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PCH221 FLUIDIZATION ENGINEERING |
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3 |
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3.5 |
Course Objective:
To learn
the fluidization phenomena, industrial applications of fluidized beds and their
operational and design aspects.
Introduction: The phenomena of
fluidization, Liquid-like behaviour of fluidized beds, Comparison with other
contacting methods, Fluidization quality.
Industrial Applications of
Fluidized Beds:
Physical operations, Synthesis reactions, Cracking of
hydrocarbons, Combustion and incineration, Carbonization and gasification, Biofluidization.
Fluidization and Mapping of
Regimes:
Characterization of particles, Determination of effective sphericity,
Fluidization without carryover of particles, Fluidization with carryover of
particles, Mapping of fluidization regimes.
Dense Fluidized Beds: Distributors, Gas
entry region, Gas jets, Pressure drop across distributors, Design of
distributors, Bubbles in dense beds, Free-board behaviour, Estimation of TDH,
entrainment and Elutriation from fluidized beds.
Bubbling Fluidized Beds: Estimation of bed
properties, Heat and mass transfer, Flow models for bubbling beds, FCC and gasifier design for high and low density beds.
Course
learning outcomes (CLOs):
The
students will be able to:
1. understand
the fluidization phenomena and operational regimes
2. design
various types of gas distributers for fluidized beds and determine
effectiveness of gas mixing at the bottom region
3. estimate
pressure drop, bubble size, TDH, voidage, heat and
mass transfer rates for the fluidized beds
4. develop
mathematical modeling for fluidized beds
5. design
gas-solid fluidized bed reactors
Recommended Books:
1.
Kunni,
D., and Levenspiel, O., Fluidization Engineering,
Butterworth-Heinemann (1991).
2.
Yang,
W., and Amin, N.D., Fluidization Engineering:
Fundamentals and Applications, American Institute of Chemical Engineers (1988).
3.
Fan,
L.S., Gas-Liquid-Solid Fluidization Engineering, Butterworths
(1989).
4.
Yang,
W.C., Handbook of Fluidization and Fluid-particle Systems, CRC Press
(2003).