Tube and tube reactor

Abstract

The invention discloses a tubular reactor which comprises a reactor cabinet and a plurality of tubulations arranged in the reactor cabinet at intervals, wherein the reactor cabinet comprises a cabinet body and a horizontal base fixed at the bottom of the cabinet body, and the reactor cabinet is also provided with a reaction material inlet and a reaction product output which are communicated with the plurality of tubulations, wherein at least one tubulation is obliquely arranged relative to the horizontal base. As at least one tubulation in the tubular reactor provided by the invention is obliquely arranged relative to the horizontal base, in the process of filling catalyst, the catalyst can slowly slide in the tubulations with the help of the weight of the catalyst relatively, so that the uniformity of catalyst filler can be provided, the fluidity of the reaction fluid can be improved, the pressure drop can be reduced, the problem of gas attachment generated in the operation of exothermic reaction can be solved, and the heat transfer of the tubulations can be improved, and then the security and reliability of the reactor can be ensured.

Description

technical field [0001] The present invention relates to the field of reactors, in particular to a shell and tube type reactor, and more particularly to a shell and tube type fixed bed catalytic reactor. Background technique [0002] In the chemical industry, a fixed bed reactor refers to a device in which a fluid passes through a fixed bed formed by a solid catalyst to carry out chemical reactions. Fixed bed catalytic reactors are widely used in industrial production, for example, ammonia synthesis, distillate hydrogenation, residue hydrogenation. However, for chemical processes with large heat release, such as FT synthesis, aniline hydrogenation to cyclohexylamine, ethylene oxidation to ethylene oxide, sulfur dioxide oxidation to sulfur trioxide, synthesis gas to methanol, acetylene chlorination to vinyl chloride, benzene Oxidation to maleic anhydride, o-xylene to phthalic anhydride, etc., in order to facilitate heat extraction and stable control during the reaction proces...

AI Technical Summary

Problems solved by technology

In practice, it has been found that even for newly loaded reactors, the pressure drop of the vertical shell-and-tube catalytic reactor is relatively high, and there is a lot of room for improvement in the industrial effect of the reactor.

[0006] In addition, in terms of heat transfer, if high-pressure water and steam are used to obtain heat, due to the influence of the lower tube wall, a large-area gas film will be formed on the outer surface of the vertical tubes, that is, the problem of gas attachment.

As a result, the heat is not easily transmitted, which will eventually not only affect the reaction performance of the chemical production process, but also affect the safety of the reactor

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