海滨锦葵油制备生物柴油工艺条件优化

Optimization of Technological Process for Synthesizing Biodiesel from Kosteletzkya virginica Oil

以海滨锦葵油为原料制备生物柴油。通过单因素实验及正交实验研究了反应温度、催化剂用量、醇油摩尔比、反应时间、搅拌强度等因素对酯交换率的影响。结果表明,在实验范围内各影响因素对酯交换率作用的大小依次为:搅拌强度>催化剂用量>醇油摩尔比>反应时间>反应温度。海滨锦葵油制备生物柴油的最佳工艺参数为:搅拌强度为1800r/min,催化剂KOH用量为海滨锦葵油质量的1%,醇油摩尔比6/1,反应时间60min,反应温度65℃,在该工艺条件下,酯交换反应3次,酯交换率达到97.8%。

Kosteletzkya virginica oil as raw materials was used to produce biodiesel. The single factor experiment and the orthogonal experiment combination design were adopted to study the effects of such factors as reaction temperature, catalyst dosage, mole ratio of methanol to Kosteletzkya virginica oil, reaction time and the rate of rotation on oil transesterification ratio. The results indicated the order of factors that influence the oil transesterification ratio within the experimental range was as follows ： the rate of rotation r 〉 catalyst dosage 〉 mole ratio of methanol to Kosteletzkya virginica oil 〉 reaction time 〉 reaction temperature. The optimal technological parameters of oil transesterification 1800r/min, catalyst dosage 0.6% , Kosteletzkya virginica oil should be as follows： the rate of rotation ratio of methanol to Kosteletzkya virginica oil 6/1, reaction time 60min and reaction temperature 65℃, and under such conditions, the total oil transesterification ratio after transesterification three times is 97.8%.