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| Preparation of fatty acid ethyl ester by concentrated energy countercurrentultrasounic enhancement |
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| DOI：10.12166/j.zgyz.1003-7969/2019.11.009 |
| KeyWord:concentrated energy countercurrent ultrasound fatty acid ethyl ester deodorized distillate |
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| Abstract: |
| With soybean oil deodorized distillate as raw material, the fatty acid ethyl ester was prepared by reacting with ethanol through concentrated energy countercurrent ultrasonic enhancement. The effects of volume ratio of ethanol to oil, reaction temperature, ultrasonic power, catalyst dosage and reaction time on the conversion rate, yield and content of fatty acid ethyl ester and conversion rate of biodiesel were analyzed. The optimal experimental conditions for conversion rate of fatty acid ethyl ester were obtained by orthogonal experiment as follows: volume ratio of ethanol to oil 20∶ 1, reaction temperature 35 ℃, ultrasonic power 300 W, catalyst dosage 1.6% and reaction time 30 min. The optimal conditions for fatty acid ethyl ester yield were obtained as follows: volume ratio of ethanol to oil 30∶ 1, reaction temperature 40 ℃, ultrasonic power 600 W, catalyst dosage 1% and reaction time 30 min. The optimal conditions for fatty acid ethyl ester content were obtained as follows: volume ratio of ethanol to oil 20∶ 1, reaction temperature 40 ℃, ultrasonic power 600 W, catalyst dosage 1% and reaction time 60 min. The optimal conditions for biodiesel conversion rate were obtained as follows: volume ratio of ethanol to oil 25∶ 1, reaction temperature 35 ℃, ultrasonic power 500 W, catalyst dosage 1% and reaction time 30 min. |
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