Sec. 2.3
Design Equations for Flow Readors
43
pure A enters, the total pressure and partial pressure entering are the same. The entering molar flowrate, FA, is just t he p d u c t of the entering conc
Chaa. 1
Questions and Probl~rrrs
29
Here photograph\ and ichernatics of the equiprnenr along with the feed rate\. reactor sizes. and principal renotlons
are also discussed i n the PRS.
CIUEST1ONS A N
28
E ~implrs of ~nrlu\tr~rtleacr~ons r
and reactors
N~trobanzens
I
Mole Balances
Chap.
'
3. The productitm of nitrobenzene exnmple problem. Here thc procesh Ilo~r
rheet
ir
p rven. don: w ith operating
Chap 1
4.
CDROt! Material
27
L ~ v i n gExample Problem
Smog in L A .
Solved Pmhlerlw A . C DPIAB Batch Reactor Calculations: A Hn o f T hings to Come it B. P I14, Modeling Smog i n the L.A. Basin
26
Mole
Batrnces
Cclap. T
CDROM MATERIAL
Learning Resources
1
.
2
Summa. y Motes
S ~irntlrar~ tdorrs Web Miireriol A . ProblemSolving Algnr~rhin B. G e t ~ ~ n p Unstuck on a Problen~ Thic \ire on t
Chap. 1
Sun?mary
25
SUMMARY
Each chapter summary g iles the L cy points of the chapter that need to be remembered and carried into succeeding chnpters.
I. A
a
more balance on species j . u h ~ c h nte
24
Mole Balances
Chap. 1
Refe:enceChe1f
sclu& Roblemr
gas flow occurs. resulting in ineffective use of piins of the reactor bed. The ad%antageof the packedbed reactor i s that for most reactionr i t
Sec
r
5
Industriat Rsac!ors
1
A+B
I
V
(kV/~*l
U ~ i n ghe conditions a ihc entrance e f the reactor that when V = 0 , B en C , = C , t
 5f:d5 , , V J:(
kr C,
Carrying oul the integration o f Equatio
20
Mole Balances
Chap.
'
1 . Sketch the concentration prof le. 2. Derive an equation relating the reactor volume to the entering and exitrng concentrations of A , the rate constant R , and the volumet
Sec. 1.4
ContinuousFlow Reactors
19
As with the PFR,the P BR is assumed to have n o radial gradients i n concentration, temperature, or reaction rate. T he generalized mole balance on species A over
d8
M ole Balances
Chap. 1
reactor volume, K For a fluidsolid heterogeneous system, the rate of reaction of a substance A is defined as
 r; = mol A reacted/s.g catalyst
The mass of solid catalyst is
S ec. 1.4
ContinuovsFlow Reactors
27
Consequently. w e see that Equation ( I  I I ) applies equally well to our model o f tubular reactors of' variable and constant crosssectional area, although ir
Mole Balances
Chap. 1
(c) Write a question based on the material in this chapter that involves critic al thinking a nd explain why it involves c ntical thinking.
( d ) Repeat ( c) for creative thinkin
Chap. 1
Ouestions and Problems
31
PI10,
1
How can you conven the general mole balance equation for a given species, Equation cfw_ 14) to a general mass balance equation for that species? We are goi
42
The entering molar f o rate is lw
Conversion and Reactor Sizing
Chap. 2
where C, = entering concentration, mol /dm3
y,
= entering mole fraction of A
P, = entering total pressure, e.g., kPa
P A, = .
Sec. 2.3
Design E quatio~s r F!ow Reactors b
41
reactor volume. e.,a. the biggert'lonper the reactor, the more t ime i t will take the reactant5 to Row conipleteIy through the reactor and thus, the mo
40
Conversion and Reactor S it~ng
Chap.
We call Equation ( 26) the differential form o f t he design equation for batch reactor because we have written the mole balance in terms of conversior The dif
Sac. 2 2 .
Batch Reactor Design Equations
39
Now, the number of moles of A that remain i n the reactor after a time r , N , can be expressed in terms of NAOnd X: a
Moles of A that
The number of moles
38
Conversion a nd Reactor Sizing
Chap. 2
2 1 Definition o Conversion . f
In defining conversion, we choose one of the reactants as the basis of calculation and then late the other species involved i
C onversion and Reactor Sizing
2
Be more concerned with your character than with your
reputation, because character is what y ou r edly are while reputation i merely what others think you are. s J ohn
36
Mola Balances
Chap.
. simiIar book. w hich describes a larger nuniber o f processes, i s 4
AL'STIY.
C. T. S l ~ r e ~ ~ e ' ~ Clirrnicnl PTOCF.TF Indrrstrirs. 5th ed. New Yorb McGrawHill, 1984.
d
Chap. 1
Supplementary R eading
N umkr of households Households wlth pianos 5 . Average number of tunes per year 6. Etc. An answer is given on the web under Summary Notes for Chapter 1 . PI20, EFP #2.
34
P117,
Mole Balances (a) There are initially 5 0 0 rabbits f x) and 200 foxes ( y) on
Chap. 1
F m e r Oat's property. Use Polymath or MATLAB to plot the concentration of foxes and rabbits as a func
Chap. 1
Ouestions and Problems
Q ~ ~ c a n t manklim s or hills
C.A.
vo
Wlndfm
SFde view Figure P I14 Schematic diagmrns o r the Loc AngeIes basin.
l iving Efample Prob!em
We shall perform an unstead
Mole Balances
Chap.
Dew Chemical
Dupont E xxonMobil
General Electnc H unt~man orp. C
PPG l ndustrie~ Equistar Chemicals Chevron Phil lips Enstrnsn Cheti~lcal Prarair
Refemnres: Rank 1002. Chrmirul ort
16
Mole Balances
Chap. 7
M olar f low
M olar flow
,
In

Out
of species j within A V +g en era ti on = Accumulation within A V
Generotinn o f s pecies j
Dividing by A V and rearranging
the term in br
Sec. l d .
ContintlousFlow Reactors
15
e e P RS and E nr~cloprEqltip~nt.
Figure 18(a) Tubular reoclrw w herna~ic Longitudinal tubular reactor. [Excerpted b! s pctnl permission from C IINII.E lla, h3
xxxii
Preface
only gave suggestions and a critical rending of m any section'; but. most importantly, provided continuous support and encouragement throughout the course of this project. Don MacLaren (
S ec. H
Acknowledgments
x xxi
contributions to the first, second. and third editions (see Introduction, CDROM). For the f ourth edition, 1 give special recognition a s follows. First of all. I thank