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Chemical Processes

Code 8637
Year 2
Semester S2
ECTS Credits 6
Workload TP(60H)
Scientific area Industrial Chemistry
Entry requirements -
Mode of delivery Face-to-face with recourse to e-learning.
Work placements Not applicable
Learning outcomes Construct a diagram of general flow from the description of the industrial chemical process and vice versa.
Establish mass and energy balances in processes with and without chemical reaction. Solve combined mass and energy balances in transient regime.
Syllabus MATERIAL BALANCE
1.Units Systems
2.Law of Conservation of Mass. Basis of calculation;Blocks diagrams;Composition;Flow rate;Density;Pressure
3.Processes involving gases.Ideal and real gase.
4.Processes with chemical reaction.Limiting and excess reagent;Conversion and Excess percentages;Selectivity and yield;Global balance;Atoms balance
5.Processes involving recycling and purge.Recycling fraction and recycling ratio;Purge fraction
6.Processes involving vapors.Partial pressure and Vapor Pressure;Clausius-Clapeyron equation
7.Processes involving vapor-liquid equilibrium.Steaming with superheated steam
ENERGY BALANCE
8.Principle of Energy Conservation.Entalpy;Reference State;Processes involving changes in temperature;Heat capacity of solids, liquids and gases at constant pressure;Kopp and Wenner Rule
9.Processes involving phase transition.Heat of phase transition;Watson Rule;Trouton Rule.
Main Bibliography - Lopes, A. M. C.; Nunes, M. J. "Apontamentos para a cadeira de Processos Químicos", UBI, Covilhã, 2002.
- Hougen, O. A.; Watson, K. M.; Ragatz, R. A. "Princípios dos Processos Químicos", Ed. Lopes da Silva, 1972.
- Himmelblau, D. M. "Basic Principles and Calculations in Chemical Engineering", 6th Ed., Prentice-Hall, New Jersey, 1996.
- "Perry’s Chemical Engineer’s Handbook", 7th Ed., Perry, R.H., Green, D.W.; Maloney, J.O. (Eds) McGraw-Hill, New York, 1999.
Teaching Methodologies and Assessment Criteria The teaching-learning activities consist of theoretical and, essentially, theoretical-practical classes.
Theoretical classes are, for the most part, interactive, with the exposition of the material done in order to encourage
the participation of students in the course of the class. In theoretical-practical classes, the problems of application of
matter are solved by the students, checking the intervention of the teacher with some explanation
theoretical only when one observes the generalized difficulty in solving the questions raised.

Class operating rules
Entry into the classroom (presencial or online), after a maximum tolerance time of 10 min, will result in absence, although the student may attend the class.
• Presencial classes: the use of mobile phones, tablets, computers and the like is prohibited. Its improper use will imply lack in the respective class.
• Online classes: The student must have the camera on. Before class, the student must have all the necessary material
Language Portuguese. Tutorial support is available in English.
Last updated on: 2021-05-29

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