ChE 201

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ChE 201    Chemical Engineering Calculations I  
  Fall 2005/2006
Course Description System of units and
dimensions. Stoichiometry. Ideal and non-ideal
gases, critical properties and compressibility
charts.Vapor-Liquid equilibria. Material balance
calculations for steady and unsteady state
processes with and without chemical reaction.
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My name is Dr. Faisal Iskanderani
Instructor Dr. Faisal Iskanderani Tutorial
assistance Engr Sayed Hammoda Office Main
Library, Deans Office Office Hours Sat
900-10.30 Mon 1200-130

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ChE 201    Chemical Engineering Calculations I  
  Fall 2005/2006
Course Description. Recycle, by-pass and purge
calculations. Process flow sheeting with computer
applications Text Book David Himmelblau, Basic
Principles and Calculations in Chemical
Engineering, Prentice Hall PTR, 7th Edition 2003.
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Reference  Fedler, Elementary Principles of
Chemical Processes, John Wiley, 1998

• Course Goals The overall goal of this course is
  to introduce students to the
• fundamentals of chemical engineering, material
  balance
• Specific instructional goals
• Demonstrate the ability to apply knowledge of
  mathematics and freshman chemistry to solve
  material balance problems.

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Reference  Fedler, Elementary Principles of
Chemical Processes, John Wiley, 1998

• Specific instructional goals
• Function on teams to solve problems.
• Use computers to solve material balance
  problems.

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• Topics
• Introduction (3 weeks)
• Units Dimensions
• Dimensional consistency
• The mole unit
• Density, Specific gravity, sp. Volume, mole
  fraction, mass fraction, Volume fraction
• Analyses of mixtures mole , mass , volume ,
• Concentrations of solutions, mass/unit volume,
  PPM, molar, molal , etc

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• Topics
• How do we take a basis?
• Temperature, and Pressure
• Stoichiometry
• Problem Solving Techniques (1.5 week)
• Material Balance (6 weeks)
• General material balance equation
• How to analyse MB Problems
• MB for non- reaction problems
• Reaction Problems
• Multiple subsystems

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• Topics
• Recycle, Bypass and Purge
• Material Balance (MB) for Gases, Vapors, and
  Solids (4.5 weeks)
• Ideal gas law for a single gas
• Ideal gas law for gas mixtures
• Material Balance for gases
• Real gas Relationships
• Vapor pressure and liquids
• Saturation
• Equilibria

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• Topics
• Equilibria
• Partial saturation
• MB  involving Condensation and Vaporization

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• Computer Usage
• some  homework assignment
• using accompanying CD
• using Excel Sheet

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HOMEWORK For every homework problem assigned
unless other instructions are given- the
following format is to be used

• Write down the problem statement
• State the objective of the problem
• Define the problem. Sketch, label, and state
  precisely what you want to find out.
• Briefly write down how you want to solve the
  problem (the method).
• Carry out the solution.
• Review the results . Do you have any comments on
  the answers or on the problem? State them.

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• Attendance
• 25 absence will result into a DN grade. 25 of
  (2 lectures 1 tutorial) x 15 11
• Maximum lateness allowed is 5 minutes. If you
  come more than 5 minutes late, you will be
  allowed to attend class, but you will be
  considered late. Each 2 late attendances will be
  considered as 1 absence.

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Course Conduct Codes In all aspects of the
course honesty and trust are a must. Any
violations will be severely confronted.
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• You will be working in class as follows
• individually
• As a team
• For homework, quizzes and exams you must work
  individually
• LET US NOW CONSTRUCT THE TEAMS
• EACH ONE MUST DO HIS DUTY

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INTRODUCTION Individually Take 5 minutes and
write down What do you know about Chemical
Engineering, what processes does chemical
engineering involve?
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INTRODUCTION As a team Take 5 minutes and write
down What do you know about Chemical
Engineering, what processes does chemical
engineering involve?
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• INTRODUCTION
• Processes involved in ChE
• mixing
• separation
• - distillation absorption freezing extraction
  (heat mass and momentum transfer)
• chemical reactions

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• What is the difference between a chemical
  engineer and a chemist?

• Chemist
• works in test tubes
• small quantities
• batch constant-T experiments
• small containers
• a catalyst is added and reactions proceed
  with time

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• A CHEMICAL Engineer
• works with large quantities
• large equipment
• continuous mode
• feed streams and product streams are
  continuously fed and withdrawn from the process
• steady state operations (all parameters such as
  T, P, liquid livel, flow rates, compositions,
  etc. are all constant with time

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• CHEMICAL Engineer
• scaling up
• works closely with mechanical, electrical,
  civil, and metallurgical engineers in order to
  design and operate the physical equipment in a
  plant ( such as ? )

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• What are the typical activities a chemical
  engineer works with?

1. DEVELOPMENT to commercialize (scale up) a
chemical process Lab size process ? pilot
plant ? plant
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• 2.DESIGN A team of engineers design the
  commercial plant, based on experience and data
  obtained from the Lab size process and the pilot
  plant. The Chem E specifies
• Process flow rates and conditions
• Equipment types and sizes
• Materials of constructions
• Process configuration
• Control systems
• Safety systems
• Other

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3.CONSTRUCTION Assembling of all components
into a complete plant

• 4.MANUFACTURING running the plant or operations
  and production. Things that are important and
  relevant
• efficiency
• safety
• design modifications
• reduce costs
• improve product quality
• reduce pollution

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5. TECHNICAL SALES
6. RESEARCH
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Homework due next Saturday13/8/1426 (17/9/2005)

• Read Chapter 1
• Solve Problems 1, 5, 9, 14, 18, 23, 28, 33, 38,
  43, 48, 52, 55