Investigation of the hydrodynamics of packed-fluidized beds: Characterization of solids flux

Modeling of an Autothermal Process for Integrated Carbon Dioxide Capture and Methanation by Magnesium Looping (MgO/MgCO3) and Renewable Hydrogen

“…Finer and lighter particles featuring smaller terminal and fluidization velocities can indeed be transported to the reactor exit or segregated to the top of a fluidized bed. This allows selective particle circulation between the reactors R 1 and R 2 . − Alternatively, the catalyst could be anchored to reactor internal surfaces/walls, or packed-fluidized bed (i.e., confined fluidization) could be exploited to fluidize smaller sorbent particles in the void of a packed catalyst . The CH 4 -rich stream exiting R 2 is sent in series to two heat exchangers, HX 3 and HX 4 .…”

“…40−43 Alternatively, the catalyst could be anchored to reactor internal surfaces/walls, or packed-fluidized bed (i.e., confined fluidization) could be exploited to fluidize smaller sorbent particles in the void of a packed catalyst. 44 The CH 4rich stream exiting R 2 is sent in series to two heat exchangers, HX 3 and HX 4 . In the former, a part of the heat is exploited for H 2 preheating; in the latter, the temperature is reduced to the dew point using a service fluid that recovers the heat of the still hot stream.…”

Hydrodynamic Insights on Floating Bubbling Fluidized Beds: Dynamic Solutions for Mitigating Gas Maldistribution

“…Immersed objects in fluidized beds have received considerable attention in recent studies, highlighting their critical role in influencing bed dynamics and reactor performance [22]. Researchers studied a variety of immersed objects, ranging from static internals, such as baffles [23] and heat exchangers [24], to dynamic elements, like moving packings [25] and disks [26]. These studies showed that immersed objects can have a profound effect on particle distribution and movement, gas flow patterns, and heat transfer within the bed.…”