Multitubular fixed bed reactor and application thereof

Abstract

The invention relates to a multitubular fixed bed reactor, which comprises at least one catalyst-loaded reaction tube longitudinally extending along a direction parallel to the axis of the reactor. The height of the reaction tube and the hydraulic diameter of the reaction tube's cross-section are in a ratio of 1-2000, preferably 10-1000, and more preferably 50-500. The reaction tube includes: one or more catalyst chambers, which are used for loading the catalyst to form a catalyst fixed bed; one or more inlet distribution chambers, which are used for leading a reactant flow into the reaction tube and distributing the reactant flow into the catalyst fixed bed; and one or more outlet collection chambers, which are used for collecting the reactant flow and leading the reactant flow out of the reaction tube. Specifically, through arrangement of the inlet distribution chamber(s) and the outlet collection chamber(s), the reactant flow passes through the catalyst fixed bed layer along a horizontal direction perpendicular to the axis of the reactor so as to contact the catalyst and react with the catalyst. The invention also relates to application of the multitubular fixed bed reactor in chemical reactions like endothermic or exothermic reaction.

Description

technical field [0001] The invention relates to a novel tubular fixed-bed reactor and the application of the tubular fixed-bed reactor in chemical reactions such as endothermic or exothermic reactions. Background technique [0002] The tubular fixed-bed reactor is a commonly used reactor in the chemical industry. It is generally used in the process of gas-phase or liquid-phase reactions catalyzed by solid catalysts. The catalyst forms a fixed bed, and the reactant stream passes through the fixed bed to react. [0003] The tubular fixed bed reactor is generally composed of a plurality of reaction tubes connected in parallel, and a catalyst fixed bed is generally arranged in the reaction tube, and the gas and / or liquid reactant flow passes through the catalyst fixed bed along the axial direction of the reaction tube, It contacts with the catalyst and reacts therein, while the heat carrier flows through the reaction tubes for heating or cooling. Therefore, the tubular fixed-be...

AI Technical Summary

Problems solved by technology

[0004] The limitation of the tube-and-tube fixed-bed reactor is that the heat transfer is poor, and hot spots are usually generated, which leads to uneven reaction temperature, shortened service life of the catalyst, and low efficiency; in addition, considering that the reaction fluid passes through the catalyst fixed bed When the pressure drop, the reactor load is generally low, resulting in limited production capacity of a single reactor

These shortcomings limit the application of tubular fixed bed reactors

[0005] In the prior art, people have been trying to obtain a better shell-and-tube fixed-bed reactor to solve the problems of heat transfer, pressure drop, efficiency and manufacturing cost of the shell-and-tube fixed-bed reactor

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