Abstract
Electrostatic precipitators (ESP) have been widely used in different fields such as thermal power plants, cement plants, production of constructive materials, chemical industry, fertilizer production, . . . due to their advantagesover other dust collector systems. One of the parameters which influences on dust removing efficiency of the ESP devices is the speed and velocity distribution of the polluted gas in the collecting chamber. This paper presents the research results of improving the uniform distribution of the gas velocity in the collecting chamber of ESP using CFD (Computational Fluid Dynamics) simulation. The simulation results showed that as the dispersion plate was installed at the gas inlet of the collecting chamber the velocity distribution of gas flow was more uniform and its direction was more stable towards the outlet. In addition, the dispersion plate also improved the flow stability at different flow rates and the smaller hole diameter on the dispersion plate was better for the velocity distribution and direction in the flow. The research results provide an approach foroptimum design of a ESP with high collection efficiency.
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