Additional Homework Problems

A novel reactor used in special processing operations is the foam (liquid + gas) reactor (Figure CDP1-B).

Figure CDP1-B Foam reactor.

Assuming that the reaction occurs only in the liquid phase, derive the differential general mole balance equation in terms of

-r_A = rate of reaction, g mol A per cm³ of liquid per second

e = volume fraction of gas

F_A = molar flow rate of A, g mol/s

V = volume of reactor

(Hint: Start from a differential mole balance.)

[2nd Ed. P1-10]