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Essentials of Chemical Reaction Engineering by H. Scott Fogler

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2.3.2 Tubular Flow Reactor (PFR)

We model the tubular reactor as having the fluid flowing in plug flow—i.e., no radial gradients in concentration, temperature, or reaction rate.1 As the reactants enter and flow axially down the reactor, they are consumed and the conversion increases along the length of the reactor. To develop the PFR design equation, we first multiply both sides of the tubular reactor design equation (1-12) by –1. We then express the mole balance equation for species A in the reaction as

2-14

image

For a flow system, FA has previously been given in terms of the entering molar flow rate FA0 and the conversion X

2-12

Differentiating ...

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