| 超临界溶液在陶瓷膜中的渗透过程分析及计算机模拟 |
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| 引用本文： | 汪朝晖,董军航,徐南平,时钧.超临界溶液在陶瓷膜中的渗透过程分析及计算机模拟[J].陶瓷科学与艺术,1998(4). |
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| 作者姓名： | 汪朝晖 董军航 徐南平 时钧 |
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| 作者单位： | 南京化工大学化学工程系 |
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| 基金项目： | 国家自然科学基金,国家教委优秀年青教师基金 |
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| 摘 要： | 基于孔径变化动力学方程、固体在超临界流体中溶解度模型及经典成核理论对超临界溶液在膜孔中的渗透过程（ＳｕｐｅｒｃｒｉｔｉｃａｌＳｏｌｕｔｉｏｎＩｎｆｉｌｔｒａｔｉｏｎ———ＳＣＳＩ）进行了理论分析，并根据由此建立的模型在计算机上模拟了ＳＣＳＩ过程中陶瓷膜孔径分布及流动平均孔径的变化情况，重点考察了压差及孔道表面的物理化学性质对渗透结果的影响。
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| 关 键 词： | 超临界溶液渗透 陶瓷膜 孔径改变 |
PROCESS ANALYSIS AND SIMULATION ON SUPERCRITICAL SOLUTION INFILTRATION IN CERAMIC MEMBRANE PORES |
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| Wang Zhaohui,Dong Junhang,Xu Nanping,Shi Jun.PROCESS ANALYSIS AND SIMULATION ON SUPERCRITICAL SOLUTION INFILTRATION IN CERAMIC MEMBRANE PORES[J].Ceramics Science & Art,1998(4). |
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| Authors: | Wang Zhaohui Dong Junhang Xu Nanping Shi Jun |
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| Affiliation: | Wang Zhaohui Dong Junhang Xu Nanping Shi Jun Department of Chemical Engineering,Nanjing University of Chemical Technology,Nanjing,210009,China |
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| Abstract: | A mathematical model was established for the supercritical solution infiltration process by combining the pore narrowing kinetics, the classical nucleation theory and the thermodynamic model of the SC solution. Computer simulation was performed by the proposed model, the results showed that two kinds of solute deposition mechanism, heterogeneous nucleation and homogeneous nucleation, could simultaneously or solely occur during the SCSI process under different conditions. |
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| Keywords: | supercritical solution infiltration\ ceramic membrane\ pore size change |
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