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    • 6. 发明公开
    • 폴리이미드 중공사막 개질방법
    • 一种改进聚酰亚胺中空纤维膜的方法
    • KR1020090080255A
    • 2009-07-24
    • KR1020080006119
    • 2008-01-21
    • 명지대학교 산학협력단
    • 정욱진비아바제인아프리카얼리에로스리조을생아넬벨트란앤드류프레마시오그레이스니솔라박신정심은용김예경박준석지찬규남궁은
    • B01D71/56
    • A method of reforming a polyimide hollow fiber membrane and a polyimide hollow fiber membrane reformed by the method are provided, wherein the reformed polyimide hollow fiber membrane has an effect of recovering CH4 with a high purity by improving selectivity of CO2/CH4 of biogas, thereby removing CO2 from the biogas. A method of reforming a polyimide hollow fiber membrane comprises the steps of: submerging a polyimide hollow fiber membrane into a cross-linking agent to cross-link the polyimide hollow fiber membrane; and annealing the cross-linked polyimide hollow fiber membrane. The cross-linking agent is a mixture of N-(1-naphthyl)ethylenediamine and dihydrochloride. A reformed polyimide hollow fiber membrane for the separation of CO2 gas from biogas is characterized in that a polyimide hollow fiber membrane that has been reformed and annealed by the method has a CO2/CH4 selectivity range of 62 to 106 according to an annealing temperature of the membrane which has been increased as high as approximately 50% as compared to that of a non-reformed polyimide hollow fiber membrane, and a polyimide hollow fiber membrane that has been reformed by cross-linking and annealing has a CO2/CH4 selectivity range of 112 to 188 which has been incrased according to the annealing temperature of the polyimide hollow fiber membrane.
    • 提供了一种通过该方法重整的聚酰亚胺中空纤维膜和聚酰亚胺中空纤维膜的改性方法,其中重整的聚酰亚胺中空纤维膜具有通过提高生物气体的CO 2 / CH 4的选择性而以高纯度回收CH 4的作用,从而 从沼气中去除二氧化碳。 聚酰亚胺中空纤维膜的改性方法包括以下步骤:将聚酰亚胺中空纤维膜浸入交联剂中以交联聚酰亚胺中空纤维膜; 并对交联聚酰亚胺中空纤维膜进行退火。 交联剂是N-(1-萘基)乙二胺和二盐酸盐的混合物。 用于从生物气中分离CO 2气体的改性聚酰亚胺中空纤维膜的特征在于,通过该方法重整和退火的聚酰亚胺中空纤维膜的CO 2 / CH 4选择性范围为62至106,根据 与未改性的聚酰亚胺中空纤维膜相比,其膜的增加量高达约50%,并且通过交联和退火重整的聚酰亚胺中空纤维膜的CO 2 / CH 4选择性范围为112 至188,其根据聚酰亚胺中空纤维膜的退火温度而增加。