Supergravity nano-microbubble generating device and reaction system

Abstract

The invention provides a supergravity nano-microbubble generating device and a reaction system. In the device, a liquid phase is a continuous phase, and a gas phase is a dispersed phase; gas enters the interior from a hollow shaft, and primary shearing is carried out on the gas through shearing action of aeration micropores for forming bubbles; then the bubbles are quickly separated from the surface of the rotating shaft under the action of the rotating shaft which rotates at a high speed; and secondary shearing is carried out under the strong shearing force of a super-gravity environment generated by the rotating shaft to form nano-microbubbles. The nano-microbubbles have the advantages of being fast and stable and having a small average particle size, the average particle size of the formed nano-microbubbles is in a range of from 800 nm to 50 microns, and the range of the average particle size of the bubbles can be adjusted and controlled by adjusting the rotating speed of the rotating shaft. According to the device, on one hand, the problem that a liquid phase in a conventional supergravity device is discontinuous and a liquid phase containing nano-microbubbles cannot be formedis solved, and on the other hand, the problem that nano-microbubbles are clustered on the surface of a static microporous medium is solved.

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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