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Transient Behavior of N CSTRs in Series with Chemical Reaction

​
number of CSTRs in series
5
Consider the chemical reaction:
A
1
k
1
⇌
k
1
A
2
k
2
⇌
k
2
A
3
taking place in
N
CSTRs (continuously stirred tank reactors) in series. The tanks' holding time,
θ
, is assumed constant equal to 1. The inlet to the first reactor is pure
A
1
. The reaction rate constants are chosen as:
k
1
=0.20
,
k
1
=0.05
,
k
2
=0.10
, and
k
2
=0.05
. It is also assumed that the concentration of all species in all tanks is initially equal to zero. An analytical expression for the exit concentration of the three chemical species was found by Acrivos and Amundson in 1955 (see reference below a for detailed derivation using matrix mathematics).
This Demonstration plots the transient behavior of the exit concentration of species
A
1
,
A
2
, and
A
3
in blue, magenta, and brown, respectively, for user-set values of the number
N
of CSTRs in series.
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