Study on PSA Oxygen producing process under plateau region: Effect of purging flow rate on oxygen concentration and recovery

Abstract

The effect of purging flow rate and oxygen product concentration and recovery rate under different altitude conditions (50 m-4540 m) was studied on the PSA oxygen production platform. The results show that the higher the altitude, the less the purging flow rate consumption in PAS process. Product oxygen recovery rate at altitudes of 50 m, 2810 m, 3080 m, 3550 m, 4140 m and 4540 m is 39.6%~42%, 42%~47%, 43%~46%, 43.4%~45.5%, 42%~46% and 48%~52.5% respectively. At the same altitude, the oxygen recovery first increases and then decreases with the increase of purging flow rate, and there is an optimal balance between oxygen recovery and purging flow rate. This study can provide reference for the regulation of oxygen production process of PSA at high altitude.