Chemical Reaction Engineering Asynchronous Video Series

1
Chemical Reaction Engineering Asynchronous
Video Series

• Chapter 6, Part 1
• Series, Parallel and Complex Liquid Phase
  Reactions
• Selectivity, Mole Balances and
• A--gtB--gtC in a Batch Reactor
• H. Scott Fogler, Ph.D.

2
Multiple Reactions

• Use molar flow rates and concentrations DO NOT
  use conversion!
• Types of Multiple Reactions
• Series Reactions
• Parallel Reactions

3
Multiple Reactions

• Use molar flow rates and concentrations DO NOT
  use conversion!
• Types of Multiple Reactions
• Series Reactions
• Parallel Reactions
• Complex Reactions Series and Parallel
• Independent

4
Selectivity and Yield

• Instantaneous Overall
• Selectivity

5
Selectivity and Yield

• Instantaneous Overall
• Selectivity
• Yield

6
Selectivity and Yield

• Instantaneous Overall
• Selectivity
• Yield
• Example (1) desired product , rDk1CA2CB
• (2) undesired product , rUk2CACB

7
Selectivity and Yield

• Instantaneous Overall
• Selectivity
• Yield
• Example (1) desired product , rDk1CA2CB
• (2) undesired product , rUk2CACB
• Run at high concentration of A. Therefore, use a
  PFR.

8
Selectivity and Yield

• (1) desired product , rDk1CA2CB
• (2) undesired product , rUk2CACB
• Add a third reaction.
• (3)

9
Selectivity and Yield

• (1) desired product , rDk1CA2CB
• (2) undesired product , rUk2CACB
• Add a third reaction.
• (3)

then
SD/U1/U2
CA
10
Modification of the Algorithm for Multiple
Reactions
11
Modification of the Algorithm for Multiple
Reactions
12
Modification of the Algorithm for Multiple
Reactions
13
Modification of the Algorithm for Multiple
Reactions
14
Modification of the Algorithm for Multiple
Reactions
15
Mole Balances
16
Mole Balances
17
Mole Balances
18
Mole Balances
19
Mole Balances
20
Net Rate of Reaction for Species A
21
Net Rate of Reaction for Species A
22
Series Reactions
23
Series Reactions
24
Series Reactions
, t0 CACA0
25
Series Reactions
26
Series Reactions
27
Series Reactions
28
Series Reactions
29
Series Reactions