Page 175 - Modelling in Transport Phenomena A Conceptual Approach

6.2. CONSERVATION OF MASS 155

Stream Volumetric Flow Rate
No (L/ h)
1 500
2 600
3 750
4 800
5 700
6 500
7 200
8 700
9 50
10 150
11 100

For each reactor, the reaction rate constant is

k=3x105exp [ - (3::i73,] = 0.359 h-' for reactor # 1

k=3x105exp [ - ,4::i73,] = 0.551 h-' for reactor # 2

k = 3 x lo5 exp [- 4200 ] = 1.443 h-' for reactor # 3

(70 + 273)

k=3x105exp [ - (6::i73)] = 0.999 h-' for reactor # 4

For each reactor, the consewation statement for species A, Eq. (6.1-7), can be
written in the form

Simplijication gives

-
8.872~~~ CA~ = 7.5
4 CA~ - 8.673 CA~ + CA~ = 0
~
~+ CA~ = 0
1 5 - 50.632~~~
~
0
CA~ - 2.284~~~
=