The rapid pressure swing adsorption (RPSA) technology has been widely used for applications including portable oxygen generators due to high O₂ productivities and low bed size factors (BSF, total amount of adsorbent per ton of O₂ produced per day, kg/TPDO₂). The improvement of RPSA process has been a key issue for efficient O₂ production in terms of its generally lower O₂ recovery as compared to other processes. In this work, a dual-column RPSA oxygen production system with an intermittent purge step (intermittently switching between purge and interruption) was designed to investigate the effects of interruption frequency (the number of interruptions during a purge step) and times on the O₂ recovery, purity, productivity and BSF. Experimental results show the improvement on O₂ production performance using the intermittent purge step in comparison to conventional continuous purge step. Under the optimized interruption frequency of 2 and time of 0.3 s, the O₂ recovery, purity and productivity were increased from 36 to 39.2%, 89.5 to 93%, and 6.24 to 6.49 mmol/kg/s, respectively, while the BSF was decreased from 57.94 to 55.75 kg/TPDO₂.

由于高O ₂生产率和低床尺寸因子（BSF，每天生产的每吨O ₂吸附剂总量，kg / TPDO ₂），快速变压吸附（RPSA）技术已被广泛用于包括便携式制氧机在内的应用中。）。RPSA工艺的改进一直是有效生产O ₂的关键问题，因为与其他工艺相比，其通常较低的O ₂回收率。在这项工作中，设计了具有间歇吹扫步骤（在吹扫和中断之间间歇切换）的双塔式RPSA制氧系统，以研究中断频率（吹扫步骤中的中断次数）和时间对O _{2的影响。}回收率，纯度，生产率和BSF。实验结果表明，与常规的连续吹扫步骤相比，使用间歇吹扫步骤可提高O _2的生产性能。在最佳中断频率2和0.3 s的时间下，O _2的回收率，纯度和生产率分别从36％增至39.2％，89.5％增至93％/ kg / s和6.24至6.49 mmol / kg / s，而BSF为从57.94降至55.75 kg / TPDO ₂。