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2020/21 Taught Postgraduate Module Catalogue

CAPE5301M Separation Processes

30 creditsClass Size: 30

Module manager: Dr X Mao
Email: x.mao@leeds.ac.uk

Taught: Semesters 1 & 2 (Sep to Jun) View Timetable

Year running 2020/21

Pre-requisites

CAPE1020Engineering Science 1
CAPE2010Engineering Science 2

This module is mutually exclusive with

CAPE3301Separation Processes

This module is not approved as an Elective

Objectives

After completion of the module, students should understand the following:
- basic concepts related to separation processes;
- fundamental theories related to the separation processes;
- methodologies for designing simple separation devices.

Learning outcomes
On completion of the module students will be familiar with essential aspects of gas-liquid separation by absorption/desorption and distillation. They will understand the underlying physics associated with separation processes, including analogies between mass, momentum and heat transfers and be able to design absorption and distillation columns, falling film column using established theoretical approaches.
This module also considers a number of advanced concepts, such as non-isothermal absorption and mathematical modelling of mass transfer in falling films for the case of slow flux within the film and uniform interfacial solute concentration.

Skills outcomes
- Ability to understand underlying physics associated with separation processes
- Methodologies for designing devices for separation processes
- Transferable skills in linking fundamental theories to real world processes
- Written communication
- Critical reasoning
- Time and self management


Syllabus

Overview of Separation Processes

Mass Transfer:
- Revision of diffusion through gases and liquids - Fick's law
- Mechanism of absorption and desorption
- Mass transfer at gas/liquid interfaces
- The two-film theory and concentration profiles
- Concept of resistance to mass transfer
- Definition of overall and film coefficients
- Design of absorption columns for low concentration gases - definition of height and number of transfer units
- The general case of absorption of gases at high concentration/high flux cases
- Wetted walls columns and calculation of transfer coefficients
- Analogies of mass, heat and momentum transfer and definition of 'j' factors
- Co-current and countercurrent contacting
- Equilibrium conditions, tie lines and their extrapolation
- Liquid-liquid extraction
- Absorption accompanied by chemical reactions
- Non-isothermal absorption.

Distillation:
- Batch and continuous distillation
- Differential and flash distillation
- Separation of binary mixtures and multi-component mixtures
- The fractionating column for continuous distillation
- Principal features of construction and principles of operation
- Plate columns, bubble cap, sieve, and valve trays, etc
- MacCabe-Thiele graphical method
- Ponchon Savarit graphical method
- Lewis-Sorel method
- Lewis-Matheson method
- Underwood and Fenske equations
- Colburn method
- Pinch point for binary and multi-component systems
- Minimum reflux and total reflux
- Optimum number of plates
- Separation efficiency.

Teaching methods

Delivery typeNumberLength hoursStudent hours
Lecture401.0040.00
Tutorial21.002.00
Private study hours258.00
Total Contact hours42.00
Total hours (100hr per 10 credits)300.00

Private study

1.5 hours reading per lecture
196 hours on revision, completing assignments and doing a project

Opportunities for Formative Feedback

Questions during lectures
Assignment
Final examinations

Methods of assessment


Coursework
Assessment typeNotes% of formal assessment
Assignment.15.00
Assignment.15.00
Total percentage (Assessment Coursework)30.00

Normally resits will be assessed by the same methodology as the first attempt, unless otherwise stated


Exams
Exam typeExam duration% of formal assessment
Online Time-Limited assessment48 hr 35.00
Online Time-Limited assessment48 hr 35.00
Total percentage (Assessment Exams)70.00

Normally resits will be assessed by the same methodology as the first attempt, unless otherwise stated

Reading list

The reading list is available from the Library website

Last updated: 21/09/2020 17:07:36

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