Abstract
Impingement of dust-laden gas on a confined liquid surface is analysed theoretically by assuming negligible viscous effect of the gas and no interaction of dust movement with the gas flow field. The analysis indicates that for a specific dust size there exists a certain nozzle size below which the dust is removed completely. The dust-removal efficiency η depends on the impaction number N I , the vertical gas velocity at the center of the nozzle exit λ, and the nozzle halfwidth r according to the equation λη + [ 2 (π − 2) ](1 − λ)(sin −1 η − η) = N I[( 1 r ) − η] .
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