本文基于化学产氧的复杂物理化学过程,在对产氧装置的实验结果和物理过程合理分析与假设的基础之上,抽象出反应装置的物理模型,提出“层式反应”模型,,建立了反应器传热、传质和流动的二维非稳态数学模型。对反应装置内部速度、压力、温度和浓度场的分布规律展开研究,与实验实测值吻合较好。并就不同人体劳动强度、不同颗粒粒径对反应装置使用性能的影响进行了分析,为化学氧呼吸器的开发提供了理论参考。 Based on the complex physico-chemical processes of chemical oxygen production, based on the experimental results of oxygen plant and the reasonable analysis and assumptions of the physical processes, the physical model of the reactor is abstracted and the “layer reaction” model is proposed. A two-dimensional unsteady mathematical model of reactor heat transfer, mass transfer and flow was established. The distribution of velocity, pressure, temperature and concentration field inside the reactor was studied, which was in good agreement with the experimental data. The effects of different human labor intensity and different particle size on the performance of the reactor were analyzed, which provided a theoretical reference for the development of chemical oxygen respirator.