Three different types of cyclone are shown in figure 5.2. First figure i.e. 5.2a shows a cyclone with a tangential entry. These types of cyclones have a distinctive and easily recognized form and widely used in power and cement plants, feed mills and many other process industries.

Figure 5.1 : schematic diagram of cyclone separator

Figure 5.2b shows the axial entry cyclones, the gas enter parallel to the axis of the cyclone body. In this case the dust laden gases enter from the top and are directed into a vortex pattern by the vanes attached to the central tube. Axial entry units are commonly used in multi cyclone configuration, as these units provide higher efficiencies.

Another type of larger cyclonic separator shown in figure 5.2c is often used after wet scrubbers to trap particulate matter entrained in water droplets. In this type, the air enters tangentially at the bottom, forming vertex. Large water droplets are forced against the walls and are removed the air stream.