Uniform heating type spiral plate fixed bed reactor for gas-solid catalytic reaction

Abstract

The invention relates to a uniform heating type spiral plate fixed bed reactor for a gas-solid catalytic reaction. The uniform heating type spiral plate fixed bed reactor for a gas-solid catalytic reaction comprises a gas phase inlet, a gas phase outlet, a heat exchange medium inlet and a heat exchange medium outlet; one or more spiral plate fixed bed reaction sections are arranged in the reactor.The uniform heating type spiral plate fixed bed reactor for the gas-solid catalytic reaction has the advantages that: (1) a shell pass heat exchange coefficient is remarkably increased, so that the total heat transfer coefficient is increased, a heat transfer effect is enhanced, and the heat transfer temperature difference is reduced; (2) the heat transfer distance and the heat transfer area canbe controlled flexibly, which is beneficial to the uniformity and the control of the temperature of a reaction bed layer; (3) the capacity utilization rate is highest (the highest capacity utilizationrate can reach 70 percent or above, and the highest capacity utilization rate of a shell and tube reactor is about 40 percent), the capacity of a single set of equipment is high, and the occupied area and the investment are remarkably reduced; (4) a heat exchange medium channel has a self-cleaning effect, and dirt and blockage are not produced easily.

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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