The
work herein describes a novel technique, a rotating packed bed (RPB)
combined with a charged device, to remove fine particles from gas
steam. Experiments were carried out to investigate the effects of
different operating conditions, including the packing type, packing
thickness, rotation speed, gas–liquid volumetric ratio, initial
fine particle concentration, and voltage, on the removal efficiency
of fine particles from a gas stream. Results show that total removal
efficiencies of fine particles and particles with a size of less than
2.5 μm (PM2.5) can reach up to 99 and 96%, respectively,
under the operating conditions of packing thickness of 60 mm, rotation
speed of 1000 rpm, gas–liquid volumetric flow ratio of 400,
voltage of 40 kV, and use of a fine metal gauze packing. In addition,
a correlation to predict PM2.5 removal efficiency was established,
and results show that the predicted values of outlet PM2.5 concentrations are in agreement with experimental data, with deviations
of ±20%. This work demonstrates that the removal process of fine
particles has a low pressure drop and higher removal efficiency of
fine particles. Consequently, it provides a fast and efficient alternative
approach for removal of fine particles from gas steam.
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