Wet Electrostatic Precipitator
he Wet Electrostatic Precipitator is an extremely versatile de-dusting system that provides the perfect solution for any process in which special dust or gas characteristics make dry separation impossible.
High collection efficiency
For many years our reliable Wet Electrostatic Precipitators have been unsurpassed in their operational reliability, long operational life and collection efficiency. They are perfect for separating aerosols, extremely fine dust particles, and H₂O-saturated emissions containing tar or oil. Another positive effect is the additional bonding of toxic elements like HCl, SO₂, NaCl and HF.
Functional principle
The process gas vertically enters the ESP from the bottom and is spread in a uniform flow profile across the entire filter by means of a Gas Distribution System. The particles / aerosols / water droplets are electrically charged by the application of high voltage (78-135kV) between the Spray Electrodes and the Honeycomb Collecting Electrodes. On their way through the electric field, the charged particles are transported by electrostatic attraction to the Collecting Electrodes, where they agglomerate with the existing dust particles and are subsequently flushed off periodically by a flushing system.
The dust-water-mixture automatically flows into the filter sump located below the gas intake. The purified gas leaves the filter through the gas outlet hood located at the filter head.
Vertical Gas Distribution
The gas is distributed from bottom to top through the Honeycomb Collecting Electrodes (Honeycomb Clusters). The Honeycomb shape, results in a very large collection surface.
Centralised Arrangement
Each Honeycomb contains centrically located Discharge Electrodes made from high-grade materials.
Adjustable baffle plates ensure ideal gas distribution inside the electric field.
- Volume flow rates: 1,000 – 500,000m3/h
- Temperatures up to 75°C
- For higher temperatures, we provide an additional cooling zone
Highly Effective
Ultra-fine and coarse droplets from up-stream system components, like scrubbers, driers or quenches, can be purified to meet legal emission limits. Optimal separation of aerosols and critical types of dust with very low settling velocity.
Wet ESP
Wet, but dry
Supporting insulators of the Discharge System are kept dry with purging air to prevent flashovers.
Safe dust removal
Specific electrical dust resistance is irrelevant, because the resistance in saturated atmospheres is always favorable for separation.