CFD simulation of effects of the configuration of gas distributors on gas–liquid flow and mixing in a bubble column

CFD-PBM approach with modified drag model for the gas–liquid flow in a bubble column

“…15 and bubble plume induces large circulation vortices inside the bubble column. As illustrated by Li et al,(Li et al, 2009) the existence of such vortices causes poor entrainment of the bubbles around the vortices. In the case of using gas distributor B, the gas phase is sparged through this gas distributor and then enters the bubble column…”

Study on a recovery of rare earth oxides from a LiCl–KCl–RECl3 system

“…For a dechlorination and oxidation test of rare earth chlorides in LiCl-KCl molten salts as a gas-liquid reaction contact efficiency between rare earth chlorides and oxygen gases as well as operation temperature is an important factor, and it depends on the gas distributor design and the gas flow rate [16][17][18][19]. Vaporization of molten salts can be facilitated by large sizes of gas bubbles and that can cause problems in the experimental apparatus operation.…”

CFD-PBM Approach with Different Inlet Locations for the Gas-Liquid Flow in a Laboratory-Scale Bubble Column with Activated Sludge/Water

“…The inlet was set as a single-gas phase. The speed inlet boundary conditions were used: the superficial gas velocity was 0.0024 m/s, the outlet was set as a degassing boundary condition [30,41], and the other physical boundaries were set as solid-wall boundary conditions. The residual error was 10 −5 , the time step was 0.01 s, and the maximum iteration number was 30.…”

“…We adopted the Sato and Sekoguchi model [28] that has been widely used in the bubble column numerical simulations to address bubble-induced turbulence [29][30][31]. The formulation of viscosity due to the induced turbulence can be expressed as:…”