(a) For the reaction of Problem 5.21, what size of mixed flow reactor is needed for 75% conversion of a feed stream of 1000 mol A/hr at C_A0 = 1.2 mol/liter?

(b) Repeat part (a) with the modification that the feed rate is doubled, thus 2000 mol A/hr at C_Ao = 1.2 mol/liter are to be treated.

(c) Repeat part (a) with the modification that C_Ao = 2.4 mol/liter; however, 1000 mol Alhr are still to be treated down to C_Af = 0.3 mol/liter.

Problem 5.21

We are planning to operate a batch reactor to convert A into R. This is a liquid reaction, the stoichiometry is A+R, and the rate of reaction is given in Table P5.21. How long must we react each batch for the concentration to drop from C_OA = 1.3 mol/liter to C_Af = 0.3 mol/liter?

Transcribed Image Text:

CA, mol/liter 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 1.0 1.3 2.0 Table P5.21 -A, mol/liter . min 0.1 0.3 0.5 0.6 0.5 0.25 0.10 0.06 0.05 0.045 0.042