A high gravity nano-microbubble generating device and reaction system

Abstract

The invention provides a supergravity nano-microbubble generating device and a reaction system. In the device, the liquid phase is a continuous phase, and the gas phase is a dispersed phase. The gas enters the interior through a hollow shaft, and the gas is subjected to shearing action by the aeration micropores. The first shearing forms bubbles, and then the bubbles are quickly separated from the surface of the rotating shaft under the action of the high-speed rotating shaft, and are subjected to secondary shearing under the strong shearing force of the supergravity environment formed by the rotating shaft to form nano-micro bubbles, which are fast, stable, and stable. The advantage of the small average particle size is that the average particle size of the formed nano-micro bubbles is between 800 nanometers and 50 microns, and the average particle size of the bubbles can be controlled by adjusting the rotation speed of the rotating shaft. On the one hand, the device overcomes the problem that the liquid phase is discontinuous and cannot form a liquid phase containing nano-micro-bubbles in the traditional hypergravity device, and on the other hand, it overcomes the problem of the aggregation of nano-micro-bubbles on the surface of the static microporous medium.

Description

technical field [0001] The invention relates to the technical field of reactors, and more specifically, to a device for generating ultra-gravity nano-microbubbles and a reaction system. Background technique [0002] Nano-microbubbles are bubbles with a diameter of nanometers or micrometers. For gas-liquid and gas-liquid-solid reaction processes in which insoluble gases (such as hydrogen, oxygen, etc.) participate, there are often macroscopic reaction rates due to gas-liquid mass transfer limitations. However, the existence of nano-microbubbles can significantly increase the liquid-phase gas holdup and gas-liquid contact area and further improve the gas-liquid mass transfer process to speed up the reaction rate, so it is widely used in petrochemical, fine chemical, coal chemical, biochemical, etc. There are more and more applications in the field. Therefore, it is of great practical application value to develop a device that has a simple structure, can quickly generate a lar...

AI Technical Summary

Problems solved by technology

Above, in industrial production, microporous dispersion is the most common method, which mainly uses micro-mixer or some microporous medium (metallurgical powder, ceramic or plastic as material, and then mixed with appropriate adhesive, at high temperature The microporous structure formed by sintering) forms nano-micro-bubbles, but the nano-micro-bubbles generated by this method usually tend to aggregate on the surface of the microporous medium and form large bubbles, which reduces the gas-liquid contact area between the bubbles and the liquid, and restricts Demonstrated the excellent functions of nano-microbubbles in many fields

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