Ch En 386
Winter 2016
Homework #8
due at 9 a.m. on Monday, January 25
Note: Anytime you solve a problem with Polymath or MathCad, you must print a copy
of the report (Polymath) or the page with equations (MatchCad).
HW #8: Batch reactors
1. (2 points) Con
Ch En 386
Winter 2016
Homework #4
due at 9 a.m. on Wednesday, January 13
HW #4: Rate laws as a function of conversion constant V or v
1. (1 point) Conditioning, magnitude, and reasonableness problems
a. For the reaction 2A + B C in a flow reactor, what is
Key HW #3
1. (1 point) Conditioning, magnitude, and reasonableness problems
a. For reactions, how are the forward and reverse rate constants related to the
equilibrium constant?
b. For gas phase reactions, a typical E value is on the order of _ kJ
Ch En 386
Winter 2016
Homework #7
due at 9 a.m. on Friday, January 22
HW #7: Reactor in series and sizing
1. (2 points) Conditioning, magnitude, and reasonableness problems
a. Run the Staging ICM- do this problem by yourself. Obtain the program
from http:
Ch En 386
Winter 2016
Homework #5
due at 9 a.m. on Friday, January 15
HW #5: Rate laws as a function of conversion variable V or v
1. (2 points) Conditioning, magnitude, and reasonableness problems
a. For any reactor, is CA= CA0* (1-XA) under all circumst
Ch En 386
Winter 2016
Homework #10
due at 9 a.m. on Friday, January 29
Note: Anytime you solve a problem with Polymath or MathCad, you must print a copy
of the report (Polymath) or the page with equations (MatchCad).
HW #10: PFR
1. (2 points) Conditioning
Ch En 386
Winter 2016
Homework #9
due at 9 a.m. on Wednesday, January 27
Note: Anytime you solve a problem with Polymath or MathCad, you must print a copy
of the report (Polymath) or the page with equations (MatchCad).
HW #9: CSTR
1. (2 points) Conditioni
Ch En 386
Winter 2016
Homework #1
due at 9 a.m. on Wednesday, January 6
HW #1: Introduction
1. (1 point) Conditioning, magnitude, and reasonableness problems
a.
What is the difference between kinetics and thermodynamics?
2. (4 points) Fogler P1-3 a-d. (No
Ch En 386
Winter 2016
Homework #2
due at 9 a.m. on Friday, January 8
HW #2: Building Blocks: Batch, CSTR, and PFR mole balances
1. (1 point) Conditioning, magnitude, and reasonableness problems
a. T or F: For a given species, the net generation term can b
Key HW #6
1. (2 points) Conditioning, magnitude, and reasonableness problems
a.
b.
Is the area under a -1/rA vs XA curve associated with sizing a CSTR or a PFR? Explain.
You probably noticed that most examples in Chapter 2 show 1/-rA increasing as a
funct
Introduction to Chemical Engineering Tools for Today
and Tomorrow
Chapter 2
Chemical Processing
Exercise:
-Form teams of 3 or 4.
-Identify as many objects or
materials as you can in the
classroom that are NOT a
result of chemical processing?
Where are mos
Chemical Engineering 170
Exam #1
Fall 2011
K. A. Solen
Instructions:
1. Please write your name here_Answer Key_
2. There are 3 problems; make sure you have all of them.
3. You may work on the exam itself and also attach any additional pages you need. I ha
Here we go again!
Chemical Engineering 170
Exam #2
Open Book, Open Notes
Fall 2011
K. A. Solen
Instructions:
1. Please write your name here_Answer Key_
2. There are 3 problems; make sure you have all of them.
3. You may work on the exam itself and also at
Introduction to Chemical Engineering:
Tools for Today and Tomorrow
Chapter 7, Section 7.4
The Mechanical Energy
Equation
The Mechanical Energy Equation
P2-P1
1 (v22 - v12 ) + g(z2 z1 ) = ws + 2
wf
increase in fluid mechanical energy
(pressure + kinetic en
Introduction to Chemical Engineering:
Tools for Today and Tomorrow
Chapter 10, Section 10.2
Energy Balances
Review:
Last Time We Used the First Law of Thermodynamics
to Derive a General Energy Balance
.
.
.
m(+ v2+gz) - m(+ v2+gz) = Q +
out
in
Ws
Heat Co
Introduction to Chemical Engineering:
Tools for Today and Tomorrow
Chapter 10, Section 10.1
Energy Balances
The Acid-Neutralization Problem
Will the neutralized acid be too warm to put in the lake?
Example, the Utah requirement is 10C above lake temperatu
Introduction to Chemical Engineering:
Tools for Today and Tomorrow
Chapter 9, Section 9.2
Chemical Reaction
Engineering
Describing Reaction Rates
Review: rate expressions for liquids are typically like
rreaction,A =
krcAncBm
1. What are the units of rreac
Introduction to Chemical Engineering:
Tools for Today and Tomorrow
Chapter 9, Section 9.1
Chemical Reaction
Engineering
Even when reacting molecules are in contact,
HOW LONG WILL IT TAKE
for them to react?
The subject of reaction rates is called
Reaction
ChEn 170
NOTE: Our next class will begin
with a closed-book quiz on the
definitions of the symbols
appearing in Equations 4.5 and 4.6.
Introduction to Chemical Engineering Tools for Today
and Tomorrow
Chapter 3
Chemical Engineers
Solve Problems
Steps to S
Introduction to Chemical Engineering:
Tools for Today and Tomorrow
Chapter 8
Mass Transfer
Mass Transfer always has
1. Mechanism for
transfer
2. Driving force for
transfer
3. Resistance to transfer
Mass Transfer in Stagnant Media
MOLECULAR DIFFUSION
Molec
Introduction to Chemical Engineering Tools for Today and Tomorrow
Chapter 4
Units and Symbols
Units
Keeping track of units is a vital and powerful tool. Often, units must
be converted from one set to another (e.g. miles to feet, calories to
Btu, etc.).
We
Introduction to Chemical Engineering Tools for Today
and Tomorrow
Chapter 5, Section 5.2
Balances for Multiple Species
benzene, toluene
separator
benzene
toluene
How many species are present?
How many streams are present?
Are there formation and/or consum
Introduction to Chemical Engineering:
Tools for Today and Tomorrow
Chapter 7, Sections 7.1-7.3
Fluids: Some Concepts
Pressure
Velocity
Energy
Pressure
Definiti Force per area
on:
Example: Liquid in a tank
F
Force against
a solid
boundary
A
F
A
Force again