Code: | EBE0130 | Acronym: | PSEP |
Keywords | |
---|---|
Classification | Keyword |
OFICIAL | Bioprocess Engineering |
OFICIAL | Biological Engineering |
Active? | Yes |
Responsible unit: | Department of Chemical Engineering |
Course/CS Responsible: | Master in Bioengineering |
Acronym | No. of Students | Study Plan | Curricular Years | Credits UCN | Credits ECTS | Contact hours | Total Time |
---|---|---|---|---|---|---|---|
MIB | 24 | Syllabus | 3 | - | 6 | 56 | 162 |
The aim of this course unit is to illustrate the importance of separation and purification processes in the technical and economical feasibility of chemical, food, biological, and similar industrial processes, giving the students the necessary background for the selection, analysis and design of some of the most common separation processes that can be found in these industries.
The students are expected to attain the following skills:
- Identification of the basic principles governing the different classes of separation processes;
- Selection of the process(es) more adequate to accomplish a desired separation/purification;
- Simplified design of the separation equipment studied, and understanding of the influence of the different operating conditions in the separation.
Knowledge of solution thermodynamics and mass and energy balances.
INTRODUCTION: Characterization and classification of separation processes. Notion of separating agent, recovery and purity. General criteria for the selection of separation processes.
DISTILLATION: The importance of distillation in the chemical, biological and food industry. Design of flash units. Description of the vapour-liquid equilibrium. Binary distillation: application of the McCabe-Thiele method to conventional distillation columns and to columns with multiple feed streams and side products. Multicomponent distillation: the approximate method of Gilliland - Fenske – Underwood, and the specification of the feed tray by the method of Kirkbride. Overall efficiency. Conditions under which distillation should be considered to perform a specific separation/purification.
GAS ABSORPTION: Solubility of gases in liquids. Design of absorption columns for dilute solutions: Kremser equation, and design of tray and pack columns (definition of height and number of mass transfer units). Conditions under which absorption should be considered to perform a specific separation/purification.
EVAPORATION: Types of industrial evaporators and their applications. Economy and capacity of a system of evaporators. Calculation of the temperature of liquid solutions. Notion of boiling point rise (BPR). Analysis of a single effect evaporator. Design of multiple-effect evaporators operating in counter and co-current. Conditions under which evaporation should be considered to perform a specific separation/purification.
DRYING AND HUMIDIFICATION: Types of industrial dryers and their applications. Definition of absolute humidity, relative humidity, adiabatic saturation temperature, and wet bulb temperature. Use of the psychrometric diagram. Drying velocity laws. Design of dryers. Brief introduction to the liofilization process. Conditions under which drying or liofilization should be considered to perform a specific separation/purification.
CRYSTALLIZATION: Introduction, advantages and disadvantages of crystallization, examples of industrial application and main types of crystallizers. Material balance to a crystallizer and solubility calculations. Stages of the crystallization process and determination of crystal size distribution (CSD). Analysis and design of the perfectly stirred crystallizer (MSMPR). Conditions under which crystallization should be considered to perform a specific separation/purification.
SOLVENT EXTRACTION: The importance of solvent extraction. Liquid-Liquid and solid-liquid extraction processes. Description of the liquid-liquid and solid-liquid equilibrium. Extraction in a single equilibrium stage and in units with several equilibrium stages operating in cross and counter-current flow. Analysis of the influence of the different operating variables on the separation, using algebraic and graphic methods. Brief introduction to supercritical extraction, extraction in two aqueous phase systems, and the use of ionic liquids as solvents. Conditions under which solvent extraction should be considered to perform a specific separation/purification.
Oral presentation of the theoretical concepts and analysis of problems exemplifying their application.
Designation | Weight (%) |
---|---|
Exame | 33,30 |
Teste | 66,70 |
Total: | 100,00 |
Designation | Time (hours) |
---|---|
Estudo autónomo | 106,00 |
Frequência das aulas | 56,00 |
Total: | 162,00 |
According to FEUP's regulations.
Three mid-term exams of 90 minutes.
Not applicable.
By exam.
By final exam.
Due to the UP contingency plan for Covid-19, the evaluation method for this course unit was changed, continuing to be distributed evaluation plus final exam. So it becomes:
Distributed evaluation: 6 homework assignments, each with a weight of 5% in the final classification.
Exam: Exam in the classroom with a duration of 90 minutes, which will have a weight of 70% in the final classification. For the student to pass this curricular unit, he / she must have a minimum score of 8.0 in this exam.
Formula for calculating the final grade:
Final grade = 0.3 * (average grade obtained in homeworks) + 0.7 * (grade in the classroom exam, which must be greater than or equal to 8.0 points).