Airlift Cyclone Suction and Downcomer Isolation Tray

Abstract

The invention relates to an air-lift cyclone liquid absorption and liquid falling isolation-type tower plate. A sandwiched plate as well as a liquid flow falling guide pipe and a gas-phase rising pipe independent to each other, are additionally arranged below the tower plate. The rising airflow after transferring the mass by a centrifugal cyclone flow field is completely isolated from liquid phase flow after gas-phase mass transferring, so that the problem that the rising air flow causes flooding for the pushing of the falling liquid in an ordinary plate-type tower can be thoroughly avoided, the air speed of the tower plate can be greatly increased, the air-phase cyclone strength can be improved, the capability for breaking liquid drops can be improved, the mass transfer efficiency can be improved, and the tower path can be reduced. Since the rising airflow is isolated from the falling liquid phase, the air phase and the liquid phase after the high-speed cyclone contact mass transferring can be separated by virtue of a short height distance of the tower plate under the centrifugal action of the high-speed eddy flow, so that the distance between two adjacent layers of tower plates can be greatly reduced, and the height of the tower can be greatly reduced. The novel tower plate has the characteristics of small tower diameter, low tower height and high efficiency and has a prominent advantage in the field of high-air-flow effective mass transfer.

Description

technical field [0001] The invention discloses an air-lifting cyclone liquid suction and a descending liquid-separated column tray, and belongs to the technical field of contact gas-liquid mass transfer. Its mechanism and appearance are similar to ordinary trays, but there are obvious differences. First of all, the invention adds a liquid inlet liquid storage interlayer that isolates the gas phase, thereby completely avoiding the problem of "liquid flooding" caused by the high-speed upward flow of the gas phase pushing up the liquid phase in conventional trays. Secondly, a set of swirl guide vanes are fixed in each channel of the upflow of the gas phase, so that the rising gas phase rotates at a high speed and generates a centrifugal force field: on the one hand, the liquid phase is sucked from the central low-pressure area to make the circulation flow of the liquid phase smoother; On the other hand, the inhaled liquid phase is torn into countless fine droplets under the acti...

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Problems solved by technology

However, the descending process of these new trays still only relies on the gravity of the liquid, and the descending effect is limited. Secondly, after the centrifugal force field is used to enhance the mass transfer, how can the gas and liquid be separated efficiently to prevent the mist from being entrained to the upper tray? There is also a lack of effective technical means

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