Hydrodynamics and Particle Mixing Characteristics of a Ternary Mixture in a Gas-Solid Fluidized Bed
Jaya Bharathi. J.1, K. Saravanan2
1Ms. Jaya Bharathi. J, Assistant Professor, Department of Chemical Engineering, Kongu Engineering College, Perundurai, Erode.
2Dr. K. Saravana, Professor, Department of Chemical Engineering, Kongu Engineering College, Perundurai, Erode.
Manuscript received on November 15, 2019. | Revised Manuscript received on November 23, 2019. | Manuscript published on November 30, 2019. | PP: 2520-2526 | Volume-8 Issue-4, November 2019. | Retrieval Number: D7120118419/2019©BEIESP | DOI: 10.35940/ijrte.D7120.118419
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Gas-Solid Fluidized Beds are widely used in current industrial practices for their high efficiency in producing products of very high standards. The study of bed dynamics has become an important concern for the design of fluidized beds. Various parameters like pressure, temperature, gas velocity, mean residence time and solids composition affect the bed behavior. In this view, an experimental study was carried out to determine the influence of gas flow rate, mixing time, solids composition and bed height on mixing/segregation behaviour of the bed of particles. Since fluidized beds involving more than two solids are more frequently encountered in current industrial practices, the experiments were conducted using three solid sand particles of average sizes 231 μm, 335 μm, and 510 μm. Various mixing patterns were observed for different mixing times (10, 20 and 30 minutes), different gas flow rates (7.5, 12.5, 17.5, 22.5 and 27.5 LPM), and different solids ratio. Good mixing occurred at an optimum mixing time of 30 minutes and gas flow rates of 17.5 LPM and 22.5 LPM at all solids ratio. The components exhibited relatively better mixing at intermediate bed heights.
Keywords: Fluidized Bed, Particle Mixing, Mixing Time, Gas Flow Rate, Bed Height, Solids Ratio.
Scope of the Article: Network Traffic Characterization and Measurements.