Ultrasonic biodiesel catalyzed equipment

Ultrasonic biodiesel catalyzed equipment

The ultrasound is the frequency of the acoustic wave of 2 × 104 Hz ~ 107 Hz, it exceeds the range of the human ear listening frequency. Ultrasonic wave propagation in a liquid medium, through the mechanical action of cavitation and thermal effects, resulting in a series of effects of mechanical, thermal, optical, electrical and chemical. Especially high power ultrasound, will produce a strong cavitation effect, thereby locally forming the instantaneous high-temperature, high-pressure, vacuum, and microjets. For chemical extraction, biodiesel production and sound chemical reaction, resulting in a local environment conducive to the reaction process, can greatly increase the speed of response, and reduce the reaction conditions. Biomass extraction purposes, will result in the destruction of the plant cell wall and the rapid penetration of the solvent, so that the active ingredient is extracted rapidly dissolved into the solvent, and thereby improve the extraction rate and shorten the extraction time, and solvent savings. Ultrasonic used for the hot biomass resource processing in recent years, research and development, most representative work ultrasonic enhanced extraction for the active ingredients of the plant for biodiesel and ultrasonic preparation.

Biodiesel key is catalyzed ester exchange reaction of the fatty acid glycerides with lower alcohols such as methanol, and the ultrasonic wave having a significant strengthening of the role of the ester exchange reaction, particularly in a heterogeneous reaction system can significantly enhance its mixed (emulsified) effects and promote the intermolecular contact reaction, the originally required the high temperature (high pressure) under the conditions of the reaction, at room temperature (or close to room temperature) can be completed under the conditions of, and shorten the reaction time. Ultrasonic not only used in the transesterification reaction, but also for the separation process of the reaction mixture.