Experimental Setup for Understanding the Influence of Wall Contact of Structured Packing Material on Drop Sedimentation in Liquid–Liquid Systems

IF 3.9 3区 工程技术 Q2 ENGINEERING, CHEMICAL
Kristina Mielke, Philipp Ickenroth and Andreas Jupke*, 
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引用次数: 0

Abstract

To model liquid–liquid extraction columns (LLE-columns) accurately, correlations for occurring phenomena inside the columns (e.g., drop sedimentation) are necessary. Currently, existing correlations for the sedimentation velocity of drops in LLE-columns equipped with structured packings do not consider the interaction of the drops with different packing material surfaces or the complex geometry of those. Therefore, utilizing these correlations for designing these LLE-columns still exhibits high uncertainties, which commonly necessitate cost- and time-expensive experiments. To accelerate the efficiency of the design of these LLE-columns, we present a measuring cell in which single drop-wall interactions can be investigated. To quantify the drop-wall interaction, drop velocity, contact angle, and contact line can be measured optically while varying the counter-current flow, drop size, tilting angle, and surface material. The experimentally determined velocities are in accordance with sedimentation velocities in structured packings. Common correlations for sedimentation velocities in structured packings turned out not to be universally applicable.

结构填料壁接触对液-液体系中液滴沉降影响的实验研究
为了准确地模拟液液萃取柱(lle柱),必须对柱内发生的现象(例如滴沉降)进行相关性分析。目前,对于液滴在配置有结构填料的lle柱中沉降速度的现有关联,没有考虑液滴与不同填料表面或其复杂几何形状的相互作用。因此,利用这些相关性来设计这些lle列仍然具有很高的不确定性,这通常需要成本和时间昂贵的实验。为了加快这些lle柱的设计效率,我们提出了一种测量池,其中可以研究单滴壁相互作用。为了量化滴壁相互作用,可以在改变逆流流量、滴大小、倾斜角度和表面材料的情况下,用光学方法测量滴速、接触角和接触线。实验测定的速度与结构填料中的沉降速度一致。结构填料中沉降速度的一般相关性证明不是普遍适用的。
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来源期刊
Industrial & Engineering Chemistry Research
Industrial & Engineering Chemistry Research 工程技术-工程:化工
CiteScore
7.40
自引率
7.10%
发文量
1467
审稿时长
2.8 months
期刊介绍: ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.
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