Gas and liquid contact apparatus – Contact devices – Wet baffle
Patent
1983-04-04
1985-03-12
Chiesa, Richard L.
Gas and liquid contact apparatus
Contact devices
Wet baffle
202158, B01F 304
Patent
active
045044260
ABSTRACT:
A gas-liquid contacting apparatus is provided having downcomers which are closed at their lower ends by perforated, inclined, liquid distributing, gas entry retarding, plates. The downcomers each depend from a drainage opening bounded by a weir on a perforated, liquid frothing tray. Alternate trays have central drainage openings and are interposed with trays having drainage openings adjacent opposite tray sides. The trays have liquid frothing perforations across the whole of each tray including the area beneath each drainage opening. The perforations beneath a drainage opening occupy an area per unit area of the drainage opening in the range 0 to 25% less than the perforations per unit area in the remainder of that tray. The apparatus produces a frothing layer on the trays in which the perforated, inclined, liquid distributing, gas entry plates are immersed and, which gives a good liquid flow distribution across the tray so that a high efficiency of contact between the gas and the liquid is achieved. When the plates of the downcomers are at positions above the froth on the perforated plate immediately below then each plate extends substantially horizontally. The perforated, inclined, liquid distributing, gas entry retarding plates extend upwardly along an inclined path towards the direction of flow of frothed liquid across the tray immediately therebelow.
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Chuang Karl T.
Everatt Allan E.
Atomic Energy of Canada Limited
Chiesa Richard L.
Lemon Francis W.
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