Biodiesel preparation device and preparation method

Abstract

The invention relates to a biodiesel preparation device and a biodiesel preparation method. The device comprises a magnetic stirring mechanism, an ultrasonic esterification reaction mechanism, and a liquid phase splitter. The magnetic stirring mechanism comprises a stirring tank, a vertical round permanent magnet, a magnetic ionic liquid storage tank, and a raw material storage tank. A layering baffle plate is arranged in the middle part of the stirring tank, such that the stirring tank is divided into an upper stirring chamber and a lower stirring chamber. The bottom the lower stirring chamber is recessed, and the vertical round permanent magnet is rotatably arranged in the recess. The raw material storage tank and the magnetic ionic liquid storage tank respectively communicate with the lower part and the upper part of the lower stirring chamber through pipelines. The ultrasonic esterification reaction mechanism comprises an esterification reactor and an ultrasonic generation unit which are connected. Upper and lower parts of the esterification reactor respectively communicate with the upper stirring tank and the liquid phase splitter through pipelines. With the device provided by the invention, a magnetic stirring effect and an ultrasonic high-frequency oscillation effect are integrated. Raw oil, methanol and a catalyst are fully mixed, and are subjected to ultrasonic effect, such that an esterification reaction is enhanced, and biodiesel preparation speed is increased.

Description

technical field [0001] The invention relates to a biodiesel preparation device and a preparation method. Background technique [0002] With the depletion of oil resources and the rapid increase of human energy demand, countries all over the world are accelerating the development of new alternative energy sources. Biodiesel is a new type of pollution-free and renewable energy, which has the advantages of easy biodegradation, low emission of combustion pollutants, and less greenhouse gas emission, and meets the requirements of sustainable development. In industrial production, vegetable oil is generally used as raw material, and biodiesel is prepared through transesterification reaction, and acid and alkali are usually used as catalysts. Traditional equipment for preparing biodiesel mostly uses mechanical stirring reactors, and the mixing is mainly realized by stirring paddles. With each stirring paddle as the center, the reaction liquid forms a local small circulation, which...

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Problems solved by technology

Traditional equipment for preparing biodiesel mostly uses mechanical stirring reactors, and the mixing is mainly realized by stirring paddles. With each stirring paddle as the center, the reaction liquid forms a local small circulation, which cannot fully contact and mix the oil, methanol and catalyst. Insuffic

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