Bhatia, S. K. ; Perlmutter, D. D. (1983) Effect of the product layer on the kinetics of the CO2 - lime reaction AIChE Journal, 29 (1). pp. 79-86. ISSN 0001-1541
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/aic.690...
Related URL: http://dx.doi.org/10.1002/aic.690290111
Abstract
The kinetics of reaction between CO2 and lime is investigated in the range of 673 to 998 K with a view to examining the effects of product layer deposition and variations in the limestone calcination atmosphere. The reaction is initially rapid and chemically controlled and goes through a sudden transition to a much slower regime controlled by diffusion in the product CaCO3 layer. The magnitude of the estimated product layer diffusivity is in the range of 10-18 to 10-21 m2/s, the corresponding activation energy is 88.9 ± 3.7 kJ/mol below 688 K and 179.2 ± 7.0 kJ/mol above that temperature, suggestive of solid state diffusion. Plausible mechanisms are discussed.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Chemical Engineers. |
| ID Code: | 80738 |
| Deposited On: | 01 Feb 2012 11:43 |
| Last Modified: | 01 Feb 2012 11:43 |
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