Stirring/flow-guiding multi-phase reactor

Abstract

The present invention provides a stirring / guide multi-phase reactor, comprising a cylindrical sealed shell, a guide cylinder, a stirring device, air inlet device and an air outlet device; wherein, the cylindrical sealed shell is provided with a material inlet and outlet device; the lower part inside the shell is provided with the guide cylinder with an external diameter smaller than the internal diameter of the shell, a clearance is left between the guide cylinder and the shell bottom; the stirring device is arranged in the clearance between the guide cylinder and the shell bottom and comprises a stirring shaft and a blade fixed on the stirring shaft; the stirring shaft passes through the shell bottom and extends out of the shell; the air inlet device is arranged on the shell bottom and / or a lateral wall and the air outlet of the air inlet device is arranged below the blade; the air outlet device is arranged on the shell top. The stirring / guide multi-phase reactor provided by the present invention, which adopts the combination of the bottom-type stirring device and the guide cylinder, only needs comparatively low energy consumption to reach and even surpass the air rate the multi-layer or single-layer stirring reactor requires a plurality of times of energy consumption. Due to short mixing period and high effective energy utilization, the reactor is suitable for various industrial processes.

Description

technical field [0001] The invention relates to a reactor, in particular to a novel heterogeneous reactor, in particular to a stirring device in the reactor and a draft tube arranged in the reactor. Background technique [0002] Multiphase reactor is a kind of reactor widely used in the field of chemical industry. For example, in process industries such as methanol synthesis, oxidation, hydrogenation, sewage treatment, Fischer-Tropsch synthesis, and biological fermentation, multiphase reactors are required. . [0003] In the so-called heterogeneous reactor, the reaction raw materials and reaction products include gas, liquid and solid. Therefore, for this type of reaction process, the requirements for gas dispersion, raw material mixing, interphase transfer, solid phase suspension and its distribution are quite high. At present, multi-phase reactors commonly used in industry include multi-layer mechanically stirred reactors, three-phase fluidized beds, slurry beds, internal...

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Problems solved by technology

However, practice has proved that the effect of this method is not ideal, and it cannot fully meet the needs of the reaction, and the baffle is too narrow, and the mixing of the materials in the reactor is not uniform enough; the inventor discloses a method suitable for aromatic The reactor for hydrocarbon oxidation to produce aromatic carboxylic acid, although the reactor structure has been fully adjusted, the mixing and dispersion effect of the three-phase system has been significantly improved, and the gas holdup in the reaction system has been increased, but there is still a defect of large power consumption

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