Novel high-efficiency wall-flow-free structured silk screen filler

Abstract

The invention relates to a novel high-efficiency wall-flow-free structured silk screen filler. Two adjacent structured filler plates are rotatably arranged at an angle of 90 DEG, and the corrugation directions of two adjacent filler plates are opposite and staggered. The upper end and the lower end of each structured filler plate are in arc transition, pressure drop is effectively reduced, and flux is improved. The flow channel is in a broken line shape, the number of broken lines is generally 3-8, gathering of a liquid phase on the tower wall is effectively avoided, and the wall flow phenomenon is eliminated. Besides, the bent part of the filler channel is subjected to arc transition, so that the drastic direction change of the bent part of the channel is avoided, the transition turbulence of the fluid is reduced, and the pressure drop is reduced. Obtuse-angle contact is achieved at the silk screen joint, sharp included angles are avoided, and liquid retention is reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical separation, and relates to a novel structured wire mesh packing. Optimize the structure of the upper and lower ends of the structured packing layer, channel knuckles, and wire contact methods to reduce pressure drop and improve mass transfer efficiency. Background technique [0002] In the 1860s, the Sulzer company in Switzerland used the mold pressing method to press the wire mesh into wire mesh corrugations. The corrugated flow channel is oblique and straight, and there are two angles with the vertical direction, which are 45° and 45° respectively. 30°. Then the wire mesh corrugations are superimposed to prepare the wire mesh corrugated packing. This type of structured packing has had a profound impact on the research and development of subsequent structured packings and has become the structural template for all structured packings. [0003] The oblique linear flow path of the corrugated ...

AI Technical Summary

Problems solved by technology

[0004] However, the mesh corrugated structured packing has gradually revealed a series of problems and shortcomings in the chemical separation process: the porosity of the mesh increases the gas-liquid contact area, and at the same time reduces the difficulty of dealing with complex systems such as high viscosity and easy self-polymerization. capacity, it is easy to form accumulation, and finally lead to tower blockage, affect the normal production, and even cause safety accidents; the complex porous structure of the wire mesh makes cleaning extremely difficult; the mechanical strength of the metal wire of the wire mesh corrugated packing is limited, resulting in the strength of the packing Insufficient, prone to collapse, deflection and dislocation, resulting in drift, channel flow, wall flow, etc.

In addition, the wire mesh corrugated flow channel is obliquely straight, and the liquid phase is easily diverted to the tower wall, causing serious wall flow phenomenon and affecting the packing efficiency.

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