Theoretical And Experimental Studies On Mixing Performance Of The Dynamic Mixer

In today's sosiety, with the rapid development of the industry and social progress, the living standards of people are increasing day by day. But the adverse effects are the excessive consumption of resources and the increased environmental damage, especially in the developing countries which industrial technology is behind the developed countries. And in recent years, the problem is becoming increasingly problematic. Therefore, it is urgent to establish a new type of industrial model which is resource saving and environment friendly. Mixing operation is one of the important steps of the pre-process in chemical production. The mixed results have a direct impact on the productive efficiency and the quality of the products. From this we can know, researching and developing the mixing equipment with high efficiency of mass transfer and less energy consumption is very important.The focus of this study is to understand the liquid-liquid mixing mechanism and to optimize the design of the dynamic mixer. Firstly, this paper introduces the common mixing equipment and its the pros and cons at home and abroad of chemical production. On the basis of former research results, the numerical simulation and visualization experiment of the dynamic mixer are compared, and the reliable numerical simulation method of the dynamic mixer is proposed. From the experimental of view, this discusses the mixing performance of two kinds of liquids at different continuous phase velocities. The experimental results show that different types of rotors have different optimal velocity of continuous phase. So it can choose the suitable rotor according to the different proportion of materials in the industry.Based on the above research and the conclusion of the core component of dynamic mixer in the heat transfer enhancement in the early stage, in this paper, the optimization of the rotor arrangement of the dynamic mixer is carried out. Getting the best combination of the low flow resistance rotors and the spiral ladder rotors by using the simulation method. The effect of mixing is also influenced by the difference of the continuous phase's velocity. The influence of eccentricity of combined rotor during installation on the mixing performance are discussed, summarizes its characteristics, discuss the necessity of installation eccentricity. Because the structure of the dynamic mixer is similar to that of the static mixer, in this paper, the mixing effect of the two kinds of mixers is compared, and the advantages and prospects of the dynamic mixer are discussed from different angles.