Separation Processes II

Code:

EQ402

Acronym:

PSII

Instance: 2004/2005 - 1S

Active?	Yes
Responsible unit:	Department of Chemical Engineering
Course/CS Responsible:	Chemical Engineering

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
LEQ	80	Plano Oficial EQ a partir 2003	4	3,5	6,5	-
		Plano para Bachareis EQ a partir de 1996	1	3,5	6,5	-

Teaching language

Portuguese

Objectives

Study of multicomponent distillation processes by approximate and rigorous methods. Analysis of extractive and azeotropic distillation processes. Introduction to the concept of efficiency in stage operations. Presentation of some notions on conservation of energy in distillation processes. Analysis of different modes of operation of batch distillation processes. Design of single and multiple-effect evaporators.

Program

I – Multicomponent distillation. Approximate design by the Fenske-Underwood-Gilliland method. Algorithms for rigorous design of multicomponent distillation columns (Wang-Henke algorithm). Extractive and azeotropic distillation.
II – Concept of efficiency in stage operations. Concept of overall efficiency, stage efficiency and point efficiency. Murphree and Hausen stage efficiencies. Relationships between stage and point efficiencies.
III – Conservation of energy in distillation processes. Methods that modify the distillation operation and methods that do not change the distillation process. Multi-effect distillation. Energetic integration of distillation columns in chemical processes.
IV – Batch distillation. Rayleigh distillation. Use of rectifying columns. Operation at constant, variable, and total reflux.
V – Evaporation. Single and multiple-effect evaporators. Notion of capacity and economy. Use of the Newton-Raphson method to solve evaporation problems. Evaporation equipment.

Mandatory literature

Henley, Ernest J.; Equilibrium-stage separation operations in chemical engineering. ISBN: 0-471-37108-4
Seader, J. D.; Separation process principles. ISBN: 0-471-58626-9
Foust, Alan S. 070; Principles of Unit Operations

Complementary Bibliography

Phillip Wankat; Equilibrium Staged Separations
J. Coulson e J. Richardson; Tecnologia Química

Teaching methods and learning activities

Lectures for exposition of the contents of the course, giving practical examples and using multimedia means to elucidate some particular aspects of the subjects being taught.
Problem solving sessions, and office hours, to discuss and solve problems that elucidate the practical application of the concepts taught in this course.

Evaluation Type

Evaluation with final exam

Calculation formula of final grade

Final Exam. grade

Special assessment (TE, DA, ...)

By exam.

Classification improvement

By exam.

Observations

Relevant background needed:

- Phase equilibria concepts, particularly, vapor-liquid equilibrium;

- Use of composition-composition binary phase diagram in distillation calculations (the McCabe-Thiele method).