Improving hydraulics and efficiencies with the T‐By sieve tray

Abstract

A modified sieve (that is, T-By) tray uses a system of weirs and risers to approximate liquid plug flow over a cross-flow, circular-section tray. Vapor-liquid contact is improved using a system of curtain-pattern vapor holes and intermediate weirs to form cells across the tray that promote liquid mixing into discrete, wellmixed pools and stabilize froth. A theoretical model is used to analyze experimental data, guide tray design, and suggest new strategies for improving performance. These results indicate that tray efficiencies and stabilities can be increased without capacity losses. Pressure drop can also be manipulated to enhance performance.

New Method for Designing an Energy-Saving Tray and Its Hydrodynamic Aspects: Temperature Distribution and Efficiency of Deflected Tray-95

“…Many experiments have been carried out to study the flow pattern, and several methods have been developed to improve it. Tedder used a system of intermediate weirs, risers, and curtain-pattern vapor holes on his T-By tray to set up a series of multiple vapor−liquid contacting cells (see Figure of ref ). These small mixing cells not only promote plug flow but also provide positive contact zones for mass transfer.…”