IMPROVEMENT OF CaO-BASED SORBENT PERFORMANCE FOR CO2 LOOPING CYCLES

Abstract

This paper presents research on CO2 capture by lime-based looping cycles. This is a new and promising technology that may help in mitigation of global warming and climate change caused primarily by the use of fossil fuels. The intensity of the anticipated changes urgently requires solutions such as the developing technologies for CO2 capture, especially those based on CaO looping cycles. This technology is at the pilot plant demonstration stage and there are still significant challenges that require solutions. The technology is based on a dual fluidized bed reactor which contains a carbonator - a unit for CO2 capture, and a calciner - a unit for CaO regeneration. The major technology components are well known from other technologies and easily applicable. However, even though CaO is a very good candidate as a solid CO2 carrier, its performance in a practical system still has significant limitations. Thus, research on CaO performance is critical and this paper discusses some of the more important problems and potential solutions that are being examined at CETC-O.

Keywords

Dates

  • Submission Date2008-10-18
  • Revision Date2008-10-28
  • Acceptance Date2008-12-26

DOI Reference

10.2298/TSCI0901089M

References

  1. Metz, B., et al., Special Report on Carbon Dioxide Capture and Storage, Intergovernmental Panel on Climate Change, Cambridge University Press, New York, USA, 2005
  2. Herzog, H., What Future for Carbon Capture and Sequestration? Environmental Science and Technology, 35 (2001), 7 pp. 148A-153A
  3. Bachu, S., CO2 Storage in Geological Media: Role, Means, Status, and Barriers to Deployment, Progress in Energy and Combustion Science, 34 (2008), 2, pp. 254-273
  4. Yang, H., et al., Progress in Carbon Dioxide Separation and Capture: A Review, Journal of Environmental Sciences, 20 (2008), 1, pp. 14-27
  5. Alie, C., et al., Simulation of CO2 Capture Using MEA Scrubbing: A Flowsheet Decomposition Method, Energy Conversion and Management, 46 (2005), 3, pp. 475-487
  6. Singh, D., et al., Techno-Economic Study of CO2 Capture from an Existing Coal-Fired Power Plant: MEA Scrubbing vs. O2/CO2 Recycle Combustion, Energy Conversion and Management, 44 (2003), 19, pp. 3073-3091
  7. Anthony, E. J., Solid Looping Cycles: A New Technology for Coal Conversion, Industrial and Engineering Chemistry Research, 47 (2008), 6, pp. 1747-1754
  8. Pennline, H. W., et al., Progress in Carbon Dioxide Capture and Separation Research for Gasification-Based Power Generation Point Sources, Fuel Processing Technology, 89 (2008), 9, pp. 897-907
  9. Tan, Y., et al., Combustion Characteristics of Coal in a Mixture of Oxygen and Recycled Flue Gas, Fuel, 85 (2006), 4, pp. 507-512
  10. Jia, L., et al., Experimental Study of Oxy-Fuel Combustion and Sulphur Capture in a Mini-CFBC, Energy and Fuels, 21 (2007), 6, pp. 3160-3164
  11. Buhre, B. J. P., et al., Oxy-Fuel Combustion Technology for Coal-Fired Power Generation, Progress in Energy and Combustion Science, 31 (2005), 4, pp. 283-307
  12. Hossain, M. M., de Lasa, H. I., Chemical-Looping Combustion (CLC) for Inherent CO2 Separations - A Review, Chemical Engineering Science, 63 (2009), 18, pp. 4433-4451
Volume 13, Issue 1, Pages89 -104