Electrostatic precipitators

The system "electrode - suspension - rapping" developed by Redecam optimizes the energy applied to remove the dust and limits its re-entrainment in the gas stream.
The system is designed to ensure that the collecting plates and discharge electrodes remain perfectly aligned during all operating conditions.
Specific baffles are fitted inside the hoppers and along the lateral walls of the ESP to prevent gas bypassing the treatment zone and dust re-entrainment phenomena.
REER, Redecam Rigid Emission Electrodes, are specifically designed to operate with the highest available voltages: this allows a full distribution of the ionisation effect over the entire length of the electrode.
The rapping action takes advantage of the sound impact of the cleaning hammers on the electrodes frames, without risk of damage for those elements. Their rigidity avoids any power dispersion during the hammers hitting, which is evenly transmitted in the same direction of the dust particles when they are dropping from the electrodes.
The electrodes are individually fixed at their top and only kept aligned at the bottom to ensure free thermal expansion and a wide flexibility both during operation and maintenance.
Each electrode can expand independently (this is not the case when electrodes are installed in a rigid chassis) and can undertake temperature rise during operation.
The centreline of each discharge electrode always remains at the same distance from the collecting plates (the lack of this condition is one of the main causes of ESP malfunctions).
Each electrode can be removed from the suspending frame, since it is not part of a rigid chassis, without removing the ESP roof or creating extra openings.
The profile of Redecam collecting plates improves the ESP efficiency during the rapping phase by reducing the re-entrainment of dust in the gas flow. Plates are suspended at the top and only kept aligned by a guide frame at the bottom to maintain their correct position under all operating conditions.
The mechanism ensures uniform rapping of each plate at regular intervals. Hammers are mounted in a staggered position on the hammer-shaft, so that only few of them impact at the same time.