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[1]李鑫,仲兆祥,张峰,等.多孔陶瓷膜的气体渗透模型[J].南京工业大学学报(自然科学版),2013,35(04):48-52.[doi:10.3969/j.issn.1671-7627.2013.04.010]
 LI Xin,ZHONG Zhaoxiang,ZHANG Feng,et al.Model of gas permeation in porous ceramic membranes[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2013,35(04):48-52.[doi:10.3969/j.issn.1671-7627.2013.04.010]
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多孔陶瓷膜的气体渗透模型()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
35
期数:
2013年04期
页码:
48-52
栏目:
出版日期:
2013-07-01

文章信息/Info

Title:
Model of gas permeation in porous ceramic membranes
文章编号:
1671-7627(2013)04-0048-05
作者:
李鑫仲兆祥张峰金万勤邢卫红
南京工业大学 国家特种分离膜工程技术研究中心,江苏 南京 210009
Author(s):
LI Xin ZHONG Zhaoxiang ZHANG Feng JIN Wanqin XING Weihong
National Engineering Research Center for Special Separation Membrane,Nanjing University of Technology,Nanjing 210009,China
关键词:
陶瓷膜 渗透性能 气体渗透
Keywords:
ceramic membrane permeability gas permeation
分类号:
TQ028.8
DOI:
10.3969/j.issn.1671-7627.2013.04.010
文献标志码:
A
摘要:
为了揭示气体在多孔陶瓷膜中的传质规律,研究陶瓷膜在20~500 ℃下的N2渗透性能。实验测定了平均孔径为100、200和500 nm的陶瓷膜渗透速率; 在达西定律的基础上,分别依据K-C方程和H-P方程建立气体传质模型,修正相关参数并进行比较和预测。结果表明:在考察的膜孔径范围内,气体的传质机制主要为黏性流扩散,气体的渗透速率随温度的升高而减小,随膜平均孔径和孔隙率的增大而增大,随膜厚度的增加而减小,修正的K-C方程能较好地描述N2在陶瓷膜孔中的传递规律。
Abstract:
The gas permeation in porous ceramic membranes at the temperature from 20 to 500 ℃ was studied.The gas permeation rates of membranes with pore sizes of 100,200,and 500 nm were investigated.According to Darcy’s Law,the models based on K-C equation and H-P equation were established for prediction.The results showed that the transport mechanism was viscous flow diffusion in the range of studied pore size.The gas permeation rate decreased with the increasing temperature and membrane thickness,and increased with the increasing membrane pore size and porosity.The results based on modified K-C equation agreed well with the experimental data of nitrogen.

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备注/Memo

备注/Memo:
收稿日期:2012-06-11
基金项目:国家自然科学基金(21125629,21276124); 江苏省工业支撑计划(BE2011185); 江苏省环保厅资助项目(201018)
作者简介:李鑫(1984—),男,重庆秀山人,硕士,主要研究方向为无机膜; 邢卫红(联系人),研究员,E-mail:xingwh@njut.edu.cn..
更新日期/Last Update: 2013-07-07