Question
The irreversible gas phase non elementary reaction A+2B ? C is to be carried out isothermally in a constant-pressure batch reactor. The feed is at
The irreversible gas phase non elementary reaction
A+2B ? C
is to be carried out isothermally in a constant-pressure batch reactor. The feed is at a temperature of 227? o C, a pressure of 1013 kPa, and its composition is 33.3% A and 66.7% B. Laboratory data taken under identical conditions are as follows (note that at X = 0, -r A =0.00001):
(a) ? Estimate the volume of a plug-flow reactor required to achieve 30% conversion of A for an entering volumetric flow rate of 2 m 3 /min. (b) ? Estimate the volume of a CSTR required to take the effluent from the plug-flow reactor (PFR) above and achieve 50% total conversion (based on species A fed to the PFR). (c) ? What is the total volume of the two reactors? (d ) ?What is the volume of a single plug-flow reactor necessary to achieve 60% conversion? 80% conversion? (e) ? What is the volume of a single CSTR necessary to achieve 50% conversion? (f) ? What is the volume of a second CSTR necessary to raise the conversion from 50% to 60%? (g) ? Plot the rate of reaction and conversion as a function of PFR volume. (h) ? Give a critique of the answers to this problem.
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