Chemical Reactor Batch and CSTR size and conversion

1. Today’s Lecture 1/10/08 (3)
• Block 1: Mole Balances (Review)
Size CSTRs and PFRs given –rA=f(X)
Conversion for Reactors in Series
• Block 2: Rate Laws
Reaction Orders
Arrhenius Equation
Activation Energy
Effect of Temperature

3. fed
A
moles
reacted
A
moles
X
D
a
d
C
a
c
B
a
b
A
n
calculatio
of
basis
as
A
reactant
limiting
Choose
D
d
C
c
B
b
A
a










5. Levenspiel Plot

FA 0
rA

X

6. CSTR

FA 0
rA

X
Area = Volume of CSTR

X1

V 
FA 0
rA



X1
 X1

7. PFR
FA 0
rA
Area = Volume of PFR

V  0
X1

FA 0
rA






dX

X1

8. •Review of Lecture 1

9. Two steps to get
Step 1: Rate Law
Step 2: Stoichiometry
Step 3: Combine to get

rA  f X
 

rA  g Ci
 

Ci
  h X
 
rA  f X
 

12. Arrhenius Equation

13. Reaction Coordinate