The fermentation tank used for anaerobic fermentation (such as producing alcohol and solvents) can have a relatively simple structure. Fermentation tanks used for aerobic fermentation (such as the production of antibiotics, amino acids, organic acids, vitamins, etc.) require continuous introduction of a large amount of sterile air into the tank, and to consider the utilization rate of the introduced air, the structure of the fermentation tank is relatively complex. Commonly used fermentation tanks include mechanical stirring fermentation tanks, bubble fermentation tanks, and gas lift fermentation tanks.
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