The wet electrostatic precipitator is a new dust removal device used to handle trace dust and fine particles, primarily for removing harmful substances such as dust, acid mist, water droplets, aerosols, odors, and PM2.5 from humid gases. It is an ideal equipment for controlling atmospheric dust pollution. Below is some detailed information about the wet electrostatic precipitator:

Working Principle: Under the action of a direct current high voltage, the metal discharge wires ionize the gas around their electrodes, charging the surfaces of dust or mist droplets. The charged particles move toward the collection electrode under the influence of the electric field and deposit on it. Water flows down from the top of the collection plate, forming a uniform and stable water film that carries away the particles on the plate. Gas containing dust and particulate matter enters the wet electrostatic precipitator through the inlet under the suction of the fan. Under high-voltage electrostatic adsorption, a large amount of dust is adsorbed onto the inner surface of the tubes. The nozzles of the spray system spray water mist from top to bottom, which enhances dust charging, adsorbs dust, and flushes the inner surface of the tubes to ensure better adsorption. After the dust is washed down by electrostatic and spray actions, it enters the sewage filtration tank, where dust and fine particles are removed through filtration. The filtered water can be recycled in the spray system.

Features:

1. Strong adaptability: High removal efficiency for flue gas containing pollutants such as low to medium-high concentrations of fine particles and aerosols;

2. High dust removal and purification efficiency: Can reach over 98%;

3. Low water consumption: Rinse water can be collected via a water collection tray and recycled through membrane filtration or directly used as process makeup water for the desulfurization tower;

4. High equipment availability: Availability relative to desulfurization (denitrification) operating time is not less than 95%;

5. Low resistance and energy consumption;

6. Effectively removes fine particulate matter (e.g., PM2.5 dust, SO3 acid mist, aerosols), heavy metals (Hg, As, Se, Pb, Cr, etc.), and organic pollutants (polycyclic aromatic hydrocarbons, dioxins, etc.);

7. Capable of effectively treating dust and mist in low-temperature, humid, and saturated gases;

8. Simple operation, capable of automated control;

9. Effectively collects aerosol mists and sub-micron particles in flue gas, addressing issues such as gypsum rain;

10. SO3 removal rate can reach over 92%;

11. Effectively reduces flue gas opacity, which can be less than 10%;

12. Long service life, typically over 10 years.

Structural Forms:

1. Uses corrosion-resistant conductive materials (such as non-metallic materials with excellent conductivity or metallic materials with corrosion-resistant properties) as the collection electrode;

2. Uses non-conductive non-metallic materials that form a conductive water film through water spraying or overflow as the collection electrode. Based on the direction of the waste gas flow, it can be divided into cross-flow (horizontal) and vertical-flow (vertical) types. The cross-flow type is mostly plate-structured, with gas flowing horizontally in and out. The vertical-flow type is mostly tube-structured, with gas flowing vertically in and out. For the same cross-sectional area of ventilation, the efficiency of the vertical-flow wet electrostatic precipitator is typically twice that of the cross-flow type.

Applicable Fields: Widely used in industries such as steel, chemical, metallurgy, power plants, steel mills, biomass boilers, coal-fired boilers, drying furnaces, kilns, waste incinerators, sintering furnaces, smelting furnaces, and coking plants. It can also be used for treating acid mist and dense fog generated from metal surface pickling, as well as high-temperature, high-humidity, and hazardous waste gases, such as the treatment of dust-laden flue gas after wet desulfurization in power plants and the advanced treatment of flue gas from denitrification catalyst production kilns.