Electrostatic precipitator handbook
The operation of oil- and coal-fired power stations in our environmentally conscious era requires the efficient removal of dust from the exhaust gases. Electrostatic precipitators accomplish this task successfully. This book aims to provide a practical 'hands on' treatment of electrostatic precipitation for the power station engineer. It is also an excellent introduction to the subject for students. The first six chapters explain the basic principles of both tube- and parallel-plate precipitators, and the processes of dust charging and collection. There follows a discussion of the properties of dust, with emphasis on the problems encountered with both high- and low-resistivity dusts. Later chapters deal with electrode design and alignment, and the question of safety for power station personnel. Finally, strategies for the maintenance of existing equipment and the procurement of new precipitators are evaluated.
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applied potential average back-ionization bag-filters calculated cause charge clean coal collected dust collecting efficiency collecting electrode corona current corona discharge cost cross-section current density curves cyclone damper decrease depends diameter direct current discharge electrode discharge wire drift-speed duct ductwork dust particles effective migration velocity electric field electrical resistivity electrostatic precipitator emission energization filter Flakt flashover flow flow-rate gas velocity gas-stream gases gasflow holes increase inlet dust burden inside a precipitator inside the precipitator insulator ions key exchange box layer Lodge-Cottrell Ltd louvre maintenance measured molecule monocoque needed nozzle operating optimum outlet dust burden outlet zone output pilot precipitator plant possible power supply precipitator inlet precipitator outlet precipitator performance precipitator's probe problem rapping interval rapping puffs rapping re-entrainment rectifiers sampling points self-shedding shaft slip space-charge specific collecting area sulphur sulphur trioxide surface switch temperature tenderer terminal velocity tests turbulence usually voltage