Uniflux tray

Many modifications of the three types of contactors just discussed have been developed in an effort to reduce costs, reduce pressure drop, equalize vapor flow through each contactor, increase plate efficiencies, or, in general, improve the operating performance of the tower. An example of this for modification of bubble-cap towers is the old Uniflux tray originally developed by Socony-Vacuum, which consisted of a series of interlocking S-shaped sections which were assembled in the form of tunnel caps with slot outlets on one side only. Segmental downcomers, similar to the downcomers in conventional bubble-cap columns, were provided. The vapors issued from the Uniflux caps in... 

More elaborate arrangements are the familiar bubble-plate (Fig. 16-6) and such modifications as tunnel trays (vapor slots and vapor troughs extend across the plate) and Uniflux trays, float-valve bubble trays, perforated trays with downcomers for the liquid, and Kaskade-type (Bentuii and Flexitray) trays. 

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