Abstract
Hydrodynamics and mass transfer of gas–liquid flow are explored under ambient conditions in an Advanced-Flow Reactor (AFR), an emerging commercial system designed for continuous manufacture. Carbon dioxide/water is the model system used in this study for a range of flow rates for gas and liquid of 5.6–103 mL/min and 10–80 mL/min, respectively. Bubble size distribution, gas holdup, specific interfacial area, pressure drop, and mass transfer coefficients are determined from flow visualization experiments and compared with conventional gas–liquid contactors. These variables are mainly influenced by the inlet flow rates and inlet composition. Average bubble sizes (dB) of 0.9–3.8 mm, gas holdup (eG) of 0.04–0.68, specific interfacial areas (a) of 160–1300 m2/m3, and overall mass transfer coefficients (kLa) of 0.2–3 s–1 were obtained for the vertical orientation of the AFR. Although effect of gravity is present for this system, no significant effect on the hydrodynamic properties was observed. The measured pre...
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