ChE 372 Exam 1 Wed., 11 October 2006
Instructions / : I?
0 Write your name at the top of each answer sheet 1 2 Z o
0 Start each problem at the top of a new page , PL
0 Write on only one side of each sheet of paper 3
o The exam consists of ﬁve equally-wei
Homework #1 (8 Problems):
Assigned: Thursday, August 27
Due: Tuesday, September 1 at 9:30 AM
Reaction and Reactor Review Problems
ChE372Homework 1 Problem Statements
(1)
(2)
(3)
(4)
(5)
(6)
Solution (c): 124 mol/h
(7)
The standard heat of reaction for the
ChE372 - Chemical Reactor Analysis and Design
Exam#2
Fall 2012
Monday, October 29st 2012
*Problem #1 (10 points)
The following liquid-phase reactions take place in two identical CSTRs in series,
in which k1 = 0.05 min-1 and k2 = 1.32 L/mol*hr. The feed to
ChE372: Spring 2017
Homework 1
Review of Reaction Equilibrium and Stoichiometry
1. Consider the following reaction in an adiabatic tubular reactor.
A+B
C+D
Tin = 300 K
Tout =Tad
Stage - I
The average specific heat capacity of A, B, C, D are 25 cal/mol K e
ChE372: Fall 2016
CSTR and PFR Problems
1. The irreversible, gas phase trimerization reaction
3A > B r 2 MIA
is taking place at steady state in an ideal CSTR that has a volume of 10,000 liters. The feed to
the reactor is a 1/1 molar mixture of A and N2 at
ChE 372 Exam 1 - Solution Tuesday, February 24, 2004
Instructions
1. Write your name at the top of each answer sheet and on the front page of the
exam questions.
2. Start each problem at the top of a new page.
The exam consists of three equally weighted
Oil/E 312 I”{om&Wo{K #751 369%4I'OM’
Q) PﬁnQPtLQ R’chﬂ‘OYL: F6103+ 3(— € QR“? 3(0
D‘Achch chpim: R103 + C é 3E0“? CO
CO YYIC used? b016an on Pn'horx-ﬂ I'QMCYL
Mirna? ngCé 31’.me C x #2 QLC
We; 11219er i Ebmre C.
mg m? : 2m£br§ojx
.; 4:1 Mac
0 eooﬂ,b-4
(k Ur.)
a» @v ml
(14/1) (H?) V /
few 1 9 “‘7”
mev’sim QM WWwM
NWH'K
L», «WW/4)
f
-b
t o m 6 a L: Arum-0.?) onﬂw‘
’ 5’
1c 6 mm 9) lav "MW-“5 :OA'Bﬁmm A “9 B V‘chfqn
Asamrwa cansi’d’J/ﬂ‘ VOW/ML.
‘ .' dam
Bot/WA maofw W; JCCAW
0” 1:
(£04
j’T if/koﬁf
CA
W o
Homework #3 (6 Problems):
Assigned: Tuesday, September 8
Due: Wednesday, September 16 in Recitation
From Book (Rawlings and Ekerdt):
4.1, 4.2, 4.4, 4.7
From Additional Problems (on next page):
Additional Problems 1 - 2
Additional Problem 1:
Additional Pro
Homework #5 (5 Problems):
Assigned: Tuesday, September 22
Due: Tuesday, September 29 at 9:30 AM
From Book (Rawlings and Ekerdt):
4.15
From Additional Problems (on next page):
Additional Problem 1 through 4
Additional Problem 1:
Consider an irreversible, f
Homework #4 (5 Problems):
Assigned: Tuesday, September 15
Due: Tuesday, September 22 at 9:30 AM
From Book (Rawlings and Ekerdt):
4.5
From Additional Problems (on next page):
Additional Problems 1 through 4
Additional Problem 1:
Additional Problem 2:
The i
Homework #2 (6 Problems):
Assigned: Tuesday, September 2
Due: Tuesday, September 8 at 9:30 AM
From Book (Rawlings and Ekerdt):
5.2, 5.3, 5.4
From Additional Problems (on next page):
Additional Problem 1, 2, 3
Additional Problem 1:
Additional Problem 2:
Ra
ChE372: Spring 2017
Exam I preparation problems: CSTR and PFR
1. The irreversible, gas phase trimerization reaction
3A B
r = kCA
is taking place at steady state in an ideal CSTR that has a volume of 10,000 liters. The feed to
the reactor is a 1/1 molar mi
ChE372: Spring 2017
Homework -III
1. An irreversible gas-phase reaction is conducted in an isothermal batch reactor operated at 400
K. The overall reaction may be represented by
r = 0.75c2A m3 /mol-h
A P + 2S
The reactor is initially filled with pure A an
Hea+ TMHW a+ mud Jamar-2mm: T (law be Cale-Jar
prom SPzdc (Bunk Au. D TOPS"
QC) EvluLI-awm Cans+aun+ KC'T')
cfw_d3 Eyjklah'm CWSM M A ~pumc4-I'O'rlo. Tmrkrn'hxr-c
W
I N
0' (Ink) = 3141
Emrahmhva w "T. +5 T). (Whine kt :-. K ('13) 1%: M
'5. _. Proble
ChE372: Spring 2017
Homework -IV
1. The liquid phase reaction
r = k1 CA2 k2 CC CD
2A
C+D
was tested in a laboratory CSTR with these results.
Residence time (hrs)
% conversion of A
0.8 5.0
50 60
Feed concentrations were cA0 = 2 mol/L and the others zero.
ChE372: Spring 2017
Homework2: Solving ODEs and Transport Review
Problem 1: (Reaction-Diffusion problems in Catalyst). You have learned to solve
such problems in Transport phenomena. You have also derived effectiveness
factor for cylindrical pores, slab a
ChE372 - Chemical Reactor Analysis and Design
Exam#3
Fall 2012
Monday, November 26th 2012
Problem #1 (10 points)
Consider a reaction taking place in a bed of catalyst particles of size R1 and also in
another bed of particles of size R2. Show under what co
Mole Balance :
d
c j dV =Qc j 0Q1 c jLevenspiel Plot
1+ R j dV
dt
Important Relations
c j=C T =
Max C A :d CA / dt =0 find t
( . Rate) R A =r ACoeff Ex
N j=
Q
P
RT
=V R /Qf
Definitions
For
PSSH
x=[ -b b2 -4ac ] /2a
Quadratic Formula:
Identify short-l
ChE372: Spring 2017
Quiz III
Problem(Fall 2016 Exam -I): Consider the gas phase reaction in a constant volume batch reactor:
k
1
A+B
C
r = k1 cA cB k2 cC
k2
Initially the reactor is charged with a mixture of equal amounts of A and B. The initial pressure
ChE 372 Fall 2016
Reaction Equilibrium Quiz
Problem 1: Sulfur dioxide is converted to sulfur trioxide over a V2O5 catalyst at a
pressure of 1.5 atm.
SO2 + O2 SO3
In the reactor configuration in figure below, 100 mol/min feed with composition of
11% SO2, 1
ChE372: Spring 2017
Quiz IIa (Extra Credit 50 points)
Problem(Fall 2014 Exam -I): Consider the following consecutive reaction shown below in a
batch reactor:
k
k
k
A 1 B 2 C 3 D
At time t = 0:
The reactor is charged with pure A. The initial concentration