D296R固定床催化酯化制备生物柴油

Biodiesel Production in a Fixed-Bed Reactor Using D296R as Heterogeneous Base Catalyst

对D296R大孔型强碱性阴离子交换树脂进行预处理、转型、再生,并用于固定床反应装置内催化棕榈油和甲醇进行连续酯交换反应,通过与其他树脂催化剂对比,研究了不同反应温度、醇油摩尔比和反应停留时间对生物柴油收率的影响.采用该催化剂催化制备生物柴油,催化活性较高.在醇油摩尔比为9∶1、反应温度为55,℃、反应停留时间为60,min时,酯交换制备生物柴油的产率达到89.5%.本研究对用于生物柴油的连续制备和大规模工业化生产有着重要的意义.

The macroporous base anion-exchange resin D296R was pretreated, transformed and regenerated to be used as the heterogeneous catalyst in a fixed-bed reactor for biodiesel production. By comparing to other resin catalysts, the effects of different reaction temperatures, molar ratios of methanol to oil and reaction residence times on biodiesel yield were studied. D296R showed strong catalytic activity and stability in yield of fatty acid methyl esters（FAME） by transesterification reaction. With molar ratio of methanol to oil being 9∶1, the biodiesel yield of D296R catalyzed transesterification is 89.5% at a reaction temperature of 55 and a reaction time of 60 min. Guidelines for continuous ℃production of biodiesel as well as its large-scale industrial application are provided based on the insight gained from the experimental results.