Continuous preparation of biodiesel with rapeseed oil

Using rapeseed oil as raw material,the technologic flow of continuous transesterification with tubular reactor was explored to produce biodiesel,and the optimal parameters were obtained.The results showed that the conversion rate of rapeseed oil was 92.92% under following conditions:methanol dosage 20%(based on the mass of rapeseed oil),catalyst KOH dosage 0.8%(based on the mass of rapeseed oil),transesterification temperature 60℃ and material velocity 0.17 mL/min.The technology has some advantages of simple operation,continuous transesterification,convenient separation of product and so on.