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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received October 17, 2000
Accepted January 9, 2001
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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CO2 Recovery from Flue Gas by PSA Process using Activated Carbon

Clean Technology Research Center, KIST, P.O.Box 131, Cheongryang, Seoul 130-650, Korea 1Department of Chemical Rngineering, Sogang University, Seoul 121-742, Korea 2Power Generation Research Lab, KEPRI, Yusong-ku, Taejon 305-380, Korea
nabk@kist.re.kr
Korean Journal of Chemical Engineering, March 2001, 18(2), 220-227(8), 10.1007/BF02698463
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Abstract

An experimental study was performed for the recovery of CO2 from flue gas of the electric power plant by pressure swing adsorption process. Activated carbon was used as an adsorbent. The equilibrium adsorption isotherms of pure component and breakthrough curves of their mixture (CO2 :N2 :O2=17 : 79 : 4 vol%) were measured. Pressure equalization step and product purge step were added to basic 4-step PSA for the recovery of strong adsorbates. Through investigation of the effects of each step and total feed rate, highly concentrated CO2 could be obtained by increasing the adsorption time, product purge time, and evacuation time simultaneously with full pressure-equalization. Based on the basic results, the 3-bed, 8-step PSA cycle with the pressure equalization and product purge step was organized. Maximum product purity of CO2 was 99.8% and recovery was 34%.

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