Abstract
One problem in the industrial dedusting process is the removal of fine particles, such as PM2.5. The gas flow features and subsequent particle behavior in a designed baffled deduster channel were numerically investigated in this study. By means of the coupling of computational fluid dynamics (CFD) and discrete element method (DEM), the key fluid flow patterns, vortex characteristics, and particle behaviors around the baffles were successfully captured. Effects of the baffle inclined angle on the velocity field, pressure drop, and vortex characteristics were analyzed. The results showed that the “dead zone” with low flow velocity was significantly improved with the baffle inclined angle approaching 90°. In addition, small-size particles were found to tend to enter the vortex region while large-size particles were more likely to collide with the walls or baffles. The outcome would provide references and inspirations for the development of novel dedusting technologies.
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