Mass Transfer Processes
FSI-KDPAcad. year: 2020/2021
Mass transfer processes are used in the petroleum, chemical, petrochemical, pulp, pharmaceutical, mineral and other industries. Major portions of investment and operating expenses are associated with one or more separation processes, which are based on mass transfer. This course begins with the coverage of principles that intersect most separation processes: phase equilibrium, diffusion of mass and phase segregation. Next the course contains description of specific mass transfer processes: distillation, absorption, extraction. Attention is given to the drying, crystallization and some membrane processes. Last part of the course is oriented to the design of equipment parameters of these processes.
Learning outcomes of the course unit
In this course the student will be made familiar with the theory of mass transfer and its applications in the design of chemical units. Course is supported with seminars, where many of practical examples are solved.
Basic knowleges of chemistry, physics, physical chemistry and mathematics.
Recommended optional programme components
Recommended or required reading
Perry, Robert H., 1924-1978. Perry’s chemical engineers’ handbook /2008 (EN)
Vermouzek Č.: Difúzní pochody, , 0
McCabe, Warren L.Unit operations of chemical engineering./2001 (EN)
Novák Josef a kol.: Fyzikální chemie I,VŠCHT Praha (1. vydání, 1999) (CS)
Poživil Jaroslav, Vaněk Tomáš, Bernauer Bohumil: Procesní a systémové inženýrství,VŠCHT Praha, 1997 (CS)
Planned learning activities and teaching methods
The course is taught through lectures explaining the basic principles and theory of the discipline. Exercises are focused on practical topics presented in lectures.
Assesment methods and criteria linked to learning outcomes
The exam has a written and oral part. Active participation in calculation seminars is evaluated by the exam.
Language of instruction
Mass transfer process - unit operations
Basics of mass transfer - Fick law,for ekvimolar diffusion
Phase equilibria - basic design methodes
Mass balance of units for mass transfer
Simple distillation, materials and heat balance of column
Determination of a theoretic number of stages by MacCabe- Thiele¨method
Absorption in liquid, basic concepts and balance, phase equilibria
Extraction, basic concepts, phasic equilibria
Drying, theoretic and real dryers and its material balances
Crystallization, materials and heat balance of unit
Adsorption, balance of one - stage and multi - stage unites
Membrean processes, division and standard types of unites
The course objective is to make students familiar with the basics of mass-transfer processes.
This is the most important part of chemical engineering.
Specification of controlled education, way of implementation and compensation for absences
The attendance at lectures is recommended.
The attendance at exercises is compulsory and checked.
Students have access to support texts in czech language in electronic form.
In case of absence, a written record from the missed saminar is necessary to submit to the lecturer.
Type of course unit
26 hours, optionally
Teacher / Lecturer
1. Type of mass transfers processes.
2. Introduction to mass transfers
3. Material and heat balances of mass transfer processes
4. Essentials of phase equilibrium calculations .
5. Material and heat balances of two-component distallation
6. Methods of determining the number of ideal stages by two-component
7. Multi-component distillation, basic calculations
8. Methods for determining the number of ideal stages by multi-component distallation
9. Batch and discontinued distillation
10. Liquid-liquid extraction
11. Absorption and desorption. Methods of determining the number of ideal stages by absorption.
12. Drying. Material and heat balances of theoretical dryer.
13. Crystallization. Kinetics of crystallization
14. Adsorption, basic calculations.
26 hours, compulsory
Teacher / Lecturer
All topics will be supported by practical examples with application possibility. Semestr project will be concerned with mass ballances of mass-transfer unit operations.
eLearning: currently opened course