Activation of Ca-Based CO₂ Sorbent by Hydration in Repetitive Calcination-Carbonation Reactions

Abstract:

The carbonation characteristics of Ca-based CO₂ absorbent hydrated by water were investigated as part of a multi-cycle performance study, and the change of the microstructure, pore radius and specific surface area of the absorbent with the number of cycles was researched. The results show that, conversion of sorbent hydrated by water is enhanced to 85% after 10 cycle, significantly higher than the 20% achieved by dry limestone cycle. Because the specific surface area is greatly enhanced, as well as the distributions of pore radius is improved in the hydration process, which develop an effective way to retain the fine qualities of Ca-based CO₂ sorbents in a repetitive calcination-carbonation process.

• Periodical: Applied Mechanics and Materials (Volumes 587-589)
• Pages: 755-760
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.587-589.755
• Online since: July 2014
• Authors: Yu Qing Zhao*, Chun Zhen Qiao, Wei Jiao Chen
• Keywords: Activation, CO₂ Absorbent, Hydration

References

[1] Curran, G. P., Fink, C. E., Gorin, E. CO2 Acceptor Gasification Process：studies of acceptor properties, Adv. Chem. Ser. 1967, 69: 141-165.

DOI: 10.1021/ba-1967-0069.ch010

[2] K. Johnsen, H.J. Ryu, J.R. Grace, et al. Sorption-enhanced steam reforming of methane in a fluidized bed reactor with dolomite as CO2-acceptor. Chemical Engineering Science, 2006, 61: 1195 – 1202.

DOI: 10.1016/j.ces.2005.08.022

[3] Frank Zeman. Effect of steam hydration on performance of lime sorbent for CO2 capture. International Journal of Greenhouse Gas Control 2, 2008: 203-209.

DOI: 10.1016/s1750-5836(07)00115-6

[4] A. Silaban, D.P. Harrison. High temperature capture of carbon dioxide: characteristics of the reversible reaction between CaO(s) and CO2(g). Chem. Eng. Comm., 1995, 137: 177-190.

DOI: 10.1080/00986449508936375

[5] A. Silaban, M. Narcida, D.P. Harrison. Characteristics of the reversible reaction between CO2(g) and calcined dolomite. Chem. Eng. Comm., 1996, 146: 149-162.

DOI: 10.1080/00986449608936487

[6] QIAO Chunzhen, XIAO Yunhan, TIAN Wendong, YANG Shaojun. Repetitive calcination-carbonation capability of Ca-based CO2 absorbent. Journal of Chemical Industry and Engineering, 2006, 57(12): 2953-2958.

[7] Abanades JC, Alvarez D. Conversion limits in the reaction of CO2 with lime. Energy Fuels 2003, 17: 308-15.

DOI: 10.1021/ef020152a

[8] Salvador C, Lu D, Antliony E J, et al. Enhancement of CaO for CO2 capture in an FBC environment [J]. Chemical Engineering Journal, 2003, 96(1-3): 187-195.

DOI: 10.1016/j.cej.2003.08.011

[9] A. Silaban, M. Narcida, D.P. Harrison. Characteristics of the reversible reaction between CO2(g) and calcined dolomite. Chem. Eng. Comm., 1996, 146: 149-162.

DOI: 10.1080/00986449608936487

[10] Juan Carlos Abanades. The maximum capture efficiency of CO2 using a carbonation /calcination cycle of CaO/ CaCO3. Chemical Engineering Journal. 2002, 90: 303-306.

DOI: 10.1016/s1385-8947(02)00126-2

[11] LI Yingjie, ZHAO Changsui. Carbonation Characterist -ics in Calcium-sorbents Cyclic Calcination/Carbo- nation Reaction Process. Proceedings of the CSEE, 2008, 28(2), 55-60.

[12] Li Yingjie, Zhao Changsui. Carbonation characteristics in calcium-sorbents cyclic calcination /carbonation reaction process[J]. Proceedings of the CSEE, 2008, 28(2): 55 -60.

[13] QIAO Chunzhen, WANG Baoli, XIAO Yunhan. Activity decline of Ca－based CO2 absorbent in repetitive calcination- carbonation. Journal of Chemical Industry and Engineering, 2010, 61(3), 720-724.

[14] J. Blamey, E.J. Anthony, J. Wang, P.S. Fennell. The calcium looping cycle for large-scale CO2 capture. Progress in Energy and Combustion Science, 2010, 36 : 260–279.

DOI: 10.1016/j.pecs.2009.10.001

[15] D. Dasgupta, K. Mondal, T. Wiltowski. Robust, high reactivity and enhanced capacity carbon dioxide removal agents for hydrogen production applications[J]. International Journal of Hydrogen Energy, 2008, (33) : 303-311.

DOI: 10.1016/j.ijhydene.2007.07.015

[16] Marquis DL. Reactivation of spent CFB limestone by hydration MASc thesis, University of New Brunswick. Fredericton, New Brunswick. Canada. (1992).

[17] Karin Laursen, Wenli Duo, John R. Grace et al. Characterization of steam reactivation mechanisms in limestones and spent calcium sorbents[J]. Fuel, 2001, 80: 1293-1306.

DOI: 10.1016/s0016-2361(01)00011-4

[18] Frank Zeman. Effect of steam hydration on performance of lime sorbent for CO2 capture[J]. International Journal of Greenhouse Gas Control, 2008, 2: 203-209.

DOI: 10.1016/s1750-5836(07)00115-6

[19] Sun P, Grace JR, Lim CJ, Anthony EJ. Investigation of attempts to improve cyclic CO2 capture by sorbent hydration and modification. Industrial & Engineering Chemistry Research 2008; 47(6): 2024–32.

DOI: 10.1021/ie070335q

[20] Yin Wang, Shiying Lin, Yoshizo Suzuki. Effect of CaO content on hydration rates of Ca-based sorbents at high temperature. Fuel Processing Technology 2008, 89: 220 – 226.

DOI: 10.1016/j.fuproc.2007.09.009