三层搅拌式反应釜内部气液流动特性研究

系统仿真学报 ›› 2016, Vol. 28 ›› Issue (2): 396-403.

三层搅拌式反应釜内部气液流动特性研究

胡效东¹, 张德新¹, 姜蓉², 武增辉³, 田强⁴

1.山东科技大学机械电子工程学院,山东青岛 266590;
2.山东科技大学工程训练中心,山东青岛 266590;
3.威海海化工机械有限公司,山东威海 264203;
4.中国石油化工股份有限公司济南分公司,山东济南 250101

收稿日期:2014-09-17 修回日期:2014-10-26 出版日期:2016-02-08 发布日期:2020-08-17
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;张德新(1989-),男,山东,硕士,研究方向为化工过程机械;姜蓉(1976-),女,山东,研究方向为机械设计理论。
基金资助:
中国博士后科学基金(2012M511015)

Characteristics Study of Internal Gas-Liquid Two Phase Flow Field of Three Layers of Air Stirred Tank Reactor

Hu Xiaodong¹, Zhang Dexin¹, Jiang Rong², Wu Zenghui³, Tian Qiang⁴

1. College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China;
2. Engineering Training Center of Shandong University of Science and Technology, Qingdao 266590, China;
3. Weihai Chemical Machinery CO., LTD, Weihai 264203, China;
4. Ji'nan Branch, China Petroleum Chemical Co., Jinan 250101, China;

Received:2014-09-17 Revised:2014-10-26 Online:2016-02-08 Published:2020-08-17

摘要/Abstract

摘要： 选用Euler-Euler多相流模型和群体平衡模型,采用多重参考系(multi-reference frame, MRF)方法,分析2KSX(四宽叶旋桨搅拌器)+抛物线圆盘涡轮(parabolic disc turbine, PDT)三层搅拌器反应器内部流场和气液两相分布特性,计算反应器内整体和局部气含率的分布。得出结论：搅拌反应器内上层和中层搅拌桨产生轴向流动,下层搅拌桨产生径向流动,并且和反应器内壁的共同作用下形成一个循环变化的流动;利用宽叶旋浆搅拌器的轴向驱动,及抛物线圆盘涡轮搅拌器的径向驱动作用,提高搅拌反应器的气含率,使其局部气含率的分布较为均匀;搅拌反应器内部的气含率随着搅拌时间的延长而增加,当搅拌26 s之后,内部的气含率基本不再变化,延长搅拌时间并不能增加内部的气含率。

关键词: 搅拌式反应器, MRF, 欧拉模型, CFD

Abstract: The fluid dynamics and the gas-liquid distribution character in a three-layer stirred tank reactor with 2KSX (four wide blade propeller type stirrer) and PDT (parabolic disc turbine) were analyzed with the MRE (multi-reference frame) method based on Euler-Euler and population balance models. The total and local gas-hold were calculated. The conclusions show that: axial flow was produced by double stir upper KSX with radial flow produced by the third layer of PDT, gas-hold was improved with double-upper-layer stirrers axial driven and the lowest stirrer axial driven, gas-hold increased with the stirred time going on, which would not be extended with stirring with the time more than 26 s.

Key words: Stirred tank reactor, MRF, Euler-Euler model, CFD

中图分类号:

TP391.9

胡效东, 张德新, 姜蓉, 武增辉, 田强. 三层搅拌式反应釜内部气液流动特性研究[J]. 系统仿真学报, 2016, 28(2): 396-403.

Hu Xiaodong, Zhang Dexin, Jiang Rong, Wu Zenghui, Tian Qiang. Characteristics Study of Internal Gas-Liquid Two Phase Flow Field of Three Layers of Air Stirred Tank Reactor[J]. Journal of System Simulation, 2016, 28(2): 396-403.

参考文献 15

[1]	邵潜, 龙军. 化学反应器分析 [M]. 上海: 华东理工大学出版社, 2005.
[2]	王文坦, 张梦雪, 金涌, 等. 激光诱导荧光技术在液体混合可视化研究中的应用[J]. 化工学报, 2013, 64(3): 771-778
[3]	赵静, 蔡子琦, 高正明. 组合桨搅拌槽内混合过程的实验研究及大涡模拟[J]. 北京化工大学学报, 2011. 38(6): 22-28.
[4]	K Samaras, M Kostoglou, T D Karapantsios, et al.Effect of Adding Glycerol and Tween 80 on Gas Holdup and Bubble Size Distribution in an Aerated Stirred Tank[J]. Colloids and Surface A: Physicochemical and Engineering Aspects (S0927-7757), 2014, 441(3): 815-824.
[5]	胡效东, 田强. 基于滑移网格的反应釜内部流体动力学特性研究[J]. 压力容器, 2013, 30(7): 30-55.
[6]	Altway A, Setyawan H, Margonoet G, et al. Effect of particle size on simulation of three-dimensional solid dispersion in stirred tank[J]. Chem Eng Res Des (S0263-8762), 2001, 79(8): 1011-1016.
[7]	沈春银, 陈剑佩, 张家庭, 等. 气液两相机械搅拌釜中水翼-涡轮组合浆的功率消耗[J]. 华东理工大学学报, 2012, 28(6): 578-583.
[8]	侯权, 潘红良, 冯巧波. 基于FLUENT的搅拌反应罐流场的优化研究[J]. 机械设计与研究, 2005, 21(3): 78-82.
[9]	潘传九, 葛文娜, 陆晓峰. 基于CFD的搅拌釜流场数值模拟及预测[J]. 化工进展, 2012, 31: 87-91.
[10]	毕学工, 岳锐. 基于FLUENT的搅拌流场模拟研究[J]. 武汉科技大学学报, 2012, 35(5): 321-324.
[11]	丁程兵. 多层搅拌反应釜内气含率的实验研究与数值模拟 [D]. 南京: 南京理工大学, 2013.
[12]	徐琰, 董海峰, 田肖, 等. 鼓泡塔中液体-空气两相流的CFD-PBM耦合模拟[J]. 化工学报, 2011, 10(62): 2699-2706.
[13]	Zhang Qinghua, Mao Zaisha, Yang Chao, et al.Numerical simulation of barium sulfate precipitation process in a continuous stirred tank with multiple-time-scale turbulent mixer model[J]. Ind Eng Chen Res (S0888-5885), 2009, 48(1): 424-429.
[14]	Gentric C, Mignon D, Bousquet J, et al.Comparison of Mixing in Two Industrial Gas-Liquid Reactors Using CFD Simulations[J]. Chem. Eng. Sci.(S0009-2509), 2005, 60(8/9): 2253-2272.
[15]	Kelly W, Gigas B.Using CFD to Predict the Behavior of Power law Fluids Near Axial-flow Impellers Operating in the Transitional flow Regime[J]. Chem. Eng. Sci.(S0009-2509), 2003, 58(10): 2141-2152.