Horizontal liquid fermentation tank

Abstract

The invention relates to a horizontal liquid fermentation tank, which comprises a tank body, a cooling system, an air inlet system and an exhaust system. The tank body is provided with a liquid inlet and an outlet, an air vent cap and various necessary pipe interfaces. The cooling system at least comprises a cooling device located in the tank body and cooling liquid inlet and outlet pipes connected to the cooling device. The air inlet system includes an air inlet pipe and a gas-liquid mixer communicated with the air inlet pipe. The exhaust system includes an exhaust pipe. The fermentation tank is characterized in that: the cooling device is transversally arranged in the tank body with an annular spiral pipe so as to form a cylindrical structure with two ends open-ended; the gas-liquid mixer is mounted inside the cylindrical structure of the annular spiral pipe, so that the fermentation gas and liquid in the tank body can make inner and outer circulation movement along the annular spiral pipe. The fermentation tank is also provided with a return air system, so that part of the exhaust gas from fermentation can be recycled. Characterized by novel structure, good gas liquid mixing effect, high fermentation efficiency and no need for stirring device, the horizontal fermentation tank can achieve comprehensive energy conservation by 50%-80%, thus being suitable for aerobic microorganism liquid fermentation.

Description

technical field [0001] The invention relates to a fermenter, in particular to a horizontal liquid fermenter for aerobic microorganisms used in large-scale industrial production. Background technique [0002] Usually, the aerobic microbial fermentation tanks are vertical, and there are stirring systems, cooling and heat dissipation systems, and ventilation and exhaust devices inside. With the continuous expansion of industrial mass production fermentation scale, the diameter and height of a single fermentation tank have also doubled. The diameter of the fermenter has increased from 2m to 4m in the past to the current 4m to 10m; the height has increased from the past 5m to 10m to the current 10m to 20m. Since the stirring power is proportional to the square of the diameter of the stirrer, and the ventilation pressure is proportional to the height of the liquid layer in the fermenter, the stirring power doubles and the ventilation pressure rises rapidly after the volume of the...

AI Technical Summary

Problems solved by technology

However, in order to overcome the hydrostatic pressure and transform the pressure energy required for high-speed jet flow, the air inlet pressure is much higher than the pressure required by the ordinary ventilated fermenter with stirring. Consumption rises, one ebbs and the other ebbs and flows, jet flow non-stirring fermenter does not save energy

Moreover, some production bacteria cannot grow and metabolize in the environment of high-speed jet flow, so they cannot be applied, so their practical application range is very limited and needs to be improved.

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