Separation Engineering
Course Code：
Credits：2
Hours：30 （teaching hours: 30）
Preceded courses：Physical Chemistry, Principles of Chemical Engineering, Chemical
Engineering Thermodynamics, Principle of Transport Processes
Major：Chemical Engineering, Pharmaceutical Engineering, Biological Engineering, etc
Course material：‘Chemical Separation Process ’
By Hongfang Chen, Jiaqi Liu，Chemical Industry Press，1995
School：School of Chemistry and Chemical Engineering
1. Course features and objectives：
This course is the required foundation course for students who major in Chemical
Engineering. It is a required course for students who have studied advanced mathematics,
physical
chemistry,
principles
of
chemical
engineering,
chemical
engineering
thermodynamics, principle of transport processes and computer technology knowledge, etc. It
use the phase equilibrium thermodynamics, dynamics, molecules and gathered state of
microscopic mechanism, heat, mass and momentum transfer theory to research sundry
separation and purification technology in the actual production of chemical industry.
Chemical separation process basic task is to:
1. Master all sorts of commonly used the basic theory of the separation process,
operation characteristics;
2. Master various kinds of simple and strict calculation method of separation process
and strengthening improving operations approach;
3. Understand some new separation technique.
The main teaching content of Chemical separation process is sundry separation and
purification technology in the actual production of chemical industry. It investigates, resolves
and deals with engineering practical problems using natural scientific principles; the research
method is mainly theoretical analytic and experimental research under the guide of theory.
This course focuses on understanding of the basic concept, laying the foundation for the
selection, characteristic analysis and calculation of the separation process. It discusses the
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characteristics of various methods of separations from the commonness of separation process.
It emphasizes the point of view of combining engineering and technology, strengthening
training of design and analysis ability; emphasizes combining theory and practice, improving
the ability to analyze and solve problems.
2. Course elements and requirements
Ch1 Introduction
1. Teaching content
(1) The Importance of separation operation in the production of chemical industry.
(2) The classification of the mass transfer separation process
A. The balance separation process
Including distillation, absorption, extraction, drying, etc;
B. The rate separation process
Including ultrafiltration, reverse osmosis, dialysis, etc.
2. Basic requirements
Understand the meaning of the chemical separation process and its role in chemical
production process; general view of mass transfer separation process.
Ch2 Single class balance process
1. Teaching content
(1) Phase equilibrium
Phase equilibrium relationship and Calculation of phase equilibrium constant;
(2) Calculation of bubble point and dew point of many components of things
Calculation of bubble point temperature and pressure and Calculation of dew point
temperature and pressure;
(3) Calculation of flash process
Calculation of isothermal braising and part of condensation process , Calculation
of adiabatic braising process.
2. Basic requirements
Understand phase equilibrium condition, Master the basic concepts of phase
equilibrium constants and separation factor and Calculation of phase equilibrium
constant, Master Calculation of bubble point temperature and pressure and Calculation
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of dew point temperature and pressure, Understand Calculation of isothermal braising
and part of condensation and learn Calculation of adiabatic braising.
Ch3 Many components multilevel separation process analysis and simple calculation
1. Teaching content
(1) Design variables
Unit design variables and the device design variables;
(2) The distillation process of many components
The analysis of distillation process of many components, minimum reflux ratio,
least numbers of theoretical plates and component distribution, actual reflux ratio
and numbers of theoretical plates;
(3) Extractive distillation and azeotropic distillation
Extractive distillation, azeotropic distillation;
(4)Absorption and evaporate out process
Procedure of absorption and evaporate out process, analysis of absorption and
evaporate out process of multicomponent, method of absorption and evaporate out
process of multicomponent
(5) Extraction process
Extraction process and the group methods of reflux extraction calculation
2. Basic requirements
Know about the determination method of the design variables; fully understand the
basic principle and process of distillation of many components, azeotropic
distillation, extractive distillation, absorption and evaporate out process, etc.
Ch4 Strict calculation of the multistage separation of many components
1. Teaching content
(1) The theoretical model of balance level
(2) The method of calculation gradually
(3) The method of three diagonal matrix
The dissociation method of the equation, Thomas＇solutions of the equation of
three diagonal matrix, bubble method, sum rates method and isothermal sum
rates method
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2. Basic requirements
Understand the theoretical model of balance level, the method of calculation
gradually, the characteristics of Thomas＇solutions of the equation of three diagonal
matrix, bubble method of distillation process; learn selectively the sum rates method
of absorption and evaporate out process
Ch5 Processing power and efficiency of Separation equipments
1. Teaching content
(1) Processing power and efficiency of the gas-liquid mass transfer equipments
Influencing factors of processing power of the gas-liquid mass transfer equipments,
the efficiency of the gas-liquid mass transfer equipments and its influencing factors,
the estimation methods of efficiency of the gas-liquid mass transfer equipments;
(2) Processing power and efficiency of the extraction equipments
Processing power of the extraction equipments and tower diameters, efficiency of
the extraction tower and its influencing factors;
(3) Selection of the mass transfer equipments
Selection of the gas-liquid mass transfer equipments and extraction equipments.
2. Basic requirements
Understand influencing factors of processing power of the gas-liquid contact
equipments, the stage efficiency of gas-liquid contact equipments and its influencing
factors, processing power and efficiency of the liquid-liquid contact equipments;
understand and strengthen approach of the separation operation.
Ch6 The energy saving of the separation process
1. Teaching content
(1) The minimum power and thermodynamics efficiency of the separation, minimum
power of isothermal separation, non-isothermal separation and available energy,
net power consumption and thermodynamics efficiency.
(2) Energy saving technology of the rectification
The thermodynamics irreversible analysis of rectification process, pleietrepie
rectification, heat pumps of low temperature rectification and the rectification
using intermediate condenser and intermediate reboiler.
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(3) Selection of the separation sequence
The combining of separation sequence and the separation sequence of complex
column.
2. Basic requirements
Understand the calculation of minimum power of separation, basic ideas of energy
saving and rules of separation sequence of the selection.
Ch7 Selection of Other separation technology and process
1. Teaching content
(1) Membrane separation technology
Membrane for separation and membrane separation equipment, reverse osmosis,
ultrafiltration, electrodialysis, gas membrane separation, Liquid membrane
separation.
(2) Adsorption separation
Adsorption principle and adsorbent, adsorption balance, adsorption rate, the
introduction of adsorption separation technology;
(3) Reaction rectification
The analysis of Reaction rectification process and the mathematical simulation of
Reaction rectification process;
(4) Selection of the separation process
Feasibility, type of the separation process, production scale, reliability of the design
and independent operation of the separation process.
2. Basic requirements
Understand the basic principle and characteristics of the separation process, select
separation technology correctly.
3. Assignment of course periods.
Chapters
Lecture
Experiment
Ch1 Introduction
1
0
Ch2 Single class balance process
8
0
10
0
Ch3 Many components multilevel separation process analysis and
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simple calculation
Ch4 Strict calculation of the multistage separation of many
components
Ch5 Processing power and efficiency of Separation equipments
Ch6 The energy saving of the separation process
Ch7 Selection of Other separation technology and process
3
0
4
0
3
0
2
0
4. Syllabus description
Appropriate amount of homework is to be assigned ever time after lessons, and the
amounts is about 10 math problems. Some thinking questions will be assigned for the
students to understand the teaching content.
5. Bibliography
(1) Xiu Deng, Junsheng Wu. ‘Chemical Separation Engineering’. Science Press, c2000.
(2) Furong Liu, Xinli Jin, Li Wang. ‘Separation Process and System Simulation’. Science
Press, c2001.
(3) Jiaqi Liu. ‘Chemical Separation Engineering’. Chemical Industry Press, c2002.
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