Inlet configurations vaned

Fig. 1.3.8. Side and top views of the four most used inlet configurations, a circular or pipe inlet, b slot (also called tangential ) inlet, c wrap-around inlet, and d axial inlet with swirl vanes...

Diffuser vanes are sometimes installed as a vapor distributor at the column inlet. The success of this arrangement depends on the vane design and the shape of the inlet vapor jet the latter is a function of the column feed piping configuration. This arrangement can also be sensitive to plugging, coke buildup, and corrosion. 

This configuration is also sometimes called a tangential inlet, but we reserve this term to distinguish from axial inlets with swirl vanes... 

This completes our look at the design of cylinder-on-cone cyclones with tangential inlets. In the following section we discuss the design of cylindrical swirl tubes with swirl vanes. In this discussion, we concentrate on the aspects that are specific to swirl tubes. For the aspects shared between swirl tubes and tangential entry cyclones, much of the discussion above is equally valid for swirl tubes, such as the discussion pertaining to vortex finder configurations. 

The design of swirl tubes features much less prominently in the hteratme than cylinder-on-cone cyclones. The main design features specific to swirl tubes are the inlet vanes, the length of the swirl tube body and the configuration of the... 

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