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发明授权
CN101596412B 用于分离酸性气体的强化聚乙烯胺固定载体复合膜及其制备方法 有权 许可

用于分离酸性气体的强化聚乙烯胺固定载体复合膜及其制备方法
摘要：
本发明涉及一种用于分离酸性气体的强化聚乙烯胺固定载体复合膜及其制备方法。以聚砜或聚醚砜超滤膜为基膜，对其进行预处理；将聚乙烯胺水溶液分别与聚苯胺纳米纤维水分散液、气相纳米二氧化硅水分散液和乙二胺水溶液混合，配制成铸膜液，利用涂膜装置将铸膜液涂敷在基膜上；干燥，分别得到分离酸性气体的聚乙烯胺-聚苯胺纳米纤维复合膜、聚乙烯胺-气相纳米二氧化硅复合膜和聚乙烯胺-乙二胺复合膜。该方法过程简单，固定载体复合膜成膜性能和稳定性良好，其主要参数为：CO2渗透速率可达150×10-6cm3(STP)/cm2.s.cmHg，CO2/CH4(体积比10∶90)、CO2/N2(体积比20∶80)最高分离因子分别可达220、110。
摘要（英）：

The invention relates to a strengthened polyethylene amine fixed carrier composite membrane for separating acid gas and a preparation method thereof. Polysulfone or polyethersulfone ultrafiltration membrane is taken as a basic membrane to be pre-treated; polyvinylamine water solution is mixed with polyaniline nanofibre aqueous dispersion, gas-phase nano-silica aqueous dispersion and quadrol water solution respectively to prepare membrane casting solution which is coated on the basic membrane with a coating device; the basic membrane is dried to respectively obtain polyethylene amine-polyaniline nanofibre composite membrane, polyethylene amine-gas-phase nano-silica composite membrane and polyethylene amine-quadrol composite membrane for separating acid gas. The method has simple process. The fixed carrier composite membrane has favourable membrane forming performance and favourable stability, and has the following parameters: the infiltration rate of CO2 is 150*10<-6>cm<3>(STP)/cm<2>.s.cmHg, and the highest separation factor of CO2/CH4 (volume ratio10:90) and CO2/N2(volume ration 20:80) are respectively 220 and 110.

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