2023
DOI: 10.1021/acs.iecr.2c04513
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Micromixing Performance and Residence Time Distribution in a Miniaturized Magnetic Reactor: Experimental Investigation and Machine Learning Modeling

Abstract: Miniaturization of mixers is a hot topic in process intensification, but efficient mixing at operational conditions with relatively large viscosity μ and large flow rate ratio R between two mixed solutions is still a great challenge for micromixers. Herein, a miniaturized magnetic reactor (MMR) is developed, and its micro- and macromixing performances are characterized by the Villermaux/Dushman reaction and residence time distribution experiments, respectively. The results show that the miniaturization of the … Show more

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Cited by 15 publications
(8 citation statements)
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“…However, a distinct trend of diminishing relative impact of the liquid flow rate on the segregation index is observed, in line with the results reported by many other authors. 9,30 Taking the rotational speed of 595 rpm as an example, an increase of buffer solution flow rate from 0.9 to 2.4 L/min results in a substantial decrease of the segregation index by up to 40.6%, whereas when the flow rate is increased from 3 to 5 L/min, the segregation index only exhibits a modest decline of 22.6%.…”
Section: R D Rementioning
confidence: 99%
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“…However, a distinct trend of diminishing relative impact of the liquid flow rate on the segregation index is observed, in line with the results reported by many other authors. 9,30 Taking the rotational speed of 595 rpm as an example, an increase of buffer solution flow rate from 0.9 to 2.4 L/min results in a substantial decrease of the segregation index by up to 40.6%, whereas when the flow rate is increased from 3 to 5 L/min, the segregation index only exhibits a modest decline of 22.6%.…”
Section: R D Rementioning
confidence: 99%
“…Among these, microchannel reactors, featured by dimensions ranging from several hundred micrometers to several millimeters, have garnered significant attention from both industry and academia. , The large specific surface area, good micromixing performance, and high mass/heat transfer efficiency make them versatile reactors for many fields, such as nanoparticle preparation, polymerization, and chemical synthesis. ,, However, the absence of external mechanical energy input in microreactors leads to underdeveloped turbulence and limited chaotic advection, consequently compromising micromixing efficiency. To address this limitation, researchers have introduced external forces such as ultrasonic vibration, , gas agitation, pressure pulses, magnetic fields, and the rotating flow field to intensify micromixing . Yang et al, Dong et al, and Zhang et al improved micromixing by introducing ultrasonic waves into microreactors.…”
Section: Introductionmentioning
confidence: 99%
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“…There have also been numerous studies of RTD in systems other than phase separators. These include for example, a miniaturized magnetic reactor (MMR) to intensify multiphase mixing at operational conditions of relatively large solution viscosity and flow rate ratio, using magnetic rotating force, 18 coiled flow inverter, 19 filter-press-type FM01-LC electrochemical cells, 20 different kinds of reactors such as laboratory reactors of small capacity at a different rotational speed of the impeller and feed flow rates for baffled and unbaffled arrangements, 21 multiphase monolith reactors, 22 and concurrent gas−liquid trickle bed reactor at various liquid phase velocities etc. 23 Different modeling approaches, such as the axial dispersion, piston-dispersion-exchange, etc.…”
Section: Introductionmentioning
confidence: 99%
“…Subsequently, we applied the GA to optimize the electrolytic voltage. In contrast to a comprehensive variable optimization, this method uses only 5 key features selected through the SHAP method as decision variables. It yielded results comparable to those of full-variable optimization while substantially improving time efficiency.…”
Section: Introductionmentioning
confidence: 99%