Premium
Fluid Flow Characteristics of String Reactors Packed with Spherical Particles
Author(s) -
Vonortas A.,
Hipolito A.,
Rolland M.,
Boyer C.,
Papayannakos N.
Publication year - 2011
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201000165
Subject(s) - mechanics , pressure drop , residence time distribution , packed bed , spheres , spiral (railway) , pellet , materials science , residence time (fluid dynamics) , liquid flow , flow (mathematics) , chemistry , physics , chromatography , engineering , mechanical engineering , composite material , geotechnical engineering , astronomy
Abstract A hydrodynamic investigation of three geometries of string pellet reactors filled with spheres was conducted. Two geometries were circular spiral channels, while the third was a straight horizontal square channel. Stimulus‐response experiments provided data for residence time distribution analysis from which Pe numbers and liquid holdup were deduced. Flow regimes and transitions were determined from visual observations through the transparent tube wall. For the whole range of the experimental conditions applied in this work and for all reactors, the ratio of gas to liquid velocities, V g / V l , is a controlling parameter for Pe number, holdup, and pressure drop.