改良型气举生物反应器内部混合和流动的 CFD 模拟研究

IF 1.6 4区 工程技术 Q3 Chemical Engineering
Zeng Lingwei, Zhenpeng Li, Li Jun, Dongmei Yan, Fuchuan Huang
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引用次数: 0

摘要

气提生物反应器应用于工业发酵领域时,由于结构简单,普遍存在混合和流动效率低的问题。为了扩大气提生物反应器在工业发酵领域的应用,设计了一种新型气提生物反应器,在引流管中设置了三维凸块,以增强反应器中气液两相的混合和流动。为了确定三维凸块对反应器内部流场的具体影响,并为气举生物反应器结构的改进提供技术参考,本文对该类型生物反应器进行了 CFD 模拟。以欧拉多相流为基础,以气液平均流动线速度和温度为参数,采用可实现k-ε模型对反应器流场进行分析。结果表明,在一定条件下,引流管内的三维凸起能有效加速气液两相流,更好地促进猪粪发酵液与空气的混合。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
CFD simulation study of internal mixing and flow of a modified airlift bioreactor
When the airlift bioreactor is applied to the field of industrial fermentation, there is a common problem of low mixing and flow efficiency due to its simple structure. In order to expand the application of airlift bioreactor in the field of industrial fermentation, a new type of airlift bioreactor with three-dimensional bumps in the draft tube has been designed to enhance the mixing and flow of gas-liquid two-phase in the reactor. In order to determine the specific influence of the three-dimensional bumps on the internal flow field of the reactor, and to provide technical reference for the improvement of the structure of the airlift bioreactor, in this paper, the CFD simulation of this type of bioreactor is carried out. Based on the Euler multiphase flow, the Realizable k-ε model was used to analyze the flow field of the reactor with average gas-liquid flow linear velocity and temperature as parameters. The results show that under certain conditions, the three-dimensional bumps inside the draft tube can effectively accelerate the gas-liquid two-phase flow and better promotes the mixing of pig manure fermentation broth and air.
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来源期刊
CiteScore
2.80
自引率
12.50%
发文量
107
审稿时长
3 months
期刊介绍: The International Journal of Chemical Reactor Engineering covers the broad fields of theoretical and applied reactor engineering. The IJCRE covers topics drawn from the substantial areas of overlap between catalysis, reaction and reactor engineering. The journal is presently edited by Hugo de Lasa and Charles Xu, counting with an impressive list of Editorial Board leading specialists in chemical reactor engineering. Authors include notable international professors and R&D industry leaders.
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