Undergraduate Course: Chemical Reaction Engineering 4 (CHEE10008)
|School||School of Engineering
||College||College of Science and Engineering
|Credit level (Normal year taken)||SCQF Level 10 (Year 4 Undergraduate)
||Availability||Available to all students
|Summary||The course will cover 4 topics:
1) Nonideal flow reactors: Define a residence time distribution RTD, E(t) and F(t) curves and the mean residence time. Diagnosis of reactor faults by RTD analysis. Modelling of complex behaviour by networks of ideal units. Effect on RTD of diffusion in packed beds. Predict effluent concentrations for multiple reactions.
2) Catalytic rates, catalytic CSTR and PFR reactors. Steps of catalytic reaction including external and internal mass transfer, adsorption, surface reaction and desorption. Models of heterogeneous catalytic kinetics: Effect of external heat and mass transfer resistances. Intrapellet conduction and diffusion. Thiele modulus and effectiveness factor. Extension to pellets of spherical and other shapes. Experimental evidence of diffusional effects: the Weisz modulus. External heat and mass transfer control: simultaneous heat and mass transport in external films: generalised nonisothermal effectiveness.
3) Further kinetics. Solid-fluid non-catalytic reactions and the shrinking core model and uniform conversion models. Design and operating implications of the basic science covered above.
4) Further reactor design: Design of multiphase catalytic reactors by considering multiphase reactions, catalysts decay, mass transfer and heat transfer. Suitable choices of reactor type and reactor design for exothermic reversible catalytic processes. Optimum temperature profile. Staged adiabatic catalytic reactors with intercoolers. Qualtitative consideration of other reactors. Multiphase reactions, both catalytic and non-catalytic, and the modelling thereof. This will include gas-liquid reactions, fluid-solid non-catalytic reactions and fluid-solid catalytic reactions. Qualitative consideration of 3-phase reactions.
L2-4: Nonideal flow.
L5-10: Catalytic solid-fluid reactions and reactors.
L11-14: External diffusion effects.
L15-18: Reactions in porous catalysts.
L19-20: 3 phase reactions and consolidation.
Information for Visiting Students
|High Demand Course?
Course Delivery Information
|Academic year 2022/23, Available to all students (SV1)
|Learning and Teaching activities (Further Info)
Lecture Hours 20,
Formative Assessment Hours 1,
Summative Assessment Hours 2,
Programme Level Learning and Teaching Hours 2,
Directed Learning and Independent Learning Hours
|Assessment (Further Info)
|Additional Information (Assessment)
||Two hour written examination at the end of semester one.
||Hours & Minutes
|Main Exam Diet S1 (December)||2:00|
|Resit Exam Diet (August)||2:00|
On completion of this course, the student will be able to:
- Describe the mass & heat transfer and reaction phenomena occurring in heterogeneous reactions and model these.
- Make informed choices of reactor types for heterogeneous reactions.
- Write and simplify appropriately the overall rate and balance equations for multiphase reactions.
- Design reactors for heterogeneous reactions and optimise operating conditions.
- Use RTD methods to diagnose nonideal flows in reactors and calculate conversions in nonideal reactors.
|Non-ideal flow in reactors: Metcalfe Ch 6, Levenspiel Ch 11 section 11.1|
to end of example 11.1, example 11.4; Ch 12 Figs 12.1 12.3, 12.4; Fogler Ch 13 and Ch14;
Catalytic reactions: Levenspiel Ch 17, Levenspiel Ch 18 - pp 378-394 particularly important; Ch 19 - pp430-438 particularly important; examples 19.2 and 19.1 are illustrative but both use nice optimisation methods not taught in class. Fogler Ch 10;
Non-catalytic reactions: Levenspiel Ch 25,
Gas-liquid reactions: Levenspiel ch 23, 24
Three phase reactors: Levenspiel Ch22.1
And Fogler Ch 11 and Ch 12;
Students with learning profiles: copies of lecture overheads (the ¿notes¿) are available.
|Graduate Attributes and Skills
|Course organiser||Dr Harvey Huang
Tel: (0131 6)50 7793
|Course secretary||Mrs Shona Barnet
Tel: (0131 6)51 7715