Generalized fluidization diagram

The load characteristic of circulating fluidized bed boilers is closely related to the gas-solid flux through the combustor. Thus, choice of coal size and the proper gas-solid separator deserves attention. Generally, the fraction of particles below 0.1 mm is smaller than 10%, which could be removed only by a cyclone separator, while the major fraction of coarser particles could be easily separated by inertia or gravity (Li and Kwauk, 1981). The diagram of ash balance for a circulating fluidized bed boiler, shown in Fig. 22, can... 

Figure 24 Generalized fluidization diagram with homogeneous drag (air-FCC...

Figure 25 Generalized fluidization diagram with EMMS drag coefficient (air-FCC particle system, dp = 75(im, />p=1500 kg/m />g=1.3kg/m //g=1.8x 10 Pa s, Ut=0.2184 m/s) (Ullah et al, 2013b).

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