Abstract:

Aiming at miniaturization research，we developed a new structure PSA oxygen generator with rotary six-columns. This paper introduces the operating principle of the rotary six-columns PSA oxygen generator，and experimental study on the effects of main process parameters on the miniature rotary six-columns PSA oxygen system. The experimental results indicated that with the increase of rotary speed，the oxygen purity of product increased firstly but decreased afterward，and there was an optimal rotating speed for a specific feed flow rate which ensured the purest oxygen. With the increase of feed flow rate，the purity of oxygen increased and the recovery decreased，therefore，there was an optimal feed flow rate. The ratio of pressurization time to adsorption time had obvious influence on oxygen concentration，and pressure equalization steps increased oxygen purity and recovery rate obviously compared with ordinary PSA oxygen generators. This device could offer 92% oxygen concentration production with a smaller ratio of column height to diameter and shorter cycle time.

摘要：

针对变压吸附空分制氧装置的微型化趋势，研制了一种新型六塔旋转变压吸附制氧装置。本文介绍了新型装置的工作原理，且通过实验研究了六塔旋转PSA制氧过程中几个主要工艺参数对系统性能的影响。实验表明，提高转速，产品氧的纯度随之先提高后降低，对应于每个进料流量都存在一个获得最高氧纯度的最佳转速；而且，进料流量小时氧纯度较低，进料流量大时回收率降低，因此存在一个最佳进料流量；充压时间与吸附时间的比值对产品氧浓度的影响非常显著；与常见的PSA装置相比，均压步骤明显地提高了这种新型结构PSA装置的氧纯度和氧回收率。这种装置的高径比小，循环时间短，可获得92%的氧产品。