中文摘要：

煤矿乏风由于风排量大、瓦斯浓度低等特点很难利用传统的方式加以利用，一般将其直接排放到大气中，这不仅造成资源浪费而且对大气环境造成严重污染。热逆流氧化装置可以有效氧化乏风瓦斯并回收其中的热量，而由蜂窝陶瓷体填充的蓄热氧化床是其氧化装置的关键部件之一。通过对蓄热氧化床流动过程进行理论研究，得出3种常用蜂窝氧化床冷热态下的阻力计算数学模型，并结合算例分析得出以下结论：1）冷态下，氧化床阻力损失与其孔隙率、通道直径或边长及乏风进气速度等因素相关，在其他条件一定时，阻力损失与乏风进气速度成正比，与氧化床通道的边长或直径的平方及孔隙率成反比；2）在相同孔密度和孔隙率的条件下，方形通道蜂窝陶瓷氧化床的阻力损失最大，圆形阻力最小；3）热态下，氧化床阻力损失还与氧化床温度分布有关，某一处压强梯度的大小与该处的温度近似成平方的关系；4）氧化床运行时，伴随气体温度和流速在氧化床内部变化，气体所受到的阻力也发生剧烈变化，位于氧化床两端的预热段和蓄热段压强损失较小，而氧化床中心的反应段压强损失较大。

英文摘要：

At present, coal mine ventilation air methane （VAM） is directly discharged into the atmosphere because of its large volume and low concentration, which not only causes a waste of resources but also creates environmental pollution issue. The thermal flow-reversal reactor （TFRR） can effectively oxidize VAM and recover energy, in which the regenerative oxidation bed filled with considerable numbers of ceramic regenerators is one of the key parts of it. Through the the- oretical flow study of regenerative oxidation bed, three typos of math- ematical model of resistance for both cold and thermal state of ceramic regenerators were obtained. Combining with an example, the follow- ing conclusions were obtained： （1） at cold state, the resistance of oxidation bed is closely related to the porosity, diameter or side length of the channel and inlet velocity. While the other conditions kept constant, the resistance is directly proportional to the inlet ve- locity and inversely proportional to the porosity, square of channel di- ameter or side length. （2） under the conditions of the porosity and hole density, the resistance of tube-shapod ceramic regenerator is lower than other kinds of ceramic regenerators, and the square ce- ramic regenerator has the largest resistance. （3） At hot state, the re- sistance of oxidation bed is still related to its temperature field and the pressure gradient is approximately proportional to the square of the temperature. （4） When the oxidation bed operates, the airflow resis- tance changes strongly along the bed with the changes of temperature and velocity of air flow. The pressure loss of preheated and regenera- tive sections located at beth ends is lower than the center reaction section. The conclusions obtained may provide some new theoretical guidance for choosing parameters of oxidation bed and optimizing the rifling.