and the sodium sulfate in the solution being subjected to the high temperature wet oxidation treatment is utilized to recover the sodium salt in two times, the sodium hydroxide solution obtained after treating the waste alkali liquid is recycled, and the zero emission of the liquid-state hydrocarbon waste alkali liquid is achieved.