The main body of a stainless steel storage tank is generally a main cylinder made of stainless steel plates, with a volume of1m3to hundredsm3, in the design and processing, attention should be paid to the strict and reasonable structure of the device used for industrial microbial fermentation.

       The equipment needs to introduce sufficient air to meet the aerobic requirements of microorganisms. Therefore, the greater the amount of air introduced, the more oxygen the microorganisms are likely to obtain. Secondly, the greater the height of the culture liquid layer, the longer the residence time of air in the culture medium may be increased, which is beneficial for microorganisms to utilize oxygen in the air. However, oxygen in the air is transferred to microorganisms through the culture medium. In large cases, the transfer rate depends on the mass transfer area of ​​the gas-liquid phase, that is to say, it depends on the size of the bubbles and the residence time of the bubbles. The smaller and more dispersed the bubbles, the more abundant the microorganisms can obtain oxygen.

       As much as possible, the microorganisms can obtain sufficient oxygen and nutrients in the culture medium everywhere in the tank. In addition, good stirring is conducive to the transfer of heat generated during the microbial fermentation process to the cooling tubes and the cooling inner surface of the fermentation tank. This is why equipment with ventilation and stirring is commonly used in biochemical engineering.

       stainless steel storage tankUsually several radial disc turbine agitators are installed, but it is easy to stratify the stirred medium to form several zones, thus forming an oxygen partial pressure gradient between the lower and upper parts of the tank, resulting in a gap between the upper and lower parts of the tank.KLavalue difference.