Fixed-bed adsorption of carbon dioxide/methane mixtures on silicalite pellets

被引：53
|
作者：
Delgado, Jose A. [1 ]
Uguina, Maria A. [1 ]
Sotelo, Jose L. [1 ]
Ruiz, Beatriz [1 ]
Gomez, Jose M. [1 ]
机构：
[1] Univ Complutense Madrid, Dept Chem Engn, E-28040 Madrid, Spain
来源：
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY | 2006年 / 12卷 / 01期
关键词：
carbon dioxide; methane; silicalite; adsorption; fixed-bed; PSA simulation;
D O I：
10.1007/s10450-006-0134-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The adsorption of carbon dioxide and methane on silicalite pellets packed on a fixed bed has been studied. Equilibrium and kinetic measurements of the adsorption of carbon dioxide and methane have been performed, and a binary adsorption isotherm for carbon dioxide/methane mixtures has been obtained. A model based on the LDF approximation for the mass transfer has been used to describe the breakthrough curves obtained experimentally. A PSA cycle has been proposed for obtaining methane with purity higher than 98% from carbon dioxide/methane mixtures containing 38% and 50% methane, and its performance has been simulated using the proposed model. The simulation results show that silicalite can be a suitable adsorbent for employment in a PSA separation process for carbon dioxide removal from coalseam and landfill gases.
引用
收藏
页码：5 / 18
页数：14
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