Abstract

The electrostatic precipitator (ESP) numerical model developed by Author does a better job of qualitatively predicting influence of flow pattern in electrostatics precipitators on performance. The results show that the re-entrainment of falling dust results in the dust load in the lower zone of a precipitator increasing compared to the upper zone as flow progresses through a precipitator and the higher efficiencies can be achieved by using some special non-uniform inlet and outlet gas velocity distribution than that of uniform gas velocity distribution. In this paper, the numerical model is applied to determine the mass centers of dust response to the variations in gas velocity distributions across the full scale ESP entrance and exit. It studies how the skew gas distribution affects dust loading centers and gives a physical explanation for the improved performance with controlled non-uniform inlet and outlet gas distributions.

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