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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
160 Green Chemical Engineering
Consider the PFR followed by the CSTR, the rate equation for the rst-order reaction is
x
Af
x
A1
V
C
A0
x
A
= 0
V
AB
k
→
()
()−=
rk
Cx
AA
OA
1
Space time τ for the PFR is
τ=
()
=−
C
dx
rx k
x
AO
A
AA
x
A
Af
()
ln
()
0
1
1
1
xe
A
k
1
1=−
−τ
Space time τ for the CSTR is
τ=
(
)
=
Cx x
rx
xx
kx
AO Af A
AAf
Af A
Af
()
()
()
()
11
1
C
A0
X
A
X
Af
X
A1
PFR
= Area AB
CD
Area
OADE =
C
D
E
0
A
B
τ
x
A1
is calculated
such that area OADE = area
ABCD
C
A0
CSTR
τ
–r
A
(x
A
)
1
FIGURE 3.15
Graphical method for calculation of x
Af
for CSTR followed by PFR.
161Homogeneous Reactors
kx
xx
Af Af A
τ
()1
1
−=
Rearranging t ...
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Publisher Resources

ISBN: 9781466558830