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/dm3at 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?

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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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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