Coal combustion feed location

In circulating fluidized bed combustors, the volatile release and combustion are important with regard to pollutants emissions, heat release patterns and the subsequent reactivity of the char particles. For coals with high volatiles content, the release of volatiles is important in the selection of the feed point location, since the time constant for volatiles release and combustion is much shorter than the char burnout time. In addition, solid mixing and rate of devolatilization determine the region of volatile release. 

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