Catalytic reactor suitable for strong exothermic volume reduction

Abstract

The invention provides a catalytic reactor suitable for strong exothermic volume reduction and relates to a catalytic reactor. The axis of the reactor adopts a U-shaped structure; the U-shaped axis isan inner air cylinder; a catalyst bed layer I (6), a catalyst bed layer II (5), a catalyst bed layer III (3), a gas distribution cylinder (2) and an outer air cylinder (1) are arranged at the periphery of the inner air cylinder (7) symmetrically from inside to outside; a gas inlet (4) is formed in the outer part communicated with the outer air cylinder (1); a heat exchange tube (8) is arranged inthe catalyst bed layer III (3); the reaction raw materials enter the catalyst bed layers along the periphery of the reactor and are discharged from the center of the reactor; the change of the gas volume and the flow channel area is matched; the quantity of reaction occurring at different radial positions is regulated and controlled; gradient filling of the catalyst is matched; heat of the tube bundles in the catalyst bed layers is transferred gradiently; and bed layer reaction heat balancing and heat exchange tube bundle heat transfer are completed. The reactor is particularly suitable for places of strong exothermic volume reduction reaction to realize uniformization of bed layer gas flow speed and bed layer temperature.

Description

technical field [0001] The invention relates to a catalytic reactor, in particular to a catalytic reactor suitable for volume reduction of strong heat release. Background technique [0002] Fixed-bed reactors are widely used in gas-solid phase catalytic reactions in the chemical industry. For reactions with strong exothermic and volume reduction such as Fischer-Tropsch synthesis, ammonia synthesis, methanation, etc., traditional fixed-bed reactors have limited transfer Thermal properties lead to a certain temperature difference between the axis and the radial direction of the catalyst bed, which in turn leads to the formation of local hot spots in the catalyst bed or the overheating of the catalyst bed, causing catalyst sintering and even deactivation. In addition, the traditional fixed-bed reaction design also has the disadvantage of large pressure drop when the reactant gas passes through the catalyst bed. [0003] In the industrial tube-and-tube reactor, the catalyst is ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a catalytic reactor suitable for strong exothermic volume reduction. The present invention solves the problem of large pressure drop and slow removal of heat of reaction when raw material gas passes through the catalyst bed during the catalytic reaction process of strong exothermic volume reduction. As well as the problem of large temperature difference in the catalyst bed, a radial reactor suitable for catalytic reactions with strong exothermic volume reduction is provided

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