摘要
为了获得超声强化酯交换反应制备生物柴油最佳工艺条件,为工业化生产提供借鉴。该文考察了超声功率密度、反应温度、催化剂用量和醇油摩尔比等因素对超声强化KOH催化酯交换反应过程的影响,并采用响应曲面分析方法(RSM)优化最佳工艺参数。研究结果表明:超声强化KOH催化酯交换反应制备生物柴油最佳工艺条件为:超声功率密度54.7W/L、反应温度34℃、催化剂用量为大豆油质量的1.3%、醇油摩尔比6︰1,此条件下酯交换反应甲酯质量分数为99.68%,经验证试验得实测值为99.56%。RSM优化的试验结果适合于碱催化酯交换反应制备生物柴油工艺,并能够预测不同条件下碱催化酯交换反应中的甲酯质量分数。
In order to obtain the optimal condition for biodiesel production from ultrasonic enhanced transesterification and provide reference for industrialisation of biodiesel,the effects of density of ultrasonic power,reaction temperature, aomunt of catalyst and molar ratio of methanol to oil on the ultrasonic enhanced transesterification catalyzed by potassium hydroxide were investigated,and the parameters for biodiesel production by using response surface method （RSM） were further optimized.The results showed that under the optimal condition i.e density of ultrasonic power 54.7 W/L,reaction temperature 34℃,amount of catalyst 1.3%,molar ratio of methanol to soybean oil 6：1,the content of methy-ester in transesterification was 99.68%,meanwhile,the experimental value of the content of methy-ester was 99.56%.The optimal experimental result of RSM is suitable for biodiesel production technologies based on transesterification catalyzed by alkali,and it can be used to predict the content of methy-ester in different conditions of transesterification catalyzed by alkali.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2010年第4期269-274,共6页
Transactions of the Chinese Society of Agricultural Engineering
基金
广州市科技计划项目(2007J1-C0451)
关键词
生物柴油
氢氧化钾
超声应用
酯交换反应
响应面分析
biodiesel
potassium hydroxide
ultrasonic applications
transesterification
response surface method
