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

fedA moles

reactedA moles X

D a

d C

a

c B

a

b A

ncalculatio of basis asA reactant limiting Choose

D d C c B b A a

Levenspiel Plot

FA 0

rA

X

CSTR

FA 0

rA

X

Area = Volume of CSTR

X1

V FA 0

rA

X1

X1

PFR

FA 0

rA

Area = Volume of PFR

V 0

X1FA 0

rA

dX

X1

•Review of Lecture 1

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

Arrhenius Equation

Reaction Coordinate