Axial and radial reactor of fixed bed with tube bank wall type internal and external barrels

Abstract

The invention discloses an axial and radial reactor of a fixed bed with tube bank wall type internal and external barrels. The axial and radial reactor consists of a pressure-bearing shell, and a catalyst barrel part arranged in the pressure-bearing shell, the catalyst barrel part consists of an internal part bottom support, a catalyst external barrel, a catalyst internal barrel and a catalyst top annular grating, and each of the catalyst external barrel and the catalyst internal barrel comprises a plurality of heat exchange tubes or a plurality of round rods which are distributed circumferentially at intervals. The axial and radial reactor has larger aperture ratio, and avoids catalyst dead zones in bed layers by adopting the catalyst external barrel and the catalyst internal barrel each of which comprises a plurality of heat exchange tubes or a plurality of round rods which are densely distributed circumferentially at intervals, and bed layer resistance reduction is controlled by an opened barrel welded in the catalyst internal barrel. The reactor has the following characteristics of being capable of utilizing the catalysts to the maximum extend, being applicable to small-size catalysts, being convenient to manufacture and large-scale due to simple structure of the internal and external barrels, and being small in resistance reduction when reactive gas flows axially and radially.

Description

technical field [0001] The present invention relates to the field of petrochemical technology, in particular to a fixed-bed gas-solid-phase catalytic reaction device, in particular to a reaction gas passing through the catalyst along the axis and radial direction, and the catalyst is packed in a special inner and outer collection cylinder with exhaust Tube-wall type inner and outer tube fixed bed axial radial reactor, the fixed bed axial radial reactor is especially suitable for synthetic ammonia, CO shift, methanol oxidative reforming hydrogen production, catalytic reforming, ethylbenzene catalytic dehydrogenation to styrene, etc. . Background technique [0002] With the development of chemical production, in order to adapt to different heat transfer requirements and heat transfer methods, a variety of fixed-bed reactor structures have emerged, among which gaseous reaction materials are used to react through a bed composed of solid catalysts. The gas-solid phase catalytic ...

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Problems solved by technology

However, the above-mentioned products have certain defects, such as complex manufacturing, high processing costs, low porosity, and low strength of the inner and outer cylinders.

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