Wet electrostatic precipitator

Wet electrostatic precipitators mainly use wet methods to treat the dust, gypsum particles, and droplets carried by the desulfurized flue gas accordingly. Generally, the flue gas containing dust in work comes out of the desulfurization absorption tower, and after being humidified by the spray layer of the dust collector, it enters the wet dust removal Venturi rod layer and forms a local high-speed zone. At the same time, atomized water droplets generate a water film near the Venturi rod layer to intercept and capture dust in the flue gas, and then the flue gas is discharged into the circulating water tank after being dedusted by the water film. The purified flue gas after dust removal is guided by a guide plate, and then further removed of water mist by the flue gas demister at the tail of the wet dust collector before being discharged into the atmosphere through a chimney.

Wet electrostatic precipitators have the advantages and functions of excellent dust removal effect during operation, flue gas cooling, and no specific absorption based on clinical effects. The essence rate of absorbing dust and gas gathered by fog and dust is high during operation.

Wet electrostatic precipitators come into contact with water and dust, and thoroughly mix them to remove dust. It has a simple structure, easy maintenance, good efficiency, and is suitable for various cleaning and purification processes containing dust and without specific clinical effects as the main focus. Let's understand its dust removal principle.

When the dust containing gas of the wet electrostatic precipitator collides with water or other liquids, the dust particles will agglomerate and then be captured by the liquid medium, achieving the purpose of dust removal. The contact between gas and water involves the following processes: dust particles come into contact with pre dispersed water films or mist like liquids; The dusty gas impacts the water layer and bubbles of the wet dust collector, forming small water droplets or water films; Larger particles are usually captured and detected when colliding with water droplets, and the capture efficiency affects the inertia and diffusion degree of the particles. Due to the relative motion between water droplets and airflow, as well as the presence of an environmental air film around the droplets, when gas approaches the droplets, it changes its flow and bypasses them. Then, dust particles are subjected to inertial forces and diffusion, maintaining their original trajectory and colliding with the droplets.

In this way, within a certain range, dust particles may collide with water droplets and be carried away by the water flow, as the water condenses into large particles. This indicates that the water droplets are small and numerous, and the larger the surface area of the wet dust collector, the more opportunities for contact with dust particles, and the higher the efficiency of collision, diffusion, and condensation. The higher the packing density, particle size, and relative velocity of dust particles and water droplets, the higher the efficiency of collision and agglomeration.