Improving the modelling of electrostatic precipitators

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Dr. Kiss István
Department of Electric Power Engineering

Particulate matter is one of the problems of industrial air pollution that needs to be controlled. This is not a problem associated with a few industries, but pervasive across a wide variety of industries and most of them have responded with various control devices. One of the main particles collecting devices used today, electrostatic precipitators (ESPs) are among the most commonly used. They can operate with large volume of gas with a wide range of inlet temperatures, pressures, dust volumes and acid gas conditions. They can collect a wide range of particle sizes in a dry and a wet state. For many industries, the collection efficiency can reach 99%. Efficiency collection is the main consideration of the design of ESP, but unfortunately, there is a number of operating parameters can adversely affect the collection efficiency of the precipitator. The resistivity of the dust, particulate surface properties, particle size, particle shape, and sulfur content contained in the coal are mentioned as the parameters which affects collection efficiency. Among the parameters there are significant parameters that strongly influence the precipitation process. One of them is dust resistivity and there are various measurement methods of the dust resistance.


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