疏水性聚丙烯中空纤维膜中n-甲酰吗啉膜吸收含苯废气过程模拟  

Process Simulation on Absorption of Benzene Using n-Formyl Morpholine Solution in Hydrophobic Polypropylene Hollow Fibers

作　　者：李睿[1] 徐军[1] 王连军[1] 李健生[1] 孙秀云[1] 

机构地区：[1]南京理工大学化工学院,江苏南京210094

出　　处：《过程工程学报》2009年第4期695-700,共6页The Chinese Journal of Process Engineering

基　　金：江苏省省级环保科技基金资助项目(编号:2005005)

摘　　要：以疏水性聚丙烯中空纤维膜为气液膜接触器,n-甲酰吗啉水溶液为吸收剂,研究了膜气体吸收工艺分离C6H6/N2的传质过程.在非润湿条件下,建立了膜气体吸收C6H6传质微分模型,模拟了C6H6在疏水性聚丙烯中空纤维膜管程及膜孔内的传质过程,并对C6H6的吸收速率进行预测.结果表明,在实验条件下,膜气体吸收C6H6的速率为(0.89～6.13)×10-2mg/(m2·s),微分模型对吸收速率预测的平均误差为1.9%,能准确描述中空纤维膜吸收C6H6的过程.A membrane based gas absorption process for the separation of benzene（C6H6） from C6H6/N2 mixture gas was studied.The aqueous solution of n-formyl morpholine was used as absorbent and hydrophobic polypropylene hollow fiber membrane as gas-liquid contactor.For non-wetted mode,a differential model was presented to simulate the mass transfer process of C6H6 in the tube side and membrane pore of hollow fiber.The values of C6H6 absorption rate were also predicted to compare with experimental values.The results show that the absorption rate achieved（0.89～6.13）×10-2 mg/（m2·s） under the experimental conditions.The average error of absorption rate of model predicted was 1.9%,and the model could more accurately describe absorption process in hollow fibers.

关 键 词：膜气体吸收 中空纤维膜 有机废气 传质微分模型 

分 类 号：TQ028.8[化学工程]