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Materials and Chemical Engineering
What is the Validity of the Rate Equation in Different Reactor Types?
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[QUOTE="Chestermiller, post: 6243960, member: 345636"] You are aware that, in a PFR reactor, the reactor is assumed to operate at steady state so the temperature at any fixed location in the reactor is not changing with time, correct? It is changing with spatial position (cumulative volume V) through the reactor. And, if we define V/Q as the cumulative residence time from the inlet to cumulative volume V (i.e., ##t_r##), then $$\frac{dF_a}{dV}=Q\frac{dC_a}{dV}=r_a$$or$$\frac{dC_a}{dt_r}=r_a$$ So the concentration varies with the cumulative residence time in the PFR in exactly the same way it varies with the clock time for a batch reactor. [/QUOTE]
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What is the Validity of the Rate Equation in Different Reactor Types?
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