Results 11 to 20 of about 3,917,650 (198)
Miniaturized gas–solid fluidized beds
Mechanics Research Communications, 2023 Fluidized beds are suspensions of grains by ascending fluids in tubes, and are commonly used in industry given their high rates of mass and heat transfers between the solids and fluid. Although usually employed in large scales (tube diameter of the order of the meter), fluidized beds have a great potential in much smaller scales (order of the ...
Fernando D. Cúñez, Erick M. Franklin
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Prediction of minimum fluidization velocity in pulsed gas-solid fluidized bed [PDF]
Chemical Engineering Journal, 2020 Abstract: Fluidized bed technology plays a vital role in petrochemistry and coal separation. To enhance fluidization stability, the flow is periodically introduced into the gas-solid fluidized bed to form a pulsed gas-solid fluidized bed. As the main fluidization parameter, the minimum fluidization velocity (umf) can reflect the change of the critical ...
Yanjiao Li +7 more
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Borescopy in pressurized gas‐solid fluidized beds [PDF]
AIChE Journal, 2018 A borescopic technique was used for finding the effect of pressure on the hydrodynamics of gas‐solid fluidized beds. The results showed that solids radial distribution may become more or less uniform with increasing pressure depending on the superficial gas velocity.
Mohammad Banaei +4 more
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Hybrid two-fluid DEM simulation of gas-solid fluidized beds. [PDF]
, 2007 Simulations of gas-solid fluidized beds have been performed using a hybrid simulation method, which couples the discrete element method (DEM) for particle dynamics with the averaged two-fluid (TF) continuum equations for the gas phase.
Sun, Jin
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Measurement of Flow Characteristics in a Bubbling Fluidized Bed Using Electrostatic Sensor Arrays [PDF]
, 2016 Fluidized beds are widely applied in a range of industrial processes. In order to maintain the efficient operation of a fluidized bed, the flow parameters in the bed should be monitored continuously. In this paper, electrostatic sensor arrays are used to
Yang, Yongrong +3 more
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Modelling and simulation of fluidized-bed boilers and gasifiers for carbonaceous solids. [PDF]
, 1987 SUMMARY A comprehensive computer simulation program that can deal with a wide range of different operating conditions in fluidized bed combustion and gasification has been developed. It includes the possibility of simulating operations with various
Souza-Santos, Marcio Luiz de
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Hydrodynamic and solid residence time distribution in a circulating fluidized bed: experimental and 3D computational study [PDF]
, 2008 Vertical profiles of local pressure, horizontal profiles of net vertical solid mass flux, and residence time distributions (RTD) of the solid phase are experimentally assessed in the riser of a small scale cold Circulating Fluidized Bed of 9 m high ...
Simonin, Olivier +3 more
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Multifluid Eulerian modeling of dense gas–solids fluidized bed hydrodynamics: Influence of the dissipation parameters [PDF]
, 2008 Computational fluid dynamic (CFD) models must be thoroughly validated before they can be used with confidence for designing fluidized bed reactors.
Coufort, Carole +7 more
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Rheology of gas–solid fluidized bed
Fuel Processing Technology, 2000 Abstract Coal dry beneficiation with gas–solid fluidized beds belongs to dry dense medium separation. It is important for us to study the rheological behaviors of gas–solid fluidized beds. In this paper, the viscosity of fluidized beds was measured by the solid-settling experiments.
Yaomin Zhao, Lubin Wei
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Fluidization of Gas-Solid in Atmospheric Bubbling Fluidized Bed Combustor [PDF]
Applied Mechanics and Materials, 2016 The fluidization behavior of a non-reactive gas-solid in the ABFBC was studied. Experiments were conducted using laser based Particle Imaged Velocimetry (PIV) with B Geldart silica sand (diameter, Ø = 300 – 425 μm) in 2 m high cylindrical combustion chamber. The PIV was used to determine the particle velocity distribution in the combustion chamber. The
Rosyida Permatasari +3 more
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