Basic separation efficiency and hydraulic data of MellapakPlus 452.Y structured packing under distillation conditions

Čmelíková, Tereza; Valenz, L.; Vachková, Eliška Lyko; Rejl, F.J.

doi:10.1016/j.cherd.2021.05.026

Cited by 6 publications

(4 citation statements)

References 19 publications

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“…Sheet metal structured packing ⟨HETP⟩ values for binary systems measured at total reflux are surprisingly well-described by simple expressions like the correlation of Harrison and France and Kister for “Y” style structured packings. − Those relationships between ⟨HETP⟩ and dry packing surface area per unit volume have been found to predict ⟨HETP⟩ values to within ±30% on average regardless of system, column pressure, and details of the surface topology of the packing. Other slightly more complex rules yield ⟨HETP⟩ estimates with somewhat improved levels of uncertainty. − Cmelíková et al discuss the aforementioned findings in-depth Figure is a parity plot of the Carillo and Harrison and France estimating rules applied to our data set. , …”

Section: Introductionmentioning

confidence: 69%

“…12−14 Cmeli ́kováet al discuss the aforementioned findings in-depth. 15 Figure 1 is a parity plot of the Carillo and Harrison and France estimating rules applied to our data set. 11,13 Mass transfer correlations for structured packings based on the two-resistance concept, usually coupled with some appeal to penetration theory, the Chilton-Colburn analogy, or surface renewal theory, often outperform the rules-of-thumb described above for specific systems and packing sizes but usually perform relatively poorly when used outside of their original correlating data sets.…”

Section: ■ Introductionmentioning

confidence: 99%

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Progress Toward a Comprehensive Model for Mass Transfer in Structured Packings

Wilfert

Hanley

2023

Ind. Eng. Chem. Res.

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Significant effort has been devoted to the study of mass transfer in sheet metal structured packings over the past half century. A number of mass transfer correlations have appeared in the literature as a result of those efforts. Unfortunately, none of these correlations has shown itself to be reliable over the full range of chemical systems, column operating conditions, and packing topologies encountered today. In an attempt to rectify some of the shortcomings of earlier correlations for sheet metal structured packings, we have employed a new data analysis methodology which simultaneously fits ⟨HETP⟩ data and mass transfer area data. The correlation we report upon here includes 444 ⟨HETP⟩ values from a variety of systems, operating pressures, and packing designs, along with 409 mass transfer area measurements. We demonstrate that this correlation outperforms all others while remaining simple enough to implement in process simulation software.

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Section: Introductionmentioning

confidence: 69%

Section: ■ Introductionmentioning

confidence: 99%

Progress Toward a Comprehensive Model for Mass Transfer in Structured Packings

Wilfert

Hanley

2023

Ind. Eng. Chem. Res.

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“…The distillation plant is operated with the standard test mixture n ‐heptane/cyclohexane. Due to the dependency of the height equivalent to a theoretical plate (

HETP

) on the stripping factor

λ

, different measurements of different packings at different concentration ranges cannot be adequately compared 38 . The use of the height of a transfer unit (

{italicHTU}_{OG}

) solves this problem as it is independent of the considered concentration range and the stripping factor.…”

Section: Methodology For the Development And Enhancement Of Miniaturi...mentioning

confidence: 99%

Development of enhanced three‐dimensional printed packings for scale‐up of distillation columns: A successful case study

et al. 2022

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This publication presents a general approach for the enhancement of packings regarding scalability, separation efficiency, and fluid dynamic properties using threedimensional (3D) printing. The methodology is used to develop miniaturized, scalable packings for process development, and scale-up applications. For this purpose, a 3D printable computer-aided design version of the Rombopak 9M industrial packing (RP9M-3D), which is known for its positive scalability properties, was created. An initial characterization by means of computational fluid dynamics simulations and mass transfer measurements reveals positive but also negative design properties. These findings are used to create a more advanced, miniaturized packing structure, the XW-Pak. The evolved structure is compared to the RP9M-3D. The simulation and experimental results show that the enhanced packing, which is still in the early stages of development, exhibits higher separation efficiencies with improved scalability properties at the same void fraction and surface area than the RP9M-3D.

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“…[11][12][13] Cmelíková, et al, discuss the aforementioned findings in depth. 14 Figure 1 is a parity plot of the Carillo and Harrison and France estimating rules applied to our dataset. 10,12 Mass transfer correlations for structured packings based on the two-resistance concept, usually coupled with some appeal to penetration theory, the Chilton-Colburn analogy, or surface renewal theory, often outperform the rules-of-thumb described above for specific systems and packing sizes, but usually perform relatively poorly when used outside of their original correlating datasets.…”

Section: Introductionmentioning

confidence: 99%

Progress Towards a Comprehensive Model for Mass Transfer in Structured Packings

Hanley

Wilfert

2023

Preprint

View full text Add to dashboard Cite

Significant effort has been devoted to the study of mass transfer in sheet metal structured packings over the past half century. A number of mass transfer correlations have appeared in the literature as a result of those efforts. Unfortunately no one of these correlations has shown itself to be reliable over the full range of chemical systems, column operating conditions, and packing topologies encountered today. In an attempt to rectify some of the shortcomings of earlier correlations for sheet metal structured packings we have employed a new data analysis methodology which simultaneously fits 〈HETP〉 data and mass transfer area data. The correlation we report upon here includes 444 〈HETP〉 values from a variety of systems, operating pressures, and packing designs, along with 409 mass transfer area measurements. We demonstrate that this correlation outperforms all others while remaining simple enough to implement in process simulation software.

show abstract

Basic separation efficiency and hydraulic data of MellapakPlus 452.Y structured packing under distillation conditions

Cited by 6 publications

References 19 publications

Progress Toward a Comprehensive Model for Mass Transfer in Structured Packings

Progress Toward a Comprehensive Model for Mass Transfer in Structured Packings

Development of enhanced three‐dimensional printed packings for scale‐up of distillation columns: A successful case study

Progress Towards a Comprehensive Model for Mass Transfer in Structured Packings

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