Results 201 to 210 of about 1,311 (265)
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Dynamic waves in fluidized beds
Powder Technology, 1995Abstract Published results on the velocity of propagation and the change of amplitude of dynamic waves in fluidized beds are reviewed and re-evaluated. A distinction is drawn between pressure waves and solids concentration waves. Over the range of frequencies of interest in fluidized beds, predictions of the velocity of compression waves by pseudo ...
D. MUSMARRA +3 more
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Bed Expansion – Extending Correlations for Fluidized Beds with Inserts to Open Fluidized Beds
Chemical Engineering & Technology, 2007AbstractBed expansion occurs during the operation of gas‐fluidized beds and is influenced by particle properties, gas properties and distributor characteristics. It has a significant bearing on heat and mass transfer phenomena within the bed. A method of predicting bed expansion behavior from other fluidizing parameters would be a useful tool in the ...
Leaper, Mark C., Hilal, N.
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Fluidization and Fluidized Bed
2019This chapter introduces a multiscale method for modeling gas–solid flows, from steady-state modeling for quick engineering design, continuum model for industrial scale reactor simulation, discrete particle method for lab-scale reactor simulation to direct numerical simulation for exploring the underlying mechanics.
Xinhua Liu +5 more
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Stability of Bubbles in Fluidized Beds
Industrial & Engineering Chemistry Fundamentals, 1974A LINEARIZED STABILITY ANALYSIS OF THE UPPER SURFACE OF A BUBBLE IN A FLUIDIZED BED LEADS TO PREDICTIONS OF INITIAL GROWTH RATES AND MOST SENSITIVE WAVELENGTHS FOR DISTURBANCES OF THE INTERFACE.IT IS SHOWN THAT THE DEGREE OF INSTABILITY IS PRIMARILY A FUNCTION OF THE EFFECTIVE KINEMATIC VISCOSITY OF THE DENSE PHASE, WHILE THE INTERSTITIAL FLUID ...
CLIFT, R, GRACE, J, WEBER, ME
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Minimum fluidization velocity and bed expansion of the inverse fluidized bed
Particulate Science and Technology, 2023To define the fluid-dynamic properties of inverse fluidized beds, studies of the minimum fluidization velocity and bed expansion were performed in this work. The experiments were performed in an inverse fluidized bed of polypropylene and polystyrene particles in a cylindrical column using water and an aqueous glycerol solution of different ...
Šućurović, Katarina +4 more
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Fluidization And Fluidized Beds
2019One of the most unusual types of equipment used by chemical engineers is the fluidized bed, a device in which solid particles, for example sand or catalyst particles, are made to behave like elements of a fluid, and hence are “fluidized”. The state of being fluidized, called “fluidization”, turns out to be advantageous for a number of important ...
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Design of fluidized‐bed fermentors
Biotechnology and Bioengineering, 1986AbstractDesigning a fluidized‐bed bioreactor requires choosing the best support particle (if any). Effectiveness factors (proportional to reactor volumetric productivity) are derived for flocs, solid spherical supports, porous supports, and adsorbent supports.
G F, Andrews, J, Przezdziecki
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