Effect of temperature and apparent liquid viscosity on the hydrodynamics of liquid–solid tapered inverse fluidized bed: experimental studies compared with empirical models

被引:0
作者
H. Upender
K. Anand Kishore
机构
[1] National Institute of Technology,Department of Chemical Engineering
来源
SN Applied Sciences | 2020年 / 2卷
关键词
Tapered inverse fluidized bed; Minimum fluidization velocity; Bed voidage; Heat transfer; Apparent viscosity;
D O I
暂无
中图分类号
学科分类号
摘要
In the present work, immersed heater to bed heat transfer coefficient and related hydrodynamics were determined along with different angles (7.85 and 6.8) of the tapered inversed fluidized bed. Carboxyl methylcellulose was used to change the water viscosity by using a power-law model. The hydrodynamics was compared for two different angles of beds. Furthermore, minimum fluidization velocities were carried out for different liquid apparent viscosities and different angles of beds and compared with previous models. The heat transfer coefficient was found to be increasing with liquid velocity and bed voidage, respectively, and it was also found that the bed voidage is high for a high diameter of particles. The correlation was developed between the bed expansion ratio and independent parameters by response surface methodology in design expert software v.9.
引用
收藏
相关论文
共 71 条
[1]  
Wang D(2010)Removal of emulsified oil from water by inverse fluidization of hydrophobic aerogels Powder Technol 203 298-309
[2]  
Silbaugh T(2008)Brewery wastewater treatment using anaerobic inverse fluidized bed reactors Bioresour Technol 99 3009-3015
[3]  
Pfeffer R(2018)Evaluation of correlations for minimum fluidization velocity (Umf) in gas-solid fluidization Powder Technol 323 454-485
[4]  
Lin YS(2013)A tapered fluidized bed as a bioreactor Enzym Eng XVIII 255-261
[5]  
Alvarado-Lassman A(2000)Minimum fluidization velocity and friction factor in a liquid-solid inverse fluidized bed reactor Bioprocess Eng 22 461-466
[6]  
Rustrián E(2009)Minimum fluidization velocity of a three-phase conical fluidized bed in comparison to a cylindrical fluidized bed Ind Eng Chem Res 48 27-36
[7]  
García-Alvarado MA(2017)Process aspects of three-phase inverse fluidized bed bioreactor: a review J Environ Chem Eng 5 3518-3528
[8]  
Anantharaman A(2012)Fluid bed porosity mathematical model for an inverse fluidized bed bioreactor with particles growing biofilm J Environ Manage 104 62-66
[9]  
Cocco RA(2007)Oxygen transfer and hydrodynamics in three-phase inverse fluidized beds Chem Eng Sci 62 7399-7405
[10]  
Chew JW(2017)Prediction of solids residence time distribution in cross- flow bubbling fluidized bed Powder Technol 320 555-564