Particle separation in cocurrent gas-liquid flow-Venturi scrubber

3 Particle separation in cocurrent gas-liquid flow-Venturi scrubber 

We have observed in Section 6.3.1.4 that particles from flowing air streams can be collected by stationary fibers in a filter bed by inertial impaction. There are additional 

Flagan and Seinfeld (1988) have illustrated a general procedure for developing an expression for the differential change in A/(rp, i , r max), the total number density of 

Here Ug,throat is the gas velocity at the throat in cm/s and (Qe/Qg) hus the units of Uter/m. An earlier result by Calvert et al. has been illustrated by Wark and Warner (1976) for total efficiency estimation if APgas is known  

and Qg are the volumetric liquid and gas flow rates, respectively, in m /s ddr aud Udr are the diameter and velocity of the drop falling in a gas moving with a velocity Vg, so that (Vg-Udr) is the relative velocity between the drop and the gas q is the particle collection efficiency of an individual droplet, somewhat analogous to the single fiber efficiency E,s due to inertial impaction, (6.3.42a). Calvert (1984) has obtained the following expression for the overall Venturi scrubber efficiency Ep after incorporating an appropriate expression for the individual drop collection efficiency q  

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