The rotor concentrator system is an auxiliary plant to the main emissions treatment systems, used where there are high flow rates and low concentrations of VOC to reduce the total energy consumption.
The rotor concentrator is an auxiliary system used when polluted airflow volume is high and the VOCs (Volatile Organic Compounds) concentration is low. This solution has the specific target to support the following abatement stage (thermal oxidation), optimizing system overall energy consumption.
It is very important to pay particular attention to the (often necessary) filtration of the gas effluent to be treated, as to avoid the concentration rotor clogging and adsorption efficiency reduction. For this purpose, a multistage filtration section is installed. In it, ensuring proper air speed reductions and the presence of proper filtering materials, the most of the dust is removed.
In this phase the pollutants adsorption process takes place, by means of a concentration rotor containing zeolites that ensures the continuous adsorption and the contemporary regeneration of part of the rotor, thus avoiding the need to foresee more consecutive phases.
The concentration rotor is in fact composed of more sections: in addition to the adsorption one, we have a regeneration section (with reduced dimensions) in which it is possible to remove the previously accumulated pollutant, restoring the zeolites adsorption efficiency.
This is how the process happens: the polluted air is conveyed, by means of proper fans, to the adsorption section of the concentration rotor, where the pollutant is held according to the chemical-physical bonds that are formed between the adsorbent material (zeolites) and the pollutants themselves. The purified air is conveyed to the final ejection stack. After that, thanks to the heating of proper areas of the concentration rotor, the pollutant adsorbed from primary emission is released to a second flow with a highly reduced flow rate. This concentrated flow is sent to a thermal oxidation process which, according to specific technical characteristics, can be recuperative, catalytic or regenerative. The choice of the right final oxidation system can achieve the self-sustaining condition, drastically reducing the auxiliary fuel consumptions.
The Brofind rotor concentration system is part of a range of technologically advanced atmospheric pollution control products on the market for decades. The company guarantees its availability during the entire lifecycle of each of these products.
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