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A novel observation platform for determining the micro-dispersion performance in practical reaction systems
Reaction Chemistry & Engineering ( IF 3.4 ) Pub Date : 2022-07-21 , DOI: 10.1039/d2re00224h Jing Song 1 , Chencan Du 1 , Junjie Wang 1 , Yongjin Cui 1 , Yujun Wang 1 , Jian Deng 1 , Guangsheng Luo 1
Reaction Chemistry & Engineering ( IF 3.4 ) Pub Date : 2022-07-21 , DOI: 10.1039/d2re00224h Jing Song 1 , Chencan Du 1 , Junjie Wang 1 , Yongjin Cui 1 , Yujun Wang 1 , Jian Deng 1 , Guangsheng Luo 1
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Microreaction technology provides a powerful tool for reactions under extreme conditions, but the micro-dispersion performance of those processes under real reaction conditions is hard to visualize. Therefore, we constructed a novel observation platform by placing the downstream observation window vertically. We successfully achieved the accurate measurement of droplets ranging in size from microns to millimeters for real reaction systems in a T-junction microdevice, and proved that the droplet coalescence can be avoided at the outlet of the microreactor. The actual micro-dispersion state of different types of systems can be exactly reflected in the observation window. We further investigated the effect of shearing routes on the droplet size in toluene nitration by using this platform and provided design guidance on the choice of shearing routes for nitration. The scaling laws under different shearing routes have been established based on the obtained micro-dispersion data in this work. This work has promoted the connection of fundamental research studies with real applications of microreaction technology, which is critical for the future development of microreaction technology.
中文翻译：
一种用于确定实际反应体系中微分散性能的新型观察平台
微反应技术为极端条件下的反应提供了强大的工具，但这些过程在真实反应条件下的微分散性能很难形象化。因此，我们通过垂直放置下游观察窗构建了一个新颖的观察平台。我们成功地实现了对T型结微器件中真实反应系统液滴尺寸从微米到毫米的精确测量，并证明可以避免微反应器出口处的液滴聚结。不同类型系统的实际微色散状态可以准确地反映在观察窗中。我们利用该平台进一步研究了剪切路径对甲苯硝化液滴尺寸的影响，并为硝化剪切路径的选择提供了设计指导。基于本工作获得的微弥散数据，建立了不同剪切路径下的比例定律。这项工作促进了基础研究与微反应技术实际应用的联系，这对微反应技术的未来发展至关重要。
更新日期：2022-07-21
中文翻译：
一种用于确定实际反应体系中微分散性能的新型观察平台
微反应技术为极端条件下的反应提供了强大的工具，但这些过程在真实反应条件下的微分散性能很难形象化。因此，我们通过垂直放置下游观察窗构建了一个新颖的观察平台。我们成功地实现了对T型结微器件中真实反应系统液滴尺寸从微米到毫米的精确测量，并证明可以避免微反应器出口处的液滴聚结。不同类型系统的实际微色散状态可以准确地反映在观察窗中。我们利用该平台进一步研究了剪切路径对甲苯硝化液滴尺寸的影响，并为硝化剪切路径的选择提供了设计指导。基于本工作获得的微弥散数据，建立了不同剪切路径下的比例定律。这项工作促进了基础研究与微反应技术实际应用的联系，这对微反应技术的未来发展至关重要。
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