| 煤矿乏风瓦斯变压吸附分离特性 |
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| 作者姓名： | 刘向军 刘应书 李永玲 杨雄 |
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| 作者单位： | 北京科技大学机械工程学院, 北京 100083 |
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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： | 以实验室活性炭吸附床为研究对象,建立了多维吸附床内煤矿乏风流动、吸附传质的数学模型.首先对活性炭富集煤矿乏风瓦斯过程进行了模拟,得到了各个循环步骤下床内详细的浓度分布和吸附量分布,模拟结果与实验结果符合较好.进而采用此模型,改变吸附压强、解吸压强和解吸温度等参数,对不同工况下瓦斯分离富集过程进行了对比模拟研究,揭示了煤矿乏风瓦斯变压吸附分离特性.
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| 关 键 词： | 煤矿 乏风瓦斯 变压吸附 解吸 计算机模拟 |
| 收稿时间： | 2012-12-10 |
Pressure swing adsorption characteristics for coal-mine ventilation air |
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| Affiliation: | School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | A comprehensive mathematical model of pressure swing adsorption (PSA) for separating and enriching coal-mine ventilation air methane (VAM) was established, which based on the mass and momentum conservation laws. A typical experimental process for VAM separation and enrichment in an axial-flow adsorption bed was numerically studied using active carbon pellets. The detailed distributions of gas concentration and adsorbance in the bed were obtained, and the calculated results are in good agreement with the experimental ones. The methane separation and enrichment processes in different cases were contrastively studied by varying the adsorption pressure, desorption pressure and desorption temperature to reveal the PSA characteristics for VAM separation and enrichment. |
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