Measurement of Flow Field in Cyclone Dust Collector with Internal Perforated Cylinder

Abstract

Measurements of tangential, radial, and vertical velocity components and pressure distribution in a cyclone dust collector which provides an internal perforated cylinder have been made. It is found that the tangential velocity in the cylindrical section is relatively large and almost the same as in a conventional cyclone without an internal perforated cylinder ; and the inward radial velocity is relatively small and constant at all vertical or circumferential positions between the outer and inner cylinders. It is also found that the static pressure distribution in the radial direction has a shape like a dish, and the pressure drop in the cyclone is considerably small. As a result, the dust collection efficiency was improved to 5%, and the pressure drop was decreased to about 30% compared with the conventional cyclone.