Soaking type screw plate fixed-bed reactor for gas-solid catalytic reaction

Abstract

The invention relates to a soaking type screw plate fixed-bed reactor for a gas-solid catalytic reaction. The soaking type screw plate fixed-bed reactor comprises a gaseous phase and an inlet / outlet of a heat exchange medium; one or more screw plate fixed-bed reaction sections are arranged in the reactor. The soaking type screw plate fixed-bed reactor disclosed by the invention has the advantagesthat firstly, a shell pass heat exchange coefficient is remarkably increased, a total heat transfer coefficient is enabled to be increased, a heat transfer effect is intensified and heat transfer temperature difference is reduced; secondly, heat transfer distance and heat transfer area can be flexibly controlled and uniformity and control of the temperature of a reaction bed layer are facilitated;thirdly, the volume utilization rate is high (the maximum can reach 70 percent or higher, and the maximum of a shell and tube reactor is about 40 percent), the capacity of single equipment is high, and the occupied area and the investment are obviously reduced; fourthly, a heat exchange medium channel has a self-cleaning effect, so that dirt and block are not easily generated.

Description

Technical field [0001] The invention relates to a fixed bed reactor, in particular to a soaking type spiral plate fixed bed reactor for gas-solid catalytic reaction. Background technique [0002] Fixed-bed catalytic reactors are widely used in the chemical industry and petroleum industry. [0003] The advantages of the fixed-bed reactor are: ①The backmixing is small, the fluid can effectively contact the catalyst, and higher selectivity can be obtained when the reaction is accompanied by side reactions in series; ②The catalyst has low mechanical loss; ③Simple structure. The disadvantages are: ①The heat transfer effect in the shell side is poor, especially for strong exothermic reactions, which is prone to flying temperature (the reaction temperature is out of control, rises sharply, and exceeds the allowable range); ②The catalyst cannot be replaced during the operation and the catalyst needs to be regenerated frequently The reaction is generally not suitable for use, often replace...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the technical problems of the existing shell-and-tube fixed bed reactor with poor heat transfer effect on the shell side, low space utilization rate of the catalyst bed, and difficulty in enlarging the device, the present invention provides A homogeneous spiral-plate fixed-bed reactor for gas-solid phase contact catalytic reaction

Images