| 明胶膜醇／水渗透汽化性能的研究 |
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| 引用本文： | 丁马太,陈笑萍.明胶膜醇／水渗透汽化性能的研究[J].厦门大学学报(自然科学版),1993,32(1):70-74. |
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| 作者姓名： | 丁马太 陈笑萍 |
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| 作者单位： | 厦门大学化学系
(丁马太，夏海平，丁俊琪，杨建灵)，厦门福达感光材料有限公司研究所(陈笑萍) |
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| 摘 要： | 用牛骨胶制备明胶膜,用于乙醇/水混合物的渗透汽化分离研究,结果表明,该膜在常温下分离85％乙醇时运行3h便可到达稳定操作状态;料液中醇含量增大、膜的分离系数提高但通量下降;而温度升高或汽相侧真空度提高都能导致膜通量与分离系数的同时提高。
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| 关 键 词： | 明胶膜 渗透汽化 乙醇 水 骨胶 膜 |
Studies on EtOH/H_2O Pervaporation Characteristics of Gelatin Membrane |
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| Ding Matai Xia Haiping Ding Junqi Yang Jianling.Studies on EtOH/H_2O Pervaporation Characteristics of Gelatin Membrane[J].Journal of Xiamen University(Natural Science),1993,32(1):70-74. |
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| Authors: | Ding Matai Xia Haiping Ding Junqi Yang Jianling |
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| Abstract: | Gelatin membrane cross-linked was prepared by casting aqueous mixture of Cr2(SO4)3 and gelatin onto a glass plate and then evaporating the water at room temperature. EtOH/H2O pervaporation characteristics of gelatin membrane, such as effects of time, downstream pressure, temperature, and feed concentration on flux and separation coefficient, were studied. It has been found that separation coefficient is increasing and flux is decreasing along with the increasing of ethanol concentration in feed. But both the pervaporation rate and the selectivity increase as the temperature of system rises or the downstream pressure drops. |
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| Keywords: | Gelatin membrane Pervaporation Separation of ethanol/water mixture |
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