Flow behavior of wakes in a three-phase slurry bubble column with viscous liquid medium

Lím, D.; Jang, Ji Hwa; Kang, Yong; Jun, Kil-Woung

doi:10.1007/s11814-010-0403-4

Cited by 4 publications

(3 citation statements)

References 13 publications

(23 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The voltagetime signals, corresponding to the pressure-time signals, were processed by a data acquisition system (NI cDAQ-9205) and a personal computer at a rate of 1000 Hz. The total sample length was longer than 30,000 data [16][17][18][19].…”

Section: Methodsmentioning

confidence: 99%

Holdup and Flow Behavior of Fluidized Solid Particles in a Liquid-Solid Circulating Fluidized Bed

Lím¹,

Lim²,

Jin³

et al. 2014

Korean Chemical Engineering Research

Self Cite

View full text Add to dashboard Cite

− Characteristics of holdup and flow behavior of fluidized solid particles were investigated in a liquid-solid circulating fluidized bed (0.102 m × 3.5 m). Effects of liquid velocity (U L ), particle size (d P ) and solid circulation rate (G S ) on the solid holdup, overall particle rising velocity, slip velocity between liquid and particles and hydrodynamic energy dissipation rate in the riser were examined. The particle holdup increased with increasing d P or G S but decreased with increasing U L . The overall particle rising velocity increased with increasing U L or G S but decreased with increasing d P . The slip velocity increased with increasing U L or d P but did not change considerably with G S . The energy dissipation rate, which was found to be closely related to the contacting frequency of micro eddies, increased with increasing d P , G S or U L . The solid particle holdup was well correlated with operating variables such as U L , d P and G S .

show abstract

Section: Methodsmentioning

confidence: 99%

Holdup and Flow Behavior of Fluidized Solid Particles in a Liquid-Solid Circulating Fluidized Bed

Lím¹,

Lim²,

Jin³

et al. 2014

Korean Chemical Engineering Research

Self Cite

View full text Add to dashboard Cite

show abstract

“…Regarding the behavior of liquid field of velocity, Li et al [29] showed that the liquid velocity, which increases with increasing the gas superficial velocity, is influenced by the particle concentration slightly and is higher in the core of larger reactors compared to the smaller ones. Also, Lim et al [43] claimed that the rising velocity of wakes and their equivalent sizes increases with increasing the liquid viscosity (1.0-50.0 mPa s), gas velocity (0.04-0.12 m s -1 ) as well as particle concentration (0-25 wt %). Lim et al [43] also reported that the wakes' holdup and frequency increase with increasing the velocity of gas while they decrease with increasing the particle concentration and liquid viscosity.…”

Section: Flow Regimementioning

confidence: 99%

“…Also, Lim et al [43] claimed that the rising velocity of wakes and their equivalent sizes increases with increasing the liquid viscosity (1.0-50.0 mPa s), gas velocity (0.04-0.12 m s -1 ) as well as particle concentration (0-25 wt %). Lim et al [43] also reported that the wakes' holdup and frequency increase with increasing the velocity of gas while they decrease with increasing the particle concentration and liquid viscosity. Similarly, Abdulah [25] reported that in cylindrical slurry bubble column (CSBC) and trapped slurry bubble column (TSBC), particles are distributed along the column longitude more uniformly for a higher value of gas velocity and particle concentration.…”

Section: Flow Regimementioning

confidence: 99%

Effect of Solid Particles on the Slurry Bubble Columns Behavior – A Review

Mahmoudi

Hlawitschka

2021

ChemBioEng Reviews

View full text Add to dashboard Cite

A wide-ranging review is presented on the most focal aspects of gas-liquid-solid reactors to discuss the fresh headways towards the understanding of slurry bubble column reactors' behavior. In more detail, in this critical review, published works' findings concerning the effects of solid particles characteristics (size, concentration and density) on volumetric mass transfer coefficient, liquid-side mass transfer coefficient, gas-liquid interfacial area, gas hold-up and flow regime are deliberated. Besides, the effects of other pivotal parameters such as pressure, temperature, reactor size, height of liquid, gas distributor, density, and viscosity on the performance of slurry bubble column reactors are considered. Eventually, regarding the effects of each of the aforementioned parameters on the performance of reactor, logical conclusions are drawn.

show abstract

Heat Transfer in Bubble Columns with High Viscous and Low Surface Tension Media

Kim¹,

Lím²,

Kang

2014

Korean Chemical Engineering Research

View full text Add to dashboard Cite

− Axial and overall heat transfer coefficients were investigated in a bubble column with relatively high viscous and low surface tension media. Effects of superficial gas velocity (0.02~0.1 m/s), liquid viscosity (0.1~0.3 Pa·s) and surface tension (66.1~72.9×10-3 N/m) on the local and overall heat transfer coefficients were examined. The heat transfer field was composed of the immersed heater and the bubble column; a vertical heater was installed at the center of the column coaxially. The heat transfer coefficient was determined by measuring the temperature differences continuously between the heater surface and the column which was bubbling in a given operating condition, with the knowledge of heat supply to the heater. The local heat transfer coefficient increased with increasing superficial gas velocity but decreased with increasing axial distance from the gas distributor and liquid surface tension. The overall heat transfer coefficient increased with increasing superficial gas velocity but decreased with increasing liquid viscosity or surface tension. The overall heat transfer coefficient was well correlated in terms of operating variables such as superficial gas velocity, liquid surface tension and liquid viscosity with a correlation coefficient of 0.91, and in terms of dimensionless groups such as Nusselt, Reynolds, Prandtl and Weber numbers with a correlation of 0.92;

show abstract

Flow behavior of wakes in a three-phase slurry bubble column with viscous liquid medium

Cited by 4 publications

References 13 publications

Holdup and Flow Behavior of Fluidized Solid Particles in a Liquid-Solid Circulating Fluidized Bed

Holdup and Flow Behavior of Fluidized Solid Particles in a Liquid-Solid Circulating Fluidized Bed

Effect of Solid Particles on the Slurry Bubble Columns Behavior – A Review

Heat Transfer in Bubble Columns with High Viscous and Low Surface Tension Media

Contact Info

Product

Resources

About