A novel adsorption cycle for CO2 recovery:: Experimental and theoretical investigations of a temperature swing compression process

被引:23
作者
Walton, KS [1 ]
LeVan, MD [1 ]
机构
[1] Vanderbilt Univ, Dept Chem Engn, Nashville, TN 37235 USA
基金
美国国家航空航天局;
关键词
fixed-bed adsorption; nonisothermal effects; CO2; capture; pressure swing; temperature swing compression;
D O I
10.1080/01496390500524834
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A novel adsorption cycle is examined experimentally and theoretically for recovering carbon dioxide from a 50 mol% mixture with carbon monoxide. Several adsorbents are considered, and zeolite NaY is chosen for the process due to its high capacity and selectivity for CO 2 in the presence of CO. The process consists of three steps. The bed is fed the gas mixture at 273 K until CO 2 breakthrough occurs. The bed then undergoes countercurrent blowdown of CO 2 while heating at 391 K and is finally cooled to the initial feed temperature once the bed has been depleted of CO 2 . Results are presented from laboratory scale experiments and are described using numerical simulations. This novel cycle provides a method for capturing and producing CO 2 without the need for a purge gas and has low energy requirements if waste heat is available.
引用
收藏
页码:485 / 500
页数:16
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