scholarly journals PARTICLE MOVEMENT IN A GAS-SOLID FLUIDIZED BED

1968 ◽  
Vol 1 (2) ◽  
pp. 185-186
Author(s):  
YOSHIRO MORI ◽  
KOZO NAKAMURA
Keyword(s):  
Fluidized Bed ◽  
Particle Movement

507 Bed-Particle Movement around Vertical-Tubes in a Fluidized-Bed

2000 ◽  
Vol 2000.75 (0) ◽  
pp. _5-13_-_5-14_
Author(s):  
Toshikazu ONODERA ◽  
Hisashi UMEKAWA ◽  
Mamoru OZAWA ◽  
Nobuyuki TAKENAKA
Keyword(s):  
Fluidized Bed ◽  
Particle Movement ◽  
Vertical Tubes

Large-particle movement and drag coefficient in a fluidized bed

1997 ◽  
Vol 26 (1) ◽  
pp. 54-67 ◽  
Author(s):  
Mamoru Ozawa ◽  
Hisashi Umekawa ◽  
Takeshi Matsuda ◽  
Nobuyuki Takenaka ◽  
Masahito Matsubayashi ◽  
...  
Keyword(s):  
Drag Coefficient ◽  
Fluidized Bed ◽  
Large Particle ◽  
Particle Movement

Lagrangian modeling and simulation of effect of vibration on cohesive particle movement in a fluidized bed

2007 ◽  
Vol 62 (1-2) ◽  
pp. 232-245 ◽  
Author(s):  
Sunun Limtrakul ◽  
Wanwarang Rotjanavijit ◽  
Terdthai Vatanatham
Keyword(s):  
Modeling And Simulation ◽  
Fluidized Bed ◽  
Particle Movement ◽  
Lagrangian Modeling

scholarly journals Particle movement on a perforated plate distributor of fluidized bed.

1980 ◽  
Vol 13 (2) ◽  
pp. 137-142 ◽  
Author(s):  
MASAYUKI HORIO ◽  
HIROSHI KIYOTA ◽  
IWAO MUCHI
Keyword(s):  
Fluidized Bed ◽  
Perforated Plate ◽  
Particle Movement

scholarly journals On the use of 3D-printed flow distributors to control particle movement in a fluidized bed

2018 ◽  
Vol 140 ◽  
pp. 194-204 ◽  
Author(s):  
Akinlolu Oyekunle Oluseun Odeleye ◽  
Chih-Yao Chui ◽  
Linh Nguyen ◽  
Alfonso A. Castrejón-Pita ◽  
Hua Ye ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Particle Movement ◽  
3D Printed

Hydrodynamic Performance of a Novel Design of Pressurized Fluidized Bed Combustor

2003 ◽  
Author(s):  
Alan L. T. Wang ◽  
John F. Stubington
Keyword(s):  
Fluidized Bed ◽  
Gas Flow ◽  
Scaling Laws ◽  
Scaling Law ◽  
Gas Injection ◽  
Hydrodynamic Performance ◽  
Silica Sand ◽  
Particle Movement ◽  
Cold Model ◽  
Fluidized Bed Combustor

A bench-scale fluidized bed combustor with a novel fluidizing gas injection manifold was successfully built for characterization of Australian black coals under pressurized fluidized bed combustion (PFBC) conditions. The bed of silica sand (mean size 1.3 mm and density 2700 kg/m3) was 40 mm ID with a static height of 75 mm. This facility was designed to operate at 1.6 MPa, 850°C and a fluidizing velocity of 0.9 m/s, identical to those used industrially, in order to match as closely as possible the local hydrodynamic environment around each coal particle in an industrial PFBC. To verify satisfactory hydrodynamic performance with the novel gas injection manifold, the fluidization was directly investigated by measuring differential pressure fluctuations under both ambient and PFBC conditions. In addition, a Perspex cold model was built to simulate at ambient conditions the hydrodynamics of the hot bed in this PFBC facility. The cold model was constructed to a geometric scale of 1.431:1, determined by Glicksman’s scaling law. Under PFBC conditions of 1.6 MPa, 850°C and 0.9 m/s, the bed in UNSW’s PFBC facility operated in a stable bubbling regime and the solids were very well mixed. The bubbles in this PFBC were effectively cloudless and no gas backmixing or slugging occurred; so the gas flow in this bed could be modeled by assuming two phases (bubble and particulate) with plug flow through each phase. The results from the cold model showed that the ratio of Umf for the simulated bed to Umf for the hot PFBC bed matched the conditions proposed by Glicksman’s scaling laws. The bubbles rose along the bed with axial and lateral movements (moving both towards and from the wall), and erupted from the bed surface evenly and randomly at different locations. Two patterns of particle movement were observed in the cold model bed: a circular pattern near the top section, and a rising and falling pattern dominating the particle movement in the lower section created by the rising bubbles.

scholarly journals Behavior of Particle Movement in a Fluidized Bed

1965 ◽  
Vol 29 (11) ◽  
pp. 863-867,a1 ◽  
Author(s):  
Ichiro Hiraki ◽  
Kunio Yoshida ◽  
Daizo Kunii ◽  
Shin-ichi Urabe
Keyword(s):  
Fluidized Bed ◽  
Particle Movement

VISUALIZATION OF LARGE-PARTICLE MOVEMENT IN FLUIDIZED-BED BY NEUTRON RADIOGRAPHY

2001 ◽  
Vol 16 (2-6) ◽  
pp. 377-389 ◽  
Author(s):  
H. UMEKAWA ◽  
M. OZAWA ◽  
T. ONODERA ◽  
Y. OKURA ◽  
N. TAKENAKA ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Large Particle ◽  
Neutron Radiography ◽  
Particle Movement

scholarly journals Large Particle Movement and Drag Coefficient in a Fluidized Bed.

1996 ◽  
Vol 62 (601) ◽  
pp. 3413-3420 ◽  
Author(s):  
Mamoru OZAWA ◽  
Hisashi UMEKAWA ◽  
Takeshi MATSUDA ◽  
Nobuyuki TAKENAKA ◽  
Masahito MATSUBAYASHI ◽  
...  
Keyword(s):  
Drag Coefficient ◽  
Fluidized Bed ◽  
Large Particle ◽  
Particle Movement

Application of photochromic dye to the measurement of particle movement in a fluidized bed

2003 ◽  
Vol 129 (1-3) ◽  
pp. 22-29 ◽  
Author(s):  
Takami Kai ◽  
Tatsuji Kanda ◽  
Takeshige Takahashi ◽  
Masahiro Kawaji
Keyword(s):  
Fluidized Bed ◽  
Particle Movement ◽  
Photochromic Dye
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