A biological fermenter is a tank used for fermentation of dairy products and alcohol, and is also a closed container or biological reaction device for culturing microorganisms or cells. The biological fermentation tank adopts an aseptic system to prevent the product from being polluted by microorganisms in the air, and to ensure the shelf life of the product and the purity of the taste. The bio-fermentation tank is equipped with aseptic breathing holes or aseptic positive pressure fermentation system, allowing the products you store to breathe and ferment in the tank. The tank body is provided with a Milo plate or a labyrinth jacket, which can be heated or cooled by heating or cooling medium.
Biological fermentation tanks are widely used in dairy products, beverage bioengineering, pharmaceuticals, fine-line chemicals and other industries. Dairy products and alcohol are fermented. The tank body and the upper and lower filling heads (or prototypes) are processed by spinning R angle. Mirror polished, no hygienic dead corners, the tank is provided with interlayer and insulation layer, which can be heated, cooled and insulated. The fully enclosed design ensures that the materials are always mixed and fermented in a pollution-free state. The equipment is equipped with air breathing holes, CIP cleaning nozzles, manholes and other devices.
What are the advantages and disadvantages of biological fermenters ?
Main advantage:
1. The structure of the biological fermentation tank is simple, the basic principle is not complicated, and the energy consumption is lower than that of the slurry reactor with a stirring paddle;
2. Relying on gas to generate directional circulation, rather than centrifugal pump type mechanical equipment, the flow form is determined, the liquid circulation is strong, there are no moving parts inside, it has small shear stress, the energy dissipation is very uniform, and it is suitable for shear force sensitive materials. of particular importance;
3. Compared with traditional fermenters, biological fermenters have a much larger range of gas and liquid flow rates that can be operated;
4. The air supply efficiency of the biological fermentation tank is high, and the ventilation in the gas riser can be greater than the air intake of the bubbling reactor, which is conducive to aerobic reactions;
5. The fluidization effect can be solid particles, even heavier particles are completely suspended.
Main disadvantages:
1. The biological fermenter requires a very large air throughput;
2. Poor interphase mixing and contact;
3. The amount of substrates, nutrients and oxygen cannot be kept consistent when the circulating organisms and operating conditions change;
4. Mixing and ventilation are coupling problems, and it is difficult to improve the mixing condition without changing ventilation.
