CH3551 Mass Transfer II Syllabus:

CH3551 Mass Transfer II Syllabus – Anna University Regulation 2021

OBJECTIVE:

The course is aimed to
Impart knowledge on how certain substances undergo the change in composition, change in phases and exhibit their properties according to the changed environment. Also, to design absorber and stripper, distillation column, extraction and leaching equipment and adsorber.

UNIT I ABSORPTION

Equilibrium and operating line concept in absorption calculations; types of contactors, design of packed and plate type absorbers; Operating characteristics of stage wise and differential contactors, concepts of NTU, HTU and overall volumetric mass transfer coefficients; multicomponent absorption; mechanism and model of absorption with chemical reaction; thermal effects in absorption process.

UNIT II DISTILLATION

Vapour liquid equilibria – Raoult’s law, vapor-liquid equilibrium diagrams for ideal and non-ideal systems, enthalpy concentration diagrams. Principle of distillation – flash distillation, differential distillation, steam distillation, multistage continuous rectification, Number of ideal stages by Mc.Cabe – Thiele method and Ponchan – Savarit method, Total reflux, minimum reflux ratio, optimum reflux ratio. Introduction to multi-component distillation, azeotropic and extractive distillation

UNIT III LIQUID-LIQUID EXTRACTION

Liquid – liquid extraction – solvent characteristics-equilibrium stage wise contact calculations for batch and continuous extractors- differential contact equipment-spray, packed and mechanically agitated contactors and their design calculations-packed bed extraction with reflux. Pulsed extractors, centrifugal extractors-Supercritical extraction

UNIT IV LEACHING

Solid-liquid equilibria- leaching equipment for batch and continuous operations, calculation of number of stages – Leaching – Leaching by percolation through stationary solid beds, moving bed leaching, counter current multiple contact (shank’s system), equipments for leaching operation, multi stage continuous cross current and countercurrent leaching, stage calculations, stage efficiency.

UNIT V ADSORPTION, ION EXCHANGE AND MEMBRANE SEPARATION PROCESSES

Adsorption – Types of adsorption, nature of adsorbents, adsorption equilibria, effect of pressure and temperature on adsorption isotherms, Adsorption operations – stage wise operations, steady state moving bed and unsteady state fixed bed adsorbers, break through curves. Principle of Ion exchange, techniques and applications. Solid and liquid membranes; concept of osmosis; reverse osmosis; electro dialysis; ultrafiltration.

TOTAL: 45 PERIODS

OUTCOMES:

On the completion of the course students are expected to
CO1: Understand concept and determine the theoretical stages, number of transfer units and height requirements for a gas absorption process.
CO2: Identify the suitable distillation techniques, determine the number of trays for stage wise contact and determine the height of the packed tower
CO3: Apply the ternary equilibrium diagram concepts to determine the number of stages required for separation of liquid-liquid extraction process
CO4: Describe core principles of leaching, setting up mass balances, use graphical methods to estimate the number of ideal stages in leaching operation
CO5: Understand the concept of adsorption techniques, various isotherms and ion exchange Process and Formulate to solve mass and energy balances for unit operations such as absorption, distillation, extraction, leaching, adsorption and other separation processes

TEXT BOOKS:

1. Treybal, R.E., “Mass Transfer Operations “, 3rd Edn., McGraw-Hill,2017.
2. Geankoplis, C.J., “Transport Processes and Unit Operations”, 4th Edition, Prentice Hall Inc., New Jersey, 2003.
3. Wankat, P., “Equilibrium Stage Separations”, Prentice Hall, 1998.
4. B. K. Dutta.,”Mass Transfer and separation processes,Prentice Hall,2006

REFERENCES:

1. McCabe, W.L., Smith, J.C., and Harriot, P., “Unit Operations in Chemical Engineering”, 7th Edition, McGraw-Hill, 2017.
2. Seader J.D. and Henley E.J., “Separation Process Principles”, 2nd Ed., John Wiley, 2006.
3. King,C.J.,“SeparationProcesses“,2ndEdn.,TataMcGraw-Hill1980

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