Investigation of Dusting Process in Centrifugal-Inertia Devices

Abstract

There were carrying-out trials of experimental dust arrester on real dust air mixture of unit for treatment of galvanic sludges into iron-oxide pigment. There was determined that in centrifugal-inertia separator the dust separation process takes place in three different working zones: swirl zone of gas-dust stream; zone of dust concentrating and solid phase’s layer formation on the body wall centrifugally; zone of particles deflection from separating zone owing to retardation of more inertial particles of finely-divided particulates or condensed phase form gas under gas stream rotation. On the base of experimental data was developed simulation model of separation process of finely-divided dust in centrifugal-inertia dust arrester and programming and computing suite for calculation of main process-dependent and design parameters of one-stage of two-stage dust arresters. Owing to decreasing of secondary dust loss in centrifugal-inertia dust arrester, was able more than 1,5 – 2 time increase separation of air-dust mixtures in common cyclone, and purification rate depending of dispersive capacity  and density of separate dust is from 75 to 98 per cents for different finely-divided aerosols of solid condensed phase.