Course Details
Subject {L-T-P / C} : CH4112 : Fluidization Engineering { 3-0-0 / 3}
Subject Nature : Theory
Coordinator : Prof. Hara Mohan Jena
Syllabus
Module-I
Introduction, Applications and Mapping of Regimes: Introduction to fluidization, types of fluidization, fluidization phenomena, historical development and industrial applications, Gross behaviour of fluidized beds, Minimum fluidizing velocity and pressure drops, Voidage, transport disengaging height.
Module-II
Dense Bed Behaviour and Bubbling Bed: Distributor design, pressure drop requirement though distributor, behaviour in gas entry region, Davidson Model, coalescence and splitting of bubbles, bubbling bed models, flow models for bubbling beds.
Module-III
Entrainment and High Velocity Fluidization: Entrainment and elutriation from fluidized beds, free board behaviour and entrainment from tall vessels, TDH, high velocity fluidization, turbulent and fast fluidized beds and associated pressure drop
Module-IV
Solid Movement, Gas Dispersion, Mass and Heat Transfer and RTD : Vertical and horizontal movement of solids, mixing and segregation of particles, Dispersion of gas, gas interchange between bubble and emulsion, interchange coefficients, mass transfer and heat transfer coefficients, RTD and size distribution of solids in fluidized beds
Module-V
Circulating Systems, Gas-liquid-solid Fluidization and Semi-fluidization: Circulation circuits, circulation rates, flow in downcomers and pneumatic lines, gas-liquid-solid fluidization, Semi-fluidized beds, modes, taxonomy, design aspects and models.
Course Objectives
- To make students understand the wider application of Fluidization Engineering in chemical, petroleum, and petrochemical engineering in terms of reactors, combustors and other process units
- To have better understanding of fluidization phenomena, analyzing the behaviour associated with typical fluidized bed systems
- Develop generic models, investigate new diagnostic methods and analysis techniques to enable more reliable design and operation of industrial-scale fluidized bed systems
Course Outcomes
The student at the end of the course will have / able: <br />CO1 To understand, analyze and apply fluidized bed systems for Industrial applications. <br />CO2 To analyze the fluidized bed systems and apply models to predict the bubble behaviors. <br />CO3 To understand entrainment and elutriation behavior and high-velocity fluidization, estimate entrainment and pressure drop in fast fluidization. <br />CO4 To analyze and estimate particle mixing and segregation, heat and mass transfer coefficients, RTD. <br />CO5 To understand, analyze and design circulating systems gas-liquid-solid fluidized beds and semi-fluidized beds.
Essential Reading
- D. Kunii and O. Levenspiel, Fluidization Engineering, Butterworth-Heinemann , 2nd edition, 1991, Indian reprint 2012
- C. K. Gupta, D. Sathiyamoorthy, Fluid Bed Technology in Materials Processing, CRC Press , 1st edition, 1998.
Supplementary Reading
- J.F. Davidson and D. Harrison, Fludization, Academic Press , 1971
- L. S. Fan, Gas-liquid-solid Fludization Engineering, Butterworth-Heinemann , 1989
Journal and Conferences
- J. S. N. Murthy and G. K. Roy, "Semifluidization: a Review", Indian Chemical Engineer, Vol. XXIX No. 2 . Pages 9-22