CIESC Journal

• Volume 4 • 上一篇    下一篇

DIFFUSION MODES IN A DIFFUSION-CELL ADSORBER

修国华; 李平; 金革   

  1. Department of Chemical Engineering, Shenyang Institute of Chemical Technology, Shenyang 110021, China
  • 收稿日期:1994-11-19 修回日期:1995-11-19 出版日期:1996-12-28 发布日期:1996-12-28
  • 通讯作者: 修国华

DIFFUSION MODES IN A DIFFUSION-CELL ADSORBER

XIU Guohua; LI Ping; JING Ge   

  1. Department of Chemical Engineering, Shenyang Institute of Chemical Technology, Shenyang 110021, China
  • Received:1994-11-19 Revised:1995-11-19 Online:1996-12-28 Published:1996-12-28
  • Contact: XIU Guohua

摘要: Theoretical considerations on diffusion modes of adsorbates in diffusion-cell adsorbers are being investigated. By studying the effects of the operating and model parameters on the response curves calculated by surface diffusion model and pore diffusion model, and noting the differences in the results, the following conditions are recommended for the prediction of the prevailing diffusion mode in diffusion-cell experiments λ≤0.1,BiB≥100,and N≥1 The theoretical prediction thus obtained checks well with experimental data taken from literature. New solutions are also presented for the surface diffusion model and the pore diffusion model with rectangular adsorption isotherm.

关键词: adsorption;diffusion mode;diffusion-cell adsorber

Abstract: Theoretical considerations on diffusion modes of adsorbates in diffusion-cell adsorbers are being investigated. By studying the effects of the operating and model parameters on the response curves calculated by surface diffusion model and pore diffusion model, and noting the differences in the results, the following conditions are recommended for the prediction of the prevailing diffusion mode in diffusion-cell experiments λ≤0.1,BiB≥100,and N≥1 The theoretical prediction thus obtained checks well with experimental data taken from literature. New solutions are also presented for the surface diffusion model and the pore diffusion model with rectangular adsorption isotherm.

Key words: adsorption, diffusion mode, diffusion-cell adsorber