氨基酸发酵罐内部气液流动特性研究

doi:10.16182/j.issn1004731x.joss.201805047

系统仿真学报 ›› 2018, Vol. 30 ›› Issue (5): 1988-1996.doi: 10.16182/j.issn1004731x.joss.201805047

• 短文 • 上一篇

氨基酸发酵罐内部气液流动特性研究

胡效东, 柳庆磊, 刘馥瑜, 张德新

山东科技大学,山东青岛 266590

收稿日期:2016-07-17 修回日期:2016-10-26 出版日期:2018-05-08 发布日期:2019-01-03
作者简介:胡效东(1971-),男,山东,博士,副教授,研究方向为化工设备先进制造技术;柳庆磊(1990-),男,山东,硕士,研究方向为动力工程;刘馥瑜(1991-),男,硕士,山东,研究方向为化工过程机械。
基金资助:
山东省自然科学基金(ZR2014EEM018)

Gas-liquid Flow Characteristics Study on the Amino Acid Fermentation Tank

Hu Xiaodong, Liu Qinglei, Liu Fuyu, Zhang Dexin

Shandong University Of Science and Technology, Qingdao 266590, China

Received:2016-07-17 Revised:2016-10-26 Online:2018-05-08 Published:2019-01-03

摘要/Abstract

摘要： 基于Euler-Euler双流体模型和群体平衡模型,应用多重参考坐标系(MRF)方法,运用Fluent分析发酵罐内由圆盘涡轮式搅拌器和翼型轴流式的三层搅拌器内部的流体特性,计算发酵罐内部的氧气气含率及气泡大小。结果表明:上两层搅拌器产生轴向流动,最下层搅拌器产生径向流动,相互作用形成循环流场。氧气分布比较均匀,在搅拌轴和换热管附近有氧气集中的现象;罐内部的整体气含率为2.22%,模拟计算得到发酵罐的搅拌功率为117.81 kW。采用计算流体动力学方法对发酵罐的研究结果具有工业应用价值,而在研究过程中用到的理论方法在解决问题时具有一定的理论意义。

关键词: 氨基酸发酵, 欧拉模型, 多重参考坐标系, 气含率, 群体平衡模型

Abstract: Based on the Euler - Euler two-fluid model and population balance model, using MRF (multiple reference frame) method, the flow field of the rushton turbine stirred reactor and airfoil axial flow stirred reactor in fermentation tank is analyzed by Fluent. The information of the oxygen content and the size of bubble in the tank is obtained. The simulation results show that the axial flow produced by the airfoil axial flow stirred reactor and the radial flow produced by the rushton turbine stirred reactor interact with each other. The oxygen distribution is relatively uniform. There is an oxygen concentration near the mixing shaft and heat exchanger tube. The overall gas holdup is reached to 2.22%. The stirring power of the fermentation tank calculated by the simulation is 117.81 kW. The results of computational fluid dynamics (CFD) on fermentors are of industrial application value. The theoretical method used in the research has certain theoretical significance in solving the problems.

Key words: amino acid fermentation, Euler model, multiple reference frame, gas holdup, population balance model

中图分类号:

TP391.9

胡效东, 柳庆磊, 刘馥瑜, 张德新. 氨基酸发酵罐内部气液流动特性研究[J]. 系统仿真学报, 2018, 30(5): 1988-1996.

Hu Xiaodong, Liu Qinglei, Liu Fuyu, Zhang Dexin. Gas-liquid Flow Characteristics Study on the Amino Acid Fermentation Tank[J]. Journal of System Simulation, 2018, 30(5): 1988-1996.

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氨基酸发酵罐内部气液流动特性研究

Gas-liquid Flow Characteristics Study on the Amino Acid Fermentation Tank

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