The elementary liquid-phase-series reactionis carried out in a 500-dm3 batch reactor. The...

The elementary liquid-phase-series reaction

is carried out in a 500-dm3 batch reactor. The initial concentration of A is 1.6 mol/dm3 The desired product is B, and separation of the undesired product C is very difficult and costly. Because the reaction is carried out at a relatively high temperature, the reaction is easily quenched.

kl = 0.4 h- 1

k2 = 0.01 h- 1 at 100°C

(a) Assuming that each reaction is irreversible, plot the concentrations of A, B, and C as a function of time.

(b) For a CSTR space time of 0.5 h, what temperature would you recommend to maximize B? (E1 = 10,000 ca l/mol, E2 = 20,000 cal/mol)

(c) Assume that the first reaction is reversible with k-1 = 0.3 h- 1• Plot the concentrations of A, B, and C as a function of time.

(d) Plot the concentrations of A, B, and C as a function of time for the case where both reactions are reversible with k-2 = 0.005 h- 1

(e) Vary k1, k2 , k-1, and K-2 • Explain the consequence of k1 > 100 and k2<0.1 with K-1 = K-2 = 0 and with K-2 = 1, K-1 = 0, and K-2 = 0.25.

Note: This problem is extended to include the economics (profit) in CDP6-B13.

All reaction rate constants are in units of h-1