What are the roles of wet electric demister in air pollution prevention and control?
Publish Time: 2025-04-09
With the acceleration of industrialization, air pollution problems are becoming increasingly serious, especially fine particulate matter and aerosol pollutants, which pose a huge threat to human health and the environment. To meet this challenge, wet electric demister, as an efficient air purification device, plays a vital role in air pollution prevention and control.
1. Working principle of wet electric demister
The wet electric demister uses the action of high-voltage DC electric field to charge the fine particles in the dust-containing gas, and moves to the dust collecting electrode under the action of the electric field force, and is finally captured and removed. Its working process mainly includes the following steps:
Pretreatment: Before entering the wet electric demister, the exhaust gas usually undergoes preliminary washing or cooling treatment to reduce the temperature and remove some large particle pollutants.
Charged: After the exhaust gas enters the electric field area, the fine particles in it are charged by the free electrons generated by corona discharge.
Capture: The charged particles move to the collection plate of opposite polarity under the action of the electric field force and adhere to its surface to form droplets.
Cleaning: Regularly rinse the sediment on the collection plate with water to ensure the continuous and efficient operation of the system.
2. Application cases of wet electric demister
Power industry: In thermal power plants, wet electric demister is widely used in flue gas desulfurization systems to further remove fine particles and acid droplets in flue gas, effectively reducing the concentration of pollutants in chimney emissions and reducing the impact on the surrounding environment.
Chemical and metallurgical industry: For chemical plants and metal smelters that produce a large amount of harmful gases, wet electric demister can not only remove particulate matter in exhaust gas, but also effectively capture heavy metal ions and other harmful substances to prevent them from being released into the atmosphere.
Cement manufacturing: In the cement production process, wet electric demister can efficiently remove dust and aerosols from kiln exhaust gas, significantly improving the air quality around the factory.
3. Contribution of wet electric demister in air pollution prevention and control
Efficient removal of fine particles: wet electric demister has a high removal efficiency for ultrafine particles of PM2.5 and below, usually up to more than 90%, which is particularly important for controlling haze weather.
Reduce secondary pollution: Compared with traditional dry dust removal technology, wet electric demister can more thoroughly remove water-soluble pollutants in exhaust gas, such as sulfuric acid mist, nitric acid mist, etc., thereby reducing the possibility of secondary pollution.
Strong adaptability: wet electric demister can operate stably in high humidity environments, and is particularly suitable for treating exhaust gas containing a large amount of water, such as exhaust gas emitted by industrial boilers and incinerators.
Environmental compliance: As environmental protection regulations in various countries become increasingly stringent, wet electric demister helps companies meet increasingly stringent emission standards and avoid fines and legal liabilities for illegal emissions.
In summary, wet electric demister plays an irreplaceable role in air pollution prevention and control with its excellent performance. It not only helps to significantly reduce the emission of fine particulate matter and harmful substances in industrial waste gas, protect public health and the ecological environment, but is also an important tool for enterprises to achieve green production and sustainable development goals.
