Optimal combination of agitators

With the improvement of biochemical technology and the increasing demand of biochemical products, higher and higher requirements are put forward for the large-scale, energy-saving and efficient fermentation tank. The energy consumption of stirrer in fermentation tank accounts for more than half of the whole production line, so it is very important to select the appropriate agitator (size and type combination) for large fermentation tank. The scale-up of agitator is a complex problem related to the technological process. Previously, it can only be scaled up step by step through experience. According to the amplification criteria obtained, it can be extrapolated to industrial scale. With the continuous development of computational fluid dynamics (CFD) technology and high-performance computer, the use of CFD technology to design large-scale fermentation tank has become the main trend.
Tianhui company can design and manufacture all kinds of combined agitators with special requirements, specifications or applications by using CFD software according to the process parameter requirements provided by users.
CFD simulation design can achieve the following effects:
a) The results of CFD numerical simulation are in good agreement with the experimental results, and the deviation is less than 10%. It shows that the mathematical model established in this simulation is effective and can be used for the basic research of optimization design, scale-up and mixing of mechanically stirred reactors.
b) CFD numerical simulation can obtain a lot of information including velocity distribution, flow pattern, solid volume distribution and dispersion degree of mixing effect. It has a detailed and intuitive feature, which can directly provide reference for reactor design and operation.
c) CFD technology, a modern virtual design method, can not only greatly shorten the design cycle and improve the experimental efficiency, but also save a lot of manpower and material resources and reduce the design cost, which has a wide application prospect.

Application area
The research, development and manufacture of mixing equipment in biomedicine, food processing, petrochemical, environmental protection and other industries can be targeted for different industries and working conditions. In recent years, our company has applied computational fluid dynamics (CFD) and computer-aided design technology, combined with the characteristics of fermentation process, carried out technical transformation for the fermentation tank mixing system of well-known domestic enterprises, and achieved good economic and social benefits.