Open AccessHydrodynamic studies in two - phase stirred fluidized bed with three types of impellers
Author(s) -
N Priya Deepa,
K. Saravanan
Publication year - 2021
Publication title -
chemical industry and chemical engineering quarterly
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.189
H-Index - 26
eISSN - 2217-7434
pISSN - 1451-9372
DOI - 10.2298/ciceq200305029d
Subject(s) - fluidized bed , pressure drop , impeller , aeration , materials science , drop (telecommunication) , petrochemical , mass transfer , mechanics , fluidization , environmental science , petroleum engineering , chromatography , waste management , chemistry , environmental engineering , mechanical engineering , engineering , physics
Fluidized beds are extensively used in petrochemical, chemical process industries, pharmaceutical, food and biotechnology industries. They are preferred to process materials with a wide range of particle size distribution and offer even temperature distribution and excellent heat and mass transfer. To improve the quality of the fluidized bed, mechanical stirring can be employed along with aeration. Hence, an attempt was made to study the hydrodynamics of stirred fluidized bed using air-water system. The characteristics of the fluidized bed can be well understood by studying its hydrodynamics. Pressure drop is one of the vital factors which affect the performance of fluidized bed. Hence, the effects of gas velocity and stirrer speed on pressure drop and power were studied for both stirred and unstirred bed conditions. It was observed that pressure drop and power increases with increase in gas velocity and stirrer speed. Also, the pressure drop and power are lower for the stirred bed condition than the unstirred bed condition.