Abstract The Aspen Adsim software was used to simulate and optimize the threebed VPSA oxygen enrichment process. The effects of operating variables, such as cycle time, pressure equalization time on the process performance were studied through adjusting related simulation parameters. As a result, the VPSA process produced O2 with a purity of 946% and a recovery of 56.6% when the cycle time and pressure equalization time are 75 s and 4 s respectively, the ratio of adsorption to desorption pressures is adjusted to be 2.88. In this design, the adsorption bed could be filled from feed gas under atmospheric pressure without energy consumption when the pressure in the bed is lower than the atmospheric pressure. In addition, some data were obtained to help to understand the VPSA process, which were difficult to get through experiment.
ZHOU Yuan-Yuan, YANG Hua-Wei, ZHANG Dong-Hui.Modeling of Energy-Saving VPSA Cycle for Oxygen Enrichment[J] Chemcial Industry and Engineering, 2013,V30(2): 53-57
2013, Vol. 30 
