High-efficiency supercritical oil extraction method

A high-efficiency supercritical oil extraction method is provided. According to the method, in an early extraction stage, extraction is performed using an extractant along an extraction kettle from top to bottom; in a middle extraction stage, the extraction kettle is longitudinally flipped by 180 de...

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Bibliographische Detailangaben
Hauptverfasser:	Niu, Pengfei, Qiu, Nongxue, Su, Xiaojie, Meng, Yonghong, Guo, Yurong, Deng, Hong
Format:	Patent
Sprache:	eng
Schlagworte:	ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES CANDLES CHEMISTRY DETERGENTS ESSENTIAL OILS FATTY ACIDS THEREFROM METALLURGY PERFORMING OPERATIONS PERFUMES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRODUCING (PRESSING, EXTRACTION), REFINING AND PRESERVINGFATS, FATTY SUBSTANCES (e.g. LANOLIN), FATTY OILS AND WAXES,INCLUDING EXTRACTION FROM WASTE MATERIALS SEPARATION TRANSPORTING
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Beschreibung
Zusammenfassung:	A high-efficiency supercritical oil extraction method is provided. According to the method, in an early extraction stage, extraction is performed using an extractant along an extraction kettle from top to bottom; in a middle extraction stage, the extraction kettle is longitudinally flipped by 180 degrees, extraction is still performed using an extractant along the extraction kettle from top to bottom; in a later extraction stage, extraction is performed using a conventional extractant along the extraction kettle from bottom to top. Thus, the pressure effect and the critical extraction effect of the critical extractant are simultaneously exerted, thereby greatly improving the extraction efficiency of supercritical oil extraction, shortening the extraction time, and reducing the dosage of extractant, so as to achieve high-efficiency and low-cost oil extraction.