Assessment of a model with char attrition for a bubbling atmospheric fluidized-bed combustor

Date

2004-05-01

Author

Gogebakan, Y
Selçuk, Nevin

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A comprehensive model, previously developed and tested for prediction of behavior of continuous fluidized-bed combustors, is extended to incorporate char attrition and is applied to the simulation of a 0.3 MegaWatt (MW) atmospheric bubbling fluidized-bed combustor burning lignites with high Volatile Matter/Fixed Carbon (VM/FC) ratios in their own ashes. The effect of this incorporation is assessed by comparing the predictions of the model with and without attrition with measurements. Favorable comparisons obtained between predicted and measured temperature and concentration profiles and carryover char particle size distributions imply that these parameters are not sensitive to char attrition for lignites and the operating conditions under consideration. However, comparisons between combustion efficiencies predicted with and without char attrition and those obtained from measurements show that consideration of char attrition is essential for accurate prediction of combustion efficiencies.

Subject Keywords

Lignite, Char attrition, Fluidized-bed combustion

URI

https://hdl.handle.net/11511/31048

Journal

COMBUSTION SCIENCE AND TECHNOLOGY

DOI

https://doi.org/10.1080/00102200490428413

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

Y. Gogebakan and N. Selçuk, “Assessment of a model with char attrition for a bubbling atmospheric fluidized-bed combustor,” COMBUSTION SCIENCE AND TECHNOLOGY, pp. 799–818, 2004, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31048.