Modelling and Simulation of an Electrostatic Precipitator pp. 267-296
Authors: (Shah M. E. Haque, M. G. Rasul, M. M. K. Khan, Process Engineering & Light Metals (PELM) Centre, Faculty of Sciences, Engineering and Health, CQUniversity, Gladstone, Queensland, Australia, and others)
Abstract: Electrostatic precipitators (ESPs) are the most common, effective and reliable particulate control devices that are mainly used in power plants and other process industries. The ESP works as a cleaning device and uses electrical forces to separate the dust particles from the flue gas. A typical ESP consists of an inlet diffuser, known as inlet evase, a rectangular collection chamber and an outlet convergent duct, known as outlet evase. Perforated plates are placed inside both the inlet and outlet evase for the purpose of flow distribution. Inside the collection chamber are placed a number of discharge electrodes (DEs) and collection electrodes (CEs). Discharge electrodes are suspended vertically between two collection electrodes. While the flue gas flows through the collection area, electrostatic precipitators accomplish particle separation by the use of an electric field in three steps. At first it imparts positive or negative charges to the particles by discharge electrodes. In the second step it attracts the charged particles to oppositely charged or grounded collection electrodes. And finally it removes the collected particles by vibrating or rapping the collection electrodes or by spraying with liquid.
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