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fluidization    
流化; 流体化

流化; 流体化


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  • Introduction to Fluidization - AIChE
    Fluidization theory Particles become fluidized when an upward-flowing gas imposes a high enough drag force to overcome the down-ward force of gravity The drag force is the frictional force imposed by the gas on the particle; the particle imposes an equal and opposite drag force on the gas Thus, as a particle becomes more fluidized, it affects the local gas velocity around it due to these
  • Flow through Packed and Fluidized Beds - Clarkson
    Particulate fluidization occurs in liquids As the velocity of the liquid is increased past the minimum fluidization velocity, the bed expands uniformly, and uniform conditions prevail in the liquid solid mixture In contrast, bubbling fluidization occurs in gas-fluidized beds
  • FLUIDIZATION - home. agh. edu. pl
    1 2 The phenomenon of fluidization To simply decribe the idea behind fludization process one can say that it is the operation that can change a system a solid particles into fluidlike suspension in gas or liquid This method of contacting of this two phase mixture have some unusual characteristics that are widely used in many fields of chemical industry Simplified diagram showing the idea of
  • Fluidization - madar-ju. com
    Fluidization Principles and definitions Fluidization-Definition Fluidization is defined as
  • Fluidization - BME
    Theoretical background During fluidization, granulates are held afloat using a fluid (gas or liquid) flowing upwards The phenomenon can be best compared to boiling liquids The application of a fluidized bed provides a very intensive contact between the solid phase (the particles) and the fluid It is a special case of flow in a packed column and can be found in several sectors of the
  • Handbook of Fluidization and Fluid-Particle Systems
    Fluidization and fluid-particle system engineering is being applied in industries as diverse as basic and specialty chemicals, mineral processing, coal and biomass gasification and combustion for power gen eration, environmental technologies, resource recovery, FCC petroleum refining, pharmaceuticals, biotechnology, cement, ceramics, and other
  • Fluidization Engineering - Arun Mujumdar
    agglomeration operation Additional, control strategies based on monitoring the fluidization regime are proposed and presented as the basic requirement for operatin vi industrial applications Based on this introduction, the crystallization operation is analyzed in vibrofluidized bed units and the dimensionless parameters for describing this
  • CFD-DEM modeling the effect of column size and bed height on minimum . . .
    The fluidization characteristics of a given kind of particles in MFBs are different from those in the ordinary-size fluidized beds due to much stronger wall effects From the viewpoint of operating and controlling a MFB kinetic analyzer, knowing the minimum fluidization and minimum bubbling velocities (Umf and Umb) enables researchers to determine suitable gas velocities so that fluidization
  • Chapter Title - University of Michigan
    In this section we shall first describe the regions of fluidization and calculate the minimum and maximum fluidization velocities Next, the Kunii-Levenspiel bubbling bed model is described in detail 2 Finally, equations to calculate the fraction of the bed comprising bubbles, the bubble size, the velocity of bubble rise, and the fractional
  • Fluid Dynamics of Gas Solid Fluidized Bed - IntechOpen
    1 Introduction Fluidization refers to the contact between a bed of solids and a flow of fluid As a result, the solid particles are transformed into a fluid-like behavior that can be used for different purposes The fluidized bed reactor is one of the most important technologies for gas-solid heterogeneous operations chemical or petrochemical, considering catalytic or non catalytic processes





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