Investigation of the performance of bipolar transverse plate ESP in the sintering flue control

In order to improve the particle collection efficiency of the electrostatic precipitator (ESP), a transverse plate ESP with bipolar discharge electrodes is proposed. The simulations of the velocity distribution have shown that when the inlet velocity is 1 m/s, within the range of 40 mm from electrod...

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Bibliographic Details
Published in:Journal of electrostatics 2015-08, Vol.76, p.18-23
Main Authors: Xiang, Xiaodong, Chang, Yufeng, Nie, Yantao
Format: Article
Language:English
Subjects:
Collection
Dust
Dust control
Dust penetration
Electrodes
Electrostatic precipitator
Inlets
Pressure drop
Simulation
Sintering
Velocity distribution
Voltage
Voltage current characteristics
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Summary:In order to improve the particle collection efficiency of the electrostatic precipitator (ESP), a transverse plate ESP with bipolar discharge electrodes is proposed. The simulations of the velocity distribution have shown that when the inlet velocity is 1 m/s, within the range of 40 mm from electrode plate, the average velocities of windward side and leeward side are less than 0.7 m/s and 0.3 m/s respectively. It is clear that the velocity near the collection electrode plate of this bipolar ESP is much lower than that of the ordinary ESP at the same inlet velocity. This low velocity can lead to higher efficiency for fine dust collection due to the less dust re-entrainment in ESP. It is also found that the average velocities are getting lower when the distance between plates electrodes are greater than 150 mm in accordance with the simulations. The voltage current characteristics of the bipolar ESP are superior to the ordinary ESP. The pressure drop of the bipolar ESP is about 30% higher than that of the ordinary one. The dust penetration of the bipolar ESP is about 54% less than that of the ordinary ESP when the sintering dust with 25.405 μm mass median diameter is used as the test particulate under the condition of the electric field from 2.1 kV/cm to 3.2 kV/cm and the velocity from 1.0 m/s to 1.5 m/s. •A transverse plate ESP with bipolar discharge electrodes is proposed.•The velocity near the collection electrode plate of this bipolar ESP is much lower.•Bipolar transverse plate ESP has good collection effect on fine particle.
ISSN:0304-3886
1873-5738
DOI:10.1016/j.elstat.2015.04.003