The main body of stainless steel tank is the main cylinder made of stainless steel plate, whose volume is from 1 m3 to hundreds of m3. In design and processing, attention should be paid to the rigorous structure, reasonable, and industrial equipment for microbial fermentation. Stainless steel tanks need to be filled with plenty of air to meet microbial aerobic requirements, so the larger the air inflow is.
　　The main body of stainless steel tank is the main cylinder made of stainless steel plate, whose volume is from 1 m3 to hundreds of m3. In design and processing, attention should be paid to the rigorous structure, reasonable, and industrial equipment for microbial fermentation.
　　Stainless steel tanks need to be filled with plentiful air to meet microbial aerobic requirements. Therefore, the larger the air volume, the more oxygen microbes can get. Secondly, the higher the height of the culture medium, the longer the air residence time in the culture medium will be, which is beneficial for microorganisms to utilize oxygen in the air. However, oxygen in air is transmitted to microorganisms through culture medium. The transfer rate depends largely on the mass transfer area of gas and liquid phase, that is to say, the size of bubbles and the residence time of bubbles. The smaller and more dispersed bubbles, the more abundant oxygen can be obtained by microorganisms.
　　The stirring of stainless steel fermenter can make microorganisms get enough oxygen and nutrients in the culture medium everywhere in the tank as far as possible. In addition, good stirring is conducive to the heat generated by the fermentation process of microorganisms transferring to the cooling tube and the cooling inner surface of the fermenter. This is the reason why stainless steel tanks with ventilation and stirring are widely used in biochemical engineering.
　　Stainless steel tanks are usually equipped with several radial disc turbine agitators, but it is easy to stratify the stirred medium to form several zones, thus forming oxygen partial pressure gradient between the lower and upper parts of the tank, resulting in the difference of KLa values between the upper and lower parts of the tank. For more information about stainless steel tanks, please continue to pay attention to our website.