化工原理课程(全英文)教学课件1

3. Obtain a practical, working knowledge of common unit operations in chemical engineering such as evaporation, absorption/stripping, distillation, liquidliquid extraction, and drying.
5
© 2015 Yanwei Wang
源自文库
Grading
1. Course participation and homework assignments: 30% 2. Mid-term Exam: 30% 3. Final Exam: 40%
Total: 100%
Advice: This is a hard course, so work hard on it.
3 © 2015 Yanwei Wang
About this course

Textbook
McCabe, W. L.; Smith, J. C.; Harriott, P. Unit Operations of Chemical Engineering, 7th Edition, McGraw-Hill, 2005 (英文改编版，伍钦等改编， 化学工业出版社, 2007).
10
© 2015 Yanwei Wang
A qualified chemical engineer
The professional stature of an engineer depends on skill in utilizing all sources of information to reach practical solutions to processing problems.
Fall Semester, 2014
Basic Principles of Chemical
Engineering Processes
Lecture 1
Yanwei Wang (王衍伟) Email: ywwang@suda.edu.cn
© 2015 Yanwei Wang
Who am I ?
Yanwei Wang, Associate Professor
14 © 2015 Yanwei Wang
Unit Operations （4/6)
The unit operation concept is this: By studying systematically these operations themselves --operations that clearly cross industry and processes --- the treatment of all processes is unified and simplified.
11
© 2015 Yanwei Wang
Unit Operations （1/6)
The variety of processes and industries that call for the service of chemical engineers is enormous. Because of the variety and complexity of modern processes, it is not practicable to cover the entire subject matter of chemical engineering under a single head.
12
© 2015 Yanwei Wang
Unit Operations （2/6)
An economical method of organizing much of the subject matter of ChemE is based on two facts: ① Although the number of individual processes is
8
© 2015 Yanwei Wang
Principal factory of the BASF group, Ludwigshafen (路德维希港)
9 © 2015 Yanwei Wang
A qualified chemical engineer
Must develop, design, and engineer both the complete process and the equipment used; choose the proper raw materials; operate the plants efficiently, safely, and economically; and see to it that products meet the requirements set by the customers.
6 © 2015 Yanwei Wang
Outline of this lecture
Pages 1-10 of textbook Introduction to ChemE Introduction to Unit Operations Unit systems: SI units & non-SI units
Research Interests
Polymer Physics, Molecular Modeling, Micro-/nano-fluidic systems
2
© 2015 Yanwei Wang
Who are you ?
Third year undergraduates Courses taken: – Calculus – Physics – Physical chemistry – Chemical Reaction Engineering ? – Thermodynamics ? –…
great, each one can be broken down into a series of steps, called operations; each operations in turn appears in process after process. ② The individual operations have common techniques and are based on the same scientific principles.
Conversion of units
18
© 2015 Yanwei Wang
Physical Quantities
Any physical quantity consists of two parts: a unit and a number.
No physical quantity is defined until both the number and the unit are given.
15
© 2015 Yanwei Wang
Unit Operations （5/6)
Unit operations are largely used to conduct the primarily physical steps of preparing the reactants, separating and purifying the products, recycling unconverted reactants, and controlling the energy transfer into or out of the chemical reactor. The strictly chemical aspects of processing are studied in the subject called “Chemical Reaction Engineering”, which treats reaction kinetics and reactors.
4
© 2015 Yanwei Wang
What you will learn in this course ?
1. Develop an understanding of the processes of momentum transfer (fluid mechanics), heat transfer, and mass transfer. 2. Be aware of the basic equations of fluid flow, heat transfer, and mass transfer and be able to apply these equations to practical unit operations.
17
© 2015 Yanwei Wang
Outline of this lecture
Pages 1-10 of textbook Introduction to ChemE Introduction to Unit Operations Unit systems: SI units & non-SI units
16 © 2015 Yanwei Wang
Unit Operations （6/6)
Because the unit operations are a branch of engineering, they are based on both science and experience. Theory and practice must be combined to yield designs for equipment that can be fabricated, assembled, operated, and maintained.
Conversion of units
7
© 2015 Yanwei Wang
ChemE ?
Turning molecules into products Chemistry from lab to industrial process ChemE is both a science and an art
13
© 2015 Yanwei Wang
Unit Operations （3/6)
ChemE unit operations consist of five classes:
① Fluid flow processes: fluids transportation, filtration, solids fluidization ② Heat transfer processes: evaporation, condensation ③ Mass transfer processes: gas absorption, distillation, extraction, drying ④ Thermodynamic processes: gas liquefaction (液化), refrigeration （冷却） ⑤ Mechanical processes: solids transportation, crushing （破碎） and pulverization （粉碎）
Office: 911-408 Phone: 186-625-15268
Education background
B.Sc., Chemical Engineering, Zhejiang University, 2003 M.Sc., Polymer Engineering, Technical University of Denmark, 2005 Ph.D., Technical University of Denmark (DTU), 2008 Postdoc, DTU, 2008-2010 Postdoc, University of Minnesota-Twin Cities, 2011