ChBE3610
Au 2017
ChBE 3610 SAMPLE PROBLEMS 3-6
Ex. 3 Consider the following scene that takes place at a chemical plant.
HOLMES: You say he was last seen tending this tank
SIR BOSS: You mean overflow stirred tank reactor, Mr. Holmes.
HOLMES: You must excus
ChBE 3610
Au 2017
Example Problems 1 and 2
1. A stream containing 20.0 mol/s reactant A enters a continuous flow liquid-phase reactor at a
total volume flow rate of 3.00 dm3/s. A decomposition reaction occurs in the reactor; the rate
law for this reaction
ChBE3610
Au 2017
4. The gas phase reaction A + 2B C takes place in a batch reactor fitted with a piston such
that the pressure inside the reactor remains constant throughout the reaction. The reaction is
first order in A and zero order in B. The reaction
Get rid of m,dot2
And assume m,dot1 = 1kg/s basis
Should have H,hat
instead of H,underline
and m,dot,1
mdot,1*Cp*DT
=mdot,1*g*Dh
where mdot,1 = 1kg/s
Note: In this part we
are picking up from
Part(a). So the
answers to Part(a) are
the initial conditions
t
CBE 3508 Chemical Engineering Thermodynamics
Solutions to Homework #1
Sandler 1.1
(a) Thermostatic bath imposes its temperature T on the system. The system can be
considered isothermal (not adiabatic).
System
Thermostatic bath at T
(b) Container imposes c
For project: Internal advisors will be posted on Carmen
First task is to talk to the external advisor & figure out what their expectations are
Then talk to internal advisor to make sure everyone is on the same page
Project statement is due in like a week
Footprint Assessment
Footprint is a measure of the direct and indirect impact of human activities
Often identical to life cycle flow of selected emission or resource
Usually a univariate (single variable) and aggregated quantity
Examples: carbon, water, n
Hollings Adaptive Cycle: the infinity diagram
What comes first? There are nutrients in the soil, so plants can grow. The ones that
can utilize the resource most efficiently & grow most rapidly (to out compete the
other plants) will thrive.
What is analogo
Solutions for sustainability
Designing sustainable systems
Sustainability assessment methods are being used to guide engineering decisions
-product design
-process design
-supply chain management
-corporate strategy
These approaches go beyond traditional
Energy Analysis
Looking at EROI of selected fuels:
Coal hasnt changed much because its still fairly easy to obtain
Shale oil: oil sands (tar sands) in Canada
Shale gas: extracted by fracking
Energy analysis is accounting for nonrenewable sources of energy
April 10 (Monday)
Test 2 is next week
The median tends to be a B in this class
Roughly One standard dev above is A, one standard dev below is C
Do presentations during last lecture is an option
Final report is due the same day (if needed this can be moved
(OpenLCA) dont put openLCA homework off until the last minute! tutorial and
download instructions for openlca will be posted
Send proposal to advisor
Exam:
Closed book, closed notes
Equations provided (simple equations you should have memorized, ideal gas
Cumulative Exergy Consumption (ch 13)
The fact that money doesnt account for all the things on the left side of figure 13.5 is
problematic
So we will evaluate things using exergy
Emergy analysis
Emergy or embodied energy is available energy consumed direc
ChBE 2200
Chemical Engineering Process
Calculations
Instructor: Prof. Jessica Winter
Class Hours: M T W Th 10:20-11:15
Location: CBEC 110/120
Textbook: Elementary Principles of Chemical Processes, 4th
Ed., Felder, Rousseau, and Bullard
Lecture # 1 Goals
C
Fisher College of Business
Bus Adm 1100H
Autumn Semester 2015
Instructor:
Kim Bader
Assistant Director for Honors
Christopher John (CJ)
Office Phone:
E-Mail:
E-Mail:
@fisherpeers
Walk-in Hrs:
Office:
120W Schoenbaum Hall
Class
Times &
Locations
Lecture:
R
ChBE 3610 Chemical Engineering Kinetics & Reactor Design Homework #10
1. PFR with heat exchange concurrent or countercurrent?
Consider the PFR described in lecture slides.
k
A
B
8000 K
1
k = ( 4.559 108 ) exp
[ = ] min
T
H R = 300 kJ/mol
Suppose a sh
Due Friday January 29th
ChBE 3610 Chemical Engineering Kinetics & Reactor Design Homework #3
1. Rawlings & Ekerdt Problem 3.1
2. Rawlings & Ekerdt Problem 3.4 (See Section 3.5 on multiple reactions) will not ask
questions with multiple reactions on the ex
ChBE 3610 Chemical Engineering Kinetics & Reactor Design Homework #9
1. Rawlings & Ekerdt 6.4
2. Rawlings & Ekerdt 6.5
3. Rawlings & Ekerdt 6.6 for this problem first derive an expression that can be used to obtain
a van Heerden diagram (similar to Eqn. 6
Due Monday February 22nd
ChBE 3610 Chemical Engineering Kinetics & Reactor Design Homework #6
We will work on setting up these problems in class on Wed and Thurs this week and I
will post the solutions (expect for the Group HW problem #3) on Thursday. The
ChBE 3610 Chemical Engineering Kinetics & Reactor Design Homework #8
Enzyme Reactions
The following model is proposed for uncompetitive inhibition:
k1
!
E + S
!
! ES
k -1
k2
ES P + E
k3
!
ES + I
!
! I-ES
k
-3
In this model the inhibitor binds to the ES
Due Monday February 8th
ChBE 3610 Chemical Engineering Kinetics & Reactor Design Homework #3
1. Rawlings & Ekerdt Problem 4.1
2. Rawlings & Ekerdt Problem 4.2 You will need to assume ideal gas for this problem is this
assumption justified?
There is no gro
Due Monday February 8th
ChBE 3610 Chemical Engineering Kinetics & Reactor Design Homework #5
1. Rawlings & Ekerdt Problem 4.4 (CAo not given so plot CA/CAo for part (b). Note you should
not need Matlab to sketch these figures.
2. The reaction A + B C occu
Problem 1: CSTR Startup, part (B)
cA
cB
cC
0.8
0.6
0.4
0.2
0
0
50
100
150
200
Problem 1: CSTR Startup, part (C)
1
concentration (M)
concentration (M)
1
0.8
0.6
0.4
0.2
0
250
cA
cB
cC
0
10
t (min)
0.6
0.4
0.2
0
50
100
150
t (min)
40
50
200
250
Problem 1: C