Circulating fluidized beds solids flow control devices

Fig. 10.5. A schematic representation of a circulating fluidized bed. The CFB loop consists of a riser, gas-solid cyclone separators, standpipe type of downcomer, and a non-mechanical solids flow control device. Reprinted from [82] with permission from...

In the CFB loop the pressure drop over the riser must be balanced by that imposed by the flow through its accompanying components such as the downcomer and the recirculation device. The pressure drops across the downcomer, the solids circulation and control device, and the riser are the major elements in the pressure balance around the CFB loop. The pressure drop balance is thus such that the sum of the control device, fluidized bed riser and cyclone... 

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