ANALYSIS DUST GAS CLEANING TECHNOLOGICAL PROCESSES

Abstract

The exhaust gas cleaning process is a multistep system where the first step is usually fly ash separation. Common technologies used for dust separation from exhaust gas include cyclones, electrostatic precipitators, and filters.  Gas cleaning devices vary in their removal efficiencies, but almost invariably they are more efficient at removing particulate, rather than aerosol size range material. Even so, the least efficient device for removing small particle sizes, the gravity settling chamber, still plays an important role in emission control. When the gas stream to be cleaned has only large particles present which can be effectively removed by the device, then this device alone represents an inexpensive method of control. When the particle size range to be collected is wider than this, and a dry cyclone is to be used for final particle collection, very large particles. Common technologies used for dust separation from exhaust gas include cyclones, electrostatic precipitators, and filters.