Circulation degassing fluidized bed bioreactor

Abstract

The invention relates to the field of alcohol fermentation, in particular to a circulation degassing fluidized bed bioreactor which can improve fermentation efficiency and shorten fermentation period.The bioreactor comprises a reactor body, a gas circulation system and a liquid circulation system, three baffle plates with a certain height and angle and three anti-aeration plates with a certain height and angle are arranged inside the reactor body along the height direction, and immobilized particles move upwards under thrust of gas and liquid and under the buoyancy action of bubbles generatedby the immobilized particles and collide with the baffle plates to realize gas-solid separation. Liquid-solid separation is realized within a circulation area formed among the baffle plates and the anti-aeration plates. By changing hydraulic paths of gas, liquid and solid, particle loss is effectively decreased, the volume load of the bioreactor is improved, and the fermentation period is shortened. The bioreactor is simple in structure and low in manufacturing cost and has a wide popularization and application prospect in industries such as alcohol fermentation.

Description

technical field [0001] The invention relates to the field of alcohol fermentation, in particular to a circulating degassing fluidized bed bioreactor. Background technique [0002] The use of immobilized yeast fluidized bed bioreactor to ferment alcohol not only has the advantages of fast speed, high yield, and easy realization of automatic production, but also has the characteristics of reusable microorganisms and small equipment footprint. Among them, the three-stage fluidized bed bioreactor is widely used. The current three-stage fluidized bed bioreactor has a complex structure and is mainly composed of three spindle-shaped fermentation chambers. The particles are degassed by colliding with the inner wall of the fermentation chamber, and the degassing effect is poor; when the particles move between the fermentation chambers, they are The force is strong and the crushing is serious. At the same time, the upflow and backflow of particles affect each other, resulting in unev...

AI Technical Summary

Problems solved by technology

The current three-stage fluidized bed bioreactor has a complex structure and is mainly composed of three spindle-shaped fermentation chambers. The particles are degassed by colliding with the inner wall of the fermentation chamber, and the degassing effect is poor; when the particles move between the fermentation chambers, they are The force is strong and the crushing is serious. At the same time, the upflow and backflow of particles affect each other, resulting in uneven particle distribution. The fermentation reaction is mostly concentrated in the first unit, and the second and third units have less particle distribution, and the reaction effect is poor.

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