Comparison of Hydrodynamic Behaviour of Conical Fluidized Bed Risers with a Columnar Fluidized Bed Riser

2021 ◽  
pp. 567-578
Author(s):  
Hirakh Jyoti Das ◽  
Abinash Mahapatro ◽  
Pinakeswar Mahanta ◽  
Rituraj Saikia
Keyword(s):  
Fluidized Bed ◽  
Hydrodynamic Behaviour ◽  
Conical Fluidized Bed

Interpretation of the hydrodynamic behaviour in a conical fluidized bed dryer

2009 ◽  
Vol 64 (8) ◽  
pp. 1739-1746 ◽  
Author(s):  
Michael Wormsbecker ◽  
Todd Pugsley ◽  
Helen Tanfara
Keyword(s):  
Fluidized Bed ◽  
Fluidized Bed Dryer ◽  
Hydrodynamic Behaviour ◽  
Conical Fluidized Bed

Segregation by size difference in a conical fluidized bed of pharmaceutical granulate

2005 ◽  
Vol 153 (1) ◽  
pp. 72-80 ◽  
Author(s):  
Michael Wormsbecker ◽  
Amber Adams ◽  
Todd Pugsley ◽  
Conrad Winters
Keyword(s):  
Fluidized Bed ◽  
Size Difference ◽  
Conical Fluidized Bed

Contribution of hydrodynamic characteristics on the performance of an aerobic biofilm conical fluidized bed

2011 ◽  
Vol 63 (6) ◽  
pp. 1160-1167 ◽  
Author(s):  
D. Zhou ◽  
X. T. Bi ◽  
S. Dong
Keyword(s):  
Fluidized Bed ◽  
Microbial Population ◽  
Expansion Ratio ◽  
Hydrodynamic Characteristics ◽  
Internal Circulation ◽  
Axial Distribution ◽  
Biofilm Thickness ◽  
Cell Matrix ◽  
Bed Expansion ◽  
Conical Fluidized Bed

The performance of a conical fluidized bed (TFB) bioreactor, including the biofilm thickness, microbial space density, microbial cell matrix and its efficiency for COD degradation at a bed expansion ratio of 14 to 90%, was studied and compared with a cylindrical fluidized bed (CFB) bioreactor. The hydrodynamic characteristics of the TFB, especially the internal-circulation of bioparticles associated with its unique tapered geometry of the bed, created a much more uniform axial distribution of the bioparticles, leading to the formation of thinner and more compacted biofilms in the TFB compared to that in the CFB. The thinner biofilm in the TFB tended to be stable and possessed more than 6 times of microbial population density compared to the CFB. As a result, thinner biofilms in the TFB contributed to a higher COD removal efficiency, which remained at over 95% at operated expansion ratios, about 15 to 25% higher than that in the CFB.

A Future Trend on Research Scope of Numerical Simulation on Conical Fluidized Bed

2020 ◽  
pp. 401-437 ◽  
Author(s):  
Hirakh Jyoti Das ◽  
Pinakeswar Mahanta ◽  
Rituraj Saikia
Keyword(s):  
Heat Transfer ◽  
Fluidized Bed ◽  
Scale Up ◽  
Future Trend ◽  
Numerical Techniques ◽  
Cfd Modelling ◽  
Mixing Characteristics ◽  
Fluidized Bed Combustor ◽  
Computing Speed ◽  
Conical Fluidized Bed

Fluidized bed technology is a well-established environment friendly technology, by which energy can be generated through combustion and gasification techniques. It is widely prevalent today owing to its excellent heat transfer, mixing characteristics and compactness. The design and scale-up of the fluidized beds are vital to the enhancement of heat transfer and mixing characteristics. However, heat transfer characteristics play a key role in determining the combustion and gasification characteristics. CFD is a technique which helps to optimize the design and operation of fluidized bed combustor and gasifiers. Enhancement of computing speed and numerical techniques has led to CFD being used as a widely implemented tool to provide a bridge between laboratory scale and industrial study. In this chapter, a comprehensive review of CFD modelling and experimental study on the conical fluidized bed has been carried out. Primarily this chapter demonstrates probable future accomplishments and identifies trends and regions where further research is required.

Tomographic imaging of a conical fluidized bed of dry pharmaceutical granule

2006 ◽  
Vol 169 (1) ◽  
pp. 49-59 ◽  
Author(s):  
Jason Wiens ◽  
Todd Pugsley
Keyword(s):  
Fluidized Bed ◽  
Tomographic Imaging ◽  
Conical Fluidized Bed

Suspended solid abatement in a conical fluidized bed flocculator

2012 ◽  
Vol 7 (1) ◽  
pp. 127-134 ◽  
Author(s):  
Dandan Zhou ◽  
Shuangshi Dong ◽  
Keyu Li ◽  
Huizhong Jiang ◽  
Dandan Shang
Keyword(s):  
Fluidized Bed ◽  
Suspended Solid ◽  
Conical Fluidized Bed

EFFECT OF PARTICLE SIZE DISTRIBUTION ON LOCAL VOIDAGE IN A BENCH-SCALE CONICAL FLUIDIZED BED DRYER

2002 ◽  
Vol 20 (6) ◽  
pp. 1273-1289 ◽  
Author(s):  
Helen Tanfara ◽  
Todd Pugsley ◽  
Conrad Winters
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Fluidized Bed ◽  
Bench Scale ◽  
Fluidized Bed Dryer ◽  
Effect Of Particle Size ◽  
Conical Fluidized Bed

Hydrodynamic Behaviour of Common Salt Water (NaCl Solution) in a Glass-beads Packed Cylindrical Fluidized Bed

2015 ◽  
Vol 9 (2) ◽  
pp. 1-6
Author(s):  
Harekrushna Sutar ◽  
Kashinath Barik ◽  
Anup Bairagi ◽  
Rabiranjan Murmu
Keyword(s):  
Fluidized Bed ◽  
Salt Water ◽  
Glass Beads ◽  
Common Salt ◽  
Nacl Solution ◽  
Hydrodynamic Behaviour
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