【摘要】 介绍了在KOH催化剂作用下棉籽油与甲醇反应生成棉籽油甲酯即生物柴油的研究工作。用精棉籽油和毛棉籽油为原料 ,考察酯交换反应条件如醇油比、催化剂用量、反应温度、反应时间对棉籽油转化率和甲酯得率的影响。应用正交实验的方法得出精棉籽油酯交换反应的最佳反应条件为 :反应温度 4 5℃ ,醇油摩尔比为 6∶1,催化剂用量为 1 1% ,反应时间为 6 0min。采用常压蒸馏的方法回收酯交换反应中过剩的甲醇。同时研究了甘油分离精制的方法 ,所得甘油的纯度可达97 86 %。实验室制得的棉籽油甲酯生物柴油的主要性能指标符合ASTM制定的生物柴油的标准。更多还原

【Abstract】 A research was made of the reaction of transesterification of cottonseed oil,using KOH as catalysts.Through orthogonal analysis of parameters in a four-factor and three-level test,the optimum conditions obtained for the transesterification are molar ratio of methanol to oil 6∶1,usage amount of KOH catalyst 1.1% and reaction temperature 45℃.The unreacted methanol was separated by atmospheric distillation and recycled to reuse for reaction.The reovery of glycerol is conducted by vacuum distillation.The properties of biodiesel fuel has a similar specification to diesel fuel from petroleum.更多还原