Mixing characteristics and enhancement of excitation in mini confined impinging jets reactor

doi:10.11949/j.issn.0438-1157.20141811

CIESC Journal ›› 2015, Vol. 66 ›› Issue (7): 2395-2401.DOI: 10.11949/j.issn.0438-1157.20141811

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Mixing characteristics and enhancement of excitation in mini confined impinging jets reactor

DU Kejiang, LI Weifeng, SHAN Zhihao, LIU Haifeng, WANG Fuchen

Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China

Received:2014-12-08 Revised:2015-03-16 Online:2015-07-05 Published:2015-07-05
Supported by:
supported by the National Natural Science Foundation of China (91434130).

小型受限撞击流反应器内混合特征及激励强化

杜柯江, 李伟锋, 单志昊, 刘海峰, 王辅臣

华东理工大学煤气化及能源化工教育部重点实验室, 上海煤气化工程技术研究中心, 上海 200237

通讯作者: 李伟锋
基金资助:
国家自然科学基金项目(91434130)。

Abstract

Abstract:

An experimental study is undertaken on liquid mixing process in mini confined impinging jets reactor (CIJR) with excitation by using planar laser induced fluorescence (PLIF) technique quantitatively, and the jet inlet Reynolds number is in the range of 75 to 150. The results show that the mixing effect of two fluids significantly increases during the segregated steady flow translates to the dynamic chaotic flow regime in CIJR. The excitation affects the mixing process in CIJR and the mixing performance is enhanced in the segregated flow regime. However, the excitation has no significant influence on the mixing for the flow in the oscillation regime.

Key words: mixing, mass transfer, flow, excitation, mini CIJR, planar laser induced fluorescence

摘要：

利用平面激光诱导荧光技术(planar laser induced fluorescence,PLIF)研究了小型受限撞击流反应器(confined impinging jets reactor,CIJR)内混合特征及激励强化,射流入口Reynolds数范围为75~150。研究结果表明,在受限撞击流反应器内,由分离流模式向自持振荡模式转变过程中,两股流体间的混合效果逐渐提升;当流动为分离流模式时,激励能有效地强化两股流体间的混合,而当流动转变为自持振荡模式时,激励对流体混合的影响较小。

关键词: 混合, 传质, 流动, 激励, 小型撞击流反应器, 平面激光诱导荧光技术

CLC Number:

TQ021.1

DU Kejiang, LI Weifeng, SHAN Zhihao, LIU Haifeng, WANG Fuchen. Mixing characteristics and enhancement of excitation in mini confined impinging jets reactor[J]. CIESC Journal, 2015, 66(7): 2395-2401.

杜柯江, 李伟锋, 单志昊, 刘海峰, 王辅臣. 小型受限撞击流反应器内混合特征及激励强化[J]. 化工学报, 2015, 66(7): 2395-2401.

References 19

[1]	Tamir A. Impinging-Stream Reactors: Fundamentals and Applications [M]. Amsterdam: Elsevier, 1994.
[2]	Santos R J, Teixeira A M, Lopes J C R. Study of mixing and chemical reaction in RIM [J]. Chemical Engineering Science, 2005, 60(8/9): 2381-2398.
[3]	Devahastin S, Mujumdar A S. A numerical study of flow and mixing characteristics of laminar confined impinging streams [J]. Chemical Engineering Journal, 2002, 85(2/3): 215-223.
[4]	Mahajan A J, Kirwan D J. Micromixng effects in a two-impinging-jets precipitator [J]. AIChE Journal, 1996, 42(7): 1801-1814.
[5]	Tucker C L, Suh N P. Mixing for reaction injection molding (Ⅰ): Impingement mixing of liquids [J]. Polymer Engineering & Science, 1980, 20(13): 875-886.
[6]	Santos R J, Erkoc E, Dias M M, Teixeira A M, Lopes J C B. Hydrodynamics of the mixing chamber in RIM: PIV flow-field characterization [J]. AIChE Journal, 2008, 54(5): 1153-1163.
[7]	Santos R J, Erkoc E, Dias M M, Lopes J C B. Dynamic behavior of the flow field in a RIM machine mixing chamber [J]. AIChE Journal, 2009, 55(6): 1338-1351.
[8]	Erkoc E, Santos R J, Nunes M I, Dias M M, Lopes J C B. Mixing dynamics control in RIM machines [J]. Chemical Engineering Science, 2007, 62(18/19/20): 5276-5281.
[9]	Qiu S X, Xu P, Qiao X W, Mujumdar S Arun. Flow and mixing characteristics of pulsed confined opposed jets in turbulent flow regime [J]. Heat & Mass Transfer, 2013, 49(2): 277-284.
[10]	Krupa K, Nunes M I, Santos R J, Bourne J R. Characterization of micromixing in T-jet mixers [J]. Chemical Engineering Science, 2014, 111: 48-55.
[11]	Li W F, Du K J, Yu G S, Liu H F, Wang F C. Experimental study of flow regimes in three-dimensional confined impinging jets reactor [J]. AIChE Journal, 2014, 60(8): 3033-3045.
[12]	Li W F, Huang G F, Tu G Y, Liu H F, Wang F C. Experimental study of oscillation of axisymmetric turbulent opposed jets with modulated airflow [J]. AIChE Journal, 2013, 59(12): 4828-4838.
[13]	Li W F, Huang G F, Tu G Y, Liu H F, Wang F C. Experimental study of planar opposed jets with acoustic excitation [J]. Physics of Fluids, 2013, 25(1): 014108-014123.
[14]	Ito Y, Komori S. A vibration technique for promoting liquid mixing and reaction in a microchannel [J]. AIChE Journal, 2006, 52: 3011-3017.
[15]	Ian G, Nadine A. Enhancement of microfluidic mixing using time pulsing [J]. Lab on a Chip, 2003, 3: 114-120.
[16]	Icardi M, Gavi E, Marchisio D L, Barresi A A, Olsen M G, Fox R O, Lakehal D. Investigation of the flow field in a three-dimensional confined impinging jets reactor by means of microPIV and DNS [J]. Chemical Engineering Journal, 2011, 166(1): 294-305.
[17]	Danckwerts P V. The definition and measurement of some characteristics of mixtures [J]. Applied Scientific Research, Section A, 1952, 3: 279-296.
[18]	Marko H, Michael S, Norbert R. Experimental investigation of liquid-liquid mixing in T-shaped micro-mixers using μ-LIF and μ-PIV [J]. Chemical Engineering Science, 2006, 61(9): 2968-2976.
[19]	Li W F, Qian W W, Yu G S, Liu H F, Wang F C. Experimental study of oscillation behaviors in confined impinging jets reactor under excitation [J]. AIChE Journal, 2015, 61(1): 333-341.

Mixing characteristics and enhancement of excitation in mini confined impinging jets reactor

小型受限撞击流反应器内混合特征及激励强化

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