反应性气泡流中的小尺度现象:实验、数值模拟和应用。

IF 7.6 2区 工程技术 Q1 CHEMISTRY, APPLIED
Michael Schlüter, Sonja Herres-Pawlis, Ulrich Nieken, Ute Tuttlies, Dieter Bothe
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引用次数: 7

摘要

提高化学反应的收率和选择性是为更可持续和气候友好型经济铺平道路的一项具有挑战性的任务。对于工业上高度相关的气液反应,这可以通过根据反应的要求调整混合的时间尺度来实现。虽然这早已为理想反应器和时间和空间平均过程所知,但最近在局部混合过程的影响方面取得了相当大的进展。通过化学家、数学家和工程师的共同研究,这一进展成为可能。我们介绍了已开发的具有可调动力学的反应体系,这些反应体系易于处理和分析。我们展示了如何通过局部气泡尾流结构控制竞争性连续反应的选择性的例子。这在技术条件下对泰勒气泡和气泡流进行了论证。高分辨率的数值模拟证实了气泡尾流结构对特定化学反应性能的重要性,并指出了未来工艺改进的巨大潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Small-Scale Phenomena in Reactive Bubbly Flows: Experiments, Numerical Modeling, and Applications.

Improving the yield and selectivity of chemical reactions is one of the challenging tasks in paving the way for a more sustainable and climate-friendly economy. For the industrially highly relevant gas-liquid reactions, this can be achieved by tailoring the timescales of mixing to the requirements of the reaction. Although this has long been known for idealized reactors and time- and space-averaged processes, considerable progress has been made recently on the influence of local mixing processes. This progress has become possible through joint research between chemists, mathematicians, and engineers. We present the reaction systems with adjustable kinetics that have been developed, which are easy to handle and analyze. We show examples of how the selectivity of competitive-consecutive reactions can be controlled via local bubble wake structures. This is demonstrated for Taylor bubbles and bubbly flows under technical conditions. Highly resolvednumerical simulations confirm the importance of the bubble wake structure for the performance of a particular chemical reaction and indicate tremendous potential for future process improvements.

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来源期刊
Annual review of chemical and biomolecular engineering
Annual review of chemical and biomolecular engineering CHEMISTRY, APPLIED-ENGINEERING, CHEMICAL
CiteScore
16.00
自引率
0.00%
发文量
25
期刊介绍: The Annual Review of Chemical and Biomolecular Engineering aims to provide a perspective on the broad field of chemical (and related) engineering. The journal draws from disciplines as diverse as biology, physics, and engineering, with development of chemical products and processes as the unifying theme.
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