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2022

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Brief introduction and basic parameters of chemical reactor

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Chemical reactor is the equipment for realizing the reaction process, which is widely used in chemical industry, oil refining, metallurgy, light industry and other industrial sectors. Chemical reactor takes the reaction process carried out in the industrial reactor as the research object. The types of common reactors are:

Chemical reactor is the equipment for realizing the reaction process, which is widely used in chemical industry, oil refining, metallurgy, light industry and other industrial sectors. Chemical reactor takes the reaction process carried out in the industrial reactor as the research object. The types of common reactors are:

Chemical reactor
① Tubular reactor. It is composed of an empty tube or a filled tube with a relatively large length and diameter, which can be used to realize gas-phase reaction and liquid-phase reaction.
② kettle reactor. It is composed of a cylindrical container with a relatively small length and diameter, and is often equipped with a mechanical stirring or airflow stirring device.
Liquid-phase single-phase reaction process and liquid-liquid phase, gas-liquid phase, gas-liquid-solid and other multi-phase reaction processes. For the gas-liquid phase reaction process, it is called a bubbling stirred tank (see bubble reactor); for the gas-liquid solid phase reaction process, it is called a stirred tank slurry reactor.
③ A reactor with a bed of solid particles. Gases or (and) liquids pass through a fixed or moving bed of solid particles to achieve a multiphase reaction process, including fixed bed reactors, fluidized bed reactors, moving bed reactors, trickle bed reactors, and the like.
④ tower reactor. Tower equipment used to realize gas-liquid phase or liquid-liquid phase reaction process, including packed tower, tray tower, bubble tower, etc. (see color picture).
⑤ Jet reactor. It is a device that uses an injector for mixing to realize gas-phase or liquid-phase single-phase reaction processes and gas-liquid phase, liquid-liquid phase and other multi-phase reaction processes.
⑥ Various other atypical reactors. Chemical reactor is the key equipment in the chemical production process, which determines the quality, variety and production capacity of chemical products. The tank-type stirring reactor is a commonly used equipment.
At present, there are two types of tank reactors commonly used in chemical production: vertical and horizontal. The thermal conductivity of the spherical reactor is about 1.5 times that of the cylindrical reactor. At the same time, due to the universal symmetry of the spherical body spatial distribution. The reaction kettle can be used in three ways: vertical and horizontal. In terms of structural force, it is especially suitable for high temperature, high pressure, and large-volume equipment. It is easy to serialize and large-scale. In addition, the spherical kettle is more convenient for cleaning the kettle wall. The structure of the kettle body is all cylindrical. The flow pattern of the fluid medium in the kettle is not completely homogeneous. There is even a dead angle of the reaction. It has an adverse effect on the heat transfer and mass transfer of the reaction medium.

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