Abstract
In recent years, pulsed energization has become a viable means to improve the performance of electrostatic precipitators, especially for high resistivity dust. Due to the further development of electronic components, reliable and cost-effective pulsed T/R sets are now commercially available from several suppliers. Fläkt's experience, based on field tests since 1980 in pilot plants and full-scale installations, has shown that it is possible to reduce outlet emission by as much as 75%, compared to conventional energization. The results also show considerable savings in power ranging from 50 to 90% in several cases. This paper reviews the basic concepts of two different energization methods as well as experience from full-scale commercial installations.
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