| A multifunctional integrated biodiesel reactor was developed for the regional production of high-quality biodiesel from swill-cooked dirty oil using the transesterification reaction. The results showed that the optimal reaction conditions of the multifunctional integrated biodiesel reactor were obtained as follows: reaction temperature 65?℃, reaction time 120 min, catalyst dosage 0.75%, molar ratio of methanol to oil 8∶?1 and stirring speed 250 r/min. Under these conditions, the yield of biodiesel was the highest, achieving 97.3%. The cloud point, cold filter plugging point and pour point of the prepared swill-cooked dirty oil biodiesel were 6, 5?℃ and 4?℃, respectively. The oxidation stability, flash point, acid value, cetane number, density and kinematic viscosity were 4.8 h, 153?℃, 0.37 mgKOH/g, 59, 888.9 g/cm3 and 4.06 mm2/s, respectively. Except for the oxidation stability, other indexes of the prepared biodiesel satisfied the standards EN14112 and ASTM D6751. The various reaction devices of the experimental reactor were connected in turn via pipelines and power transmission devices, which had the advantages of high efficiency, simplicity, convenient operation and less occupied area. |
