01530nas a2200169   4500008004100000022001400041245005900055210005600114260007100170300001400241490000700255520093100262100002301193700002801216700002301244856009301267       2014                        eng d  a0888-588500a3D flow reactors: flow, hydrodynamics, and performance0 a3D flow reactors flow hydrodynamics and performance  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcFEB  a1916-19230 v533 a<p>A device comprised of a sequence of converging or diverging units aligned either in an axisymmetric or nonaxisymmetric manner can be used as a continuous flow reactor. Here we report the analysis of flow and hydrodynamics (pressure drop, residence time distribution, and mass transfer) for an axisymmetric geometry of a 3D flow reactor for single phase and two-phase flows. CFD simulations of the single phase flow have been used for identification of the precise geometrical configuration. The sequence of converging units as a flow reactor has been found to always be better than the sequence of diverging units. The residence time distribution analysis also favored the choice of converging flow as a better option. The performance of the device was verified by successfully carrying out a highly exothermic two-phase aromatic nitration of benzaldehyde (Delta H-r approximate to -172 kg/mol) with fuming nitric acid.</p>1 aSharma, Mrityunjay1 aReddy, Venkateswara, S.1 aKulkarni, Amol, A.  uhttps://library.ncl.res.in/content/3d-flow-reactors-flow-hydrodynamics-and-performance-0