Role of Electrostatic Precipitator in Industry

Electrostatic Precipitators (ESP) are most important device used to control the pollution by collecting dust particles present on flue gases. In power plants, Coal used in Indian thermal power stations is of inferior grade, at power plant flue gas is often treated with a series of chemical process and scrubbers, having low calorific value (3500-4500)kcal/kg and high ash content due to drift origin. However, Indian power coal ash is specially known by its refractory in nature and low sulphur (below 0.5%) and alkalis (less than 1.5%) contents. The maximum thermal power plants are used for controlling fly ash from ESP. In the present paper various types are attempts to analyze the causes of problems in terms of ash; a special emphasis was given to correlate the different forms of sulphur on E.S.P. performance. In this paper we discuss some methods which are being applied in Thermal Power plant to improve the collection efficiencies of ESP.