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Type 2 Home Problem
Problems that require intermediate calculations or manipulations.
Our tubular reactor consists of a cylindrical pipe and operates at steady-state. The turbulent flow we expect may be modeled by that of a plug flow reactor (PFR). A PFR has no radial variation in concentration.
We start with the general steady-state mole balance for the PFR:
Rearranging gives:
Taking the limit as 
, we obtain:
From the definition of conversion, FA is:
Then substituting FA into the differential, we get:
Inserting our rate law (-rA=kCAo(1-X)) and dividing both sides by FAo, we get our PFR design equation:
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CRE Thoughts Ten Types Homogeneous Example 2