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多孔陶瓷膜的气体渗透模型
  • ISSN号：1671-7627
  • 期刊名称：南京工业大学学报(自然科学版)
  • 时间：2013.7.15
  • 页码：48-52
  • 分类：TQ028.8[化学工程]
  • 作者机构：[1]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
  • 相关基金：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）
  • 相关项目：材料化学工程
作者： 仲兆祥|张峰|金万勤|邢卫红|
关键词： 陶瓷膜, 渗透性能, 气体渗透, ceramic membrane , permeability , gas permeation
中文摘要：

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500nm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。

英文摘要：

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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新型流化床膜反应器的应用基础研究
期刊论文 9
材料化学工程
期刊论文 76 会议论文 18 获奖 4
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期刊信息
  • 《南京工业大学学报：自然科学版》
  • 北大核心期刊（2011版）
  • 主管单位:江苏省教育厅
  • 主办单位:南京工业大学
  • 主编：陆小华
  • 地址：南京市浦口区浦珠南路30号
  • 邮编：211800
  • 邮箱：journal@njut.edu.cn
  • 电话：025-58139286
  • 国际标准刊号：ISSN：1671-7627
  • 国内统一刊号：ISSN：32-1670/N
  • 邮发代号:
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  • 被引量:6160