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
[11]  
Scott CD(1997)Hydrodynamics of a three-phase fluidized bed—the inverse turbulent bed Chem Eng Sci 52 3971-3977
[12]  
Hancher CW(2014)Hydrodynamic behavior of inverse fluidized bed biofilm reactor for phenol biodegradation using Pseudomonas fluorescens Korean J Chem Eng 31 436-445
[13]  
Shumate SE(1993)Hydrodynamic studies on inverse gas-liquid-solid fluidization Chem Eng J 51 109-112
[14]  
Lakshmi ACV(2009)Performance of inverse fluidized bed bioreactor in treating starch wastewater Front Chem Eng China 3 235-239
[15]  
Balamurugan M(2004)Stochastic simulation of hydrodynamics of a liquid–solid inverse fluidized bed Ind Eng Chem Res 17 684-690
[16]  
Sivakumar M(2000)Hydrodynamic transition from fixed to fully fluidized beds for three-phase inverse fluidization Korean J Chem Eng 38 1916-1922
[17]  
Zhou D(1992)Bed expansion of liquid-solid inverse AIChE J 24 143-150
[18]  
Dong S(1982)Hydrodynamic characteristics of inverse fluidization in liquid-solid and gas-liquid-solid systems Chem Eng J 41 2058-2063
[19]  
Wang H(2002)Heat transfer and hydrodynamics in two- and three-phase inverse fluidized beds Ind Eng Chem Res 155 501-507
[20]  
Bi HT(2019)An experimental investigation of wall-bed heat transfer and flow characteristics in a swirling fluidized bed reactor Appl Therm Eng 344 463-474