A homogeneous spiral plate fixed-bed reactor for gas-solid catalytic reaction

Abstract

The invention relates to a homogeneous spiral-plate fixed-bed reactor for gas-solid contact catalytic reaction, which includes gas phase and heat exchange medium inlet and outlet, and one or more spiral-plate fixed-bed reaction sections are arranged in the reactor. The advantages of the present invention: 1) significantly increase the shell-side heat transfer coefficient, increase the total heat transfer coefficient, strengthen the heat transfer effect, and reduce the heat transfer temperature difference; 2) the heat transfer distance and heat transfer area can be flexibly controlled, It is beneficial to the uniformity and control of the reaction bed temperature; 3) The volume utilization rate is large (the maximum can reach more than 70%, and the maximum is about 40% for the shell-and-tube reactor), and the production capacity of a single set of equipment is high, and the floor area and investment are significantly reduced ; 4) The heat exchange medium channel has a self-cleaning effect, and is not easy to generate dirt and blockage.

Description

technical field [0001] The invention relates to a fixed-bed reactor, in particular to a homogeneous spiral-plate fixed-bed reactor for gas-solid catalytic reaction. Background technique [0002] Fixed bed catalytic reactors are widely used in chemical industry and petroleum industry. [0003] The advantages of the fixed bed reactor are: ① small back mixing, effective contact between the fluid and the catalyst, and high selectivity when the reaction is accompanied by series side reactions; ② small mechanical loss of the catalyst; ③ simple structure. Its disadvantages are: ①The heat transfer effect of the shell side is poor, especially for strong exothermic reactions, it is prone to runaway temperature (the reaction temperature is out of control, rises sharply, exceeding the allowable range); ②The catalyst cannot be replaced during operation, and the catalyst needs to be frequently regenerated The reaction is generally not suitable for use, and it is often replaced by a fluid...

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

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