Specifics of Electrostatic Precipitation of Fly Ash from Small-Scale Fossil Fuel Combustion

This paper investigates the removal efficiency of a honeycomb electrostatic precipitator (ESP) applied to control particulate matter (PM) emissions from small-scale boiler with combustion lignite and hard coal. The specifics precipitation boilers are discussed, design principles for relevant ESPs presented used. ion-induced nucleation sulfuric acid occurred, causing drastic penetration 19 nm particles through ESP. Despite this, overall collection was sufficient meet EU’s Ecodesign Directive requirements. Back corona not detected. optimal ESP performance is defined further parameters: current density 0.5 mA/m2 at an electric field strength about 2.7 × 105 V/m; minimal specific collecting area (SCA) 60 m2/(m3/s); Nt-product 4.5 1014 s/m3. Such parameters should ensure adequate PM any type similar characteristics. composition collected fly ash analysed, method utilisation proposed. research may be helpful designing units fossil fuel combustion.