Effect of water vapor from power station flue gas on CO2 capture by vacuum swing adsorption with activated carbon

被引：0

作者：

Xu D. ^{[1
,2
]}

Zhang J. ^{[2
]}

Li G. ^{[2
]}

Xiao P. ^{[2
]}

Webley P. ^{[2
]}

Zhai Y.-C. ^{[1
]}

机构：

[1] School of Material and Metallurgy, Northeastern University

[2] Department of Chemical Engineering, Monash University

来源：

Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2011年 / 39卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Activated carbon; Carbon dioxide; Flue gas; Vacuum swing adsorption; Water vapor;

D O I：

10.1016/s1872-5813(11)60016-9

中图分类号：

学科分类号：

摘要：

Due to the high absolute humidity of real flue gas, activated carbon, a hydrophobic adsorbent, was used to selectively adsorb CO2 by vacuum swing adsorption in this study. The objective of this work is to study the feasibility and advantage of CO2 capture along with simultaneous moisture removal by activated carbon and the effect of H2O on CO2 capture from wet flue gas streams. Through experiment and analysis, the "S" shape isotherms of water indicated water was easier to be desorbed from activated carbon. Then a cone shape model was proposed to depict water distribution inside the adsorption bed. As a consequence, water vapor hardly influenced the CO2 capture performance. Moreover, the process can be operated under a relatively high vacuum pressure and short evacuation time. The preliminary results showed that our one-bed VSA process could yield a good CO2 recovery of over 80% and a reasonable purity of 43%.

引用

页码：169 / 174

页数：5

共 23 条

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