| 摘要 |
In a crossflow gas-liquid contact tower, liquid moves horizontally across a plurality of vertically spaced trays, 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 in the plane of the tray, and a deflector which overlies the aperture to define lateral vapor outlet slots. The aperture is wider at its upstream end than at its downstream end; and, the deflector has upstream and downstream portions 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 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. The apertures have lengths no greater than 2.0 inches, upstream widths no greater than about 1.0 inch, and downstream widths no greater than 0.75 inch. The lateral outlet slots have upper edges no longer than about 0.85 inch, lower edges no longer than about 2.0 inches, and heights no greater than 0.35 inch. The trays are manufactured by a pressing technique causing burrs to be formed around the lateral outlet slots.
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