The elementary irreversible liquid-phase reaction A+2B→C is to be carried out in a semi batch reactor in which B is fed to A. The volume of A in the reactor is 10 dm³, the initial concentration of A in the reactor is 5 mol/dm³, and the initial temperature in the reactor is 27°C. Species B is fed at a temperature of 52°C and a concentration of 4 M. It is desired to obtain at least 80% conversion of A in as short a time as possible, but at the same time the temperature of the reactor must not rise above 130°C. You should try to make approximately 120 mol of C in a 24-hour day, allowing for 30 minutes to empty and fill the reactor between each batch. The coolant flow rate through the reactor is 2000 mol/min. There is a heat exchanger in the reactor.
a. What volumetric feed rate (dm³/min) do you recommend?
b. How would your answer or strategy change if the maximum coolant rate dropped to 200 mol/min? To 20 mol/min?
Additional information:

Transcribed Image Text:

AHRX =-55,000x cal/mol ACPA=35xcal/mol K, CPB=20x cal/mol K, CPC=75xcal/mol Kk-0.0005 dm6mol2 minat 27 C with E = 8000 cal/molUA = 25 00 calmin K x with Tax-17-CCPx (coolant) = 18 cal/mol K