High capacity tray for gas-liquid contact apparatus

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 3/20 (2006.01) B01D 3/22 (2006.01)

Patent

CA 2142360

In a crossflow gas-liquid contact tower, liquid moves horizontally across a plurality of vertically spaced trays (2), and downwardly from tray-to-tray while gas flows up through openings in the trays to create a liquid-vapor mixture in an active bubble area. Each opening includes an aperture (16) in the plane of the tray, and a deflector (18) which overlies the aperture to define lateral vapor outlet slots (22). The aperture (16) is wider at its upstream end than at its downstream end; and, the deflector (18) has upstream and downstream portions (18u, 18d) which extend across the ends of the aperture. The deflectors can be stationary or they can be vertically movable valves. The centers of the apertures (16) are spaced apart no more than about 3.0 inches in the longitudinal flow direction, and no more than about 2.0 inches transversely of the flow direction.

Dans une tour de contact gaz-liquide fonctionnant à contre-courant, un liquide se déplace horizontalement sur une pluralité de plateaux (2) espacés verticalement et il descend de plateau à plateau, alors que le gaz monte par des ouvertures dans les plateaux, pour créer un mélange liquide-vapeur dans une zone active où se forment des bulles. Chaque ouverture comporte un orifice (16) dans le plan du plateau et un déflecteur (18) qui surplombe l'ouverture en formant des fentes de sortie latérales pour la vapeur (22). L'ouverture (16) est plus large à son côté amont qu'à son côté aval et le déflecteur (18) a des portions amont et aval (18u, 18d) se trouvant aux extrémités de l'orifice. Les déflecteurs peuvent être stationnaires, ou il peut s'agir de valves mobiles verticalement. Les centres des orifices (16) ne sont pas distants de plus de 3,0 pouces environ dans la direction longitudinale de l'écoulement et de plus de 2,0 pouces transversalement à la direction d'écoulement.

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