INFLUENCE OF ELECTRODE CONFIGURATION AND PARAMETERS ON ELECTRIC FIELD AND DUST REMOVAL PERFORMANCE OF POROUS ELECTRODE ESP
The industrial ESP is affected by the problems of anti-corona and low collection efficiency on ultrafine particles,resulting in its unstable operation performance for ultra-low emission.Adopting the porous dust collecting plate and optimizing the electrode configurations and parameters can all alleviate the above problems to ensure the efficient and stable operation of ESP.Through the COMSOL Multiphysics simulation test,the effects of different plate-plate distance,wire-wire distance,plate shape,and line shape on electric field and dust removal performance were studied.The results showed that 500 mm plate-plate distance was conducive for high specific resistance collection.When the optimum line spacing was 0.5 to 1 times of the plate-plate spacing,the average current density on the surface of the plate was the highest.The four kinds of porous plates all had a slowing effect on the anti-corona phenomenon,and the cross-porous plate had the largest dust field strength and the best dust removal performance.Adding a plate in the cavity increased the collection efficiency of fine particles(0.01 μm to 0.1 μm)by 16％.The dust removal performance of the new fishbone line was better than other lines.When the cross-hole dust collecting plate was matched with the new fishbone line,the dust field strength in the dust collecting area was the highest,and its theoretical effective driving speed of particulate matter was 47％higher than other electrode configuration,which reduced investment and running cost of the ESP.The research results can provide a reference for the design and application of PDCE-ESP for ultra-low emission.
PDCE-ESPselectrode configurationelectric field intensitydust removal performancenumerical simulation
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