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Actively homogenizing fluid distribution and slug length of liquid-liquid segmented flow in parallelized microchannels
Chemical Engineering and Processing: Process Intensification ( IF 4.3 ) Pub Date : 2020-08-17 , DOI: 10.1016/j.cep.2020.108061
Linda Arsenjuk , Niclas von Vietinghoff , Anoj Winston Gladius , David W. Agar

Liquid-liquid segmented flow offers the unique characteristics of high heat and mass transfer combined with a narrow residence time distribution and thus shows great potential in process intensification of biphasic applications. Capacity increase of this technology can only be achieved by numbering-up, if scale-related advantages are to be preserved. This implies homogeneous residence times and volume flows in all parallel channels. Conventionally this is achieved by static fluid distribution concepts with high pressure drops. This contribution develops a microfluidic valve based on temperature-controlled viscosity adjustments. It can be used to actively compensate for manufacturing tolerances in parallelized micro reactors and thus requires a lower pressure drop than static distribution concepts to achieve a homogeneous fluid distribution. The distributor concept is combined with sensors and actuators for flow patterns and an automated parallelization concept for homogenizing flow patterns of liquid-liquid slug flows in micro channels is presented.



中文翻译:

在平行微通道中主动均化流体分布和液-液分段流的段塞长度

液-液分段流动具有独特的高热量和质量传递特性,同时具有狭窄的停留时间分布,因此在两相应用的工艺强化中显示出巨大的潜力。如果要保留与规模相关的优势,则只能通过编号来实现该技术的容量增加。这意味着在所有平行通道中均质的停留时间和体积流量。按照惯例,这是通过具有高压降的静态流体分配概念来实现的。这种贡献开发了基于温度控制的粘度调节的微流体阀。它可用于主动补偿并联微型反应器中的制造公差,因此,与静态分配方案相比,它需要更低的压降才能实现均匀的流体分配。

更新日期:2020-08-17
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