Gas-solid fluidized bed
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I would like to ask the experts: why, once the fluidized bed starts to flow, does the total pressure drop across the bed remain constant and not change with the flow rate?
I’m not sure if this is a way to answer your question; it’s like a piece of wood floating in water, where the buoyant force is equal to its weight. Of course, such gas-solid flow conditions are much more complex. Since my work also involves fluidized beds, the pressure drop is generally not very stable. Is the pressure drop in your case quite stable?
First of all, thank you! I have recently started learning the theories in this field, and I feel that my foundation isn’t solid enough. Since I work in this area of technology, could you explain things using theoretical concepts?
Reply to 1# Feilongzaiyou: Theoretically, the fluidized bed remains unchanged and the bed pressure stays essentially constant. However, when the airflow is increased, the pressure drop across the air distribution plate rises; therefore, theoretically, this drop should increase as well. If there is no change, has the bed layer changed? Overall, though, this is a relatively responsible industrial and mining enterprise.