| PVAm/PAN复合膜的制备及其对CO2/CH4的分离性能 |
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| 引用本文： | 王志,董传明,吕强,王世昌. PVAm/PAN复合膜的制备及其对CO2/CH4的分离性能[J]. 化工学报, 2003, 54(8): 1188 |
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| 作者姓名： | 王志 董传明 吕强 王世昌 |
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| 作者单位： | 天津大学化学工程研究所, 天津 300072 |
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| 基金项目： | 国家自然科学基金 (No 2 98760 2 7,2 99760 3 1)，天津市自然科学基金 (No 993 80 3 711)资助项目~~ |
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| 摘 要： | 引 言天然气和沼气中含有的大量CO2 将直接影响这些气体的燃烧效果和以这些气体为原料的产品质量 ,并对管线及设备造成腐蚀 ;同时由于CO2 等气体导致的温室效应 ,正引起严重后果 ;再者 ,发展生物技术也对CO2 的分离提出要求 .因此 ,分离CO2 技术已成为目前世界膜界研究的重点[
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| 关 键 词： | 复合膜 聚乙烯基胺(PVAm) 二氧化碳 气体分离 载体 |
PREPARATION AND CO2 SEPARATION PERFORMANCE OF POLYVINYL AMINE/POLYACRYLONITRILE COMPOSITE MEMBRANES |
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| WANG Zhi,DONG Chuanming,LV Qiang,WANG Shichang. PREPARATION AND CO2 SEPARATION PERFORMANCE OF POLYVINYL AMINE/POLYACRYLONITRILE COMPOSITE MEMBRANES[J]. Journal of Chemical Industry and Engineering(China), 2003, 54(8): 1188 |
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| Authors: | WANG Zhi DONG Chuanming LV Qiang WANG Shichang |
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| Abstract: | New polymeric membrane materials——polyvinyl amine (PVAm) with different primary amine contents were synthesized.By covering polyacrylonitrile(PAN) ultrafiltration membranes with PVAm, the PVAm/PAN composite membranes for CO2/CH4 separation were prepared. The composite membranes containing more primary amino groups have higher selectivity for CO2/CH4.The cross-linking of acid or glutaradehyde could improve the gas permselectivity of the composite membranes. With decreasing CO2 content in the feed gas, the CO2/CH4 separation factor increased.When the feed gas was 25%(vol) CO2 and 75%(vol) CH4, the CO2 permeation rate was 4.1×10-9cm3(STP) •cm-2•Pa-1•s-1, and the CO2/CH4 separation factor was 180. |
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| Keywords: | composite membrane polyvinyl amine carbon dioxide gas separation carrier |
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