Sulfur capture for fluidized-bed combustion of high-sulfur content lignites |
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Authors: | Hakan Altindag Yusuf Gogebakan Nevin Seluk |
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Affiliation: | Department of Chemical Engineering, Middle East Technical University, Ankara 06531, Turkey |
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Abstract: | Sulfur release and capture behavior of lignites with highly combustible sulfur-contents were investigated by extending a previously-developed comprehensive model to incorporate sulfur retention. The predictive performance of the model was tested by comparing the model predictions with on-line concentration measurements of O2, CO2, CO and SO2. Favorable comparisons are obtained between the predicted and measured concentrations of gaseous species along the combustor. Results show that freeboard sulfur-capture is enhanced significantly with recycling of elutriated sorbent particles as the sulfur release to the freeboard is significant for fuels rich in combustible sulfur. |
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Keywords: | Sulfur retention Fluidized bed combustion Lignite Recycle |
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