以猪油为原料,选用KOH为碱性催化剂制备生物柴油.经单因素实验及正交实验研究了油醇比、反应温度、反应时间和催化剂用量对生物柴油产率的影响.结果表明:在实验条件下各因素对生物柴油产率影响的大小依次为:油醇体积比＞催化剂用量＞反应温度＞反应时间.最佳反应条件为:油醇体积比4:1,反应温度60℃,KOH用量为1.1％(油重),反应时间为45 min,产率为91.94％,脂肪酸甲酯含量为96.3％,精制后总甘油含量0.23％.%KOH was seleceted as base catalyst to produce biodiesel from lard. The single factor experiment and the othogonal experiment combination design are adopted to study the effects of volume ratio of lard to methanol, reaction temperature, reaction time and catalyst dosage on biodiesel yield. The results indicated that the order of factors that influence biodiesel yield under the experiment conditions is as follows: volume ratio of lard to methanol > catalyst dosage > reaction temperature > reaction time. The optimal reaction parameter as follows: volume ratio of lard to methanol 4:1, reaction temperature 60℃ , KOH 1.1%, reaction time 45min, biodiesel yield 96. 3% , total glycerol 0. 23%
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