| 滴流床反应器的非定态操作 |
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| 引用本文： | 刘国柱,米镇涛. 滴流床反应器的非定态操作[J]. 化工学报, 2006, 57(4): 757-761 |
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| 作者姓名： | 刘国柱 米镇涛 |
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| 作者单位： | 天津大学化工学院,天津,300072;天津大学化工学院,天津,300072 |
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| 基金项目： | 科技部科研项目 , 中国石油化工总公司资助项目 |
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| 摘 要： | 采用蒽醌加氢反应为探针，研究了脉冲流操作、周期性填充和周期性操作3种非定态操作方式对TBR反应器性能的影响.结果表明，在脉冲流区操作TBR的催化剂质量空时收率比滴流区操作提高50%以上，表观动力学研究证实脉冲流区操作TBR蒽醌加氢反应的表观活化能比滴流区操作更接近本征活化能;催化剂与惰性颗粒的交替填充周期性地强化了气液相间传质速率，提高催化剂质量空时收率40%以上;反应器的周期性操作，同时强化气液和液固相间传质速率，改善反应器内的流体力学状况，从而提高反应的空时收率和选择性10%以上.
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| 关 键 词： | 滴流床反应器 非定态操作 蒽醌 加氢 |
| 文章编号： | 0438-1157（2006）04-0757-05 |
| 收稿时间： | 2005-04-26 |
| 修稿时间： | 2005-04-262005-07-05 |
Unsteady-state operation of trickle-bed reactor |
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| LIU Guozhu,MI Zhentao. Unsteady-state operation of trickle-bed reactor[J]. Journal of Chemical Industry and Engineering(China), 2006, 57(4): 757-761 |
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| Authors: | LIU Guozhu MI Zhentao |
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| Affiliation: | School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China |
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| Abstract: | The influences of the various unsteady-state operating modes, such as the operation under pulsing regimes, periodic packing mode and periodic feed, on the performance of the trickle-bed reactor (TBR) were investigated experimentally by using the hydrogenation of 2-ethylanthraquinone over Pd/Al_2O_3 as a model reaction on a laboratory-scale TBR. It was found that the mass space-time yields of TBR was increased by 50% under pulsing regimes due to the enhancement of inter-phase mass transfer, which was confirmed by apparent kinetics research. The mass space-time yield of catalyst was increased by 40% for using the periodic packing mode due to the significant enhancement of gas-liquid mass transfer rates under the interested conditions. The periodic operation of TBR, which improved inter-phase mass transfer and eliminated the external static liquid holdup, increased conversion and selectivity by 10%. |
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| Keywords: | trickle bed reactor (TBR) unsteady-state operation 2-ethylanthraquinone hydrogenation |
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