| Correlation between hysteresis of gas-liquid mass transfer and liquid distribution in a trickle bed |
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| 引用本文： | 王蓉,栾美琅,毛在砂,陈家镛. Correlation between hysteresis of gas-liquid mass transfer and liquid distribution in a trickle bed[J]. 中国化学工程学报, 1997, 5(2): 135-139 |
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| 作者姓名： | 王蓉 栾美琅 毛在砂 陈家镛 |
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| 作者单位： | Institute of Chemical Metallurgy，Academia Sinica，Institute of Chemical Metallurgy，Academia Sinica，Institute of Chemical Metallurgy，Academia Sinica，Institute of Chemical Metallurgy，Academia Sinica Beijing 100080，China，Beijing 100080，China，Beijing 100080，China，Beijing 100080，China |
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| 基金项目： | Supported by the National Natural Science Foundation of China and SINOPEC |
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| 摘 要： | The hysteresis of gas-liquid mass transfer rate and the corresponding radial liquiddistribution in a trickle bed reactor are measured to provide evidence for the correlation between thesetwo behaviors.Experimental results indicate that the hysteresis of gas-liquid mass transfer originatesfrom the nonuniformity of the hydrodynamic state of gas-liquid flow and the radial maldistributionof local k_(gia) corresponds very well to the radial maldistribution of liquid flow in the bed.The localliquid flow rate is also found to be nonuniform in the azimuthal direction.In view of maldistributedliquid flow even in the pulsing flow regime,the conventional plug flow model seems oversimplifiedfor describing the behavior of a trickle bed.
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| 关 键 词： | trickle-bed reactor radial liquid distribution gas-liquid mass transfer hysteresis |
| 收稿时间： | 1996-02-29 |
| 修稿时间： | |
Correlation between hysteresis of gas-liquid mass transfer and liquid distribution in a trickle bed |
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| WANG Rong,LUAN Meilang,MAO Zaisha,CHEN Jiayong. Correlation between hysteresis of gas-liquid mass transfer and liquid distribution in a trickle bed[J]. Chinese Journal of Chemical Engineering, 1997, 5(2): 135-139 |
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| Authors: | WANG Rong LUAN Meilang MAO Zaisha CHEN Jiayong |
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| Affiliation: | Institute of Chemical Metallurgy, Academia Sinica, Beijing 100080, China |
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| Abstract: | The hysteresis of gas-liquid mass transfer rate and the corresponding radial liquid distribution in a trickle bed reactor are measured to provide evidence for the correlation between these two behaviors. Experimental results indicate that the hysteresis of gas-liquid mass transfer originates from the nonuniformity of the hydrodynamic state of gas-liquid flow and the radial maldistribution of local kgia corresponds very well to the radial maldistribution of liquid flow in the bed. The local liquid flow rate is also found to be nonuniform in the azimuthal direction. In view of maldistributed liquid flow even in the pulsing flow regime, the conventional plug flow model seems oversimplified for describing the behavior of a trickle bed. |
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| Keywords: | trickle-bed reactor radial liquid distribution gas-liquid mass transfer hysteresis |
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