Ripple trays

Figure 8-67D. Ripple tray (no downcomers). Used by permission. Stone and Webster Engineering Corp., Boston, Mass.

Ripple trays, made of perforated corrugated sheets, with vapor flow... 

In general, gas and liquid flows pulsate, with a particular perforation passing both gas and liquid intermittently, but seldom simultaneously. In large-diameter (>2.5-m, or 8-ft) dual-flow trays, the pulsations sometimes develop into sloshing, instability, and vibrations. The Ripple Tray is a proprietary variation in which the tray floor is corrugated to minimize this instability. 

Ripple trays, made of perforated corrugated sheets, with vapor flow predominantly through the peaks and liquid through the valleys, developed by Stone and Webster. 

In general, tray columns are constructed with downcomers to provide a separate How pelh for the liquid scream from tray lo tray. However, in some desigas such as the Turbogrid, Dualflow, Ripple Tray. Kiule... 

Ripple tray and vapor flute—High capacity with fouling minimization for quench oil and quench water towers... 

Holes are sometimes drilled in side-to-side baffle trays, and the extreme in such a trend results in perforated trays, sieve plates, Turbogrid trays, and Ripple trays. In these, both the down-flowing liquid and the rising vapor pass through the same openings. 

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