Rotating fluidized bed with a static geometry: Guidelines for design and operating conditions

Modeling fast biomass pyrolysis in a gas–solid vortex reactor

“…Previous experimental and computational analyses by the authors, both published [24,45] and unpublished, have indicated that the maximum volume of a stable bed of solids in the specific GSVR geometry examined here is approximately 0.004 m 3 , or an equivalent sand mass of 11 kg. Note that the maximum stable bed mass or volume is a function of the particle properties and independent reactor variables, such as gas feed flow rate and reactor geometry, but the value of 0.004 m 3 provides a reasonable estimate and order-of-magnitude quantification.…”

“…Particles will leave the bed with the gas through the central outlet if the drag force imparted by the gas flow overcomes the centrifugal force of the rotating particles. Fluid and particle dynamics in non-reacting flows in GSVRs have been studied by several researchers [17][18][19][20][21][22][23][24][25][26][27][28].…”

A CFD-PBM model considering ethylene polymerization for the flow behaviors and particle size distribution of polyethylene in a pilot-plant fluidized bed reactor

“…Conservation equations of mass, momentum and energy are expressed as follows [25,[46][47][48][49], and the continuity equations for gas and solid phases can be written as,…”

Effect of drag correlation and bubble‐induced turbulence closure on the gas hold‐up in a bubble column reactor

“…It is possible to measure and analyze these variables by performing numerical simulations using a mathematical model which will, in turn, help in designing a more efficient bubble column reactor. Computational fluid dynamics (CFD) is increasingly employed for prediction of flow behavior in multiphase reactors during the last two decades following the enormous developments in the computing resources and numerical techniques . In particular, experimental studies can be supported with numerical simulations and mathematical models are being developed to describe better the phenomena taking place in a bubble column reactor.…”

“…Computational fluid dynamics (CFD) is increasingly employed for prediction of flow behavior in multiphase reactors during the last two decades following the enormous developments in the computing resources and numerical techniques. 4 In particular, experimental studies can be supported with numerical simulations and mathematical models are being developed to describe better the phenomena taking place in a bubble column reactor. In this regard, the hydrodynamics have been studied and analyzed both experimentally and numerically in several studies for different flow parameters.…”