穿流-刚柔组合桨强化固液两相的悬浮行为

doi:10.11949/j.issn.0438-1157.20170632

化工学报 ›› 2017, Vol. 68 ›› Issue (12): 4556-4564.DOI: 10.11949/j.issn.0438-1157.20170632

穿流-刚柔组合桨强化固液两相的悬浮行为

谷德银¹, 刘作华¹, 邱发成¹, 许传林¹, 谢昭明¹, 李军¹, 陶长元¹, 王运东²

1 重庆大学化学化工学院, 重庆 400044;
2 清华大学化学工程系, 北京 100084

收稿日期:2017-05-16 修回日期:2017-06-17 出版日期:2017-12-05 发布日期:2017-12-05
通讯作者: 刘作华
基金资助:
国家自然科学基金项目（21576033，21636004）；中央高校基本科研业务费专项资金（106112017CDJQJ228808）；重庆市社会事业与民生保障科技创新专项（cstc2015shmszx100024）。

Solid-liquid suspension behavior intensified by punched rigid-flexible impeller

GU Deyin¹, LIU Zuohua¹, QIU Facheng¹, XU Chuanlin¹, XIE Zhaoming¹, LI Jun¹, TAO Changyuan¹, WANG Yundong²

1 School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China;
2 Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received:2017-05-16 Revised:2017-06-17 Online:2017-12-05 Published:2017-12-05
Supported by:
supported by the National Natural Science Foundation of China (21576033, 21636004), the Fundamental Research Funds for the Central Universities (106112017CDJQJ228808) and the Chongqing Special Social Undertakings and People's Livelihood Security Science and Technology Innovation (cstc2015shmszx100024).

摘要/Abstract

摘要：

采用双向流固耦合计算方法对搅拌槽内刚性桨（RDT-PBDT）、刚性组合桨（R-RDT-PBDT）、刚柔组合桨（RF-RDT-PBDT）、穿流-刚性组合桨（PR-RDT-PBDT）以及穿流-刚柔组合桨（PRF-RDT-PBDT）体系中的固液两相悬浮特性和桨叶总变形量、等效应力进行了研究。结果表明，在相同功耗下，PRF-RDT-PBDT的最大变形量分别是RDT-PBDT、R-RDT-PBDT、RF-RDT-PBDT、PR-RDT-PBDT的1.984×10⁶倍、1.247×10³倍、1.169倍、1.041×10³倍。PRF-RDT-PBDT的应力大于RDT-PBDT、R-RDT-PBDT、RF-RDT-PBDT的，比PR-RDT-PBDT的应力分布更均匀。PRF-RDT-PBDT体系的固体颗粒最大U_z/U_tip值和最大ε/D²N³值分别比RDT-PBDT、R-RDT-PBDT、RF-RDT-PBDT和PR-RDT-PBDT体系提高了53.08%和80.84%，38.03%和28.42%，22.14%和20.16%，10.85%和5.725%。PRF-RDT-PBDT能够增大与流体之间的相互耦合作用，增大固体颗粒的轴向速度，提高体系的湍动能耗散率，减小搅拌槽底部固体颗粒的堆积程度，提高固体颗粒的悬浮程度。

关键词: 流固耦合, 搅拌, PRF-RDT-PBDT, 固液两相, 悬浮

Abstract:

The total deformation and equivalent stress of impeller, and hydrodynamics of solid-liquid suspension process in a stirred tank with RDT-PBDT, R-RDT-PBDT, RF-RDT-PBDT, PR-RDT-PBDT and PRF-RDT-PBDT were investigated using bidirectional fluid-structure interaction (FSI) method. Results showed that, at the same power consumption, the total deformation of PRF-RDT-PBDT was 1.984×10⁶, 1.247×10³, 1.169, 1.041×10³ times of RDT-PBDT, R-RDT-PBDT, RF-RDT-PBDT and PR-RDT-PBDT, respectively. The equivalent stress of PRF-RDT-PBDT was larger than that of RDT-PBDT, R-RDT-PBDT and RF-RDT-PBDT, and was more homogeneous than that of PR-RDT-PBDT. The maximum U_z/U_tip value of solid particle and maximum ε/D²N³ value in PRF-RDT-PBDT system were 53.08% and 80.84%,38.03% and 28.42%,22.14% and 20.16%,10.85% and 5.725%, which are higher compared with RDT-PBDT, R-RDT-PBDT, RF-RDT-PBDT, PR-RDT-PBDT, respectively. Therefore, PRF-RDT-PBDT can enhance mutual coupling effect with fluid, increase axial velocity of solid particles and turbulent energy dissipation rate, reduce the accumulation of solid particles at the bottom of stirring tank, and improve the solid-liquid mixing performance.

Key words: fluid-structure interaction, stirring, PRF-RDT-PBDT, solid-liquid two-phase, suspension

中图分类号:

TQ027.2

谷德银, 刘作华, 邱发成, 许传林, 谢昭明, 李军, 陶长元, 王运东. 穿流-刚柔组合桨强化固液两相的悬浮行为[J]. 化工学报, 2017, 68(12): 4556-4564.

GU Deyin, LIU Zuohua, QIU Facheng, XU Chuanlin, XIE Zhaoming, LI Jun, TAO Changyuan, WANG Yundong. Solid-liquid suspension behavior intensified by punched rigid-flexible impeller[J]. CIESC Journal, 2017, 68(12): 4556-4564.

参考文献 27

[1]	BALDI G, CONTI R, ALARIA E, et al. Complete suspension of particles in mechanically agitated vessels[J]. Chem. Eng. Sci., 1978, 33(1):21-25.
[2]	KUZMANIC N, KESSLER E M. Continuous sampling of floating solids suspension from a mixing tank[J]. Chem. Eng. Res. Des., 1997, 36(11):5015-5022.
[3]	MICHELETTI M, NIKIFORAKI L, LEE K C, et al. Particle concentration and mixing characteristics of moderate-to-dense solid-liquid suspensions[J]. Ind. Eng. Chem. Res., 2003, 42(24):6236-6249.
[4]	KUMARESAN T, JOSHI J B. Effect of impeller design on the flow pattern and mixing in stirred tanks[J]. Chem. Eng. Sci., 2006, 115(3):173-193.
[5]	THRING R W, EDWARDS M F. An experimental investigation into the complete suspension of floating solids in an agitated tank[J]. Ind. Eng. Chem. Res., 1990, 29(4):678-682.
[6]	TAGAWA A, DOHI N, KAWASE Y. Dispersion of floating solid particles in aerated stirred tank reactors:minimum impeller speeds for off-surface and ultimately homogeneous solid suspension and solids concentration profiles[J]. Ind. Eng. Chem. Res., 2006, 45(2):818-829.
[7]	KLENOV O P, NOSKOV A S. Solid dispersion in the slurry reactor with multiple impellers[J]. Chem. Eng. Sci., 2011, 176(1):75-82.
[8]	周坤. 偏心搅拌内固液两相流动特性的研究[D]. 北京:北京化工大学, 2015. ZHOU K. Study for the flow characteristic of solid-liquid system in eccentrically stirred tank[D]. Beijing:Beijing University of Chemical Technology, 2015.
[9]	杨瑞, 周肇义, 蒋述曾. 新型高效射流搅拌发酵罐的开发和应用[J]. 食品与发酵工业,1999, 25(5):41-46. YANG R, ZHOU Z Y, JIANG S Z. The Development and application of new type high-efficient jet-stirring fermenter[J]. Food and Fermentation Industries, 1999, 25(5):41-46.
[10]	WIGGINS S. Coherent structures and chaotic advection in three dimensions coherent structures and chaotic advection in three dimensions[J]. Journal of Fluid Mechanics, 2010, 654(10):1-4.
[11]	SHEKHAR C, NISHINO K, YAMANE Y, et al. Stereo-PIV measurement of turbulence characteristics in a flow mixer[J]. Journal of Visualization, 2012, 15(4):293-308.
[12]	刘作华, 孙瑞祥, 陶长元, 等. 提高金属锰电解液浸取率的组合式搅拌桨:201110088762.8[P].2012-10-10. LIU Z H, SUN R X, TAO C Y. A combined type stirring paddle to improve the leaching rate of manganese metal electrolyte:201110088762.8[P].2012-10-10.
[13]	CAMPBELL R L, PATERSON E G. Fluid-structure interaction analysis of flexible turbomachinery[J]. Journal of Fluids and Structures, 2011, 27(8):1376-1391.
[14]	刘静, 欧阳锋, 王能勤. 新型穿流式搅拌器在固-液系统中的搅拌性能研究[J]. 四川联合大学学报(工程科学版), 1999, 3(2):48-53. LIU J, OUYANG F, WANG N Q. Agitation characteristics of a new type punched agitator used in solid-liquid system[J]. Journal of Sichuan Union University(Engineering Science Edition), 1999, 3(2):48-53.
[15]	欧阳锋. 新型穿流式搅拌桨在湿法磷酸反应器中的应用[J]. 西南交通大学学报, 2000, 35(2):145-147. OUYANG F. Application of a new type of punched agitator to phosphoric acid reaction[J]. Journal of Southwest Jiaotong University, 2000, 35(2):145-147.
[16]	朱俊, 周政霖, 刘作华, 等. 刚柔组合搅拌桨强化流体混合的流固耦合行为[J]. 化工学报, 2015, 66(10):3849-3856. ZHU J, ZHOU Z L, LIU Z H, et al. Fluid-structure coupling interaction in liquid flow movement intensified by flexible-rigid impeller[J]. CIESC Journal, 2015, 66(10):3849-3856.
[17]	栾德玉, 张盛峰, 郑深晓, 等. 基于流固耦合的错位桨搅拌假塑性流体动力学特性[J]. 化工学报, 2017, 68(6):2328-2335. LUAN D Y, ZHANG S F, ZHENG S X, et al. Dynamic characteristics of impeller of perturbed six-bent-bladed turbine in pseudoplastic fluid based on fluid-structure interaction[J]. CIESC Journal, 2017, 68(6):2328-2335.
[18]	TAMBURINI A, CIPOLLINA A, MICALE G, et al. CFD simulation of dense solid-liquid suspensions in baffled stirred tank:predictions of suspension curves[J]. Chem. Eng. J., 2011, 178:324-341.
[19]	TAMBURINI A, CIPOLLINA A, MICALE G, et al. CFD simulation of dense solid-liquid suspensions in baffled stirred tank:predictions of the minimum impeller speed for complete suspension[J]. Chem. Eng. J., 2012, 193:234-255.
[20]	SHAO T, HU Y Y, WANG W T, et al. Simulation of solid suspension in a stirred tank using CFD-DEM coupled approach[J]. Chin. J. Chem. Eng., 2013, 21(10):1069-1081.
[21]	BASAVARAJAPPA M, DRAPER T, TOTH P, et al. Numerical and experimental investigation of single phase flow characteristics in stirred tanks using Rushton turbine and flotation impeller[J]. Minerals Engineering, 2015, 83:156-167.
[22]	WADNERKAR D, UTIKAR R P, TADE M O, et al. CFD simulation of solid-liquid stirred tanks[J]. Advanced Power Technology, 2012, 23(4):445-453.
[23]	刘作华, 杨鲜艳, 谢昭明, 等. 柔性桨与自浮颗粒协同强化高黏度流体混沌混合[J]. 化工学报, 2013, 64(8):2794-2800. LIU Z H, YANG X Y, XIE Z M, et al. Chaotic mixing performance of high-viscosity fluid synergistically intensified by flexible impeller and floating particles[J]. CIESC Journal, 2013, 64(8):2794-2800.
[24]	刘作华, 孙瑞祥, 王运东, 等. 刚-柔组合搅拌桨强化流体混沌混合[J] 化工学报, 2014, 65(9):3340-3349. LIU Z H, SUN R X, WANG Y D, et al. Chaotic mixing intensified by rigid-flexible coupling impeller[J]. CIESC Journal, 2014, 65(9):3340-3349.
[25]	BALDI G, CONTI R, ALARIA E. Complete suspension of particles in mechanically agitated vessels[J]. Chem. Eng. Sci., 1978, 33(1):21-25.
[26]	DOHI N, TAKAHASHI T, MINEKAWA K, et al. Power consumption and solid suspension performance of large-scale impellers in gas-liquid-solid three-phase stirred tank reactors[J]. Chem. Eng. J., 2004, 97:103-114.
[27]	TAKAHASHI K, SASAKI S. Complete drawdown and dispersion of floating solids in agitated vessel equipped with ordinary impellers[J]. J. Chem. Eng. Jpn., 1999, 32(1):40-44.

穿流-刚柔组合桨强化固液两相的悬浮行为

Solid-liquid suspension behavior intensified by punched rigid-flexible impeller

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