Micromixing intensification by gas introduction in a miniaturized annular rotating flow mixer (MARFM)

Micromixing in a Novel Microannular Rotating Bed

“…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.…”

“…The generation and subsequent collapse of microbubbles induced by ultrasound produced microjets and microstreams, which can effectively enhance the micromixing efficiency. Su et al, Chen et al, and Zhang et al utilized gas agitation to intensify mass transfer and micromixing. Li et al designed a water-head-driven micro-oscillator to achieve pulsatile pressure and rapid mixing.…”