Vapor-liquid contact tray and downcomer assembly and method employing same
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United States of America Patent
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May 27, 1997
Issued Date -
N/A
app pub date -
Dec 28, 1995
filing date -
Apr 28, 1994
priority date (Note) -
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Abstract
A vapor-liquid contact tray and downcomer assembly is provided with ramps which serve to impart a horizontal directional flow to the liquid exiting the downcomer and/or the vapor passing through the tray. The downcomer includes a bottom plate which closes the outlet region of the downcomer and includes a plurality of ramps which redirect the downwardly flowing liquid to include a horizontal component in the direction of liquid flow across the underlying tray. The downcomer receiving area in the underlying tray can include valves having floating caps which shield the associated openings in the tray against liquid weeping and redirect the vertical movement of the vapor streams to a generally horizontal momentum.
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