A kind of anti-self-polymerizing rectification column tray

Abstract

The invention discloses an auto-agglutination preventing rectifying tower plate which comprises a plate body. A downflow weir is arranged on the plate body and obliquely arranged in the flowing direction of materials. The downflow weir is obliquely arranged in the flowing direction of the materials, the inclined angle between the downflow weir and the plate body is increased, a unique flow field effect can be formed, therefore, flowing dead corners between the downflow weir and the plate body are removed, and it is avoided that a monomer prone to auto-agglutination stays at the position for a too long time, and consequently auto-agglutination occurs. In addition, the efficiency of the tower plate is not influenced, the defects that the flowing gradient of materials on a weir-free tower plate type plate is large, bubbles of a vapor phase in a liquid phase are uneven, and consequently vapor-liquid contact is not full, the medium transferring effect is poor, and the separation efficiency is low are overcome, and operation flexibility is greatly improved.

Description

Technical field [0001] The invention relates to the field of rectification tower equipment, in particular to a rectification tower tray for preventing self-polymerization. Background technique [0002] The monomers of many polymers are easy to self-polymerize, such as acrylic acid, methyl acrylate, ethyl acrylate, etc. The preparation process of these monomers often requires the separation of rectification towers, and the overflow of the existing rectification tower trays The weir is vertical, which causes a dead angle of flow at the intersection of the overflow weir and the board body, and the monomer residence time is prolonged, so that the monomer accumulates and self-polymerizes, which affects normal production. [0003] In order to prevent self-polymerization of monomers that are easy to self-polymerize in the rectification tower, the most commonly used method is to use non-weir trays or add polymerization inhibitors. [0004] For the first method, the tray has no overflow weir...

AI Technical Summary

Problems solved by technology

[0004] For the first method, there is no overflow weir on the tray, which will cause a large gradient of material inlet and outlet on the tray, and the gas under the tray tends to bubble from the side of the material outlet, resulting in a large decrease in plate efficiency; for the second In this method, too little amount of polymerization inhibitor can not play a role in inhibiting polymerization, and too much amount will affect product quality

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