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Green Chemical Engineering
book

Green Chemical Engineering

by S. Suresh, S. Sundaramoorthy
December 2014
Intermediate to advanced content levelIntermediate to advanced
541 pages
17h 38m
English
CRC Press
Content preview from Green Chemical Engineering
349Heterogeneous Reactors
where C
Ae
and C
Be
are the equilibrium concentrations of A and B, respectively. Writing
Equation 4.183 in terms of equilibrium constant K, we have
()−=
rkC
C
K
AA
B
1
(4.185)
The total molal concentration of A and B is constant, as for every 1 mole of A reacted 1
mole of B is formed. Thus
CC CC
BAeBeA
=+
(4.186)
CKCC
BAeA
=+ ()1
(4.187)
Substituting Equation 4.187 for C
B
into Equation 4.185, we get
()
()
()
−=
+
r
kK
K
CC
AA
Ae
1
1
(4.188)
Substituting this specic reaction rate Equation 4.188 into the molal balance Equation
4.155 derived for a spherical catalyst pellet, we get
dC
dr r
dC
dr
k
D
K
K
CC
AA
p
A
AAe
2
2
1
21
0+−
+
−=
ρ
()
(4.189)
Substituti ...
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Publisher Resources

ISBN: 9781466558830