A study of a wire-plate eletrostatic precipitator operating in the removal of polydispersed particles

Abstract

Performance of a wire-plate electrostatic precipitator in the removal of particles with a wide particle size distribution was evaluated. The experimental rig utilized consisted of a set of three precipitators whose dimensions could be varied. It was observed that precipitator performance increased with an increase in the gap between the collecting plates, which resulted in a substantial increase in energy consumption per volume of cleaned gas. The grade efficiency predicted by correlations from the literature did not match the experimental measurements, and a new correlation is proposed

Methodology for Performance Evaluation of Dust Control Systems with an Application to Electrostatic Precipitators

“…Through this procedure, the above-mentioned assumption has been found valid for all control systems and fractional efficiency prediction relations tested so far (Economopoulou andEconomopoulos 2002a, 2002b;Economopoulou andHarrison 2007a, 2007b) and the same is found in the present work to be the case with ESPs and the Nobrega et al (2004) Nobrega et al (2004) and optimally fitted by lognormal distribution functions.…”

“…In this example the system simulated is an ESP and its fractional efficiencies are predicted by the Nobrega et al (2004) formulation (see below).…”

“…For this purpose, several theoretical formulations have been developed over the years for predicting the fractional collection efficiency of precipitators and optimizing their performance, such as those by Deutsch (1922), Cooperman (1971), Leonard et al (1982), Zhibin and Guoquan (1994), and Nobrega et al (2004). From these models, only few address the effects of particle accumulation at the discharging electrodes and at the collection plates, a phenomenon known to influence adversely the performance of ESP.…”

“…Multimodal inlet particle distributions can be accommodated additively. This methodology is applied to electrostatic precipitator systems (ESPs), with the Nobrega et al (2004) model selected for predicting their fractional efficiencies. As such, the present methodology extends the use of the inventory methodology to ESP-controlled sources and, in addition, it provides a generalized basis for covering other types of control systems with any fractional efficiency formulation considered appropriate.…”

Application of Electrostatic Precipitator in Collection of Smoke Aerosol Particles from Wood Combustion

“…Most of the devices are operated in dry condition where the collected particles can be removed by rapping or hammering. Because aerosol particle resulted from burning of rubber-wood used in rubber sheet smoking process contain sticky tar (Kalasee et al, 2003;Nóbrega et al, 2004;Podlinski et al, 2006;Intra et al, 2007), it is then not possible to remove them effectively by mechanical methods. A better means to remove the collected particles is then required.…”