Relationship between critical fluidization velocity and terminal velocity
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In the design of fluidized bed reactors, issues related to the critical fluidization velocity and terminal velocity come into play. May I ask: what are the definitions of the two, and what is the relationship between them?
The critical fluidization velocity is generally the initial fluidization velocity, and it is also the velocity at which a fixed-bed system transitions to a fluidized-bed system. The terminal velocity is also known as the carry-away velocity, which represents the maximum speed at which the catalyst can settle. When designing fluidized beds, we usually make the upper diameter larger; however, with today’s highly efficient cyclones, this velocity is no longer important