自吸式反应器的数值模拟及在酵母发酵中的应用

CFD simulation of gas-inducing reactor and its application in yeast production

采用计算流体力学(CFD)模拟和酵母发酵实验相结合的方法,研究自吸式反应器内的气液两相流动及传质。基于对自吸式反应器内流体流动、气液相际传质的研究,采用加置气体分布器的方法强化自吸式反应器内流体力学传递性能,并将数值模拟结果应用于酵母发酵。结果表明:在相同的培养条件下,加装气体分布器的自吸式反应器培养酵母比无气体分布器的自吸式反应器产率平均提高23.64%。

The gas-liquid two-phase flow and mass transfer in the self-inducing reactor were studied in terms of the computational fluid dynamics （CFD） simulation and experiments of yeast fermentation. CFD results showed that fluid flow and gas-liquid mass transfer in gas-inducing reactor were strengthened with the adding of the gas distributor. For yeast fermentation at the same process conditions, the average yield increased by 23.64% in self-inducing reactor with the gas distributor.