The gas-solid system shows large instabilities with bubbling and gas channelling with rise in flow rate beyond minimum fluidization.
2.
C ) " Bubbling Fluid Bed " : When the flow rate increases beyond the minimum fluidization velocity, bed starts bubbling.
3.
B ) " Minimum fluidization " : When the gas velocity reaches ( " U mf " ) minimum fluidization velocity, and all the particle are just suspended by the upward flowing fluid.
4.
B ) " Minimum fluidization " : When the gas velocity reaches ( " U mf " ) minimum fluidization velocity, and all the particle are just suspended by the upward flowing fluid.
5.
The flexibility of using GLSCFB allow the fluidized bed to operate at much more higher liquid velocity than the minimum fluidization velocity which in turn increase the fractional conversion as well as production efficiency per unit cross-sectional area of the bed.
6.
Beyond the minimum fluidization velocity ( u \ geq u _ { mf } ), the bed material will be suspended by the gas-stream and further increases in the velocity will have a reduced effect on the pressure, owing to sufficient percolation of the gas flow.
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