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Effect of membrane system configuration on the performance of polysulfone hollow fiber membrane system for CO2/CH4 separation

机译:膜系统构型对聚砜中空纤维膜系统CO2 / CH4分离性能的影响

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摘要

In this study we focused on the effect of one- and two-stage membrane system configurations in series arrangement for the CO2/CH4 separation. Asymmetric polysulfone hollow fiber membranes were fabricated from 33%wt of polysulfone polymer using a simple dry/wet phase inversion process. Interestingly, the pressure normalized flux of CO2 was decreased with increasing of the membrane stages. In addition, the selectivities of the asymmetric hollow fiber membrane showed a more constant trend with increasing of' feed pressure. Between the two configurations, two-stage membrane configuration showed the most constant trend of, selectivity values. This results confirmed that the two stage membrane configuration posses a significant influence on gas transport properties which lead to better selectivity values. The effect of stage cut on membrane system configurations was also investigated. This study suggested that the best CO2/CH4 separation was achieved by using two-stage membrane system configuration.
机译:在这项研究中,我们集中于串联布置的一级和二级膜系统对CO2 / CH4分离的影响。使用简单的干/湿相转化工艺,由33%wt的聚砜聚合物制成不对称的聚砜中空纤维膜。有趣的是,随着膜级的增加,CO2的压力归一化通量降低了。另外,随着进料压力的增加,不对称中空纤维膜的选择性显示出更恒定的趋势。在两种构型之间,两级膜构型显示出选择性值的最恒定趋势。该结果证实了两级膜构型对气体传输性能具有显着影响,这导致更好的选择性值。还研究了切段对膜系统构型的影响。这项研究表明,采用两级膜系统配置可以实现最佳的CO2 / CH4分离效果。

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