A dimensionless model for predicting the mass‐transfer area of structured packing

Tsai, Robert E.; Seibert, A. Frank; Eldridge, R. Bruce; Rochelle, Gary T.

doi:10.1002/aic.12345

Cited by 140 publications

(103 citation statements)

References 38 publications

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“…In Figure 3, only the k-x SST low Reynolds model is used to determine pressure drop in M125X and M250X. The results are compared with the experimental data of Spiegel and Meier (1992) and Tsai et al (2011). The simulated pressure drop in the REU is found to be in good agreement with the experimental results of Spiegel and Meier (1992).…”

Section: Pressure Dropsupporting

confidence: 74%

“…The simulated pressure drop in the REU is found to be in good agreement with the experimental results of Spiegel and Meier (1992). However, less good agreement is observed with the results of Tsai et al (2011). This highlights the difficulty of the comparison exercise related to the fact that there are discrepancies in the literature data.…”

Section: Pressure Dropcontrasting

confidence: 49%

“…The results showed significant variations of the wetted area depending on the liquid-solid contact characteristics and liquid flow rate. The comparison between the CFD effective area and the experimental data of Tsai et al (2011) shows that the best agreement with experimental data is obtained with a static angle of c = 10°, the deviation being about 20%. For the liquid hold-up prediction, the authors obtain good agreement between CFD and literature modeling.…”

Section: Effective Area and Liquid Hold-upmentioning

confidence: 76%

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Use of Computational Fluid Dynamics for Absorption Packed Column Design

Haroun

Raynal

2015

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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-Computational Fluid Dynamics (CFD) is today commonly used in a wide variety of process industries and disciplines for the development of innovative technologies. The present article aims to show how CFD can be used as an effective analysis and design tool for the development and design of packed gas/liquid absorption columns. It is first shown how CFD can be used for the characterisation of packings. The different hydrodynamic and mass transfer design parameters are investigated and adapted CFD methods are suggested. Secondly, column distribution internal development is discussed to show how CFD simulations should be performed to improve the design of gas and liquid distributors. An example of the development of new distribution technologies for floating installation of a reactive absorption column is also presented.Résumé -Utilisation de la dynamique des fluides numérique pour le design des colonnes d'absorption à garnissages -La dynamique des fluides numérique (Computational Fluid Dynamics, CFD) est aujourd'hui couramment utilisée pour le développement de technologies innovantes dans de nombreux domaines et procédés industriels. Cet article a pour objectif de montrer comment la CFD peut être utilisée comme outil d'analyse et de dimensionnement pour le développement des colonnes d'absorption gaz-liquide à garnissages. En premier, il est présenté comment la CFD peut être utilisée pour caractériser les différents paramètres de dimensionnement d'un garnissage (hydrodynamique et transfert). Les méthodes CFD appropriées sont suggérées et discutées. En second, l'utilisation de la CFD pour le développement et l'optimisation des internes de distribution gaz-liquide est exposée. Un exemple de développement par CFD d'une nouvelle technologie de distribution pour une colonne d'absorption réactive sur une installation flottante offshore est présenté.

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Section: Pressure Dropsupporting

confidence: 74%

Section: Pressure Dropcontrasting

confidence: 49%

Section: Effective Area and Liquid Hold-upmentioning

confidence: 76%

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Use of Computational Fluid Dynamics for Absorption Packed Column Design

Haroun

Raynal

2015

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…For each liquid load data represented corresponds to an average value for the whole range of F S studied, this average is justified since almost no gas influence has been observed on the interfacial area for a constant liquid load. Tsai et al (2011) have noticed that the mass transfer area was most strongly related to specific area and liquid load; on the contrary, it was little dependent on the gas velocity, the surface tension or the liquid viscosity the latter being varied on the respective range of 30-72 mN/m and 1-15 mPa.s. Then, for the present study, physical properties impact has been neglected.…”

Section: Interfacial Area Measurementsmentioning

confidence: 95%

“…Superficial gas velocity, V SG , is 1.5 m/s corresponding to a F-Factor, F S , of 1.6 Pa 0.5 . Tsai et al (2008Tsai et al ( , 2011 and Tsai (2010) Spiegel and Meier (1992) (Spiegel and Meier, 1992) with respect to its validity at high liquid loads and compare their model with other previous published work.…”

Section: Litterature Reviewmentioning

confidence: 98%

Pressure Drop, Capacity and Mass Transfer Area Requirements for Post-Combustion Carbon Capture by Solvents

Lassauce

Alix

Raynal

et al. 2014

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Re´sume´-Pertes de charge, capacite´et aires de transfert de matie`re requises pour le captage du CO 2 en post-combustion par solvants -Les proce´de´s de captage en post-combustion utilisant des amines sont conside´re´s comme l'une des options pre´fe´re´es pour le captage et le stockage du CO 2 (CSC, CO 2 Capture and Storage). Cependant, le couˆt du CO 2 e´vite´est tre`s important et doit eˆtre re´duit. Ce couˆt est fortement lie´aux designs des colonnes, qui doivent, par conse´quent, eˆtre optimise´es. Dans cet article, les performances hydrodynamiques et le transfert de matie`re de garnissages vrac et structure´s sont discute´s en terme de perte de charge, de capacite´et, le plus important, en terme de coefficients de transfert de matie`re, notamment l'aire interfaciale, parame`tre le plus important pour la conception d'absorbeurs de CO 2 . La comparaison de diffe´rents garnissages commerciaux a`haute efficacite´est discute´e a`partir de caracte´risations expe´rimentales et de simulations CFD et une me´thodologie pour de futurs de´veloppements est propose´e.Abstract -Pressure Drop, Capacity and Mass Transfer Area Requirements for Post-Combustion Carbon Capture by Solvents -Post-combustion capture processes using amines are considered as one of the preferred options for CO 2 Capture and Storage (CCS). However, the cost of avoided CO 2 is very large and must be reduced. The latter cost is strongly linked with column designs which consequently must be optimized. In the present article, hydrodynamics and mass transfer performances of random and structured packings are discussed in terms of pressure drop, capacity and most importantly in terms of mass transfer parameters, in particular in terms of interfacial area which is the most important parameter for CO 2 absorbers design. Comparison of different commercial high efficiency packings is discussed from experimental characterization and from CFD simulations and a methodology for future developments is proposed.

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Absorption

Karayiannis

Laso

2018

Kirk-Othmer Encyclopedia of Chemical Technology

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Absorption, or gas absorption, is a unit operation used in the chemical industry to separate gases by washing or scrubbing a gas mixture with a suitable liquid. One or more of the gas components dissolves or is absorbed in the liquid and is thus removed from the mixture. Absorption is currently one of the most important processes in chemical engineering not only for product recovery but also, and perhaps mainly, for pollutant removal. Intense industrial and academic effort is focused on optimizing the process, in terms process efficiency as well as commercial aspects. In this article, the fundamental principles of gas solubility and mass transfer, design and operation of industrial equipment with relevant examples of typical commercial gas absorption processes are discussed, including recent developments in these areas.

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A dimensionless model for predicting the mass‐transfer area of structured packing

Cited by 140 publications

References 38 publications

Use of Computational Fluid Dynamics for Absorption Packed Column Design

Use of Computational Fluid Dynamics for Absorption Packed Column Design

Pressure Drop, Capacity and Mass Transfer Area Requirements for Post-Combustion Carbon Capture by Solvents

Absorption

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