Rapid Production of Biodiesel in Mesoscale Oscillatory Baffled Reactors
Rapid Production of Biodiesel in Mesoscale Oscillatory Baffled Reactors
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DOI：
10.1002/ceat.201200031
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发表时间：
2012-07
影响因子：
2.1
通讯作者：
A. Phan;A. Harvey;Valentine C. Eze
中科院分区：
文献类型：
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作者：
A. Phan;A. Harvey;Valentine C. Eze
以菜籽油和甲醇为原料，在三种介孔反应器中进行了连续碱催化酯交换反应。三种反应器的诱导时间均随振荡雷诺数的增加而缩短。整体折流板、钢丝绒折流板和螺旋折流板的诱导停留时间分别为1.5、2.5和4.0次，达到了稳定的稳定状态。实验和模拟结果均表明，在给定的条件下，均相酯交换反应存在一个最佳停留时间。由于皂化副反应，较长的停留时间导致脂肪酸甲酯含量降低。结果表明，生物柴油可以在工业上可接受的转化率水平(>； 95 %)在<； 5 最小停留时间内生产。这需要高催化剂浓度和良好的混合相结合。
Continuous alkali‐catalyzed transesterification of rapeseed oil with methanol was carried out in three mesoreactor designs. The induction time decreased with oscillatory Reynolds number for all three reactors. Stable steady states were achieved within induction times of 1.5, 2.5, and 4.0 residence times for the integral, wire wool, and helical baffle designs, respectively. Both experimental and simulated results indicated that under the given conditions there is an optimal residence time for homogeneous transesterification. Higher residence times resulted in reduced fatty acid methyl ester content due to the saponification side reaction. The results demonstrate that biodiesel can be produced at an industrially acceptable level of conversion (> 95 %) in < 5 min residence time. This requires a combination of high catalyst concentration and good mixing.