The working principle of electrostatic dust removal air purifier using high-voltage DC electric field to make the air gas molecules ionization, resulting in a large number of electrons and ions, under the action of the electric field force to the poles of the movement, in the process of moving the dust particles in the airflow and bacteria to make it charged, charged particles under the action of the electric field to the opposite of its own charge to do the movement of the pole plate, the role of the electric field, the air in the free Ions to move to the poles, the higher the voltage, the higher the electric field strength, the faster the movement of ions.
The electrostatic precipitator is the flue gas through the flue before the main structure of the electrostatic precipitator, so that its soot is positively charged, and then the flue gas enters the electrostatic precipitator channel which is set up with multi-layer cathode plates.
The electrostatic precipitator consists of two main parts: one part is the body system of the electrostatic precipitator; the other part is the power supply device that provides high-voltage direct current and the low-voltage automatic control system. High voltage power supply system for the step-up transformer power supply, dust collector dust pole grounding. The low-voltage electric control system is used to control the temperature of the electromagnetic vibrating hammer, the ash discharge electrode, the ash delivery electrode and several components.
Expanded Information:
The capture process of charged dust: on the two metal anodes and cathodes with a large difference in the radius of curvature, a high voltage direct current is passed through the metal anodes and cathodes, maintaining an electric field sufficient to ionize the gas. The electrons generated after ionization of the gas: anions and cations, adsorbed on the dust through the electric field, so that the dust gets an electric charge.
Dust with different charge electrode properties in the electric field force, respectively, to the different polarity of the electrode movement, deposited on the electrode, and to achieve the purpose of dust and gas separation.
Electrostatic precipitator and other dust removal equipment, compared with less energy consumption, dust removal efficiency is high, suitable for removing the flue gas in the 0.01-50μm dust, and can be used for flue gas temperature, pressure occasions. Practice shows that the larger the amount of flue gas to be processed, the more economical the investment and operating costs of using electrostatic precipitator.
When there is uneven distribution of airflow, the dust collection rate is high in the place of low air velocity, the dust collection rate is low in the place of high air velocity, and the increase of dust collection in the place of low air velocity is less than the decrease of dust collection in the place of high air velocity, and the total dust collection efficiency is reduced. And the high air velocity will appear in the place of scouring phenomenon, will have been deposited in the dust collection plate on the dust again a large number of raised.
Baidu Encyclopedia - Electrostatic Precipitator