Schematic diagram and structure diagram of electrostatic precipitation

Schematic diagram and structure diagram of electrostatic precipitation

Electrostatic precipitator is a kind of flue gas purification equipment. Its working principle is that dust particles in flue gas collide with positive and negative ions and electrons between electrodes when passing through high-voltage electrostatic field, and become charged (or charged in ion diffusion movement). Dust particles with electrons and ions move to the opposite electrode under the action of electric field force, and the dust on the electrode falls into the dust collecting hopper through vibration, so that the flue gas passing through ESP can be purified, and the purpose of protecting the atmosphere and environment can be achieved.

The basic structure of electrostatic precipitator is as follows:

1, intake fume box

2. Smoke outlet box

3. Shell

4. Cathode system

5. Anode system

6. Cathode frame

7. Anode frame

8. Vibration and transmission system

9. Trough plate system

10, ash handling system

1 1, landing

12, high and low voltage power supply system

13, household shell and insulation layer

14, cathode corona wire

Simply speaking, the whole power supply process is to send 380V power to the primary winding of the rectifier transformer. One end of both ends of the secondary winding is connected with the anode plate (the anode plate is grounded), and the other end is connected with the cathode wire in the electric field through the damping resistor. In this way, a strong electrostatic field will be formed between the anode plate and the cathode wire when the power is on, which can absorb dust particles in the flue gas, and the clean flue gas is sent to the chimney through the induced draft fan and discharged into the atmosphere to achieve the function of dust removal.

The control of the secondary voltage of the whole dust collector is realized by the primary voltage, that is to say, the primary line voltage is 380V V. By changing the conduction angle of the thyristor through the controller, the primary voltage can be changed, and then the secondary output voltage of the rectifier transformer can be indirectly changed. There is a rectifier circuit composed of many rectifier diodes or silicon piles in the rectifier transformer, which is used to boost the AC power input from the primary winding and rectify it into the DC power input electric field, thus forming a powerful electromagnetic field inside the electric field.