Page 59 - Elements of Chemical Reaction Engineering Ebook

30 Mole Balances Chap. 1

(b) List various journals, books, or other sources where you will find details
about the construction and safety of industrial reactors.
P1-16c What are typical operating conditions (temperature, pressure) of a catalytic
cracking reactor used in petroleum refining?
P1-17A View the photos and schematics on the CD-ROM under Elements of Chemical
Reaction Engineering-Chapter 1, Look at the quicktime videos. Write a para-
graph describing two or more of the reactors. What similarities and differences
do you observe between the reactors on the Web and in the text?
P1-18A (a) There are initidly 500 rabbits (x) and 200 foxes (y) on Farmer oat's property.
Use POLYMATH or MKI'LAB to plot the concentration of foxes and rabbits as a
function of time for a period of up to SO0 days. The predator-prey relationships are
given by the following set of coupled ordinary differential equations:
dx -- - k,x- k,x.y
dt
9 k,x.y - k4y
=
dt
Constant for growth of rabbits kl = 0.02 day-'
Constant for death of rabbits k2 = 0.00004/(day X no. of foxes)
Constant for growth of foxes after &g rabbits k3 = O.O004/(day X no. of rabbits)
Constant for .death of foxes k4 = 0.04 day-'
What do your results look like for the case of k3 = 0.00004/(day X no.
of rabbits) and tfinal = 800 days? Also plot the number of foxes versus the
number of rabbits. Explain why the curves look the way they do.
Vary the parameters kl, k2, k3, and k4. Discuss which parameters can or
cannot be larger than others, Write a paragraph describing what you find.
(b) UsepoLMMA5Hor~tosolvetkf~setofnonlinearal~~
X3y - 4y= + 3x = 1
6y2 - 9xy = 5
with initial guesses of x = 2, y = 2. Try to become familiar with the edit
keys in POLYMATH MatLab. See CD-ROM for instructions.
P1-19~ Load the Interactive Computer Module (ICM) hm the CD-ROM. Run the module and
then record your performance number for the module which indicates your masteFing of
the mterial. Your pmfessor has the key to decode your Ixefofmance numbex
ICM Kinetics Challenge 1 Performance #
P1.20A Surf the CD-ROM included with this text and also
the www(http://www.engin.umich,edu/-cre).
(a) Approximately how many additional solved example problems are there?
(b) List at least one video clip.
(c) In what lectures are activation energy discussed?
(d) What photos are in the Wetlands Module?
P1-21A Read through the preface. Write a paragraph describing both the content gods
and the intellectual goals of the course and text. Also describe what's on the
CD and how the CD can be used with the text and course.
P1'22A Review the objectives on the CD-ROM. Write a paragraph in which you
describe how well you feel you met these objectives. Discuss any difficulties
you encountered and three ways (e.g. meet with professor, class mates) you
plan to address removing these difficulties.
i
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