Airlift internal loop slurry-bed reactor

Abstract

The invention discloses an airlift internal loop slurry-bed reactor. The airlift internal loop slurry-bed reactor comprises a shell, a guide cylinder, a gas distributor, a gas-liquid separation apparatus, a bottom inlet, a top outlet and a slurry bed layer, the gas-liquid separation apparatus, the guide cylinder and the gas distributor are arranged in the shell from up to down in order, the annular space of the guide cylinder and the inner wall of the shell are filled with the slurry bed layer, and the guide cylinder comprises an upper baffling section and a lower straight-tube enclosing section. According to the invention, the upper part of the guide cylinder is designed as a baffling communication section, the gas-liquid separation effect of the reactor is increased, circulation of a slurry in the guide cylinder and the slurry out of the guide cylinder is promoted, so that the problems that when the operating gas velocity is high, the slurry back-mixing and mist entrainment are generated can be avoided, the reaction efficiency, purity of the products and the stability of a catalyst are indirectly increased, and the energy consumption and investment of the reactor are reduced.

Description

technical field [0001] The invention relates to the field of chemical equipment and devices, in particular to a slurry bed reactor used for gas-liquid two-phase or gas-liquid-solid three-phase reaction, more specifically, to a kind of internally designed baffled flow guide Flow tube slurry bed loop reactor. Background technique [0002] In the chemical industry, bioengineering and other fields, the gas-liquid-solid three-phase reaction system of gaseous, liquid and solid reaction materials is a very important system, and bubble reactors are usually used. In order to reduce back-mixing and improve reactor efficiency, air-lift loop reactors are often used in biological gas-liquid absorption reactions, Fischer-Tropsch synthesis, and methanol synthesis. For example, the Chinese invention with patent number 99127184.X The patent discloses a gas-liquid-solid three-phase circulation reactor; the Chinese invention patent No. 03151109.0 discloses a continuously operated gas-liquid-s...

AI Technical Summary

Problems solved by technology

Therefore, when the slurry is turned into the guide tube, the gas-liquid separation is poor. On the one hand, the gas will be entrained into the guide tube, and the lift force of the gas will hinder the downward circulation of the slurry, which will significantly affect the reaction efficiency. On the other hand, when the gas rises Slurry entrainment will cause severe mist entrainment at the top of the reactor, making it difficult to separate the product, and at the same time lead to high energy consumption of the separation device

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