The Fast Fluidized Bed

A critical analysis of the acceleration length and pressure profile of single‐particle systems in a circulating fluidized bed

“…This indicates that the static pressure increases with particle density because if the density of the particles is more, then a higher gas velocity is necessary to maintain steady-state fluidization, which encountered more gravitational and drag forces. These results are in agreement with those reported by Yerushalmi et al ., [1] Weinstein et al . [25] and Li et al .…”

Prediction of cluster diameter for a wide range of particles for gas–solid dispersed phase in a fast fluidized‐bed reactor

“…It assumes importance where high-specific transfer rates, large solid throughputs and thermal uniformity within the reactor are required. [1] An FFB described as a dense entrained suspension, characterized by an aggregative state in which much of the solid is segregated in relatively large and densely packed group of particles. The common hydrodynamic features of a fast bed in a circulating fluidization system are usually large gas-solid slip velocity, clustering behavior of gas-solid suspension and solid downflow over the wall.…”

X-Ray Analysis of Fluidized Beds and Other Multiphase Systems

“…Such a system is called a "circulating" f luidized bed, and industrial interest in this type of system goes back to the earliest days of f luidization when they were employed in the catalytic cracking process [27]. Serious scientific study of the area dates from the work of the group at City College, New York, in the mid-1970s [28], although Kehoe and Davidson [29] had identified the transition from bubbling to turbulent f luidization somewhat earlier. One of the earliest reports of the application of the X-ray technique to study gas and solids f low in the riser section (the so-called "fast" bed) of a circulating bed was that of Weinstein et al [30].…”