EL3491 Mass Transfer Syllabus:
EL3491 Mass Transfer Syllabus – Anna University Regulation 2021
UNIT I MOLECULAR DIFFUSION
Introduction to mass transfer operations; Molecular diffusion in gases, liquids and solids; diffusivity measurement and prediction; multi-component diffusion.
UNIT II CONVECTIVE TRANSFER AND INTERPHASE MASS TRANSFER
Eddy diffusion, concept of mass transfer coefficients, theories of mass transfer, different transport analogies, application of correlations for mass transfer coefficients, inter phase mass transfer, relationship between individual and overall mass transfer coefficients.
UNIT III ABSORPTION
Gas Absorption and Stripping – Equilibrium; material balance; limiting gas-liquid ratio; tray tower absorber – calculation of number of theoretical stages, tray efficiency, tower diameter; determination of height of packing using HTU and NTU calculations.
UNIT IV DISTILLATION
Vapour liquid equilibria – Raoult’s law, Principle of distillation – flash distillation, differential distillation, steam distillation, multistage continuous rectification, Number of ideal stages by Mc.Cabe – Thiele method, Total reflux, minimum reflux ratio, optimum reflux ratio.
UNIT V LEACHING & EXTRACTION
Liquid – liquid extraction – solvent characteristics-equilibrium stage wise contact calculations for single stage extraction, multi-stage cross current extraction, multi-stage counter current operation. Solidliquid equilibria- equilibrium diagram for leaching, single stage leaching, multi stage continuous cross current and counter current leaching, stage calculations, stage efficiency.
TOTAL: 45 PERIODS
COURSE OUTCOMES:
On completion of the course students are expected to
CO1: Understand the fundamentals, types and mechanism of mass transfer operations
CO2: Understand the theories of mass transfer and the concept of inter-phase mass nsfer
CO3: Understand concept and determine the theoretical stages, number of transfer units and height requirements for a gas absorption process
CO4: Identify the suitable distillation techniques, determine the number of trays for stage wise contact and determine the height of the packed tower
CO5: Apply the ternary equilibrium diagram concepts for separation of liquid-liquid extraction process , Describe core principles of leaching, estimate the number of ideal stages in leaching operation
TEXT BOOKS:
1. Robert E. Treybal, “Mass Transfer Operations” McGraw Hill Education India
2. Christie John Geankoplis Transport Processes and Separation Process Principles 4th Edition PHI
3. K Asokan, Mass Transfer concepts, University Press
REFERENCES:
1. Warren Mc Cabe, Julian Smith , Peter Harriott, Unit Operations of Chemical Engineering 7th Edition, Mc Graw Hil.
2. J.M.Coulson and J.F. Richardson with J.R.Backhurst and J.H.Harker, “Coulson and Richardson’s chemical Engineering”, Vol.1, “Fluid Flow, Heat Transfer and Mass Transfer”, Butterworth Heinmann, 6th Edition, 2000.