THEORETICAL-ANALYSIS OF DUST REMOVAL FROM GAS IMPINGING ON A CONFINEDLIQUID SURFACE

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 in dicates that for a specific dust size there exists a certain nozzle si ze below which die dust is removed completely. The dust-removal effici ency eta depends on the impaction number N(I), die vertical gas veloci ty at the center of the nozzle exit lambda, and the nozzle half-width r according to the equation lambdaeta + [2/(pi - 2)](1 -lambda)(sin-1 eta - eta) = N(I)[(1/r) - eta].