Hydrodynamics in gas-liquid-solids circulating fluidized beds with low solids holdups

doi:10.3969/j.issn.0438-1157.2013.02.014

CIESC Journal ›› 2013, Vol. 64 ›› Issue (2): 504-516.DOI: 10.3969/j.issn.0438-1157.2013.02.014

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Hydrodynamics in gas-liquid-solids circulating fluidized beds with low solids holdups

LIU Jianhua¹, LIU Mingyan^1,2, HU Zongding¹

1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2. State Key Laboratory of Chemical Engineering(Tianjin University), Tianjin 300072, China

Received:2012-06-19 Revised:2012-08-15 Online:2013-02-05 Published:2013-02-05
Supported by:
supported by the National Natural Science Foundation of China(20576091).

低固含率气-液-固循环流化床流动特性

刘建华¹, 刘明言^1,2, 胡宗定¹

1. 天津大学化工学院,天津 300072;
2. 化学工程联合国家重点实验室(天津大学),天津 300072

通讯作者: 刘明言
作者简介:刘建华(1981—),男,硕士。
基金资助:
国家自然科学基金项目(20576091)。

Abstract

Abstract: Hydrodynamics in gas-liquid-solids circulating fluidized beds with low solids holdups of resin particles was experimentally investigated with a high-speed image measurement and treatment technique of complementary metal oxide semiconductor.Influences of superficial liquid velocity, particle diameter and density, liquid surface tension and viscosity on the phase holdups, average gas bubble diameter, circulating rate of solids particles both in the riser and in the downer and bubble motions were investigated. Experimental data with reasonable physical explanations of the hydrodynamics of gas-liquid-solids circulating fluidized beds were obtained.

Key words: macroporous resin particles, gas-liquid-solids, circulating fluidized bed, hydrodynamics, low solids holdup

摘要： 应用基于互补金属氧化物半导体(complementary metal oxide semiconductor,CMOS)传感器的高速图像采集和处理技术,实验研究了低固含率条件下,低密度大孔吸附树脂固体颗粒气-液-固三相循环流化床的流体力学行为,分析了操作条件、液相物性、颗粒性质等对床内的固体颗粒循环速率、相含率、气泡运动等特性的影响,得到了具有合理物理解释的实验数据和结果。

关键词: 大孔树脂颗粒, 气-液-固, 循环流化床, 动力学, 低固含率

CLC Number:

TQ021.1

LIU Jianhua, LIU Mingyan, HU Zongding. Hydrodynamics in gas-liquid-solids circulating fluidized beds with low solids holdups[J]. CIESC Journal, 2013, 64(2): 504-516.

刘建华, 刘明言, 胡宗定. 低固含率气-液-固循环流化床流动特性[J]. 化工学报, 2013, 64(2): 504-516.

References 16

[1]	Liang Wugeng(梁五更),Wu Qunwei(吴群伟),Yu Zhiqing(俞芷青),Jin Yong(金涌),Wang Zhanwen(汪展文).Investigation on gas-liquid-solid circulating fluidized bed[J].Journal of Chemical Industry and Engineering(China)(化工学报),1995, 46(1):117-122
[2]	Liang Wugeng, Yu Zhiqing, Jin Yong, Wang Zhanwen, Wu Qunwei.The phase holdups in a gas-liquid-solid circulating fluidized bed[J].Chemical Engineering Journal and the Biochemical Engineering Journal, 1995, 58(3):259-264
[3]	Wang Tiefeng(王铁峰), Wang Jinfu(王金福), Yang Weiguo(杨卫国),Jin Yong(金涌).Experimental study on the bubble rise velocity in three-phase circulating fluidized beds[J].Journal of Chemical Engineering of Chinese Universities(高校化学工程学报), 2000, 14(4):334-339
[4]	Zhu J X, Zheng Y, Karamanev D G, Bassi A S.(Gas)-liquid-solid circulating fluidized beds and their potential applications to bioreactor engineering[J].Canadian Journal of Chemical Engineering, 2000,78(1):82-94
[5]	Jin Yong(金涌), Zhu Jingxu(祝京旭), Wang Zhanwen(汪展文).The Principles of Fluidization Engineering(流态化工程原理)[M].Beijing:Tsinghua University Press, 2001
[6]	Razzak S A, Barghi S, Zhu J X.Electrical resistance tomography for flow characterization of a gas-liquid-solid three-phase circulating fluidized bed[J].Chemical Engineering Science, 2007, 62(24):7253-7263
[7]	Razzak S A, Barghi S, Zhu J X, Mi Y.Phase holdup measurement in a gas-liquid-solid circulating fluidized bed(GLSCFB)riser using electrical resistance tomography and optical fibre probe[J].Chemical Engineering Journal, 2009, 147(2/3):210-218
[8]	Razzak S A, Zhu J X, Barghi S.Radial distributions of phase holdups and phase propagation velocities in a three-phase gas-liquid-solid fluidized bed(GLSCFB)riser[J].Industrial and Engineering Chemistry Research, 2009, 48(1):281-289
[9]	Razzak S A, Barghi S, Zhu J X.Axial hydrodynamic studies in a gas-liquid-solid circulating fluidized bed riser[J].Powder Technology, 2010, 199(1):77-86
[10]	Razzak S A, Barghi S, Zhu J X.Phase distributions in a gas-liquid-solid circulating fluidized bed riser[J].Canadian Journal of Chemical Engineering, 2010, 88(4):579-585
[11]	Razzak S A, Zhu J X, Barghi S.Effects of particle shape, density, and size on a distribution of phase holdups in a gas-liquid-solid circulating fluidized bed riser[J].Industrial and Engineering Chemistry Research, 2010, 49(15):6998-7007
[12]	Liu Mingyan(刘明言),Yang Yang(杨扬),Xue Juanping(薛娟萍),Hu Zongding(胡宗定).Measuring techniques for gas-liquid-solid three-phase fluidized bed reactors[J].The Chinese Journal of Process Engineering(过程工程学报),2005,5(2):217-222
[13]	Liu Jianhua, Liu Mingyan, Hu Zongding.Clustering behavior in gas-liquid-solid circulating fluidized beds with low solid holdups of resin particles[J].Canadian Journal of Chemical Engineering, 2010, 88(4):586-600
[14]	Tan Lin, Liu Mingyan, Hu Zongding.Hydrodynamics and adsorption mass transfer in a novel gas-liquid-solid circulating fluidized bed adsorber[J].Industrial and Engineering Chemistry Research, 2011, 50(6):3598-3612
[15]	Fan L S.Gas-liquid-solid Fluidization Engineering[M].New York:Butterworths Publishers, 1989
[16]	Puneet D,Arturo M.Effect of surface-active agents on the phase holdups of three-phase fluidized beds[J].Chemical Engineering and Processing,2006, 45(9):764-772

Hydrodynamics in gas-liquid-solids circulating fluidized beds with low solids holdups

低固含率气-液-固循环流化床流动特性

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