A step tracer input was used on a real reactor with the following results:
For t ≤ 10 min, then CT = 0.
For 10 ≤ t ≤ 30 min, then CT = 10 g/dm3.
For t ≥ 30 min, then CT = 40 g/dm3.
The second-order reaction A → B with k = 0.1 dm3/mol • min is to be carried out in the real reactor with an entering concentration of A of 1.25 mol/dm3 at a volumetric flow rate of 10 dm3/min. Here, k is given at 325 K.
- (a) What is the mean residence time tm?
- (b) What is the variance σ2?
- (c) What conversions do you expect from an ideal PFR and an ideal CSTR in a real reactor with tm?
- (d) What is the conversion predicted by
- (1) the segregation model?
- (2) the maximum mixedness model?
- (e) What conversion is predicted by an ideal laminar flow reactor?
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Elements of Chemical Reaction Engineering (5th Edition) (Prentice Hall International Series in the Physical and Chemical Engineering Sciences)
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