Discharge electrodes (DE) emit charging current and provide voltage that generates an electrical field between the discharge electrodes and the collecting plates. The electrical field forces dust particles in the gas stream to migrate toward the collecting plates. The particles then precipitate onto the collecting plates.
Common types of discharge electrodes include:
Discharge electrodes are typically supported from the upper discharge frame and are held in alignment between the upper and lower discharge frames. The upper discharge frame is in turn supported from the roof of the precipitator casing. High-voltage insulators are incorporated into the support system. In weighted wire systems, the discharge electrodes are held taut by weights at the lower end of the wires.
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