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Characterization of Micromixing and Determination of Mass-Transfer Coefficient in a new Double-Spinning-Disk Contactor
, M.Sc. Thesis Sharif University of Technology ; Molaei Dehkordi, Asghar (Supervisor)
Abstract
High mixing efficiency and high liquid-liquid mass transfer rate are two key features of spinning disk contactors. This work presents the experimental investigation of mixing and liquid-liquid mass transfer characteristics in a new double coaxial spinning disks contactor. The micromixing efficiency was investigated using a standard system of competitive parallel reaction known as iodide/iodate test reaction. The influences of various operating conditions such as the rotational speed of the disks, the direction of rotation, the feed radial location, the feed distribution pattern, the distance between the disks, and the feed flow rate on the mixing quality were examined carefully. The obtained...
Modeling and Simulation of Micromixing Phenomenon in a New Double-Spinning-Disc Reactor
, M.Sc. Thesis Sharif University of Technology ; Molaei Dehkordi, Asghar (Supervisor)
Abstract
Mixing efficiency is an important performance indicator in many chemical reactors. In the present study, using a computational fluid dynamics model, the quality of micromixing in a double-disk-spinning reactor with the ability to rotate both disks using a fast iodide-iodate competitive reaction has been investigated. The purpose of this study was to investigate the effect of operational parameters such as the speed and direction of rotation of disks, radius and number of entry points of one feed, distance between disks, volumetric flow of feed, feed inlet nozzle diameter and acid concentration (H+) on quality of micromixing. The simulation results show that by increasing the rotation speed...