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Cyclones have been mostly designed and improved by empirical means. Computerized Flow Dynamics (CFD) can be used for partial cyclone optimization but it is still incomplete for full cyclone optimization. Notably low collection efficiency results from the fact that particle agglomeration for cyclone modelling has been disregarded until present days. ACS developed a complete line of very different Hurricane cyclone families for each different need,...
ACS holds a patent of a recirculation system to increase the efficiency of cyclones. A mechanical ReCyclone® (ReCyclone® MH) is made up of a high efficiency Hurricane and a particle separator, placed downstream, called the “mechanical recirculator” (please see figure). In 2016, ACS introduced more compact recirculators that can be placed on top of cyclones, exempting the need of additional footprint.
Recent adoption of electrostatic recirculation in the same cyclone system has successfully proven to further reduce particle emissions, even in the [1;5]μm particle size range, assuring future regulation compliance, particularly where legal limits are very strict.