机载分子筛产氧器的数值模拟

A Mathematical Model for the Molecular Sieve Oxygen Generating System

介绍了机载分子筛产氧系统的工作原理和变压吸附的基本理论 ,建立了机载分子筛产氧器的数学模型。模型考虑了筛床内的传热传质和压力的变化以及吸附热引起的享利系数的变化等因素对吸附性能的影响 ;吸附床采用了串联混合池模型 ,吸附平衡量的计算采用线性吸附等温理论。

The operation principle of the onboard molecular sieve oxygen generating system and the basic theory of enriching oxygen by using pressure swing adsorption are briefly introduced in this paper.The nonisothermal adsorption model to simulate molecular sieve oxygen concentrator has been established,with consideration of the factors of mass transfer,heat transfer as well as of pressure varitaion in the column,where series mixed cell model is used to describe the molecular bed and linear driving force for adsorption rate and linear isothermal theory for calculating equilibrium amount adsorbed are adopted.The adsorption process is simulated by using this model and the results are analyzed.