Journal of Power and Energy Engineering

Volume 3, Issue 4 (April 2015)

ISSN Print: 2327-588X   ISSN Online: 2327-5901

Google-based Impact Factor: 0.88  Citations  

Evolution of the Surface Area of Limestone during Calcination and Sintering

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DOI: 10.4236/jpee.2015.34009    5,805 Downloads   6,424 Views  Citations
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ABSTRACT

The calcination reaction of limestone is always companied by sintering of the calcined product. In addition, accelerated sintering rates and a reduced specific surface area are observed in the presence of steam and carbon dioxide. To simulate the change of surface area and the porosity of limestone samples in a simultaneous calcination and sintering process, a combined model based on both a sintering model and a calcination model is established. The calcination model, which predicts calcination conversion as a function of time, is based on the initial properties of the sorbent. The sintering model is according to the German and Munir model in which the main transport mechanism is supposed to be lattice diffusion. In a flow reactor, the surface area value and calcination rate of limestone in the presence of steam and CO2 are also described by the combined model with modified parameters.

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Liu, Y. and Yang, Y. (2015) Evolution of the Surface Area of Limestone during Calcination and Sintering. Journal of Power and Energy Engineering, 3, 56-62. doi: 10.4236/jpee.2015.34009.

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