Reaction Engineering
Isothermal Reactor Design (I)
Dr. Salim Nassreddine
University of Balamand, Al-Koura
Department of Chemical Engineering

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Slides courtesy of Prof M L Kraft, Chemical & Biomolecular Engr Dept, University of Illinois at Urbana-Champaign.
Relate all
V(
υ
) to X
A
Put
together
Review: Derive –r
A
= f(X
A
)
Relate all
r
j
to C
j
ν
j
≡ stoichiometric coefficient
⊕
for products,
⊖
for reactants
Relate all
C
j
(X
A
) to
V(
υ
)
•
j
A
j
r
r
ν
−
=
(
)
j
j0
j
A0
A
j
N
N
N
X
C
V
V
ν
+
=
=
(
)
j
j0
j A0
A
j
F
F
F
X
C
ν
υ
υ
+
=
=
Batch:
Flow:
(
)
0
0
A
0
0
P
T
Z
V
V
1
X
P
T
Z
ε
=
+
Batch:
Flow:
(
)
0
0
A
0
0
P
Z
T
1
X
Z
T
P
υ
υ
ε
=
+
j0
j
A0
A
0
0
j
A
0
C
C
X
T
Z
P
C
1
X
P
T
Z
ν
ε
+
=
+
Batch
&
Flow:
Now that C
j
is in terms of X
A
, we can write the rate law in terms of X
A