Impeller, multiphase flow reactor and multiphase flow continuous reaction system

Abstract

The invention relates to an impeller, a multiphase flow reactor and a multiphase flow continuous reaction system. The impeller comprises a circular base plate, a core shaft seat formed at the center of the base plate, a shaft hole formed in the middle of the core shaft seat and a plurality of blades integrally connected with the base plate, wherein the blades are uniformly distributed on the front end surface of the base plate in an involute manner by taking the core shaft seat as the center; through holes are formed in the base plate and at the position between every two adjacent blades; the multiphase flow reactor comprises a shell, a motor, a shaft penetrating through the shell and is connected with the power output end of the motor through a coupling and the impeller positioned in the shell and connected onto the shaft; a medium inlet is formed in the middle of the front end of the shell; a medium outlet is formed in the side surface of the rear end of the shell; a medium flow channel for communicating the medium inlet and the medium outlet is arranged in the shell; the multiphase flow continuous reaction system comprises two multiphase flow reactors or one multiphase flow reactor and one reaction still. The impeller, the multiphase flow reactor and the multiphase flow continuous reaction system are applicable to gas-liquid-solid three-phase mixing and reaction and fluid transportation, the operation is stable, and the application range is wider.

Description

technical field [0001] The invention relates to the technical field of chemical reactors, in particular to an impeller, a multiphase flow reactor and a multiphase flow continuous reaction system. Background technique [0002] In chemical production, it is often encountered that there are three phases of gas, liquid and solid. Traditional gas-liquid-solid three-phase reactors include slurry stirred tank reactors, jet circulation reactors, slurry bubble bed reactors, three-phase fluidized bed reactors, packed bubble bed reactors and trickle bed reactors. reactor. Among them, the slurry stirred tank reactor utilizes one or more rotating stirring paddles to realize the effective contact of the gas-liquid-solid phase. Usually it uses a much smaller catalyst particle size than trickle bed reactors. By changing the type and speed of the stirrer, the design of the slurry stirred tank reactor is very difficult, and at the same time, its application is largely limited due to the am...

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Problems solved by technology

[0004] Compared with conveying liquid, the performance of the pump decreases when conveying gas-liquid multiphase flow, which is mainly caused by the retention of air bubbles in the impeller, because the stagnant air bubbles reduce the cross-sectional area of ​​the flow channel and increase the relative velocity of the liquid flow, thereby increasing The loss of flow will lead to damage or unstable operation of the pump. When the air content increases, the air bubbles in the middle of the impeller will become more and more, which will eventually hinder the suction of the liquid and cause the outlet to fluctuate. Therefore, the general centrifugal pump cannot meet the requirements of such working conditions. Stable operation under certain conditions, other forms of containers have problems in this regard

[0005] In the prior art, the functions of reactors and pumps are different, and under different working conditions, the scope of application of reactors and pumps is also affected, which brings many difficulties to production

In the prior art, there is no chemical production equipment that combines the functions of the reactor and the pump, is suitable for gas-liquid-solid three-phase mixing, reaction and fluid transportation, and has a wide range of applications.

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