用餐饮业废弃油脂制备生物柴油的研究

摘要

Biodiesel was synthesized from waste cooking oil with gaseous feeding of methanol. The effects of reaction temperature, methanol/oil molar ratio, amount of catalyst and reaction time were studied. According to the orthogonal experiment,the optimal transesterification conditions for waste cooking oil were reaction temperature at 98℃, methanol to oil ratio 20:1 (mol: mol), dosage of catalyst was 7％ of the oil weight and reacting for 14 h. The yield could be over 95％ under these conditions.%利用餐饮业废弃油脂在甲醇气相进料情况下合成生物柴油,研究了反应温度、醇油摩尔比、催化剂用量和反应时间的变化对合成生物柴油的影响.采用正交试验得出餐饮业废弃油脂酯交换的最佳反应条件为反应温度95℃,醇油摩尔比20:1,催化剂(AR级浓硫酸)用量7%(占油重的7%,下同),反应时间14 h,在此反应条件下生物柴油产率可达到95%以上.