Page 292 - Elements of Chemical Reaction Engineering 3rd Edition

264 Collection and Analysis of Rate Data Chap. 5

Each type of reactor is examined with respect to these criteria and given
a rating of good (G), fair (F), or poor (P). What follows is a brief description
af each of the laboratory reactors. The reasons for rating each reactor for each
of the criteria are given in the CD-ROM.

5.7.1 Integral (Fixed-Bed) Reactor

One advantage of the integral reactor is its ease of construction (see
Figure 5-14). On the other hand, while channeling or bypassing of some of
the catalyst by the reactant stream may not be as fatal to data interpretation in
the case of this reactor as in that of the differential reactor, it may still be a
problem.

Figure 5-14 Integral reactor.

5.7.2 Stirred Batch Reactor

In the stirred batch reactor the catalyst is dispersed as a slurry, as shown
in Figure 5- 15. Although there will be better contacting between the catalyst
and the fluid in this reactor than either the differential or integral reactors,
there is a sampling problem in this reactor.

I

Good-fluid solid
contact

Figure 5-15 Stirred batch reactor. [From V. Weekman, AIChE J. 20, 833, (1974)
with permission of the AIChE. Copyright 0 1974 AIChE. All rights reserved.]