Abstract: Theoretical analysis of separation process for enriching nitrogen from air using hollow fiber membranes showed the effects of various operation parameters and membrane performance on separation results. By varying the operation conditions, nitrogen-rich gases with concentrations of 85-99.6% (vol. )were obtained, while the recovery wasbetween 78-23%. A counter-current plug model and ;) mixing plug model were verified by comparing the calculated results with the experimental data. Both models can satisfy the needs of industrial simulation and design calculation.

摘要： 本文对用中空纤维膜从空气中富集氮气的过程进行研究,较好地揭示了过程中各参数及膜性能与分离结果的关系.改变实验条件可得到浓度为85%～99.6%的富氮气体,回收率为78%～23%.实验对理论模型进行了验证,结果表明,在实验浓度范围内采用柱塞流逆流模型和全混柱塞流模型的计算值与实验值基本吻合,模型可以满足工业模拟和设计要求.