Homework 4
1. The following liquid-phase parallel reaction is carried out in flow reactors.
The inlet concentration of A is 1M. If the outlet concentration of A is 0.1M, what are the reactor space time and the outlet concentrations of D and U when
(a) a PFR is used.
( b ) a CSTR is used.
2. The following liquid-phase elementary series reaction is carried out in a CSTR.
(a) Determine the concentrations of A, B, and C as functions of space time.
(b) Find the optimum space time of CSTR and the corresponding conversion of A to maximize the concentration of B.
1 2
A → →
kB
kC
D
U
A D ,
2, 1
A U , , 0.2
k
D D A D
k
U U A U