Preparation of supported ionic liquid membranes (SILMs) for the removal of acidic gases from crude natural gas
Preparation of supported ionic liquid membranes (SILMs) for the removal of acidic gases from crude natural gas
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DOI：
10.1016/j.desal.2007.10.085
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发表时间：
2009-01
期刊：
影响因子：
9.9
通讯作者：
You-In Park;Beom-Sik Kim;Yong-Hoon Byun;S. H. Lee;E. Lee;Jung Min Lee
中科院分区：
文献类型：
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作者：
You-In Park;Beom-Sik Kim;Yong-Hoon Byun;S. H. Lee;E. Lee;Jung Min Lee
通过使用室温离子液体（RTIL）和聚合物的多相分离过程，开发了新型支撑离子液体膜（SILM）用于从粗天然气中去除酸性气体。PVDF（聚偏氟乙烯）和BMIMBF 4分别用作膜和RTIL的聚合物材料。用扫描电镜（SEM）对SILM的结构进行了表征。为了研究渗透性能，在各种操作条件下用CO2、H2S和CH 4测试SILM。由于CO_2和H_2S对RTIL的亲合力比CH_4高，这两种酸性气体的渗透系数分别在30-180和160-1100 barrer之间。CO_2/CH_4和H_2S/CH_4的选择性分别为25-45和130-260。
Through a multi-phase separation process with the use of room temperature ionic liquid (RTILs) and polymer, new supported ionic liquid membranes (SILMs) were developed for the removal of acidic gases from crude natural gas. PVDF (poly vinylidene fluorolide) and BMImBF4were used as polymer materials for membrane and RTILs respectively. The structure of SILMs was characterized with SEM. To investigate the permeation properties, the SILMs were tested with CO2, H2S and CH4at various operating conditions. Since CO2and H2S have higher affinity toward RTILs than CH4, the permeability coefficients of these two acidic gases were found to be considerably high at 30–180 and 160–1100 barrer, respectively. Moreover, the selectivity of CO2/CH4and H2S/CH4were found to be 25–45 and 130–260, respectively.