摘要
通过对我们自行研制的产氧量为 Q-=1～ 5 L/m in的双吸附柱的小型 PSA分离空气制氧系统进行的吸附过程计算 ,分析了空气流经 PSA多孔吸附介质填充床层时 ,多孔介质结构参数及操作参数对吸附性能的影响。结果表明 :1.渗透率随介质颗粒直径的增大而增大 ,并且随颗粒直径的增加 ,其对渗透率的影响增加。而压降随多孔吸附介质颗粒直径的增大而减小。 2 .渗透率与空隙率基本成正抛物线关系 ,压降随空隙率的增大而减小。 3.压降随着渗透率的增大而减小。 4 .在不同的毛细管截面形状条件下 ,空隙率和渗透率的影响较小 ,而颗粒直径对渗透率的影响较大 ,颗粒直径较大时 ,这种影响才比较明显。当吸附介质颗粒直径或空隙率一定时 ,细长条截面的填充方式具有最高的渗透率。 5 .对于较低流速范围 (约 <0 .1m/s) ,流速对压降的影响较小 ,否则 ,影响较大。
This paper mainly calculated some parameters related to the performance of adsorption process of a small scale PSA oxygen device designed by ourselves and the value of the flux of productive oxygen of the device is 1~5 L/min According to the results,we also analyzed the influnce of ZMS structure parameter on the performance of adsorption process of PSA method.The results show that:1 Permeability increases as the value of diameter of a ZMS particle increases.When the value of the diametert is higher,the trend becomes obvious.But the pressure drop drops with the increasing of the diameter's value.2 Permeability increases dramatically with the increasing of closeness(fractional void volume ε ).But the pressure drop is the opposite tendence.3 When permeability increases,the pressure drop drops.4 To different shape of the transverse of pore,closeness has little effect on permeability,however,the diameter of a particle has much effect on permeability,especially when the value of diameter is the higher.When the shape of the transverse of pore is long and narrow,the value of permeability is highest.5 In a lower area of value of the flow rate(about<0 1 m/s)of the air through the adsorption column,the flow rate has little effect on the pressure drop,otherwise it will have much effect on the pressure drop.
出处
《低温与特气》
CAS
2002年第3期5-7,共3页
Low Temperature and Specialty Gases
