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Reactive separation of CO 2 using pressure pelletised limestone

Author

Listed:
  • Himanshu Gupta
  • Mahesh V. Iyer
  • Bartev B. Sakadjian
  • Liang-Shih Fan

Abstract

Calcium oxide powder derived by the calcination of mesoporous calcium carbonate provides a higher conversion towards carbonation compared to calcium oxide derived from naturally occurring limestone and hydrated lime. Compaction of this high reactivity sorbent was investigated for its use in CO2 separation from flue gas. It was observed that compaction preserved the porosity of the powder. The pellets were able to attain 50–80% conversion towards carbonation over three cycles. The rate and extent of carbonation reaction reduces with increasing pellet thickness. The effect of compaction load and CO2 concentration did not show any appreciable difference in the rate of carbonation. Whereas the mesoporous calcium carbonate pellet showed appreciable drop in carbonation conversion, the pellets made from other precursors, such as natural limestone and hydrated lime, maintained a higher degree of reactivity over three cycles.

Suggested Citation

  • Himanshu Gupta & Mahesh V. Iyer & Bartev B. Sakadjian & Liang-Shih Fan, 2004. "Reactive separation of CO 2 using pressure pelletised limestone," International Journal of Environmental Technology and Management, Inderscience Enterprises Ltd, vol. 4(1/2), pages 3-20.
    • Handle: RePEc:ids:ijetma:v:4:y:2004:i:1/2:p:3-20
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