Rapping Strategy and Electric Field Characteristics of ESP in a Power Plant

The electric field operating and rapping parameters of 1# Electrostatic Precipitators (ESP) had been monitored and analysed in a thermal power company. There were five electric fields in the ESP. The rapping time of 1# ESP was 150 seconds. The time interval when the rapping was stopped increased sequentially from the first to the fifth electrical field, and the neighbouring two electric fields did not overlap each other. The operating voltage in 1# ESP also went up sequentially from the first to the fifth electrical field. The secondary voltage and current of each electric field was closely related to the rapping interval. The total energy consumption was suggested to be 26.6-29 kW to keep the dust emission under 20 mg/Nm3. Keywords—rapping parameters; secondary voltage and current; ESP; energy consumption component;