Module Details
| Module Code: |
CHEP8012 |
| Title: |
Mass Transfer
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Long Title:
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Mass Transfer
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| NFQ Level: |
Advanced |
| Valid From: |
Semester 1 - 2016/17 ( September 2016 ) |
| Field of Study: |
5240 - Chemical & Process Eng
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| Module Description: |
This module introduces the student to the concept of mass transfer as an integral part of chemical engineering processes.
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| Learning Outcomes |
| On successful completion of this module the learner will be able to: |
| # |
Learning Outcome Description |
| LO1 |
Recognise and explain mass transfer concepts and terminology for fluids in laminar and turbulent flow. |
| LO2 |
Solve problems associated with mass transfer between solid and fluid phases. |
| LO3 |
Solve problems associated with mass transfer between liquid and gas phases. |
| LO4 |
Select and design equipment for use in Industrial Mass Transfer Processes. |
| LO5 |
Analyse and solve adsorption problems using solute movement analysis for linear systems. |
| Dependencies |
Module Recommendations
This is prior learning (or a practical skill) that is strongly recommended before enrolment in this module. You may enrol in this module if you have not acquired the recommended learning but you will have considerable difficulty in passing (i.e. achieving the learning outcomes of) the module. While the prior learning is expressed as named MTU module(s) it also allows for learning (in another module or modules) which is equivalent to the learning specified in the named module(s).
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| None |
Incompatible Modules
These are modules which have learning outcomes that are too similar to the learning outcomes of this module. You may not earn additional credit for the same learning and therefore you may not enrol in this module if you have successfully completed any modules in the incompatible list.
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| None |
Co-requisite Modules
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| No Co-requisite modules listed |
Requirements
This is prior learning (or a practical skill) that is mandatory before enrolment in this module is allowed. You may not enrol on this module if you have not acquired the learning specified in this section.
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| No requirements listed |
| Indicative Content |
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1. Diffusion in Liquids and Gases:
Steady-state molecular diffusion in fluids at rest or in laminar flow; steady state diffusion through stagnant gas, steady-state equimolal counter diffusion, diffusivity of gases; worked examples; steady state diffusion through stagnant liquids, steady-state equimolal counterdiffusion, diffusivity of liquids; worked examples
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2. Mass Transfer Coefficients:
F and k type coefficients and inter relationships; analytical solution to a specific problem in laminar flow; turbulent flow film theory, penetration theory, surface-renewal theory, combination film-surface-renewal theory; surface stretch theory.
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3. Interphase Mass Transfer:
Equilibrium; diffusion between phases; local two-phase transfer coefficients; local overall mass transfer coefficients; average overall coefficients; material balances for steady-state co-current processes, steady-state counter-current processes; stage efficiency; worked examples.
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4. Humidification and Cooling Towers:
Definitions; absolute and relative humidity; dry-bulb and wet-bulb temperatures; percentage absolute humidity; humid volume, humid heat; enthalpy; adiabatic saturation curves; cooling towers, calculation of the height of packing; humidifying towers, calculation of the height of packing.
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5. Drying:
Equilibrium; batch drying, direct driers, indirect driers, freeze drying; the rate of batch drying, the mechanism of batch drying; cross-circulation drying, through-circulation drying; worked examples.
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6. Leaching
Unsteady-state operation, Steady-state operation, calculation methods, worked examples
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7. Gas Absorption:
Continuous contact equipment; height of Gas Transfer Unit (HtG); number of Gas transfer Units (NtG); height of an Overall Gas Transfer Unit (HtOG); relationship between HtG and HtOG; height of Liquid Transfer Unit (HtL); number of Liquid Transfer Units (NtL); height of an Overall Liquid Transfer
Unit (HtOL); number of Overall Liquid Transfer Units (NtOL); relationship between HtL and HtOL; solution of problems.
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8. Crystallisation
Phase equilibria, Solubility and Saturation, Crystal nucleation, growth and yield, Crystallisation from solutions, Crystallisation by Cooling, Evaporation and Vacuum. Crystallisation Equipment.
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9. Adsorption
Adsorption isotherms including Langmuir Isotherm, Solute movement analysis: solute wave, thermal wave. Temperature Swing Adsorption, Pressure Swing Adsorption
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Module Content & Assessment
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| Assessment Breakdown | % |
|---|
| Coursework | 30.00% |
| End of Module Formal Examination | 70.00% |
Assessments
| End of Module Formal Examination |
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| Reassessment Requirement |
Repeat examination
Reassessment of this module will consist of a repeat examination. It is possible that there will also be a requirement to be reassessed in a coursework element.
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The University reserves the right to alter the nature and timings of assessment
Module Workload
| Workload: Full Time |
| Workload Type |
Contact Type |
Workload Description |
Frequency |
Average Weekly Learner Workload |
Hours |
| Lecture |
Contact |
Lecures/Class Tutorials |
Every Week |
4.00 |
4 |
| Independent & Directed Learning (Non-contact) |
Non Contact |
Study/Home Tutorials/Past Paper Problems |
Every Week |
3.00 |
3 |
| Total Hours |
7.00 |
| Total Weekly Learner Workload |
7.00 |
| Total Weekly Contact Hours |
4.00 |
| This module has no Part Time workload. |
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Module Resources
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| Recommended Book Resources |
|---|
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Treybal, R.E.. (1980), Mass Tranfer Operations, 3rd Edn. McGraw-Hill.
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Wankat, P.C.. (2011), Separation Process Engineering: Includes Mass Transfer Analysis, Third (International). Pearson, [ISBN: 0132790211].
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Richardson,J.F.,Coulson,J.M.,Backhurst,J.R.,Harker,J.H.. (1999), Chemical Engineering, Volume 1, 4th Edn. Butterworth-Heinemann, [ISBN: 978-0-7506-44].
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J. M. Coulson and J. F. Richardson; with J. R. Backhurst and J. H. Harker. (2002), Coulson & Richardson's Chemical Engineering Volume 2, 5th Edn. Butterworth Heinemann, p.1232, [ISBN: 978-0750644457].
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Henley, Seader and Roper. (2012), Separation Process Principles, 3rd. Wiley, [ISBN: 978-1-118-50656-1].
| | Supplementary Book Resources |
|---|
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Sherwood,T.K., Pigford, R.L.,Wilke,C.R.. (1975), Mass Transfer, McGraw-Hill.
| | This module does not have any article/paper resources |
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| This module does not have any other resources |
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