变压吸附气体分离过程的系统熵解析

Systematic Entropy Analysis of PSA Gas Separation Process

采用系统熵分析的方法对变压吸附气体分离过程进行了分析。并且以PSA空气分离过程为例进行了计算,得到了一个周期内升压阶段和高压吸附阶段压缩机向系统提供的负熵、产品气体的熵以及分离熵效率随吸附压力、解吸压力的变化情况,找出了分离熵效率最高时的最佳吸附压力和解吸压力。

Pressure swing adsorption （PSA） gas separation process is analyzed with the systematic entropy analytical method. Taking for example PSA air separation process, variations of negative entropy, and entropy of product gas and separation efficiency of entropy with changing of adsorption pressure and desorption pressure are obtained during pressure boosting stage and high-pressure adsorption stage in a period. The above variations are supplied by a compressor. The optimal adsorption pressure and desorption pressure are also obtained when separation efficiency of entropy reaches maximum.