A Closer Look at Centrifugal Gas Cleaning Devices

We now concentrate on centrifugal devices. In these, the dust-laden gas is initially brought into a swirling motion. The dust particles are slimg outward to the wall, and are transported downward to the dust outlet by the downwardly directed gas flow near the wall. 

A sketch of a standard reverse-flow, cylinder-on-cone cyclone with a tangential, slot-type inlet is shown in Fig. 1.3.1. 

For the standard, reverse-flow cyclone, (with a so-called slot or pipe t3rpe of entry, see below) the swirling motion is brought about by designing the inlet in such a manner that it forces the gas to enter the unit on a tangent to the inner body wall. The inlet is normally of rectangular cross section, as 

The geometry of a cyclone with a slot type inlet is determined by the following eight dimensions  

All dimensions are understood to be inside, finished dimensions exposed to flow. 

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