Regular catalyst packing for reactive distillation column

Abstract

The invention discloses a regular catalyst packing for a reactive distillation column. The regular catalyst packing is composed of a component (A) and a component (B), wherein the component (A) and the component (B) are arrayed alternatively and then banded by a banding piece; the component (A) is composed of a plurality of corrugated packing pieces with meshed structure or pore canal structure; the component (B) is a cloth bag evenly sewed and filled with particle solid catalysts; in each regular catalyst packing, the component (A) and the component (B) are arranged alternatively; the corrugated inclination direction of each two adjacent corrugated packing pieces are reverse. By utilizing the corrugated packing pieces, the whole catalyst packing layer can have enough passage, the gas and liquid can be distributed better in the column, and the dead area and uneven flow of liquid are avoided; by utilizing the catalyst cloth bag, the use amount of catalyst can be reduced; with the combination of the corrugated packing pieces and the catalyst cloth bag, the contact time of the reactant and catalyst is longer, so the reactive distillation process is performed efficiently. Meanwhile, the regular catalyst packing is easy to manufacture and convenient to assemble and disassemble, and the requirements of industrial production can be met.

Description

technical field [0001] The invention belongs to the technical field of reactive distillation, and in particular relates to a high-efficiency structured catalytic packing suitable for reactive distillation towers. Background technique [0002] Reactive distillation is a process of reaction and separation at the same time, so the packing in the reactive distillation column needs to have two functions at the same time: catalytic function and gas-liquid mass transfer function, so as to separate the product during the reaction and promote the reaction to continue to increase conversions. Among them, the packing structure in the tower has a great influence on the efficiency of the reactive distillation process. The packing used in industry is mainly divided into random packing and structured packing. Random packing is placed directly in the tower, and its pressure drop is relatively large. The layer is easy to block; while the structured packing requires a balance between the cat...

AI Technical Summary

Problems solved by technology

However, this kind of packing has the following disadvantages: (1) The particle size of catalyst particles and porous inert balls is generally small, which is easy to cause plugging of the packing layer in the tower; (2) When the metal box structure is placed in the tower, it is not tight enough, which is easy to cause Phenomena such as channel flow and short circuit of the liquid in the tower

Although this structure eliminates the problems of liquid channeling and short circuit, it has the disadvantages of large catalyst bed resistance and small processing capacity of catalytic distillation tower.

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