In a wet electrostatic precipitator, water mist causes dust particles to agglomerate and become charged together with the dust in the electric field, after which they are collected jointly. The water mist collected on the electrode plates forms a water film, which helps clean the electrodes and keeps them free of dust. Meanwhile, as the flue gas temperature decreases and its moisture content increases, the specific resistivity of the dust drops significantly, ensuring that the wet electrostatic precipitator operates in a highly stable condition.

Working principle of WESP technology: A high-voltage DC electric field of several tens of thousands of volts is applied between the anode plates (cylinders) and the cathode wires of the mist eliminator. Under the influence of this strong electric field, the gas between the anode and cathode undergoes thorough ionization, filling the space within the mist eliminator with ions carrying both positive and negative charges. As the process gas flow enters the mist eliminator, dust (or mist) particles collide with these positive and negative ions, becoming charged in the process. The charged dust (or mist) particles, subjected to the Coulomb force generated by the high-voltage electrostatic field, move toward the cathode and anode electrodes, respectively. Upon reaching the electrodes, they release their respective charges. Meanwhile, the dust (or mist) particles themselves, due to their inherent viscosity, adhere to the anode plates (cylinders) and cathode wires. Finally, these particles are removed through a fluid-cleaning method.

The product effectively removes SO3, heavy metals, fine particulate matter (PM2.5), and tiny liquid droplets, with a removal efficiency exceeding 90%. Its direct effect significantly reduces the opacity (turbidity) of flue gas, essentially resolving the issues caused by wet desulfurization. Its indirect effects include the substantial removal of SO3 and water mist, which can effectively lower the corrosion-resistance requirements for chimneys, thereby meeting stricter environmental standards, reducing water consumption, and lowering operational costs.

Technical Features: 1. The single-unit capacity for flue gas treatment is relatively small, typically not exceeding 50,000 m³/h. 2. The designed flue gas velocity is relatively low, generally around 1 m/s. 3. The dust collection electrodes are often made of PV or FRP materials.

Advantages: 1. Not affected by specific electrical resistivity; 2. No secondary dust generation; 3. No dust accumulation on the plates; 4. No moving parts; 5. Removes SO3 acid mist, thereby reducing corrosion of flue ducts and chimneys; 6. Effectively captures PM2.5.