Gonzalo Guillén Gosálbez: Catalogue data in Autumn Semester 2020

Name Prof. Dr. Gonzalo Guillén Gosálbez
FieldChemical Systems Engineering
Address
Chemisches System-Engineering
ETH Zürich, HCI G 135
Vladimir-Prelog-Weg 1-5/10
8093 Zürich
SWITZERLAND
Telephone+41 44 633 40 84
E-mailgonzalo.guillen.gosalbez@chem.ethz.ch
DepartmentChemistry and Applied Biosciences
RelationshipAssociate Professor

NumberTitleECTSHoursLecturers
529-0459-01LCase Studies in Process Design3 credits3AG. Guillén Gosálbez
AbstractThe learning objective is to design, simulate and optimise a real (bio-)chemical process from a process systems perspective. Specifically, a commercial process simulation software will be used for the process simulation and optimisation. Students have to integrate knowledge and develop engineering thinking and skills acquired in the other courses of the curriculum.
ObjectiveSimulate and optimise a chemical production process using a commercial process simulation software.
ContentCreate a model describing the production process
- Students will apply a commercial process simulator systematically for process creation and analysis.
- Students will create a simulation flowsheet for steady-state simulation
- Students will evaluate the sequencing in which process units associated with recycle loops are solved to obtain converged material and energy balances.

Evaluate the performance of the production process
- Students will analyse and understand the degrees of freedom in modelling process units and flowsheets.
- Students will understand the role of process simulators in process creation.
- Students will make design specifications and follow the iterations implemented to satisfy them.
- Students will judge the role of process simulators in equipment sizing and costing and profitability analysis.
- Students will assess the economic performance of the process, including investment and operation costs.
- Students will assess the environmental impact of the production process.

Optimise the design and operating conditions of the production process
- Students will solve sensitivity analyses and optimisations are conducted considering technical and economic criteria.
- Students will generate process integration alternatives to improve the initial production process.
- Students will optimise the production process considering economic and environmental criteria.
Prerequisites / NoticeBefore the case study week, students are encouraged to participate in exercises of the course of Process Simulation and Flowsheeting in order to get familiar with Aspen Plus simulation software (highly recommended).
The problem statement and detailed instructions are provided at the beginning of the case study week.

During the case study week:
- Students work in teams of 3-5 people.
- Students have to pose and solve process equipment and system design related problems.
- Students have to coordinate the activities, the preparation of the written report and the oral presentation.
- Students get support from project assistants, the course supervisor, and industrial expertise.

The groups deliver the written report on a predefined date.
The groups are also asked to critically review a report from another group.

The students receive the comments of their reviewing group and the course supervisors on a predefined date.

Finally, the students participate in a vist to the production site of the process they modelled. There, they present their work to the industrial experts, get valuable feedback and a tour in the industrial facilities.
529-0549-01LCase Studies in Process Design I3 credits3AG. Guillén Gosálbez, J. Dolenc, U. Fischer
AbstractThe focus of part I of the case study course lies on the literature-based comparison of chemical process alternatives. Based on this compilation and selected quantitative as well as qualitative measures a process assessment and comparison is conducted and the most promising process alternative is chosen for further evaluation, and a basic flowsheet and mass and energy balances are generated.
Objective- to obtain knowledge about different databases and sources of information
- application of the knowledge obtained in lectures
- problem-oriented problem solving (application of different methods to the same subject)
- team work
- report writing and presentation techniques
ContentThe focus of part I of the case study course lies on the literature-based comparison of chemical process alternatives. For this purpose relevant substance data (i.e. physico-chemical, toxicological, safety, and environmental data) as well as information about synthesis routes and technical implementations (i.e. on reaction kinetics; possible separation operations; economic, safety, and environmental aspects) are collected from the literature. Based on this compilation and selected quantitative as well as qualitative measures a process assessment and comparison is conducted and the most promising process alternative is chosen for further evaluation. For this alternative a basic flowsheet and mass and energy balances are generated.
529-0613-01LProcess Simulation and Flowsheeting6 credits3GG. Guillén Gosálbez
AbstractThis course encompasses the theoretical principles of chemical process simulation, as well as its practical application in process analysis and optimization. The techniques for simulating stationary and dynamic processes are presented, and illustrated with case studies. Commercial software packages are presented as a key engineering tool for solving process flowsheeting and simulation problems.
ObjectiveThis course aims to develop the competency of chemical engineers in process flowsheeting and simulation. Specifically, students will develop the following skills:
- Deep understanding of chemical engineering fundamentals: the acquisition of new concepts and the application of previous knowledge in the area of chemical process systems and their mechanisms are crucial to intelligently simulate and evaluate processes.
- Modeling of general chemical processes and systems: students have to be able to identify the boundaries of the system to be studied and develop the set of relevant mathematical relations, which describe the process behavior.
- Mathematical reasoning and computational skills: the familiarization with mathematical algorithms and computational tools is essential to be capable of achieving rapid and reliable solutions to simulation and optimization problems. Hence, students will learn the mathematical principles necessary for process simulation and optimization, as well as the structure and application of process simulation software. Thus, they will be able develop criteria to correctly use commercial software packages and critically evaluate their results.
ContentOverview of process simulation and flowsheeting
- Definition and fundamentals
- Fields of application
- Case studies

Process simulation
- Modeling strategies of process systems
- Mass and energy balances and degrees of freedom of process units and process systems

Process flowsheeting
- Flowsheet partitioning and tearing
- Solution methods for process flowsheeting
- Simultaneous methods
- Sequential methods

Process optimization and analysis
- Classification of optimization problems
- Linear programming
- Non-linear programming
- Optimization methods in process flowsheeting

Commercial software for simulation: Aspen Plus
- Thermodynamic property methods
- Reaction and reactors
- Separation / columns
- Convergence, optimisation & debugging
LiteratureAn exemplary literature list is provided below:
- Biegler, L.T., Grossmann I.E., Westerberg A.W., 1997, systematic methods of chemical process design. Prentice Hall, Upper Saddle River, US.
- Boyadjiev, C., 2010, Theoretical chemical engineering: modeling and simulation. Springer Verlag, Berlin, Germany.
- Ingham, J., Dunn, I.J., Heinzle, E., Prenosil, J.E., Snape, J.B., 2007, Chemical engineering dynamics: an introduction to modelling and computer simulation. John Wiley & Sons, United States.
- Reklaitis, G.V., 1983, Introduction to material and energy balances. John Wiley & Sons, United States.
Prerequisites / NoticeA basic understanding of material and energy balances, thermodynamic property methods and typical unit operations (e.g., reactors, flash separations, distillation/absorption columns etc.) is required.
529-0643-01LProcess Design and Development Information 6 credits3GG. Guillén Gosálbez
AbstractThe course is focused on the design of Chemical Processes, with emphasis on the preliminary stage of the design approach, where process creation and quick selection among many alternatives are important. The main concepts behind more detailed process design and process simulation are also examined in the last part of the course.
ObjectiveThe course is focused on the design of Chemical Processes, with emphasis on the preliminary stage of the design approach, where process creation and quick selection among many alternatives are important. The main concepts behind more detailed process design and process simulation are also examined in the last part of the course.
ContentProcess creation: decomposition strategies (reduction of differences - vinyl chloride production and hierarchical decomposition - ethanol production). Identification of the "base case design". Heuristics for process synthesis.
Preliminary process evaluation: simplified material and energy balances (linear balances), degrees of freedom, short-cut models, flowsheet solution algorithm).
Process Integration: sequencing of distillation columns, synthesis of heat exchanger networks.
Process economic evaluation: equipment sizing and costing, time value of money, cash flow calculations.
Batch Processes: scheduling, sizing and inventories.
Detailed Process Design: unit operation models, flash solution algorithms (different iterative methods, inside-out method), sequencing of nonideal distillation columns, networks of chemical reactors.
Lecture notesno script
LiteratureL.T.Biegler et al., Systematic Methods of Chemical Process Design, Prentice Hall, 1997.
W.D.Seider et al., Process Design Principles, J. Wiley & Sons, 1998.
J.M.Douglas, Conceptual Design of Chemical Processes, McGraw-Hill, 1988.
Prerequisites / NoticePrerequisite: Thermal Unit Operations