Influence of hydration by steam/superheating on the CO2 capture performance and physical properties of CaO-based particles

Yin, Junjun, Qin, Changlei, An, Hui, Veeraragavan, Ananthanarayanan and Feng, Bo (2013) Influence of hydration by steam/superheating on the CO2 capture performance and physical properties of CaO-based particles. Industrial and Engineering Chemistry Research, 52 51: 18215-18224. doi:10.1021/ie403080c


Author Yin, Junjun
Qin, Changlei
An, Hui
Veeraragavan, Ananthanarayanan
Feng, Bo
Title Influence of hydration by steam/superheating on the CO2 capture performance and physical properties of CaO-based particles
Formatted title
Influence of hydration by steam/superheating on the CO2 capture performance and physical properties of CaO-based particles
Journal name Industrial and Engineering Chemistry Research   Check publisher's open access policy
ISSN 0888-5885
1520-5045
Publication date 2013-12-26
Sub-type Article (original research)
DOI 10.1021/ie403080c
Volume 52
Issue 51
Start page 18215
End page 18224
Total pages 10
Place of publication Washington, DC, United States
Publisher American Chemical Society
Collection year 2014
Language eng
Formatted abstract
This paper studied the effect of the cyclic carbonation/calcination reactions and the hydration-based reactivation methods (i.e., hydration by steam and hydration by superheating) on the CO2 capture performance and physical properties of pelletized CaO-based sorbent particles in a fixed bed reactor. Hydration by superheating consisted of first a steam hydration process in 15 vol % H2O at 300 °C and a subsequent superheating process in 100% CO2 at 550 °C. It was found that during the successive carbonation/calcination cycles, the chemical activity of CaO sorbent particles fell rapidly while their physical properties (i.e., weight loss after rotations and compressive strength) were largely maintained. In addition, both hydration by steam and hydration by superheating were effective in reactivating the chemical activity of CaO-based pellets to nearly the same level. Hydration by steam, however, significantly weakened the physical strength of CaO-based pellets whereas hydration by superheating largely maintained their mechanical properties over 20 cycles. The positive effect of hydration by superheating was ascribed to the carbonation of Ca(OH)2 during the superheating step at 550 °C.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
School of Chemical Engineering Publications
Official 2014 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
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Created: Fri, 10 Jan 2014, 14:29:41 EST by Anand Veeraragavan on behalf of School of Mechanical and Mining Engineering