CFD数值模拟用于130m~3气升式内环流发酵罐改造
Modern Chemical Industry(2012)
Abstract
针对130 m3气升式内环流反应器不能满足酵母发酵工艺传质混合要求,以及气含率过高装料系数达不到要求的实际情况,提出在气升式生物反应器上升管中加置内件的改造方案,并采用CFD(computational fluid dynamics)对改造前后的气液传质进行了模拟。模拟结果显示,加置内件可以有效地促进气泡的分散,改善气液两相的混合,强化氧传递过程。改造后,气含率下降,装料系数明显提升,酵母产量得到提升。
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Key words
oxygen transfer,gas hold up,renovation,CFD,internal-loop airlift reactor
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