A Method for Enhancing Mixing Performance in Rotating Packed Beds Based on Liquid Distributors with Superhydrophobic Surfaces

Abstract

The invention discloses a method for strengthening the mixing performance of a rotating packed bed based on a liquid distributor with a superhydrophobic surface. The rotating packed bed is suitable for a system containing liquid in the raw material, and a superhydrophobic coating is modified on the surface of the liquid distributor of the rotating packed bed. The liquid distributor has a super-hydrophobic surface, the raw material does not adhere to the surface of the liquid distributor after flowing out from the outlet of the liquid distributor, and the raw material flows into the rotating packed bed in a continuous state, thereby strengthening the mixing effect of the rotating packed bed on the raw materials. The present invention realizes that the wettability of the solid surface can affect the flow of the liquid in the rotating packed bed, and the flow of the liquid in the rotating packed bed affects the mixing performance of the rotating packed bed. The present invention modifies the superhydrophobic coating on the surface of the liquid distributor , to improve the fluidity of the liquid in the rotating packed bed, and then improve the mixing effect of the rotating packed bed on the liquid. The rotary packed bed of the invention is expected to be applied in chemical preparation in the field of biomedicine and laboratory miniature experiments.

Description

technical field [0001] The invention belongs to the technical field of reactors, in particular to a method for enhancing the mixing performance of a rotating packed bed based on a liquid distributor with a superhydrophobic surface. Background technique [0002] Mixing is a common chemical unit operation. It refers to the process of dispersing different materials with different composition concentrations by stirring or kneading, and finally making the component concentrations tend to be uniform. Among them, microscopic mixing, as a molecular-scale mixing, is closely related to chemical reactions at the molecular level. The quality of microscopic mixing directly affects the conversion rate and the quality of reaction products. For production processes involving complex and rapid chemical reactions, the use of process intensification methods can improve product quality and reduce production energy consumption. Therefore, it is particularly important to develop a method to enha...

AI Technical Summary

Problems solved by technology

However, in the field of biomedicine, the process involved in the preparation of chemicals and laboratory micro-scale experiments has the characteristics of high raw material prices and low liquid flow rate. When the raw material liquid flows out from the outlet of the liquid distributor, due to the metal material on the surface of the liquid distributor. Hydrophilic, the liquid is easy to adhere to the surface of the liquid distributor, the flow is resisted, and after accumulating to a certain extent, it will drip in the form of droplets, causing the raw material liquid to flow discontinuously when it flows out of the outlet of the liquid distributor, showing a drop shape flow

When the liquid is in this flow state, the flow velocity at the inner edge of the incident rotor is small, the degree of turbulence of the liquid is reduced, and the mixing between the liquids is insufficient, which reduces the mixing performance of the rotating packed bed and affects the quality of the prepared product and the accuracy of the micro-scale experiment. Experimental effects, which limit the application of rotating packed beds in this field

Images