#6925. Residence time distribution in reactive and non-reactive flow systems in micro and millidevices

December 2026publication date
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Journal’s subject area:
Industrial and Manufacturing Engineering;
Chemical Engineering (all);
Chemistry (all);
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Abstract:
The present research evaluated the Residence Time Distribution (RTD) of three microdevice designs (Traditional T-shape, MTB and G1) in two flow conditions: non-reactive flow and reactive flow (biodiesel synthesis). Also, the scale-up effects on RTD were explored for the space time (?) range between 2 and 60 s. In general, the deviation between mean residence time and ideal space time decreased with increasing ?. The axial dispersion analysis showed larger deviations from plug flow for oil streams, while ethanol streams exhibited plug flow behavior for longer space times (? ? 30 s). Despite this, high oil conversions (>90%) and relatively high biodiesel throughputs (?19 g/h, about 63 greater than T-shape microchannels) were observed for MTB millidevices and G1 devices. Despite the observed deviations from plug flow, the proposed micromixer designs provided good performance for biodiesel synthesis.
Keywords:
Biodiesel synthesis; Microfluidics; Plug flow; Process intensification; Residence time distribution; Scale-up

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