Gas-liquid mass transfer element

Abstract

The invention discloses a streamlined distributing gas-liquid mass transfer element and relates to gas-liquid mass transfer equipment in the industrial field of chemical engineering and the like. According to the novel gas-liquid mass transfer element, a traditional circle or rectangle is replaced by a streamlined shape, distributing fins are arranged beside tooth slots or holes which are used for the passing of gas on the element, and the tooth slots or the holes and the distributing fins are not uniformly distributed, so as to push liquid to uniformly and steadily flow to the maximum degree when the gas passes through the tooth slots or the holes. By using the gas-liquid mass transfer element, the obstruction and disturbance borne by fluid can be reduced when the fluid flows through a gas-liquid contact element, liquid level drop is reduced, and the phenomena of flowing vortices and stagnation of the fluid on a tower plate are reduced or eliminated, so that materials are pushed to uniformly and steadily flow on the tower plate and uniform mass transferring of gas and liquid is promoted, so that the efficiency of the tower plate and the production capability can be improved.

Description

technical field [0001] The invention relates to a streamlined gas-liquid mass transfer element with a guiding function, which belongs to the gas-liquid mass transfer equipment in chemical engineering and other industrial fields, in particular to the gas-liquid mass transfer device for rectification (including absorption and gas stripping) trays mass transfer element. Background technique [0002] After nearly two centuries of development, traditional distillation technology has made great progress. Researchers have developed various trays and gas-liquid mass transfer elements. However, there are still some aspects to be improved on the current trays, one of which is to continue to improve the mass transfer efficiency of the trays. [0003] There are many factors that affect the efficiency of the tray, and the flow state of the liquid on the tray is one of them. Studies in recent years have shown that the flow of liquid on traditional trays is not a very regular flow, but t...

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Problems solved by technology

[0005] In addition, for the plate tower, the core is the gas-liquid contact element, and when the fluid on the plate flows through the gas-liquid contact element, it is bound to be hindered and disturbed, resulting in non-ideal flow phenomena such as turbulence and stagnation, thereby affecting the tray efficiency ; Some occasions with relatively high flow requirements, such as reactive distillation, serious non-ideal flow will also affect the reaction conversion and selectivity

However, there are not many studies on the influence of the shape of the gas-liquid contact element on the liquid flow on the plate. At present, the most widely used bubble caps, float valves, and sieve trays use a large number of circular and rectangular gas-liquid contact elements. Differential spraying around or on both sides, the existence of gas and liquid flow in the opposite direction, resulting in serious turbulence and stagnation, affecting the continuous improvement of tray efficiency, and increasing the tray pressure drop, limiting production capacity

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