Comparison of trickle-bed and upflow reactor performance at high pressure: Model predictions and experimental observations
Comparison of trickle-bed and upflow reactor performance at high pressure: Model predictions and experimental observations
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DOI：
10.1016/0009-2509(96)00071-1
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发表时间：
1996-05
影响因子：
4.7
通讯作者：
M. Khadilkar;Yuan-xin Wu;M. Al-Dahhan;M. Duduković;M. Colakyan
中科院分区：
文献类型：
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作者：
M. Khadilkar;Yuan-xin Wu;M. Al-Dahhan;M. Duduković;M. Colakyan
实验室滴流床和上流式反应器在一系列操作条件下的比较，其中包括气体和液体反应物的限制，已被调查使用氢化α-甲基苯乙烯异丙苯在己烷溶剂中超过2.5%的钯氧化铝挤出物催化剂作为测试反应。结果表明，在低压高液料浓度、气限条件下，滴流床反应器的反应性能优于升流式反应器。在高压和低液体进料浓度下，反应变为液限反应，上流式反应器性能更好。得出的结论是，上流或下流的优点取决于反应系统类型（即，反应是液体或气体限制）。一个单一的标准，用于确定限制反应物的建议，它可以解释大多数的文献中报道的数据，这些反应器。实验观察和预测的反应堆规模和颗粒规模的模型在文献中的比较。
Comparison of laboratory trickle-bed and up-flow reactors over a range of operating conditions, which cover both gas and liquid reactant limitations, has been investigated using hydrogenation of alpha-methylstyrene to cumene in a hexane solvent over 2.5% Pd on alumina extrudate catalyst as a test reaction. The results show that when the reaction is gas limited at low pressure and high liquid feed concentration, trickle bed reactor outperforms the upflow reactor. At high pressure and low liquid feed concentration, the reaction becomes liquid limited and upflow reactor performs better. It is concluded that the advantage of upflow or downflow depends on the reaction system type (i.e. whether the reaction is liquid or gas limited). A single criterion for identifying the limiting reactant is proposed which can explain most of the data reported in the literature on these reactors. Comparison of the experimental observations and the predictions of the reactor scale and pellet scale models available in the literature is presented.