摘要
研究了响应面法优化东京野茉莉油制备生物柴油的工艺。通过单因素实验,对影响转化率的四个主要因素:油醇摩尔比、催化剂用量、反应时间、反应温度进行考察,并根据Box-Behnken中心组合进行4因素3水平的实验设计,以东京野茉莉生物柴油转化率为响应值,进行响应面分析(RSA)。结果表明,东京野茉莉生物柴油的最佳工艺条件为:油醇摩尔比1∶8、催化剂用量为油质量的0.78%、反应时间2.2 h、反应温度60℃,理论转化率为95.81%。实际验证值为95.32%,理论值与实际值相对误差为0.49%,说明通过响应面法能得到一个预测试验结果的模型方程。以东京野茉莉油为原料通过酯化反应制取的生物柴油与0#柴油及国标GB/T 20828-2007主要性能相似,通过与石油柴油调和或添加降凝剂等方法,可改善低温流动性。
The research that response surface methodology（ RSM） optimized the technological conditions of production of biodiesel from wild Styrax tonkinensis was studied. By single- factor experiments,four major factors influencing the extraction yield were observed,including molar ratio of oil to methanol,dosage of catalyst,reaction time,and reaction temperature. On the basis of single- factor experiments,the experiments were carried out according to Box-Behnken central composite experiment design,and the conversion of biodiesel was chose as response value to do the RSA experiments. The results showed that the optimum conditions were： molar ratio of oil to methanol 18,dosage of catalyst0. 78%,reaction time 2. 2 h,and reaction temperature 60 ℃. The predicted conversion of biodiesel was 95. 81%,while the actual extraction yield was 95. 32%,with relative error of 0. 49%,the results of which suggest that a prediction model equation of testing results could be arrived. The fuel characteristics of bio- diesel processed by the transesterification of Styrax tonkinensis oil were the same as that of No. 0#diesel and GB / T 20828- 2007,blending with diesel fuel or adding depressant of biodiesel could improve low- temperature fluidity.
出处
《广州化工》
CAS
2015年第1期46-49,58,共5页
GuangZhou Chemical Industry
基金
江西省教育厅科研基金(GJJ12232)
江西农业大学大学生创新创业训练计划(DC201334
201310410007
201410410023
201410410066)
江西农业大学创新发展基金(CX201110)
关键词
东京野茉莉
响应面法
生物柴油
酯交换反应
styrax tonkinensis
response surface analysis methodology
biodiesel
transesterification
