圆盘涡轮搅拌器的气液混合特性CFD分析  

CFD analysis of gas-liquid mixing characteristics of disc turbine agitator

作　　者：刘会鹏 杨闻 邰燕翔 洪厚胜[2,3] 郭会明 LIU Huipeng;YANG Wen;TAI Yanxiang;HONG Housheng;GUO Huiming(School of Chemical and Molecular Engineering,Nanjing Tech University,Nanjing 211816,Jiangsu Province,China;School of Biological and Pharmaceutical Engineering,Nanjing Tech University,Nanjing 211816,Jiangsu Province,China;Nanjing Highke Bioengineering Equipment Co.,Ltd.,Nanjing 210009,Jiangsu Province,China)

机构地区：[1]南京工业大学化学与分子工程学院,江苏南京211816 [2]南京工业大学生物与制药工程学院,江苏南京211816 [3]南京汇科生物工程设备有限公司,江苏南京210009

出　　处：《化学工程》2025年第4期43-47,71,共6页Chemical Engineering(China)

基　　金：国家高技术研究发展计划项目(2012AA021201)。

摘　　要：利用数值模拟与实验结合的方法对4种圆盘涡轮搅拌器在300 L气液机械搅拌反应器内气液混合效果进行研究,具体分析各桨叶的通气功率消耗、气相含率以及体积氧传质系数情况。研究结果表明:不同圆盘涡轮搅拌器在通气时搅拌功率差异较大,各搅拌桨叶单位功率气含率由大到小为:不对称抛物线>六箭叶>六弯叶>六直叶。在4种常用的氧传质模型中,渗透模型和滑移速度模型对各桨叶的体积氧传质系数的预测较为准确,单位功率体积氧传质系数由大到小为:不对称抛物线>六箭叶>六弯叶>六直叶。数值模拟结果与实验结果具有较好的一致性,能为更高效性能搅拌桨叶的优化与开发提供一定的参考价值。The gas-liquid mixing effect of four disc turbine stirrers in 300 L gas-liquid mechanically stirred reactor was investigated using a combinations of numerical simulations and experimental methods,and the aeration power consumption,gas-phase content and volumetric oxygen mass-transfer coefficient of the paddles were specifically analysed.The results show that the stirring power of different disc turbine stirrers varies greatly during aeration,and the gas content per unit power of each stirring paddle is in descending order:asymmetric parabolic blade>six-arrow blade>six-curved blade>six-straight blade.Among the four commonly used oxygen transfer models,the permeation model and slip velocity model predict the volumetric oxygen transfer coefficients of each paddle more accurately,and the volumetric oxygen transfer coefficients per unit of power are from large to small:asymmetric parabola blade>six-arrow blade>six-curved blade>six-straight blade.The numerical simulation results are in good agreement with the experimental results,which can provide some reference value for the optimisation and development of more efficient performance stirring paddles.

关 键 词：圆盘涡轮搅拌器 数值模拟 气液机械搅拌反应器 气液两相流 氧传质模型 传质系数 

分 类 号：TQ27[化学工程—有机化工]