Wet Electrostatic Precipitator

Use Wet Electrostatic Precipitators to Increase Air Purity: Excellent Contaminant Removal & Simple Maintenance

Wet electrostatic precipitators are designed to eliminate liquid contaminants such as aerosols, sulfuric acid clouds (resulting from gas washing operations with SO3 in their composition) and dust particles in general.

A very relevant difference between this type of precipitator and the dry electrostatic precipitator is the greater ease of cleaning, since the wet precipitator does not require beating since, naturally, the precipitation of the retained material formed by the gas clouds (forming a liquid phase) occurs in the downward direction due to the action of gravity dragging the solid particles in suspension.

In specific cases, where there is a possibility of particulate deposits forming on electrodes, special liquid spray nozzles can be considered, increasing the wet phase and reducing the amount of solids.

The design of this type of equipment generally foresees a horizontal cylindrical shape with the flexibility of gas entry from the top or bottom. However, the rectangular shape can be used for special cases, such as in the principle of ionization of suspended particles through electrodes and their subsequent capture by means of an electric field generated from high voltages.

Equipment can be used in series to increase the collection capacity or other arrangements depending on the customer’s physical availability. Regardless of the type of process, all wet electrostatic precipitators have liquid spray systems with intermittent operation.

Wet Electrostatic Precipitators for Effective Gas Cleaning: Lower Emissions & Stop Corrosion

These equipments can be manufactured with simpler materials, such as carbon steel, or even high-tech materials to avoid corrosion problems, which is one of the main problems of treated gases for any equipment. These more sophisticated models are more suitable for treating gases resulting from calcination processes for the production of Titanium Oxide (TiO2), sulfuric acid production processes using sulfur dioxide (SO2) or also for washing gases from incineration gases and chemical processes using a dry method.

Emission electrodes have variables such as resistivity and particulate material load considered in their design so that they can be sized and manufactured for better efficiency and lower weight since they are supported by the ceiling structure.

The condensed material is extracted and sent to the appropriate transport process or suitable packaging, or if necessary, reinserted into the customer’s system after a prior adaptation process.

For more information, please consult our Process Engineering team.