The principle of electrostatic particle separation
Applied technology is significantly different from mechanical filtration, which we know from vacuum cleaners. A high voltage of up to 20,000 volts will be placed on a very thin electrode in the middle of the waste gas pipe. This high voltage leads to the respirable dust particles being electrically charged via an ionisation process. Due to electrostatic powers these charged particles will be compacted onto the inner wall of the waste gas pipe, where they can then be sustainably separated. The layer of dust which builds up in this way can then be cleaned by the chimney sweep without any danger or problems using normal cleaning technology. With a minimal air circulation (max. 5 m3/h) the system will be kept cooled and clean, which leads to increased functionality and a longer life expectancy with little maintenance. The principle applied in this way also enables a broad use of this technology as a secondary measure, with the best possible separating efficiency.
1. If the voltage on the electrode in the middle of the waste gas flow is high enough, an ionisation process will take place. In this way charged particles, so called charge carriers and gas ions arise.
2. The gas ions attach themselves to the respirable dust particles and therefore lead to them becoming charged. The parts which are charged in this way become compacted on the inner wall of the waste gas pipe and are stored there due to the electrostatic forces. The charge of the particle is “neutralised” during the depositing process. In spite of this the particles remain stuck to the waste gas pipe due to their mechanical cogging.
