气泡驱动液固流化床内二元颗粒的流化行为

刘英杰; 祝京旭

doi:10.11949/j.issn.0438-1157.20180812

您当前的位置：

首页 >

文章列表页 >

气泡驱动液固流化床内二元颗粒的流化行为

流体力学与传递现象 | 更新时间：2020-06-24

- 气泡驱动液固流化床内二元颗粒的流化行为
- Flow behaviors in bubble-driven liquid-solid fluidized-bed adopting binary particles
- 化工学报 2019年70卷第1期页码：91-98
- 作者机构：
  
  1.常州大学江苏省绿色催化材料与技术重点实验室，江苏常州 213164
  2.西安大略大学化学与生物化工学院，加拿大安大略省伦敦 N6A 5B9
- 作者简介：
  
  刘英杰（1982—），女，博士，讲师，liuyj@cczu.edu.cn
  祝京旭（1960—），男，博士，教授，jzhu@uwo.ca
- 基金信息：
  
  重质油国家重点实验室开放课题项目(SKLOP20163001);江苏省绿色催化材料与技术实验室开放课题项目(BM2012110)
- DOI：10.11949/j.issn.0438-1157.20180812
  中图分类号： TQ 021.1
- 收稿：2018-07-17，
  
  修回：2018-11-07，
  
  纸质出版：2019-01-05
- 稿件说明：
移动端阅览
刘英杰, 祝京旭. 气泡驱动液固流化床内二元颗粒的流化行为[J]. 化工学报, 2019, 70(1): 91-98

LIUYingjie, ZHU Jesse. Flow behaviors in bubble-driven liquid-solid fluidized-bed adopting binary particles[J]. CIESC Journal, 2019, 70(1): 91-98
刘英杰, 祝京旭. 气泡驱动液固流化床内二元颗粒的流化行为[J]. 化工学报, 2019, 70(1): 91-98 DOI： 10.11949/j.issn.0438-1157.20180812.

LIUYingjie, ZHU Jesse. Flow behaviors in bubble-driven liquid-solid fluidized-bed adopting binary particles[J]. CIESC Journal, 2019, 70(1): 91-98 DOI： 10.11949/j.issn.0438-1157.20180812.

摘要

采用密度稍重于和稍轻于流体的两种颗粒，研究了气泡驱动液固流化床内二元颗粒的流化行为。通过测量压差和拍摄视频的方法确定了初始流化气速

、固含率和气含率。重颗粒的

通过流化床底部的压差变化确定，轻颗粒的

则通过观察得到。研究表明

在气泡驱动的液固流化床内，重颗粒和轻颗粒的初始流化气速都随藏量的增加而增加，但重颗粒增加幅度更大。完全流化后，重颗粒固含率在轴向上分布不均匀，而轻颗粒则分布较为均匀。在二元颗粒体系内，上部轻颗粒的流化受到下部重颗粒的影响而底部重颗粒的流化不受轻颗粒影响，导致重颗粒

和固含率分布主要受自身藏量影响，而轻颗粒

随二元颗粒的总藏量变化。

Abstract

Adopting two kinds of particles whose density is a little higher and lighter than fluid

the fluid dynamics in a bubble-driven liquid-solid fluidized-bed was studied. Air was introduced into the bottom as driving force and the liquid was continuous phase at the stationary phase. Pressure drops were measured and the videos were taken between different heights to estimate the initial fluidization gas velocity

solid holdup and gas holdup. The initial fluidization gas velocity of heavy particles could be obtained by the variation of pressure drops at the bottom of the bed near gas distributor. While that of the light particles was determined by observation. The results showed that

of both the heavy and the light particles increase with solids loadings. The increasing tendency of the heavy particles at higher loadings becomes steep while that of the light particles is gentle. After fully fluidization

the axial distribution of solids holdup of the heavy particles is non-uniform comparing to the uniform distribution of the light particle solids holdup. When using binary particles

the fluidization of the upper light particles is influenced by the lower heavy particles. However

the heavy particles are not affected by the light particles. Thus

and the axial solids holdup of the heavy particles changes with heavy particle loadings. The light particle

varies with the total amount of binary particles.

关键词

Keywords

references

Costa E , De Lucas A , Garcia P . Fluid dynamics of gas-liquid-solid fluidized beds [J]. Ind. Eng. Chem. Proc. Des. Dev ., 1986 , 25 ( 4 ): 849 - 854 .

Song G H , Bavarian F , Fan L S . Hydrodynamics of three-phase fluidized bed containing cylindrical hydrotreating catalysts [J]. Can .

J. Chem. Eng. , 1989 , 67 ( 2 ): 265 - 275 .

Briens L A , Briens C L , Margaritis A , et al . Minimum liquid fluidization velocity in gas-liquid-solid fluidized beds of low-density particles [J]. Chem. Eng. Sci ., 1997 , 52 ( 21/22 ): 4231 - 4238 .

Matsuura A , Fan L S . Distribution of bubble properties in a gas-liquid-solid fluidized bed [J]. AIChE J ., 1984 , 30 ( 6 ): 894 - 903 .

Yand G Q , Du B , Fan L S . Bubble formation and dynamics in gas-liquid-solid fluidization—a review [J]. Chem. Eng. Sci ., 2007 , 62 ( 1/2 ): 2 - 27 .

Pjontek D , Macchi A . Hydrodynamic comparison of spherical and cylindrical particles in a gas-liquid-solid fluidized bed at elevated pressure and high gas holdup conditions [J]. Powder Tech ., 2014 , 253 ( 1 ): 657 - 676 .

Jena H M , Sahoo B K , Roy G K , et al . Characterization of hydrodynamic properties of a gas-liquid-solid three phase fluidized bed with regular shape spherical glass bead particles [J]. Chem. Eng. J ., 2008 , 145 ( 1 ): 50 - 56 .

Sheikhi A , Sotudeh-Gharebagh R , Mostoufi N , et al . Experimental investigation on the hydrodynamics of a gas-liquid-solid fluidized bed using vibration signature and pressure fluctuation analyses [J]. Int . J . Heat Fluid Flow , 2013 , 42 ( 3 ): 190 - 199 .

Epstein N . Three-phase fluidization: some knowledge gaps [J]. Canadian J. Chem. Eng ., 1981 , 59 ( 6 ): 649 - 657 .

Muroyama K , Fan L S . Fundamentals of gas-liquid-solid fluidization [J]. AIChE J ., 1985 , 31 ( 1 ): 1 - 34 .

Fan L S . Gas-Liquid-Solid Fluidization Engineering [M]. Amsterdam : Elsevier Inc ., 1989 .

Ensuncho L , Alvarez-Cuenca M , Legge R . Removal of aqueous phenol using immobilized enzymes in a bench scale and pilot scale three-phase fluidized bed reactor [J]. Bioprocess. Biosyst. Eng ., 2005 , 27 ( 3 ): 185 - 191 .

Lin C N , Wu S Y , Chang J S . Hydrogen production with immobilized sewage sludge in three-phase fluidized-bed bioreactors [J]. Biotechnology Progress , 2010 , 19 ( 3 ): 828 - 832 .

Raju H P , Hossain S K M , Anatharaman N , et al . Biodesulphurization of natural gas in a three-phase fluidized bed bioreactor using thiobacillus dentrificans [J]. J.Sci. Ind. Res ., 2009 , 68 ( 5 ): 406 - 411 .

Hirata A , Takemoto T , Ogawa K , et al . Evaluation of kinetic parameters of biochemical reaction in three-phase fluidized bed biofilm reactor for wastewater treatment [J]. Biochem. Eng. J ., 2000 , 5 ( 2 ): 165 - 171 .

Roy N K , Guha D K , Rao M N . Suspension of solids in a bubbling liquid critical gas flow rates for compete suspension [J]. Chem. Eng. Sci ., 1964 , 19 ( 3 ): 215 - 225 .

Warsito W , Fan L S . Measurement of real-time flow structures in gas-liquid and gas-liquid-solid flow systems using electrical capacitance tomography (ECT) [J]. Chem. Eng. Sci ., 2001 , 56 ( 21/22 ): 6455 - 6462 .

Cui Z , Fan L S , Turbulence energy distributions in bubbling gas-liquid and gas-liquid-solid flow systems [J]. Chem. Eng. Sci ., 2004 , 59 ( 8 ): 1755 - 1766 .

Briens L A , Ellis N . Hydrodynamics of three-phase fluidized bed systems examined by stastical, fractal, chaos and wavelet analysis methods [J]. Chem. Eng. Sci ., 2005 , 60 ( 22 ): 6094 - 6106 .

Tang W T , Fan L S . Axial liquid mixing in liquid-solid and gas-liquid-solid fluidized beds containing low density particles [J]. Chem. Eng. Sci ., 1990 , 45 ( 2 ): 543 - 551 .

Zheng Y , Zhu J X , Wen J , et al . The axial hydrodynamic behavior in a liquid-solid circulating fluidized bed [J]. Can.J. Chem. Eng ., 1999 , 77 ( 2 ): 284 - 290 .

Fan L S , Muroyama K , Chern S H . Hydrodynamics of inverse fluidization in liquid-solid and gas-liquid-solid systems [J]. Chem. Eng. J ., 1982 , 24 ( 2 ): 143 - 150 .

Sokół W , Halfani M R . Hydrodynamics of a gas-liquid-solid fluidised bed bioreactor with a low density biomass support [J]. Biochem. Eng. J ., 1999 , 3 ( 3 ): 185 - 192 .

Comtw M P , Bastoul D , Hebrard G , et al . Hydrodynamics of a three-phase fluidized bed – the inverse turbulent bed [J]. Chem. Eng. Sci ., 1997 , 52 ( 21 ): 3971 - 3977 .

Hamdad I , Hashemi S , ROSSI D , et al . Oxygen transfer and hydrodynamics in three-phase inverse fluidized beds [J]. Chem. Eng. Sci ., 2007 , 62 ( 24 ): 7399 - 7405 .

Sun X L . Bubble-induced inverse gas-liquid-solid fluidized bed [D]. London : The University of Western Ontario , 2017 .

Huang J Q . Hydrodynamics in the gas-driven inverse liquid-solid fluidized bed [D]. London : The University of Western Ontario , 2017 .

Lee J C , Al-Dabbagh N J . Three phase fluidized beds-onset of fluidization at high gas rates [M]// Davidson J F, Keairns D L. Fluidization . Cambridge : Cambridge University Press , 1978 : 184 - 189 .

Zhang J P , Epstein N , Grace J R , et al . Minimum fluidization velocity of gas-liquid fluidized beds [J]. J.Chem. Eng. Japan , 2002 , 34 ( 2 ): 95 - 101 .

Asif M , Ibrahim A A . Minimum fluidization velocity and defluidization behavior of binary-solid liquid-fluidized beds [J]. Powder Tech ., 2002 , 126 ( 3 ): 241 - 254 .

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

环流流化床内大差异二元颗粒的流动机制研究

基于颗粒动态恢复系数二阶矩模型的液固流化床数值模拟研究

气液法流化床乙烯云聚合工艺开发及产品高性能化

摇摆流化床的气固流动特性

加温加压下CFD-PBM耦合模型空气-水两相流数值模拟研究