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Reactors I

Code: 106053 ECTS Credits: 6
2024/2025
Degree Type Year
2500897 Chemical Engineering OB 3

Contact

Name:
Julian Carrera Muyo
Email:
julian.carrera@uab.cat

Teaching groups languages

You can view this information at the end of this document.


Prerequisites

In order to take this subject, it is recommended that you should previously have passed the subjects of Mass and Energy balances on Chemical Engineering and Chemical Kinetics.


Objectives and Contextualisation

The objective of the subject of Reactors is that the student would be able to analyze, evaluate, design and operate ideal and homogeneous chemical reactors according to certain requirements, norms or specifications.


Competences

  • Demonstrate knowledge of the different reaction, separation and processing operations for materials, and transport and circulation of fluids involved in the industrial processes of chemical engineering.
  • Develop personal work habits.
  • Develop thinking habits.
  • Understand and apply the basic principles on which chemical engineering is founded, and more precisely: balances of matter, energy and thermodynamic momentum, phase equilibrium and kinetic chemical equilibrium of the physical processes of matter, energy and momentum transfer, and kinetics of chemical reactions

Learning Outcomes

  1. Apply the basic flow principles to chemical reactors.
  2. Apply the basic principles on which chemical reactors are based.
  3. Apply the concepts of homogenous chemical kinetics.
  4. Develop critical thinking and reasoning
  5. Identify, analyse and resolve balances of matter in a stationary or non- stationary state, with or without a chemical reaction, in simple chemical processes.
  6. Monitor the advance of a chemical reaction using the most suitable methodology.
  7. Obtain and apply the design equations for ideal isothermal reactors.
  8. Practice the fundamental laws of thermodynamics in chemical process engineering problems.
  9. Work autonomously.

Content

1. MOLAR BALANCES

1.1 Reaction rate

1.2 General equation of molar balance

1.3 Batch reactors

1.4 Continuous reactors

 

2. ISOTHERMAL REACTORS DESIGN

2.1 Definition of conversion

2.2 Design equations for batch reactors

2.3 Design equations for continuous reactors

2.4 Application of design equations for continuous reactors

2.5 Reactors in series

2.6 Reactions in gas phase

 

3. DESIGN OF NON-ISOTHERMAL REACTORS AT STEADY-STATE CONDITIONS

3.1 Energy balance

3.2 Adiabatic operation

3.3 Plug-flow tubular reactor at steady-state conditions with a heat exchanger

3.4 Equilibrium conversion in adiabatic operation

3.5 Continuous stirred tank reactor with a heat exchanger

 

4. DESIGN OF NON-ISOTHERMAL REACTORS AT NON STEADY-STATE CONDITIONS

4.1 Energy balance at non steady-state conditions

4.2 Energy balance in a batch reactor

 

5. RESIDENCE TIME DISTRIBUCION (RTD) IN CHEMICAL REACTORS

5.1 General characteristics

5.2 Measurement of the RTD

5.3 Characteristics of the RTD

5.4 RTD for Ideal reactors

5.5. Diagnosis and resolution of problems

 

6. CATALYTIC REACTORS

6.1 Design equation of a packed bed catalytic reactor

6.2 Pressure drop in catalytic reactors

6.3 Catalyst deactivation


Activities and Methodology

Title Hours ECTS Learning Outcomes
Type: Directed      
Master classes 30 1.2 1, 2, 3, 5, 6, 7, 8
Problems seminars 15 0.6 1, 2, 3, 4, 5, 6, 7, 8, 9
Type: Supervised      
Tutorials 9 0.36 1, 2, 3, 5, 6, 7, 8
Type: Autonomous      
Autonomous student learning 70 2.8 1, 2, 3, 4, 5, 6, 7, 8, 9
Collaborative learning 20 0.8 1, 2, 3, 4, 5, 6, 7, 8

Autonomous student learning: Consists of the individual work of each student and encompasses: the resolution of problems, the search for information, the reading of books, articles and cases and individual study.

Collaborative learning: It consists of carrying out group work on a part of the subject, at the teacher's suggestion.

Master classes: This consists of the teacher's presentation. Students will be shown the basic concepts and techniques with indications on how to complement and deepen the learning of the subject.

Problems seminars: Students will solve problems related to the contents exposed in the master classes. The aim is to encourage the active participation of students in these activities. 

Tutorials: Meetings of small groups of students with the teacher to clarify doubts, give advice on the writing of reports, follow up group work or deal with any specific issue. 

Annotation: Within the schedule set by the centre or degree programme, 15 minutes of one class will be reserved for students to evaluate their lecturers and their courses or modules through questionnaires.


Assessment

Continous Assessment Activities

Title Weighting Hours ECTS Learning Outcomes
Reactor design task 15% 0 0 1, 2, 3, 4, 5, 6, 7, 8
Reactor design test 25% 2 0.08 1, 2, 3, 4, 5, 6, 7, 8, 9
Synthesis exam 60% 4 0.16 1, 2, 3, 4, 5, 6, 7, 8, 9

Assessment

  • Process and scheduled evaluation activities

The course consists of the following evaluation activities:

Activity A, Reactor design test, 25% on the final grade. This exam will be done in person in November. 

Activity B, Reactor design task, 15% on the final qualification. This work will be carried out in groups and will have to be presented in written form and in English.

Activity C, Synthesis test, 60% of the final grade. This exam will be done in person in January.

Please note that activitiy B is not recoverable.

 

  • Programming assessment activities

The calendar of evaluation activities will be given during the first week of classes and will be made public through the Campus Vitual and the website of the Escola d'Enginyeria.

 

  • Recovery process

 

75% of the final grade can be recovered in a classroom exam with theory and problems. In this make-up test, the student will be tested on all the subject matter of the course.

 

  • Grade reviewprocedure

For each assessment activity, a review date and time will be indicated where the student will be able to review virtually the activity with the teacher. If the student does not show up for this review, this activity will not be reviewed later.

 

  • Special qualifications

Honor's registration. Granting a grade of honor's registration is the decision of the teacher responsible of the subject. The UAB regulation indicates that the MH can only be granted to students who have obtained a final grade equal to or greater than 9.0. The teacher can grant up to 5% of MH of the total number of students enrolled.

 

  • Plagiarism

Total or partial plagiarism of any of the assessment activities will automatically be awarded a “fail” (that is, zero) for the plagiarised item.


Plagiarism is copying from unidentified sources and presenting this as original work (this includes copying phrases or fragments from the internet and adding them without modification to a text which is presented as original).


Plagiarism is a serious academic offence. It is essential to respect the intellectual property of others, to identify any source uses, and to take responsibility for the originality and authenticity of all work produced.

 

  •  Assessment of repeating students

The repeating student will be evaluated with the same procedure as any other student.


Bibliography

 1) H. Scott Fogler. Elements of chemical reaction engineering 4th edition solutions

2) O. Levenspiel. Chemical Reactor Engineering.

 


Software

MS Office

Polymath 6.0


Language list

Name Group Language Semester Turn
(PAUL) Classroom practices 211 Catalan first semester morning-mixed
(PAUL) Classroom practices 212 Catalan first semester morning-mixed
(SEM) Seminars 211 Catalan first semester morning-mixed
(SEM) Seminars 212 Catalan first semester morning-mixed
(TE) Theory 21 Catalan first semester morning-mixed