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Seo, Yongwon
Advanced Clean Energy Lab.
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Continuous operation of the potassium-based dry sorbent CO2 capture process with two fluidized-bed reactors

Author(s)
Yi, Chang-KeunJo, Sung-HoSeo, YongwonLee, Joong-BeomRyu, Chong-Kul
Issued Date
2007-04
DOI
10.1016/S1750-5836(07)00014-X
URI
https://scholarworks.unist.ac.kr/handle/201301/8078
Fulltext
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=34250718745
Citation
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL, v.1, no.1, pp.31 - 36
Abstract
The dry sorbent CO2 capture process is an advanced concept to efficiently remove CO2 from flue gas with two fluidized-bed reactors. This paper summarizes the results of performance of the two fluidized-bed reactors in the continuous solid circulation mode to investigate the feasibility of using potassium carbonate-based solid sorbent (Sorb KX35). The parameters such as gas velocity, solid circulation, carbonation temperature, and water vapor content were investigated during several continuous operations of two fluidized-bed reactors. The CO2 removal increased as gas velocity was decreased and as solid circulation rate was increased. The CO2 removal ranged from 26% to 73% was rather sensitive to the water vapor content among other parameters. A 20 h continuous operation conducted in a bench scale fast fluidized-bed reactor system indicated that the spray-dried potassium-based sorbent, Sorb KX35 having superior attrition resistance and high bulk density, had a promising CO2 removal capacity of 50-73% at steady state and was able to regenerate and reuse. The results from this work are good enough to prove the concept of the dry sorbent CO2 capture process to be one of viable methods for capturing CO2 from dilute flue gas of fossil fuel-fired power plants.
Publisher
ELSEVIER SCI LTD
ISSN
1750-5836
Keyword (Author)
CO2 capturedry sorbentfluidized-bed potassium carbonateCO2 removal
Keyword
CARBON-DIOXIDE

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