posted on 2024-01-08, 17:38authored byZhiliang Zhang, Hui Xue, Wei Liu, Weiling Zhao, Zhaoyang Chen, Qiao Chen, Dongting Wang, Jianbing Ji
Microchannel
reactors have garnered significant attention in various
chemical processes due to their ability to achieve rapid mixing. However,
there remains ample opportunity for the development of microchannel
reactors with simple structures and high throughput. In this work,
we propose a novel microannular rotating bed (MARB) that integrates
the high-gravity field and microscale effect to enhance the micromixing
efficiency. The Villermaux–Dushman reaction system is employed
to investigate the influence of the operating parameters on the mixing
performance. The micromixing time of the MARB ranges from 10–4 to 10–3 s for low-viscosity Newtonian fluids and
from 10–4 to 10–2 s for shear-thinning
non-Newtonian fluids. In a lab-scale setup, the MARB demonstrates
a throughput of 6 L/min, markedly surpassing the capabilities of the
existing microchannel reactors. Furthermore, the evaluation of energy
dissipation rate underscores the MARB’s remarkable energetic
efficiency in intensifying mixing processes. The MARB, with its simple
design, high throughput capacity, and efficiency, presents a promising
alternative for the intensification of mixing across diverse chemical
applications.