This paper presents the micromixing
times in a rotor–stator
spinning disc reactor. Segregation indices are obtained at different
rotational speeds performing the Villermaux–Dushman parallel-competitive
reaction scheme. Consequently, the corresponding micromixing times
are calculated using the engulfment model, while considering the self-engulfment
effect. It was found that the segregation index decreases with an
increasing disc speed. Furthermore, for the investigated operational
conditions, the estimated micromixing times are in the range of 1.13
× 10–4 to 8.76 × 10–3 seconds, in agreement with the theoretical dependency on the energy
dissipation rate of ε–0.5. In a rotor–stator
spinning disc reactor it is thus possible to further continue the
theoretical trend of decreasing micromixing times with very high levels
of energy dissipation rates that are unattainable in traditional types
of process equipment.
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