| 混合气中C6H6的膜气体吸收分离过程 |
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| 引用本文： | 李睿,徐军,张丽珍,王连军,李健生,孙秀云.混合气中C6H6的膜气体吸收分离过程[J].膜科学与技术,2010,30(2). |
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| 作者姓名： | 李睿 徐军 张丽珍 王连军 李健生 孙秀云 |
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| 作者单位： | 南京理工大学,化工学院,南京,210094 |
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| 基金项目： | 江苏省省级环保科技项目(2005005) |
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| 摘 要： | 以疏水性聚丙烯中空纤维膜为气液接触膜,n-甲酰吗啉(n-Formyl morpholine,NFM)水溶液为吸收剂,研究了膜气体吸收技术分离混合气中苯的传质过程,考察了各操作参数对传质过程的影响,建立传质阻力模型,对模型预测值与实验值进行了对比.结果表明:提高气液相流量及浓度、吸收剂浓度,降低吸收液负载有利于提高传质通量.传质过程受液膜控制;在实验条件下,模型预测值与实验值符合较好,最大误差为20.2%,平均误差为9.2%.
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| 关 键 词： | 苯 聚丙烯中空纤维膜 膜气吸收 传质模型 |
Separation of C6H6 from gas mixture by using membrane-based gas absorption |
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| LI Rui,XU Jun,ZHANG Lizhen,WANG Lianjun,LI Jiansheng,SUN Xiuyun.Separation of C6H6 from gas mixture by using membrane-based gas absorption[J].Membrane Science and Technology,2010,30(2). |
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| Authors: | LI Rui XU Jun ZHANG Lizhen WANG Lianjun LI Jiansheng SUN Xiuyun |
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| Affiliation: | School of Chemical Engineering/a>;Nanjing University of Science and Technology/a>;Nanjing 210094/a>;China |
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| Abstract: | This work focused on a membrane based gas absorption process for the separation of benzene(C6H6)from N2.The aqueous solution of n-formyl morpholine(NFM) was used as absorbent and hydrophobic polypropylene hollow fiber membrane was used as gas-liquid contactor.Effects of various factors on the mass transfer were investigated.The resistance-in-series model was presented and the model predictions were compared with experimental data.It was found that the flux could be enhanced by increasing the flow rate of ga... |
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| Keywords: | benzene polypropylene hollow fiber membrane membrane gas absorption mass transfer model |
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