摘要
建立了双筒分子筛变压吸附产氧系统筛床及组件的数学模型。该模型采用了 Langmuir等温吸附方程模拟分子筛的吸附特性 ,用线性驱动力方程考虑吸附过程中的传质影响 ,并考虑了吸附过程的热效应。采用该模型和有限差分方法 ,对系统性能进行仿真 ,并与实验数据进行比较。结果表明本文所建立的数学模型能较好地模拟实际过程 ,同时指出对参数进行试验测定是十分必要的。
A mathematical model for simulating concentric-bed and other components of molecular sieve oxygen concentrator is established. In the model, the binary Langmuir equilibrium adsorption equation is adopted to describe the adsorption performance of the adsorbent, the linear driving force (LDF) model is used to describe the mass transfer rate, and the thermal effect during adsorption is considered. The finite difference method is used in simulation and comparison. Numerical results have a reasonable agreement with the experimental research.
关键词
数学模型
分子筛产氧系统
仿真
吸附特性
机载设备
pressure swing adsorption
molecular sieve
gas separation
onboard oxygen generation system (OBOGS)
