Examples 9.4 through 9.7 illustrate the approach to problems dealing with non isothermal reactors. This approach to multistage operations of solid catalyzed reactions.

To reinforce these concepts, Problems 9.1 through 9.9 ask the reader to redo these examples with one or more changes. In many of these problems there is no need to redo the whole problem, just indicate where changes are needed in text and graphs.

Example 9.4

Using the optimal temperature progression in a plug flow reactor for the reaction

(a) Calculate the space time and volume needed for 80% conversion of a feed of F_A0 = 1000 mol/min where C_Ao = 4 mol/liter.

(b) Plot the temperature and conversion profile along the length of the reactor.

Redo Example 9.7

XA 1.0 0.8 0.6 0.4 0.2 1 Optimum progression 20 -TA = 0.4 E 0.485 Feed, 25C -Equilibrium 0.34- 0.27 40 60 Temperature, C 0 80 C A B (-rA) 1100 I Tmax = 95C 2.5 2.0 1.5 1.0 0.5 0 Path ABCDE from Fig. E4a or E3 Total area = 0.8 0.2 0 10% of area reaches this point dXA -TA 0.4 XA = 0.405 0.6 0.8