Abstract
The effect of CO2 or steam partial pressure in the regeneration of CO2 solid sorbents was studied in the two-interconnected bubbling fluidized-beds system. Potassium-based dry solid sorbents, which consisted of 35 wt% K2CO3 for CO2 sorption and 65 wt% supporters for mechanical strength, were used. To investigate the CO2 capture efficiency of the regenerated sorbent after the saturated sorbent was regenerated according to the CO2 or steam partial pressure in the regeneration, the mole percentage of CO2 in the regeneration gas was varied from 0 to 50 vol% with N2 balance and that of steam was varied from 0 to 100 vol% with N2 balance, respectively. The CO2 capture efficiency for each experimental condition was investigated for one hour steady-state operation with continuous solid circulation between a carbonator and a regenerator. The CO2 capture efficiency decreased as the partial pressure of CO2 in the fluidization gas of the regenerator increased, while it increased as that of steam increased. When 100 vol% of steam was used as the fluidization gas of the regenerator, the CO2 capture efficiency reached up to 97% and the recovered CO2 concentration in the regenerator was around 95 vol%. Those results were verified during 10-hour continuous experiment.
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References
IEA (Nobuo Tanaka, Executive Director), 2009 Edition, OECD/IEA.
B. Metz, O. Davidson, H. de Coninck, M. Loos and L. Meyer, Cambridge University Press, New York (2005).
W. Yang and J. Hoffman, Ind. Eng. Chem. Res., 48(1), 341 (2009).
Y. Liang, D. P. Harrison, R. P. Gupta, D. A. Green and W. J. McMichael, Energy Fuels, 18(2), 569 (2004).
C. K. Yi, S. H. Jo, Y. Seo, J. B. Lee and C. K. Ryu, Int. J. Greenhouse Gas Control, 1(1), 31 (2007).
Y. Seo, S. H. Jo, H. J. Ryu, D. H. Bae, C. K. Ryu and C. K. Yi, Korean J. Chem. Eng., 24(3), 457 (2007).
Y. Seo, S. H. Jo, C. K. Ryu and C. K. Yi, Chemosphere, 69(5), 712 (2007).
Y. Seo, S. H. Jo, C. K. Ryu and C. K. Yi, J. Environ. Eng., 135(6), 473 (2009).
S. C. Lee, B.Y. Choi, T. J. Lee, C.K. Ryu, Y. S. Ahn and J. C. Kim, Catal. Today, 111(3), 385 (2006).
S. C. Lee, H. J. Chae, S. J. Lee, B.Y. Choi, C. K. Yi, J. B. Lee, C. K. Ryu and J. C. Kim, Environ. Sci. Technol., 42(8), 2736 (2008).
S. C. Lee, H. J. Chae, S. J. Lee, Y.H. Park, C.K. Ryu, C.K. Yi and J. C. Kim, J. Mol. Catal. B: Enzym., 56(2), 179 (2009).
J. B. Lee, C.K. Ryu, J. I. Baek, J. H. Lee, T.H. Eom and S. H. Kim, Ind. Eng. Chem. Res., 47(13), 4465 (2008).
Y. C. Park, S.H. Jo, C.K. Ryu and C. K. Yi, Energy Procedia, 1(1), 1235 (2009a).
Y. C. Park, S. H. Jo, K.W. Park, Y. S. Park and C. K. Yi, Korean J. Chem. Eng., 26(3), 874 (2009b).
T.O. Nelson, L. J. I. Coleman, D. A. Green and R. P. Gupta, Energy Procedia, 1(1), 1305 (2009).
C. Zhao, X. Chen and C. Zhao, Chemosphere, 75(10), 1401 (2009a).
C. Zhao, X. Chen and C. Zhao, Energy Fuels, 23(9), 4683 (2009b).
C. Zhao, X. Chen and C. Zhao, Int. J. Greenhouse Gas Control, 4(4), 655 (2010).
S. Lee, T. P. Filburn, M. Gray, J.W. Park and H. J. Song, Ind. Eng. Chem. Res., 47(19), 7419 (2008).
R. Siriwardane and C. Robinson, J. Env. Eng., 135(6), 378 (2009).
X. Ma, X. Wang and C. Song, J. Am. Chem. Soc., 131(16), 5777 (2009).
D. Kunii and O. Levenspiel, Fluidization Engineering, 2nd Ed., Butterworth-Heinemann, Boston (1991).
H. J. Ryu, Y. C. Park, S. H. Jo and M. H. Park, Korean J. Chem. Eng., 25(5), 1178 (2008).
Y. C. Park, K. C. Kim, S. H. Jo, S.Y. Lee and C. K. Yi, Proceedings of 2nd Asian Conference on Innovative Energy & Environmental Chemical Engineering, Phuket, 73–76 (2010).
R. Gupta, GCEP Energy Workshops 2004, Stanford University (2004).
S.Y. Lin, T. Kiga, Y. Wang and K. Nakayama, 10th International Conference on Greenhouse Gas Technologies, Amsterdam, The Netherlands (2010).
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Kim, KC., Park, Y.C., Jo, SH. et al. The effect of CO2 or steam partial pressure in the regeneration of solid sorbents on the CO2 capture efficiency in the two-interconnected bubbling fluidized-beds system. Korean J. Chem. Eng. 28, 1986–1989 (2011). https://doi.org/10.1007/s11814-011-0054-0
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DOI: https://doi.org/10.1007/s11814-011-0054-0