生物柴油酯基结构优化反应及低温流动性的研究

本实验主要研究了反应时间、反应温度、醇酸摩尔比和催化剂用量对棕榈酸异丙酯转化率的影响规律,并建立了拟合系数定常回归法用于构建这4种因素用于构建这4种因素对酯化反应单一及复合作用的数学模型,并且以实验得到的棕榈酸异丙酯和棕榈酸甲酯的运动黏度进行了综合对比分析。研究表明:用此数学模型计算所得转化率为92.61%,与实验值转化率92.98%相比较,相对误差仅为0.4%;用棕榈酸异丙酯代替棕榈酸甲酯能有效改善生柴油低温流动性。

Study on optimization of biodiesel ester structure and low temperature fluidity

In this paper, the effects of reaction time, reaction temperature, molar ratio of alkyd and catalyst dosage on the conversion of isopropyl palmitate were studied. A mathematical model of the fitting factor constant regression method for constructing the single and complex effects of these four factors on the esterification reaction was established, and a comprehensive comparative analysis of the experimental kinematic viscosity of isopropyl palmitate and methyl palmitate. The research have shown that the conversion rate calculated using this mathematical model is 92.61%, compared with the experimental value conversion rate of 92.98%, the relative error is only 0.4%, the use of isopropyl palmitate instead of methyl palmitate can effectively improve the low temperature fluidity of raw diesel