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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received March 1, 2015
Accepted April 27, 2015

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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Performance analysis of K-based KEP-CO2P1 solid sorbents in a bench-scale continuous dry-sorbent CO2 capture process

Young Cheol Park Sung-Ho Jo Seung-Yong Lee Jong-Ho Moon Chong Kul Ryu¹ Joong Beom Lee¹ Chang-Keun Yi^†

Korea Institute of Energy Research, 152, Gajeong-ro, Yuseong-gu, Daejeon 305-343, Korea ¹Korea Electric Power Corporation Research Institute, 105, Munji-ro, Yuseong-gu, Daejeon 305-760, Korea

Korean Journal of Chemical Engineering, January 2016, 33(1), 73-79(7), 10.1007/s11814-015-0091-1

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Abstract

Korea Institute of Energy Research (KIER) and Korea Electric Power Corporation Research Institute (KEPCORI) have been developing a CO2 capture technology using dry sorbents. In this study, KEP-CO2P1, a potassium-based dry sorbent manufactured by a spray-drying method, was used. We employed a bench-scale dry-sorbent CO2 capture fluidized-bed process capable of capturing 0.5 ton CO2/day at most. We investigated the sorbent performance in continuous operation mode with solid circulation between a fast fluidized-bed-type carbonator and a bubbling fluidizedbed-type regenerator. We used a slip stream of a real flue gas from 2MWe coal-fired circulating fluidized-bed (CFB) power facilities installed at KIER. Throughout more than 50 hours of continuous operation, the temperature of the carbonator was maintained around 70-80 oC using a jacket-type heat exchanger, while that of the regenerator was kept above 180 oC using an electric furnace. The differential pressure of both the carbonator and regenerator was maintained at a stable level. The maximum CO2 removal was greater than 90%, and the average CO2 removal was about 83% during 50 hours of continuous operation.

Keywords

CO2 Capture Dry Sorbents Fluidized-bed Process Bench-scale Unit Continuous Operation

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