| 摘要 |
Vapor-liquid contact apparatus includes a plurality of substantially horizontal trays (4) vertically spaced in a vessel (2). Liquid and vapor-liquid mixtures flow horizontally across the trays (4), over weirs (8), and vertically through downcomers (16) to subsequent trays. Each tray has a bubble area (10) with vapor apertures. Each downcomer (16) has an apertured bottom wall (18) which is horizontally coextensive with an unapertured downcomer seal area (6) on the tray therebelow. The downcomer seal area (6) and a portion of the apertured bubble area (10) are elevated with respect to a major portion of the tray's upper surface area. The tray has two outboard panels with integral flanges (50) at their edges, and the upstream ends of these integral flanges are supported on a stationary truss (56) in the vessel. To promote deentrainment of vapor from the mixture in the downcomer, a perforated sheet (80, 82) with inclined corrugations is positioned substantially vertically in the downcomer (16).
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