| 聚乙烯醇-海藻酸钠共混中空纤维复合膜用于异丙醇脱水 |
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| 引用本文： | 宋明宇,沈江南,陈欢林. 聚乙烯醇-海藻酸钠共混中空纤维复合膜用于异丙醇脱水[J]. 石油化工, 2004, 33(3): 216-219 |
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| 作者姓名： | 宋明宇 沈江南 陈欢林 |
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| 作者单位： | 浙江大学,材料与化工学院,浙江,杭州,310027 |
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| 基金项目： | 国家重点基础研究发展计划(2003CB615706)，国家高技术研究发展(2003AA328020)。 |
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| 摘 要： | 制备了以聚砜(PS)中空纤维超滤膜为底膜的聚乙烯醇(PVA)-海藻酸钠(SA)共混复合膜,并用于异丙醇脱水的研究。考察了PVA/SA配比、交联剂种类和浓度以及渗透汽化实验中的操作条件对膜性能的影响。在PVA/SA质量比为4/1、料液温度45℃、料液中异丙醇质量分数为90%时,复合膜的通量和分离因子分别为427g/(m2·h)和1727,并且根据实验数据和Arrhenius经验方程式,计算得出异丙醇渗透活化能为17 42kJ/mol。
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| 关 键 词： | 中空纤维膜 异丙醇 渗透汽化 脱水 聚砜 聚乙烯醇 海藻酸钠 复合膜 |
| 文章编号： | 1000-8144(2004)03-0216-04 |
| 修稿时间： | 2003-10-31 |
Sodium Alginate and Poly Vinyl Alcohol Hollow Fiber Composite Membrane for Dehydration of Isopropanol |
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| Song Mingyu,Shen Jiangnan,Chen Huanlin. Sodium Alginate and Poly Vinyl Alcohol Hollow Fiber Composite Membrane for Dehydration of Isopropanol[J]. Petrochemical Technology, 2004, 33(3): 216-219 |
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| Authors: | Song Mingyu Shen Jiangnan Chen Huanlin |
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| Abstract: | A composite membrane with sodium alginate(SA) and polyvinyl alcohol(PVA) was prepared,where the support layer was a hollow fiber ultrafiltration membrane of polysulfone.Influence of PVA/SA ratio,the kind and concentration of crosslinking agent and operating conditions on membrane separation were studied.Total flux and separation factor of membrane were 427 g/(m~2·h),and 1 727 correspondently when mass ratio of PVA/SA was 4/1,operating temperature was 45 ℃ and mass fraction of isopronanol in feed was 90%.According to experimental data and Arrhenius's empirical equation,an E_a value of 17.42 kJ/mol was obtained. |
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| Keywords: | hollow fiber membrane isopropanol pervaporation dehydration polysulfone polyvinyl alcohol sodium alginate composite membrane |
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