Animation demonstrating the working principles and characteristics of various tower equipment---plate distillation tower

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This post was last edited by 654262293 on 2021-8-22 12:42 The plate tower is a step-by-step contact gas-liquid mass transfer equipment. It is mainly composed of a cylindrical shell, a tray, an overflow weir, a downcomer, a liquid receiving tray and other components. During operation, the liquid in the tower flows by gravity from the downcomer on the upper tray to the liquid receiving tray on the lower tray, then flows transversely across the tray, and flows from the downcomer on the other side to the next tray. The function of the overflow weir is to maintain a certain thickness of liquid layer on the tray. Driven by the pressure difference, the gas passes through the gas channels (bubble caps, screen holes or float valves, etc.) of each tray from bottom to top, disperses into small air flows, and bubbles through the liquid layer of each tray. On the tray, the gas and liquid phases are in close contact, exchanging heat and mass. In the plate tower, the gas and liquid phases come into contact step by step, and the composition of the two phases changes stepwise along the height of the tower. Under normal operation, the liquid phase is the continuous phase and the gas phase is the dispersed phase. Generally speaking, the plate tower has a higher empty column velocity, so it has a larger production capacity, stable tray efficiency, greater operational flexibility, low cost, and easy maintenance and cleaning, so it is widely used in industry.