Postgraduate Course: Batchwise and Semibatch Processing (MSc) (PGEE11157)
|School||School of Engineering
||College||College of Science and Engineering
|Credit level (Normal year taken)||SCQF Level 11 (Postgraduate)
||Availability||Not available to visiting students
|Summary||This course reviews types of batch processes and industries where they are employed. The equipment used in batch processes is described. Scheduling and consequent equipment sizing is explained. Topics presented in detail include: unsteady state reaction and heat transfer, crystallisation, fluid mechanics in agitated vessels, batch distillation,
Hazards associated with batch processes and the hazard and operability analysis for a batch plant are discussed.
Lectures (each topic is equivalent to approximately two hours of lectures)
Topic 1. Introduction to batch and semi-batch process, factors favouring batch or semi-batch processes. Typical equipment used in batch processes.
Topic 2. Batch scheduling. Tools and techniques. Gant charts. Sizing of batch processing equipment. Dealing with bottlenecks.
Topic 3. Agitation, mixing and multiphase systems - types of agitator, flow patterns in vessels, power consumption in agitation, mixing time. Dealing with dispersed liquids, solids and gases in liquid systems. Agitation energy, mass transfer considerations.
Topic 4. Aspects of batch reactor design - revision of qualitative reactor considerations. Effect of excess reactants on time to complete reactions. Pre-equilibria - determination of observed rate constants. Competing reactions. Mixing effects in reactors.
Topic 5. Heat transfer - Heat transfer utilities. Steam usage, steam traps. Overall heat transfer coefficients in agitated, jacketed vessels. Coil heat transfer coefficients. Heating times for vessels - latent heating and sensible heat.
Topic 6. Design and scheduling of batch distillation - Simple batch distillation, Rayleigh equation, use of relative volatility, batch distillation with rectification. Operation at constant reflux, operation at variable reflux, running costs, Bogart equation distillation cuts from batch distillation. Steam and assisted distillation, principles, consideration of equilibrium, calculation of steam required
Topic 7. Crystallisation - An introduction to crystallisation, supersolubility, nucleation and growth, crystal yield, equipment and processes.
Topic 8. Filter design for batch processes.
Topic 9. Statistical process control in batch processes - Quality control, use of Shewhart and CuSum charts to monitor process performance.
Topic 10. Safety in batch and semi-batch processes - General safety in batch processes, review of Seveso disaster, batch HAZOP, humen error, thermal runaway.
1. Scheduling of batch processes,
2. Mixing and agitation
3. Reactor design,
4. Heat transfer
Entry Requirements (not applicable to Visiting Students)
||Other requirements|| None
Course Delivery Information
|Not being delivered|
On completion of this course, the student will be able to:
- Discuss the advantages and disadvantages of batchwise and continuous processes.
- Apply their knowledge of chemical engineering unit operations to batch processes.
- Schedule batch processes effectively and size batch equipment.
- Discuss the hazards associated with batch production.
|1. Chemical Engineering Vol. 6, Sinnott (Pergamon).|
2. Unit Operations of Chemical Engineering, McCabe, Smith and Harriot.
3. Atherton J., Carpenter K., Process Development: Physiochemical Concepts, Oxford Chemistry Primers, 2005.
4.Process Heat Transfer - Kern.
5. Batch Processes E. Korovessi and Linninger, 2005.
6. Crystallization, Mullin, J.W. 4th ed 2001.
7. Statistical Process Control, G.B. Wetherill and D.W. Brown, Chapman and Hill, 1991.
|Graduate Attributes and Skills
|Course organiser||Dr Jennifer Skilling
Tel: (0131 6)50 4863
|Course secretary||Mrs Shona Barnet
Tel: (0131 6)51 7715