Hydrodynamics of countercurrent gas–liquid flow in inclined packed beds – A prospect for stretching flooding capacity with small packings

Offshore Floating Packed‐Bed Reactors: Key Challenges and Potential Solutions

“…The effect of tilt angle on the gas-liquid distribution for the static packed bed was first investigated by analyzing the cross- Contrarily, column deviations from verticality by 5°, 10°, and 15°resulted in the development of gas-liquid segregation zones leading to phase maldistribution similar to literature findings for other types of inclined packed bed [18,19,21]. Increasing the tilt angle intensified the gravity-driven force, whereby liquid moved to the lower-wall zone forcing the gas phase to migrate to the upper-wall zone, thereby giving rise to a segregated flow pattern in the bed.…”

“…Meanwhile, flow dynamics and phase maldistributions in static tilted configurations viewed as limiting column postures on floating systems have been thoroughly investigated and are referred as the worst-case performance scenario [17][18][19][20][21].…”

Flue‐Gas Desulfurization by Using a HiGee Electric‐Field Device

“…This can be attributed to the fact that it has a larger specific area, and therefore, can produce more and finer microliquid elements, resulting in an increased surface renewal rate, and hence, improved mass‐transfer performance. It is also evident that, at a fixed rotation speed of 800 rpm, the pressure drops in the various packing types were 210, 253 and 91 Pa for the rippled gauze, fine metal gauze, and metal gauze packing, respectively; these values are lower than that of a conventional packed tower .…”

Hydrodynamics of inclined packed beds under flow modulation ‐ CFD simulation and experimental validation

“…The interphase interaction forces developed by Attou et al 27 were added to the liquid-and gas-phase momentum balance equations as drag forces (Table 2, Eqs. [6][7][8][9][10][11]. In these equations, the traditional parameter values of 180 and 1.8 were set for the Ergun constants, E 1 and E 2 , respectively.…”

“…Recent experimental researches on the hydrodynamics of stationary inclined packed beds, viewed as limiting column postures on ships, revealed that column deviations from verticality impact negatively the flow regime for all gas-liquid contacting modes, that is, cocurrent downward, upward, and countercurrent alike. [7][8][9] For gas-liquid descending flows, Schubert et al 7 observed a worsening of phase distribution accompanied with reductions of two-phase pressure drop and catalyst coverage area by the liquid as a consequence of inclining the bed. Examination of the hydrodynamics of gas-liquid cocurrent upflow packed beds showed that vessel deviation from upright position prompted remarkable gas-liquid disengagement accompanied with a decrease in the overall pressure drop and an increase of the average liquid saturation.…”