The principle of wet ESP is to charge the dust by high voltage corona discharge.
Wet electric precipitator and dry electric precipitator dust collection principle is the same, are relying on high-voltage corona discharge to make the dust charged, charged dust in the electric field under the action of the force to reach the dust collection plate tube.
The dry type electric dust collector mainly deals with the dry gas with low water content, and the wet type electric dust collector mainly deals with the wet gas with high water content and even saturated. There is a big difference between WESP and DESP in the way of removing the dust captured on the dust collection plate tube.
Dry ESPs generally use mechanical vibration or acoustic cleaning to remove the dust on the electrodes, while WESPs use periodic flushing to remove the dust with the flow of flushing liquid.
Characteristics of wet type electric precipitator:
Has the advantages of high dust removal efficiency, small pressure loss, simple operation, small energy consumption, no moving parts, no secondary dust, low maintenance costs, short production downtime, can be operated in the flue gas below the dew-point temperature, due to the compact structure and can be combined with other flue gas treatment equipment, the design of form The advantages of diversification of design forms.
The wet ESP uses liquid to flush the surface of the dust collection pole to clean the dust, which can effectively collect fine particles, heavy metals, organic pollutants, etc. The wet ESP can be used to clean the surface of the dust collection pole, which can be used to clean the surface of the dust collection pole. After using wet ESP, the emission of dust in wet flue gas can be up to 10mg/m3 or even less than 5mg/m3, and the performance of dust collection has nothing to do with the characteristics of dust, so it is suitable for the treatment of wet flue gas.