Using stoichiometry, we set up all of our equations with the amount of reactant A as our basis.

Batch System Stoichiometric Table :

Species	Symbol	Initial	Change	Remaining
A	A
B	B
C	C
D	D
Inert	I	________	-------	____________

Where:

and

Concentration -- Batch System:

Constant Volume Batch:

[a liquid phase reaction, or a gas phase reaction in a rigid (e.g., steel) reactor]

etc.

Writing -r_A only as a function of X

Flow System Stoichiometric Table :

Species	Symbol	Reactor Feed	Change	Reactor Effluent
A	A
B	B
C	C
D	D
Inert	I	________	-------	____________

Where:

	and

Concentration -- Flow System:

Liquid Phase Flow System:

etc.   If the rate of reaction were then we would have This gives us -rA = f(X). Consequently, we can use the methods discussed in Chapter 2 to size a large number of reactors, either alone or in series.

Gas Phase Flow System:

etc.   Again, these equations give us information about -rA = f(X), which we can use to size reactors.

 Matching C_A versus X curves

What Four Things are Wrong With this solution? Chapter 3

Back to Bits and Pieces