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TECHNICAL PAPERS: Fuels and Combustion Technologies (FACT)

Prediction of Sorbent Performance in a Circulating Fluidized Bed Boiler Based on Petrographic Properties

[+] Author and Article Information
Peter L. Rozelle, Alan W. Scaroni

Department of Energy and Geo-Environmental Engineering, The Pennsylvania State University, 110 Hosler Building, University Park, PA 16802

Sarma V. Pisupati1

Department of Energy and Geo-Environmental Engineering, The Pennsylvania State University, 110 Hosler Building, University Park, PA 16802spisupati@psu.edu

1

Corresponding author.

J. Eng. Gas Turbines Power 129(2), 565-571 (Aug 08, 2006) (7 pages) doi:10.1115/1.2431388 History: Received July 26, 2005; Revised August 08, 2006

A method for prediction of sorbent consumption is presented here and has been developed based on plant operating data for a boiler in which several limestone and dolostone products were tested under similar firing conditions. The method considers the characteristic partitioning of calcium and sulfur between the flyash and bottom ash stream for the boiler, the feed particle size distribution of the sorbent, and petrographic properties of the sorbents. The predictions of sorbent usage were compared to plant operating data for five sorbents, of two distinct petrographic types. The plant operating data used featured full load operation. The five sorbents tested were all from Pennsylvania, and each contained greater than 40wt.% CaO. In four of the five cases, the predicted sorbent usage was within 10wt.% of the average full load sorbent usage by the boiler.

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Copyright © 2007 by American Society of Mechanical Engineers
Topics: Sorbents , Boilers
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References

Figures

Grahic Jump Location
Figure 2

Comparison of predicted sorbent requirement with measured sorbent requirements (individual DCS readings)

Grahic Jump Location
Figure 3

Comparison of predicted sorbent requirement with measured sorbent requirements (mean values)

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Figure 1

CFB boiler ash stream partition curve

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