Effect of density and disperse composition of solid particles on the structure of a developed fluidized bed

1988 ◽  
Vol 22 (5) ◽  
pp. 717-722
Author(s):  
A. M. Vasil'ev ◽  
A. S. Zheleznov ◽  
A. A. Oigenblik ◽  
Yu. A. Sergeev ◽  
V. G. Tsibul'skii
Keyword(s):  
Fluidized Bed ◽  
Solid Particles ◽  
Disperse Composition

scholarly journals Numerical simulation of gas-solid flow in an interconnected fluidized bed

2015 ◽  
Vol 19 (1) ◽  
pp. 317-328 ◽  
Author(s):  
Giuseppe Canneto ◽  
Cesare Freda ◽  
Giacobbe Braccio
Keyword(s):  
Numerical Simulation ◽  
Fluidized Bed ◽  
Experimental Tests ◽  
Solid Particles ◽  
Multiphase Model ◽  
Cold Model ◽  
Conservation Equations ◽  
Solid Flow

The gas-particles flow in an interconnected bubbling fluidized cold model is simulated using a commercial CFD package by Ansys. Conservation equations of mass and momentum are solved using the Eulerian granular multiphase model. Bubbles formation and their paths are analyzed to investigate the behaviour of the bed at different gas velocities. Experimental tests, carried out by the cold model, are compared with simulation runs to study the fluidization quality and to estimate the circulation of solid particles in the bed.

scholarly journals Liquidation of solid particles of polydispersed grained material

2020 ◽  
Vol 3 (10) ◽  
pp. 319-321
Author(s):  
Bakhronov Koshim Shayimovich ◽  
Khudoiberdieva Nazora Sharofovna ◽  
Yunusova Sitora Tolib qizi
Keyword(s):  
Granular Materials ◽  
Fluidized Bed ◽  
Experimental Studies ◽  
Solid Particles ◽  
General Picture

The results of experimental studies on the study of the expansion of the fluidized bed are presented. It is noted that the general picture of the expansion of the fluidized bed of polydisperse granular materials differs from monodisperse systems, and at the same time the porosity value of the pseudo-fluidized bed corresponds to the results of calculations according to the equations available in the literature.

Mathematical modeling of the heat-transfer process and solid particles in a fluidized bed

1982 ◽  
Vol 42 (2) ◽  
pp. 169-176
Author(s):  
V. A. Borodulya ◽  
Yu. S. Teplitskii ◽  
Yu. G. Epanov ◽  
Yu. E. Livshits ◽  
I. I. Yanovich
Keyword(s):  
Mathematical Modeling ◽  
Heat Transfer ◽  
Fluidized Bed ◽  
Transfer Process ◽  
Heat Transfer Process ◽  
Solid Particles

Mass transfer between solid particles and liquid in a three phase fluidized bed

1987 ◽  
Vol 65 (2) ◽  
pp. 228-236 ◽  
Author(s):  
A. Prakash ◽  
C. L. Briens ◽  
M. A. Bergougnou
Keyword(s):  
Mass Transfer ◽  
Fluidized Bed ◽  
Solid Particles ◽  
Three Phase

Fluidized-Bed Heat Transfer Modeling for the Development of Particle/Supercritical-CO2 Heat Exchanger

2017 ◽  
Author(s):  
Zhiwen Ma ◽  
Janna Martinek
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Heat Exchanger ◽  
Fluidized Bed ◽  
Solid Particles ◽  
Heat Transfer Modeling ◽  
Power Cycle ◽  
Heat Exchanger Design ◽  
Temperature Heat ◽  
The Cost

Concentrating solar power (CSP) technology is moving toward high-temperature and high-performance design. One technology approach is to explore high-temperature heat-transfer fluids and storage, integrated with a high-efficiency power cycle such as the supercritical carbon dioxide (s-CO2) Brayton power cycle. The s-CO2 Brayton power system has great potential to enable the future CSP system to achieve high solar-to-electricity conversion efficiency and to reduce the cost of power generation. Solid particles have been proposed as a possible high-temperature heat-transfer medium that is inexpensive and stable at high temperatures above 1,000°C. The particle/heat exchanger provides a connection between the particles and s-CO2 fluid in the emerging s-CO2 power cycles in order to meet CSP power-cycle performance targets of 50% thermal-to-electric efficiency, and dry cooling at an ambient temperature of 40°C. The development goals for a particle/s-CO2 heat exchanger are to heat s-CO2 to ≥720°C and to use direct thermal storage with low-cost, stable solid particles. This paper presents heat-transfer modeling to inform the particle/s-CO2 heat-exchanger design and assess design tradeoffs. The heat-transfer process was modeled based on a particle/s-CO2 counterflow configuration. Empirical heat-transfer correlations for the fluidized bed and s-CO2 were used in calculating the heat-transfer area and optimizing the tube layout. A 2-D computational fluid-dynamics simulation was applied for particle distribution and fluidization characterization. The operating conditions were studied from the heat-transfer analysis, and cost was estimated from the sizing of the heat exchanger. The paper shows the path in achieving the cost and performance objectives for a heat-exchanger design.

Elutriation of solid particles from a dense-phase fluidized bed

AIChE Journal ◽  
1960 ◽  
Vol 6 (2) ◽  
pp. 220-226 ◽  
Author(s):  
Chin Yung Wen ◽  
Richard F. Hashinger
Keyword(s):  
Fluidized Bed ◽  
Solid Particles ◽  
Dense Phase

scholarly journals Simultaneous Measurement of Bubbles and Solid Particles in a Gas-Solid Fluidized Bed.

1991 ◽  
Vol 17 (5) ◽  
pp. 1062-1065
Author(s):  
Yoshiyuki Ichikawa ◽  
Hiroyuki Hatano ◽  
Chiaki Kuroda ◽  
Masaru Ishida
Keyword(s):  
Fluidized Bed ◽  
Simultaneous Measurement ◽  
Solid Particles

Macroscopic pattern of mixing of solid particles in columns of units with a fluidized bed

1989 ◽  
Vol 56 (6) ◽  
pp. 659-662
Author(s):  
A. A. Oigenblik ◽  
Yu. S. Teplitskii ◽  
E. V. Pribylov ◽  
T. P. Eremenko ◽  
V. K. Vakar ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Solid Particles
Sign in / Sign up

Export Citation Format

Share Document