Maximizing Conversion to an Intermediate Product in a Chain of Three CSTRs in Series

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This Demonstration examines a three-stage continuous-flow stirred tank reactor (CSTR). The concentration of an intermediate product of a series of consecutive reactions exiting the third reactor is to be maximized by varying the relative volumes of the reactors.

Contributed by: Clay Gruesbeck (November 2012)
Open content licensed under CC BY-NC-SA


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Consider the consecutive first-order reaction with and representing the reaction rate constants. The equations describing the steady state condition of three CSTRs in series are

and ,

where and are the reactant concentrations, is the flow rate, is the reactor volume for reactors , with initial concentrations and . Here , , and .

The concentration of reactant exiting the third reactor can be maximized by varying the reactor volumes.



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