以矩形错流移动床床内颗粒流动为考察对象，在前人工作的基础上，明确了体积膨胀应力参数 ｋ的物理意义，完善了床内颗粒应力分布的理论预测；并提出了颗粒间发生剪切滑移的理论判据，由此可对不同过床气速条件下床内颗粒流速分布区域的分界点作出理论预测。同时选择了与热态实验物料堆比重相近的小米和硅胶珠为冷态实验物料，在矩形错流移动床中实验考察了床内颗粒流速分布随过床气速的变化规律，结果表明，理论预测与实验相符较好，基于此提出了矩形错流移动床床内颗粒流速分布的预测方法 Based on the previous work, the physical meaning of the volume expansion stress parameter k is clarified, and the theoretical prediction of the particle stress distribution in the bed is improved. The intergranular particles Shear slip of the theoretical criteria, which can be over bed bed velocity distribution of particles within the bed velocity to make a theoretical prediction of the demarcation point. At the same time, millet and silica gel beads with the same specific gravity as the hot experimental material stack were chosen as the cold experimental materials. The variation of particle velocity distribution with over bed air velocity in the rectangular cross-flow moving bed was investigated experimentally. The results show that the theory The prediction is in good agreement with the experiment. Based on this, the prediction method of particle velocity distribution in a rectangular cross-flow moving bed is proposed