Characterization and quantification of the quality of gas flow distributions

Stemich, Carsten; Spiegel, Lothar

doi:10.1016/j.cherd.2011.02.022

Cited by 11 publications

(6 citation statements)

References 5 publications

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“…Depending on the service, pressure drop can be a specification and must be minimised; in natural gas treatment, this would not be an issue, while for CO 2 post-combustion capture this would be critical. Gas flow simulations are quite easy to perform and can be used for gas distributing device testing and design (Mohamed Ali et al, 2003;Stemich and Spiegel, 2011;Raynal et al, 2013). Indeed, as can be seen from Figure 13, it is possible to evaluate the quality distribution at the packed bed inlet, downstream of the distributor, for different distributors.…”

Section: Gas Distributorsmentioning

confidence: 99%

“…In this context, CFD has become a very frequently used tool to improve the design of gasliquid distributors and to ensure the scale-up to industrial size. With this purpose, Stemich and Spiegel (2011) and Raynal et al (2013) showed how CFD can be used to evaluate the vapour velocity distribution at the entrance to the packed bed above the vapour feed, and define design rules. orifices and the influence of the lateral fluid velocity on the orifice coefficient in the liquid channel distributor tray.…”

Section: Absorber Internal Development Using Cfdmentioning

confidence: 99%

“…The absorption of gases in the liquid solution is often accompanied by chemical reactions. The distribution of the liquid and gas phases in packing is ensured by the use of gas-liquid tray distributors situated at the top of each packed bed and the bottom gas distributor at the bottom of the column (Billet, 1995;Kister, 1990;Olujic et al, 2004;Stemich and Spiegel, 2011).…”

Section: Introductionmentioning

confidence: 99%

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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: Gas Distributorsmentioning

confidence: 99%

Section: Absorber Internal Development Using Cfdmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…A lot of researches related to the mixing efficiency of CSTR reactor has been carried out recently [4]- [7]. Among these, there are numerous researches on the optimization of thee internal flow in accordance with the changes in the wide range of the impeller appearance-reactor configuration, and the appropriate changes in the wide range structures (baffle, draft tube, etc.)…”

Section: Introductionmentioning

confidence: 99%

“…Among these, there are numerous researches on the optimization of thee internal flow in accordance with the changes in the wide range of the impeller appearance-reactor configuration, and the appropriate changes in the wide range structures (baffle, draft tube, etc.) installed within the reactor that are being carried out [4].…”

Section: Introductionmentioning

confidence: 99%

Flow Analysis of the Environmental Chemical Reaction Processes at Power Plant in accordance with the Baffle Structure

Jeong¹,

Hur²,

Gil³

2016

KEPCO Journal on Electric Power and Energy

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In the area of environmental chemistry of power plant, flow analysis of the reactor with built-in impeller is a very important part from the perspective of the improvement of the efficiency of the entire process. As a wide range of methods are being proposed for the analysis of the flow pattern within the reactor, this study analyzed the flow within the reactor according to the baffle structure (height) installed on the internal wall of the reactor in order to improve the reaction efficiency through the inducing of the up and down stirring with the reactor. As the results of the execution of the flow analysis for each of a diverse range of cases by utilizing the Computational Fluid Dynamics (CFD) method, it was possible to confirm that the flow is markdely improved by inducing the up and down stirring among the reactants within the reactor if the baffle is elevated to the level below the water surface. In particular, as the results of the analysis of the general cases in which the baffle is elevated all 4 steps and the cases in which the baffle is elevated only 2 steps, elevating the baffle only 2 steps achieve the same effect as the elevating of the baffle by 4 steps. Therefore, it was possible to expect to improve the efficiency with out the need to increase the use of electric power substantially if the outcomes of this study is applied to the actual sites of power plants in the future.

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