Page 530 - Elements of Chemical Reaction Engineering Ebook

500 Steady-State Nonisothermal Reactor Design Chap. 8

An example is given on the CD-ROM which maps out the regions where mul-
tiple steady states are possible and not possible for the reaction

1
co+ - 0, Pt_S CO,
2
with the rate law

A portion of the solution to the example problem is shown here (Figure
CDE8- 1. l), highlighting regions where inultiple steady states are not possible.

8 KCAO
Figure CDES-1.1 Mapping the regions of no multiple steady states.

8.7 Nonisothermal Multiple Chemical Reactions

8.7.1 Plug-Flow Reactors

In this section we give the energy balance for multiple reactions that are in
parallel andfor in series. The energy balance for a single reaction taking place in
a PFR was given by Equation (8-60)

dT - U~(T,-T)+(-~,)[-~HR~(T)~
dV- m (8-60)
c F1Cp
I=1
When q multiple reactions are taking place and there are m species, it is
easily shown that Equation (8-60) can be generalized to

Energy balance for (8-87)
I multiple reactions
I I
I j=1 I