Wet electrostatic scrubbers for the abatement of submicronic particulate

摘要: Abstract Water electrostatic scrubber (WES) represents an alternative technology for the abatement of that submicronic fraction particulate – belonging to so-called Greenfield gap usually hardly captured with other cleaning techniques. The promising potentialities WES are recognized by scientific and industrial communities, but design this kind reactor is far from being optimized. This work reports a mathematical model evaluate particle removal efficiency in wet scrubbers. used find out optimal working condition units, through maximization collection function different process parameters: contact time, specific water consumption, water/gas relative velocity, size charge sprayed droplets. has been validated comparison experimental data available literature, both charged uncharged Then it applied reference case study obtain generalizable results. shows optimization micronic particles follows criteria. For particles, increases higher small effect droplet diameter moderate increase charge. On contrary, gap, velocity plays secondary role capture mechanisms, while substantial improving level reducing observed. With actual performances spraying charging devices, predicts as high 99.5% can be reliably obtained few seconds consumption 100 ml/m 3 adopting diameters around 100 μm mass ratio 1 3 mC/kg, corresponding equal 10–30% Rayleigh limit.