Gas Cleaning with Dust Collection Device with Arc-Shaped Elements

Abstract

To solve the issue of gas purification, a new dust collecting device with arc-shaped elements has been proposed. A feature of the device is noted, which consists in the capability of changing the flow area at its inlet by varying the number of rows of arc-shaped elements and their height, which makes it possible to select the inlet gas velocity at which the separation efficiency is maximum. The results of numerical modeling of the process of capturing solid particles from gas for various design solutions and process parameters of the unit are presented. It has been found that the high efficiency of a device with arc-shaped elements at a low pressure drop (no more than 380 Pa) is achieved by creating an arranged wave-like structure of the gas and dust flow, on the basis of which the centrifugal forces of high values arise at relatively low gas velocities at the inlet (0.25–2 m/s). A conclusion was made on the optimal design of the device, which has a height of arc-shaped elements of 250 mm and the number of their rows is 12 pcs.