反应工程英文版课件Chapter 7.pdf
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Chap. 7 Multiple Reactors
Basic types of multiple reactions:
a Parallel reactions (competing reactions):
k
D
A → D
k
U
A → U
b Series reactions (consecutive reactions):
k k
1 2
A → →
B C
c A combination of parallel and series reactions:
k
1
A + B → C + D
k
2
A + C → E
d Independent reactions:
k
1
A → B
k
2
C → D + E
e Others (e.g., autocatalytic reactions, …)
Non-elementary reactions ⇔ PSSH
A. Irreversible Reactions in Parallel
a Reaction kinetics:
k
D
A → D (elementary)
k
U
A → U (elementary)
∴ r k C ; r k C
D D A U U A
−r r +r k C +k C (k +k )C
A D U D A U A D U A
For a constant volume-batch reactor
dC A C A
(k k )C ln (k k )t ( A )
− + ⇒ − + −−−−
dt D U A
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