01969nas a2200169   4500008004100000022001400041245007400055210006900129260007100198300001600269490000700285520132800292100003201620700002301652700002201675856010201697       2012                        eng d  a0888-588500aHydrodynamics of liquid-liquid dispersion in an advanced-flow reactor0 aHydrodynamics of liquidliquid dispersion in an advancedflow reac  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcDEC  a16251-162620 v513 a<p>Hydrodynamics and mass transfer of immiscible liquid-liquid flows are explored in an Advanced-Flow Reactor (AFR). These systems are emerging as one of the major commercial systems for small scale continuous flow chemistry, and characterization of the transport phenomena is critical for reaction implementation. With hexane/water as a model system, we use flow visualization techniques to determine drop size distribution, hexane holdup, and specific interfacial areas for a phase flow rate range of 10-80 mL/min. The complex geometry of the AFR with its continuously changing cross section along the flow path and strategically placed obstacles creates pressure changes that cause drop breakup and enhance mass transfer. Observations show that a wide range of average drop size (0.33-1.3 mm) can be achieved in the AFR depending upon the inlet flow rates and inlet composition. Pressure drop measurements are performed to estimate the power consumption and are used to compare the efficiency of AFR with conventional liquid-liquid contactors. The analysis shows that, similar to microreactors, the AFR can provide specific interfacial areas (1000-10 000 m(-1)) and overall mass transfer coefficients (1.9-41 s(-1)) a few orders of magnitude larger than conventional stirred tank reactors and also the static mixers.</p>1 aNieves-Remacha, Maria, Jose1 aKulkarni, Amol, A.1 aJensen, Klavs, F.  uhttps://library.ncl.res.in/content/hydrodynamics-liquid-liquid-dispersion-advanced-flow-reactor-0