Method for measuring liquid level of fermentation tank

Abstract

The invention discloses a method for continuously measuring a liquid level of a fermentation tank. The method is implemented by measuring the average density correction factor k. By using the measurement method, the liquid level height of the fermentation tank and the liquid level variation rate of the fermentation tank can be monitored during the whole course, defoaming can be more scientifically carried out, i.e. a defoamer can be used more properly with less amount, thus no liquid escaping phenomenon is generated, the liquid surface can be in the highest safe height, and the advantages of improving fermentation unit, relieving subsequent extraction process load and providing and reducing energy consumption is obvious.

Description

technical field

[0001] The invention belongs to the field of fermentation, and more specifically relates to a method for measuring the liquid level of an aerobic (ventilated) fermentation tank.

[0002] Aerobic fermentations must have foam due to aeration. The scope of application of this technology is that the bubbles are evenly distributed into the fermentation liquid, excluding the occasions where the bubbles float on the surface of the liquid and have an obvious gas-liquid interface. Background technique

[0003] The liquid level of the fermenter refers to the height of the fermentation liquid in the fermenter. In actual production, due to the change of oxygen supply and ventilation, various liquids are constantly replenished, especially the change (consumption and production) of the fermentation broth composition changes the surface tension of the liquid, and finally changes the gas / liquid volume ratio. As the gas / liquid volume ratio becomes larger, the liquid level i...