CN-15-900x2SP

Application of Cyclones CN-15-900x2SP
The CN-15 cyclone is the most in-demand and versatile dust collection model. Its main function is to remove dry dust particles from a gaseous medium. This device is typically installed in crushing and grinding units and is also used for the transportation of bulk materials and fly ash handling.

Cyclones CN-15-900x2SP are used to purify dry gases released during various technological processes. However, these units are not recommended for gas media that contain droplet-liquid phases or steam condensate. They should also not be used for filtering air containing sticky or fibrous dust, or in toxic or explosive environments.

Operating Principle of Cyclones CN-15-900x2SP
Dust collection in a CN cyclone occurs due to centrifugal forces that arise when dusty gas is fed tangentially into the cyclone housing at a relatively high speed. Dust particles are thrown toward the cyclone wall, and the gas velocity drops significantly after passing through the annular gap between the cyclone body and the gas outlet pipe — becoming lower than the particle settling velocity. In the central part of the cyclone, the gas flow changes direction by 180°, and the dust particles are fully separated under inertial forces. The dust then falls to the bottom of the body and is collected in a hopper below.

Design of Cyclones CN-15-900x2SP
CN-15 cyclones can be manufactured in explosion-proof versions — structurally equipped with explosion relief valves, and the hopper is minimized to prevent the accumulation of explosive dust. To extend the service life of the cyclones, additional wear-resistant plates may be welded to the most stressed areas (such as the bottom of the cone or the gas inlet section of the scroll) on the outer surface. Cyclones with a diameter of less than 800 mm are not recommended for capturing abrasive dust due to increased wear.

The standard manufacturing material is carbon steel for ambient temperatures down to -40^oC. For temperatures below -40^oC, low-alloy steels are used.

Depending on application conditions and performance requirements, cyclones of this type are produced in both single and group configurations. Group-type CN-15 cyclones are available with either right-hand or left-hand gas flow rotation. Single cyclones are only manufactured with right-hand rotation (but can be modified per customer request). Group dust collection assemblies can be equipped with a clean gas chamber (collector or scroll), while single cyclones come only with a scroll.

The cyclone can be supplied with a hopper. Its size, shape, and price may vary. The hopper should be selected based on the desired interval between cleanings. All hoppers are pyramidal in shape.

Installation of Cyclones CN-15-900x2SP
The dust fan supplies air into the system, and the cyclone filters it. The fan can be positioned either before or after the cyclone. In the first case, a dust fan is recommended. In the second case (fan after the cyclone), a VC 14-46 fan may be used — but only with an air spinner installed.