Scale‐up von Destillationskolonnen

Eiden, Ulrich; Kaiser, R.; Schuch, Gunter; Wolf, D.

doi:10.1002/cite.330670303

Cited by 15 publications

(13 citation statements)

References 9 publications

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“…The advantage of this procedure is that as long as the laboratory packings are carefully calibrated with test mixtures its type can be selected freely and does not depend on the actual packing used in the production column. In the first approximation, even different surface phenomena do not pose problems here 6 …”

Section: Introductionmentioning

confidence: 97%

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Flexible distillation test rig on a laboratory scale for characterization of additively manufactured packings

et al. 2021

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Additive manufacturing is increasingly being used to develop innovative packings for absorption and desorption columns. Since distillation has not been in focus so far, this article aims to fill this gap. The objective is to obtain a miniaturized three dimensional (3D) printed packed column with optimized properties in terms of scalability and reproducibility, which increases process development efficiency. For this purpose, a flexible laboratory scale test rig is presented combining standard laboratory equipment with 3D printed components such as innovative multifunctional trays or the column wall with packing. The test rig offers a particularly wide operating range F ¼ 0:15Pa 0:5 …1:0Pa 0:5 for column diameters between 2 and 50mm. First results regarding the time to reach steady-state, operational stability, and separation efficiency measurements are presented using a 3D printable version of the Rombopak 9M. Currently, further developed and newly designed packing structures are being characterized, which should exhibit optimized properties especially with respect to scalability and separation efficiency.

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Section: Introductionmentioning

confidence: 97%

“…In the first approximation, even different surface phenomena do not pose problems here. 6 For this procedure to work properly, the laboratory column should have a number of important characteristics in terms of scalability. The separation efficiency of the packing should depend only slightly on the operation point of the column.…”

Section: Introductionmentioning

confidence: 99%

Flexible distillation test rig on a laboratory scale for characterization of additively manufactured packings

et al. 2021

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“…2 This diameter is on the order of roughly 50 mm. 2 Further reduction in size leads to two issues: First, due to the larger wall-tovolume ratio compared to that of a column with larger diameter, the laboratory-scale experimental data are skewed by liquid misdistribution and thermal losses. 1 As a result, the separation efficiency is strongly dependent on the vapor load, which causes varying results with conventional packings.…”

Section: Introductionmentioning

confidence: 99%

Wettability Prediction for 3D-Printed Surfaces Using Reverse Engineering and Computational Fluid Dynamics Simulations

Mathlouthi¹,

Kügele²,

Elsayed

et al. 2023

Ind. Eng. Chem. Res.

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Additive manufacturing (3D printing) is a promising approach to creating packings for laboratory-scale distillation columns. Current research focuses on experiments and simulations to tailor packing geometry regarding performance (e.g., pressure drop, fluid distribution). These performance benchmarks are, in large part, dependent on the wettability of the manufactured surface. Research shows that the 3D-printing process settings affect wetting significantly. This effect must be quantified to accurately assess the effectiveness of printed packing geometry. Due to the interdependence of wetting, surface roughness, and involved substances, the required experimental effort is not feasible. Sessile drop experiments show that analytical models underpredict the resulting wettability. In this study, a novel method to address this issue is introduced. The rough surface of a printed sample is reverse-engineered, and CFD simulations are performed to predict the static contact angle. The results show agreement between the computational model and experimental investigations.

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“…However, a certain level of scale-up uncertainty is unavoidable [3]. Various sources recommend a lower limit for test column diameters d c from 40 to 100 mm [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Flexible 3D‐Printed Test Rig for Liquid Distribution Characterization of Laboratory‐Scale Packings

Ashour

Neukäufer

Sarajlic

et al. 2022

Chemie Ingenieur Technik

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In distillation, additive manufacturing can facilitate the design and fabrication of laboratory‐scale packed columns that overcome the existing miniaturization limits while maintaining scalability. Liquid distribution is one of the appraisal criteria for new packing structures. For this purpose, a flexible 3D‐printed laboratory test rig is presented. The setup offers a wide liquid load operation range from approx. 2.5 to 20 m3m−2h−1 for column diameters of 20–50 mm. First results regarding steady‐state development, initial liquid distribution effect and liquid load variation are shown using a 3D‐printed version of the Rombopak 9M in a 20‐mm diameter column.

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Scale‐up von Destillationskolonnen

Cited by 15 publications

References 9 publications

Flexible distillation test rig on a laboratory scale for characterization of additively manufactured packings

Flexible distillation test rig on a laboratory scale for characterization of additively manufactured packings

Wettability Prediction for 3D-Printed Surfaces Using Reverse Engineering and Computational Fluid Dynamics Simulations

Flexible 3D‐Printed Test Rig for Liquid Distribution Characterization of Laboratory‐Scale Packings

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