Cyclone Separator

Cyclone Separator is a high speed rotating machine that is established within a cylindrical or conical container named as cyclone. In a Cyclone Separator the air flows in a helical pattern, beginning at the top (wide end) of the cyclone and ending at the bottom (narrow) end before exiting the cyclone in a straight stream through the center of the cyclone and out the top. The larger (denser) particles in the rotating stream have too much inertia to follow the tight curve of the stream, and strike the outside wall, then falling to the bottom of the cyclone where they can be removed.  
The multiple-cyclone separators consist of a number of small-diameter cyclones, operating in parallel and having a common gas inlet and outlet, as shown in the figure. Multiple-cyclone separators operate on the same principle as cyclones, i.e., creating a main downward vortex and an ascending inner vortex. Multiple-cyclone separators are more efficient than single cyclones because they are longer and smaller in diameter. The longer length provides longer residence time while the smaller diameter creates greater centrifugal force. These two factors result in better separation of dust particulates. The pressure drop of multiple-cyclone separators collector is higher than that of single-cyclone separators.