Method and device for continuously preparing biodiesel by connecting multiple towers in series

The invention discloses a method and a device for continuously preparing biodiesel by connecting multiple towers in series, wherein the method comprises the steps: feeding an alkali alcohol solution and raw oil from the bottom of a first-stage stirring reaction tower, stirring, mixing and reacting,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LI QIN, LYU ZHENXIAO, LIU XUEJUN, MA GEFEI, JI JIANBING, DU HAOZHAN, ZHU SHAOMING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES CANDLES CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY DETERGENTS FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS,OILS, OR FATTY ACIDS OBTAINED THEREFROM FATTY ACIDS FROM FATS, OILS OR WAXES FATTY ACIDS THEREFROM FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR LIQUEFIED PETROLEUM GAS LUBRICANTS METALLURGY NATURAL GAS PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention discloses a method and a device for continuously preparing biodiesel by connecting multiple towers in series, wherein the method comprises the steps: feeding an alkali alcohol solution and raw oil from the bottom of a first-stage stirring reaction tower, stirring, mixing and reacting, discharging crude biodiesel and byproduct crude glycerol from the top of the tower, feeding into a static separation tank, quickly layering, collecting lower-layer crude glycerine, refluxing part of the crude glycerine into the bottom of the first-stage stirring reaction tower, and recycling the catalyst and methanol dissolved in the crude glycerine; and feeding the upper-layer crude biodiesel in the static separation tank into the bottom of a second-stage stirring reaction tower, fully stirring and mixing with the alkali alcohol solution again, reacting, and discharging from the tower top. The process is simple, the multi-stage stirring reaction towers are combined to strengthen the reaction process, the reaction