Film spray no-back mixing column plate

Abstract

The invention relates to a film spray non-back-mixing column plate, which comprises two spray covers, a column tray ring and a down-flow plate. A column plate is provided with a raise steam hole, and a down-flow pipe is formed between the down-flow plate and the column plate, wherein a position opposite to the raise steam hole of the column plate is fixedly provided with a top cover through a supporting plate. The bottoms of the spray covers and the column plate are reserved with a gap which forms a channel for liquid to enter the spray cover, and both side walls of the spray covers are provided with spray holes. The film spray non-back-mixing column plate is characterized in that the raise steam hole on the column plate is rectangular, and the part of the raise steam hole is welded with a rectangular raise steam pipe, wherein the upper end of the raise steam pipe is provided with a nozzle; the top cover, the raise steam pipe and the supporting plate form the spray covers; and the space between the two spray covers and the outside of the edges of the spray covers are provided with a liquid guide groove, wherein three surfaces of the liquid guide groove are provided with walls, andone surface of the liquid guide groove is provided with an opening which extends into the down-flow pipe. The film spray non-back-mixing column plate can prevent the liquid from back mixing, and greatly improve mass transfer driving force and the column plate efficiency.

Description

technical field [0001] The invention relates to a column technology for separating chemical reaction and product, in particular to a jet tray used for distillation, absorption, desorption, humidification and heat exchange in the chemical industry, especially a membrane jet non-backmixing tray. Background technique [0002] Patent document ZL9920012.6 discloses a three-dimensional spray gas-liquid contact combination element. The feature of the combination element is that a support plate with a fixed height is left on the bottom edge of the cap, and a fixed bottom gap is formed between the side plate of the cap and the column plate. The combined element is used on the tray column, which can improve the processing capacity of the column equipment, reduce the pressure drop of the tray, improve the operation flexibility and mass transfer efficiency, and reduce the production cost. But this combined element falls back on the tray due to the liquid ejected from the ejection hood,...

AI Technical Summary

Problems solved by technology

But this combined element falls back on the tray due to the liquid ejected from the ejection hood, and the liquid that completes the gas-liquid mass transfer remixes with the liquid on the tray (i.e. back mixing), and then is sucked and lifted by the cap, reducing the The impetus of gas-liquid mass transfer is reduced, which is not conducive to the efficiency of the tray

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