1. Wet Electrostatic Precipitator
2. Star tube cooler
3. Radial flow scrubber with venturi head
Wet electrostatic precipitator (WESP) particulate control systems designs can either up flow or down flow relative to where polluted air enters the WESP during the particulates control process. Turing canes and perforated plate evenly distribute the gas glow inside of the wet electrostatic precipitator.
GEA´s wet electrostatic precipitator (WESP) use electrostatic force to remove particulate. It is used treat gas streams with sub-micron particulate, aerosol, or fumes. These can include heavy metals such as lead, arsenic or cadmium, condensed acid aerosols like sulfur trioxide (SO3), or condensed volatile organic compounds (VOC´s). The use of electrostatic forces minimizes energy costs compared to other technologies, which require large amounts of energy to overcome resistance to air low.
Wet electrostatic precipitators are used in a wide range of applications including, hazardous and medical waste incinerators, metals refining, sulfite pulp mill recovery boilers, copper roasters, sulfuric acid plants, and wood dryers including oriented stand board, medium density fiber board, or pellet mill dryers.
The GEA WESP is a proprietary, robust design. It has a unique alignment mechanism to hold electrodes rigidly in place. This reduces installation and maintenance time and proves performance. The field strength is consistently maintained at high levels with minimal sparking, resulting in the highest available efficiency. The greater the electrostatic fields strength, the greater the particle migration velocity (velocity component towards the collection tube). Increase migration velocity achieves higher particle collection efficiency with lower specific collection area (SCA) than conventional precipitators. Lower SCA means a smaller, less expensive unit.
GEA´s wet electrostatic precipitators may also be designed with a integrated packed bed scrubber section for acid gas removal. This makes the unit a versatile, multi-pollution system which has demonstrated proven performance for meeting the most stringent emission limits encountered in industrial today with smallest available footprint.