| 轴向流吸附床内流动特性的模拟研究 |
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| 引用本文： | 刘向军,刘应书,李永玲,张辉.轴向流吸附床内流动特性的模拟研究[J].力学学报,2012,44(1):88-95. |
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| 作者姓名： | 刘向军 刘应书 李永玲 张辉 |
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| 作者单位： | 1. 北京科技大学热能工程系;2. 北京科技大学热能工程系,; |
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| 基金项目： | 国家高技术研究发展计划资助项目 |
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| 摘 要： | 变压吸附过程是一个动态变压力变质量多孔介质流动与传热传质过程,
揭示过程的流动特性是深入研究吸附机理的基础.
基于严格质量守恒和动量守恒, 建立了吸附床内的气体流体、吸附传质的数学模型,
以某轴向流快速空分制氧吸附床为研究对象, 对吸附床内全循环过程进行了模拟, 对升压吸附、降压解吸和常压清洗各个阶段的流动特性进行了详细的分析,
并与空床、有料无吸附时的流动特性进行了对比.
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| 关 键 词： | 变压吸附 多孔介质 流动特性 模拟研究 |
| 收稿时间： | 2010-09-08 |
| 修稿时间： | 2011-06-16 |
MODELING OF THE FLOW CHARACTERISTIC IN AN AXIAL-FLOW RAPID PRESSURE SWING ADSORPTION BED |
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| Liu Xiangjun,Liu Yingshu Li Yongling Zhang Hui.MODELING OF THE FLOW CHARACTERISTIC IN AN AXIAL-FLOW RAPID PRESSURE SWING ADSORPTION BED[J].chinese journal of theoretical and applied mechanics,2012,44(1):88-95. |
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| Authors: | Liu Xiangjun Liu Yingshu Li Yongling Zhang Hui |
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| Institution: | Thermal Engineering Department, University of Science & Technology Beijing, Beijing 100083, China |
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| Abstract: | The gas flow characteristic in an adsorbent bed is a vital problem for further studying the mechanics of gas separation process.In this paper,a comprehensive mathematical model of gas flow and adsorption in an adsorbing bed,which based on mass and momentum conservation law,is established.A typical cyclic process of an axial-flow rapid pressure swing adsorption is numerically studied.The flow patterns in different cyclic period for pressurization,adsorption,depressurization,desorption and purge,are obtained.The flow characteristics and their difference from the gas flow in an empty bed and a no-adsorption bed are also studied. |
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| Keywords: | pressure swing adsorption porous medium gas flow numerical simulation |
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