Relevant bibliographies by topics / Gas Absorption in Liquids

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Academic literature on the topic 'Gas Absorption in Liquids'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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Journal articles on the topic "Gas Absorption in Liquids"

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Shunmugavel, Saravanamurugan, So̸ren Kegnæs, Johannes Due-Hansen, Thorey Gretasdottir, Anders Riisager, and Rasmus Fehrmann. "Selective Gas Absorption by Ionic Liquids." ECS Transactions 33, no. 7 (December 17, 2019): 117–26. http://dx.doi.org/10.1149/1.3484768.

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Li, Xiaoshan, Liqi Zhang, Ying Zheng, and Chuguang Zheng. "ICOPE-15-C085 Absorption behavior of CO_2/SO_2 in flue gas by ionic liquids." Proceedings of the International Conference on Power Engineering (ICOPE) 2015.12 (2015): _ICOPE—15——_ICOPE—15—. http://dx.doi.org/10.1299/jsmeicope.2015.12._icope-15-_166.

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Wu, Guoqing, Ying Liu, Guangliang Liu, and Xiaoying Pang. "The CO2 Absorption in Flue Gas Using Mixed Ionic Liquids." Molecules 25, no. 5 (February 25, 2020): 1034. http://dx.doi.org/10.3390/molecules25051034.

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Because of the appealing properties, ionic liquids (ILs) are believed to be promising alternatives for the CO2 absorption in the flue gas. Several ILs, such as [NH2emim][BF4], [C4mim][OAc], and [NH2emim[OAc], have been used to capture CO2 of the simulated flue gas in this work. The structural changes of the ILs before and after absorption were also investigated by quantum chemical methods, FTIR, and NMR technologies. However, the experimental results and theoretical calculation showed that the flue gas component SO2 would significantly weaken the CO2 absorption performance of the ILs. SO2 was more likely to react with the active sites of the ILs than CO2. To improve the absorption capacity, the ionic liquid (IL) mixture [C4mim][OAc]/ [NH2emim][BF4] were employed for the CO2 absorption of the flue gas. It is found that the CO2 absorption capacity would be increased by about 25%, even in the presence of SO2. The calculation results suggested that CO2 could not compete with SO2 for reacting with the IL during the absorption process. Nevertheless, SO2 might be first captured by the [NH2emim][BF4] of the IL mixture, and then the [C4mim][OAc] ionic liquid could absorb more CO2 without the interference of SO2.
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Sun, Zhi Min, and Bing Li. "Research on Synthesis, Characterization and CO2 Absorption of Functional Room Temperature Ionic Liquids." Materials Science Forum 984 (April 2020): 189–94. http://dx.doi.org/10.4028/www.scientific.net/msf.984.189.

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Iron and steel making is an industry with high energy consumption and greenhouse gas emissions. The work is to carry out the CO2 capture experimental study as background of the blast furnace gas, increase the calorific value of the blast furnace gas and reduce greenhouse gas emissions and the energy consumption of CO2 gas in the follow-up process cycle. In this paper, according to the principle of acid base neutralization, [EDA]L and [EDA]P contained amino ionic liquids are synthesized in ice water bath condition, which is made from lactic acid, formic acid and ethylenediamine. The synthesis process was explored, the viscosity and infrared spectroscopy of synthetic ionic liquid were characterized, the boiling point of ionic liquids were calculated, CO2 absorption experiments were carried out under normal temperature and pressure. The results indicate that the compositions are ionic liquids having target structures and the maximum molar absorption of ionic liquid to CO2 reaches 0.45 mol.
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Sobieszuk, Paweł, and Maciej Pilarek. "Absorption of Co2 into Perfluorinated Gas Carrier in the Taylor Gas–Liquid Flow in a Microchannel System." Chemical and Process Engineering 33, no. 4 (December 1, 2012): 595–602. http://dx.doi.org/10.2478/v10176-012-0049-3.

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The aim of this study was to determine the solubility of CO2 in perfluorodecalin (PFD) which is frequently used as efficient liquid carrier of respiratory gases in bioprocess engineering. The application of perfluorinated liquid in a microsystem has been presented. Gas-liquid mass transfer during Taylor (slug) flow in a microchannel of circular cross section 0.4 mm in diameter has been investigated. A physicochemical system of the absorption of CO2 from the CO2/N2 mixture in perfluorodecalin has been applied. The Henry’s law constants have been found according to two theoretical approaches: physical (H = 1.22·10-3 mol/m3Pa) or chemical (H = 1.26·10-3 mol/m3Pa) absorption. We are hypothesising that the gas-liquid microchannel system is applicable to determine the solubility of respiratory gases in perfluorinated liquids.
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Doroshenko, Irina, Valeriy Pogorelov, and Valdas Sablinskas. "Infrared Absorption Spectra of Monohydric Alcohols." Dataset Papers in Chemistry 2013 (October 24, 2013): 1–6. http://dx.doi.org/10.7167/2013/329406.

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FTIR spectra of homologous series of monohydric alcohols which belong to the class of partly ordered liquids were registered. The molecules of monohydric alcohols containing hydroxyl group are able to form hydrogen-bonded clusters in the condensed phase. The existence of clusters is clearly observed from the position and the contour of the stretch OH band in the vibrational spectra of liquid alcohols. In this work, the experimentally registered FTIR spectra of liquid n-alcohols from methanol to decanol are presented as well as the same spectra of methanol, ethanol, propanol, butanol, pentanol, and hexanol in gas phase.
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Kolding, H., P. Thomassen, S. Mossin, S. Kegnaes, A. Riisager, J. Rogez, G. Mikaelian, and R. Fehrmann. "(Invited) Absorption of Flue-Gas Components by Ionic Liquids." ECS Transactions 64, no. 4 (August 15, 2014): 97–108. http://dx.doi.org/10.1149/06404.0097ecst.

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Avila, Jocasta, Ctirad Červinka, Pierre‐Yves Dugas, Agílio A. H. Pádua, and Margarida Costa Gomes. "Porous Ionic Liquids: Structure, Stability, and Gas Absorption Mechanisms." Advanced Materials Interfaces 8, no. 9 (March 15, 2021): 2001982. http://dx.doi.org/10.1002/admi.202001982.

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Vičkačkaitė, Vida, and Audrius Padarauskas. "Ionic liquids in microextraction techniques." Open Chemistry 10, no. 3 (June 1, 2012): 652–74. http://dx.doi.org/10.2478/s11532-012-0023-4.

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AbstractThe tremendous potential of room temperature ionic liquids as an alternative to environmentally harmful ordinary organic solvents is well recognized. Due to their unique properties, such as low volatility, tunable viscosity and miscibility, and electrolytic conductivity, ionic liquids have attracted extensive attention and gained popularity in many areas of analytical chemistry including modern sample preparation techniques. In this review the advantages and limitations of application of ionic liquids as solvents/sorbents for microextraction are critically discussed. Topics covered include solid-phase microextraction, single drop microextraction, dispersive liquid-liquid microextraction and hollow-fiber liquid-phase microextraction. The compatibility of the ionic liquid-based microextraction with different analytical techniques such as gas chromatography, high-performance liquid chromatography, electrothermal or flame atomic absorption spectrometry and some others is also discussed. Finally, the main practical applications on this topic are summarized.
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KANAKUBO, Mitsuhiro, and Takashi MAKINO. "Gas Absorption Properties of Ionic Liquids and its Applications to Gas Separation Technology." Journal of the Surface Finishing Society of Japan 67, no. 2 (2016): 90–95. http://dx.doi.org/10.4139/sfj.67.90.

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Dissertations / Theses on the topic "Gas Absorption in Liquids"

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Yan, Xueru. "Development of a hybrid process, Membrane-Ionic Liquid (ILM), for gas treatment Ionic liquids combined wtih membrane separation processes : A review." Thesis, Ecole centrale de Marseille, 2020. http://www.theses.fr/2020ECDM0009.

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L'élimination des polluants d'un mélange gazeux est un enjeu majeur en termes de réduction de l'impact environnemental de nombreux procédés industriels. Les liquides ioniques sont des solvants de remplacement prometteurs pour les composés organiques traditionnels utilisés dans la séparation sélective en raison de leur pression de vapeur négligeable et de leurs propriétés chimico-physiques concevables. Dans cette étude, un nouveau concept, la combinaison des IL et d'une membrane céramique tubulaire (ILM), a été développé dans le but de séparer les gaz ou les liquides des flux d'alimentation. Par rapport aux procédés classiques d'élimination des gaz ou des liquides, les ILM offrent une grande stabilité et une résistance mécanique élevée pendant une longue période de fonctionnement. Dans le cas des traitements de gaz, l'élimination de l'humidité pour protéger le capteur de gaz et le traitement du gaz industriel contenant du toluène sont les deux parties développées dans ce manuscrit. Les effets de plusieurs paramètres de fonctionnement, notamment le débit de gaz, la température, la pression, la concentration d'alimentation, la surface effective de la membrane (longueur de la membrane de support) et la position des canaux de gaz, ont été étudiés à la fois sur l'élimination de l'humidité et du toluène (vapeur). En outre, un modèle mathématique en deux étapes a été utilisé pour simuler les résultats expérimentaux et évaluer la performance de séparation des MIL dans les conditions de fonctionnement proposées. Selon les résultats expérimentaux et simulés, les ILM présentaient une capacité d'absorption relativement élevée de l'humidité et du toluène. Ce nouveau procédé ILM sera le procédé vert dominant pour la séparation des polluants gazeux ou liquides
The removal of pollutants from a gas mixture is a major issue in terms of minimizing the environment impact of numerous industrial processes. Ionic liquids are promising alternative solvents for traditional organic compounds using in selective separation due to their negligible vapor pressure and designable chemic-physical properties. In this study, a new concept, combination of ILs and a tubular ceramic membrane (ILM), has been developed with the aim of gas or liquid separation from feed streams. Comparing to conventional gas or liquid removal processes, ILMs provide high stability and mechanical resistance during long-time operation. Moreover, specific properties of ILs ensure selectivity and absorption capacity of ILMs. In the case of gas treatments, removal of humidity to protect gas sensor and treatment of industrial gas containing toluene are the two parts developed in this manuscript. Effects of several operating parameters, including gas flow rate, temperature, pressure, feed concentration, effective surface area of membrane (length of the support membrane) and position of gas channels, were investigated both on humidity and toluene (vapor) removal. In addition, a two-step model was used to simulate experimental results and evaluate the separation performance of ILMs. According to both experimental and simulated results, ILMs exhibited relative high absorption capacity of humidity and toluene. This new ILM process will be the dominating green processes for gas or liquid pollutants separation
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Cooke, Jason. "Modelling of reactive absorption in gas-liquid flows on structured packing." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/397079/.

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Carbon capture & storage (CCS) is at the technological forefront in the challenge of reducing carbon emissions. The most viable approach to implementing CCS within existing coal and natural gas power stations is the post-combustion capture of CO2 by absorption into amine solutions within packed column absorbers. CFD modelling is an important aspect in the design and optimisation of this process. However, significant challenges arise due to the large range of spatial scales and the complexity of the physics being modelled. Therefore, simplification of the problem is required to complete such simulations using the computational resources currently available. This thesis explores some of the approaches used to model flow within packed columns. It concludes that, with current computing resources, standard modelling approaches are not viable for large scale simulations of CCS. This led to the development of the Enhanced Surface Film (ESF) model. The ESF approach was able to simulate chemically enhanced absorption of gaseous species into thin liquid films. The method significantly reduced the computational resources required and is a significant step to enable future researchers to model larger domains in CCS. The ESF approach has wide ranging applications due to the ubiquitous nature of liquid films across the industrial and environmental sectors. In many industries the dynamics of thin liquid films play a crucial role in the overall performance. Further applications may include thin film microreactors, surface coating, biofluids and medical applications.
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Zea, Luis. "EXPERIMENTAL ANALYSIS OF THE HYDROGEN SULFIDE ABSORTION PHENOMENA IN BRINE/OIL MIXTURES AS A FUNCTION OF SYSTEM PRESSURE AND H2S." Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3053.

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In underground oil reservoirs, Hydrogen sulfide is usually found coexisting with the oil due to bacteria reduction over a long period of time. The amount of H2S in the oil varies from place to place around the globe. When the oil extraction process begins, the presence of Hydrogen sulfide becomes noticeable as drilling tools, piping and other equipment suffer from sulfide stress cracking, electrochemical corrosion and corrosion fatigue. For this reason, the oil industry invests millions of dollars per year trying to find better ways to reduce the amount of H2S in oil. An important part of the current investigations deals with brine (sea water)/oil mixtures. The reasons are two-fold: 1) one way of extracting the petroleum from the reservoir is by injecting brine into it and since it has a higher density than oil, the latter will be ejected up to the surface. Taking into account the complex fluid flow occurring within the reservoir it is easy to understand that some brine will also be present as part of the ejected fluid; 2) brine is already present in the reservoir, so independent of the extraction method used, there will be a brine/oil mixture in the ejected flow. When brine and oil have absorbed H2S under pressure in the reservoir and then suffer a decompression during the extraction process, a certain amount of H2S is released from the liquid phase. In order to have a better prediction of how much Hydrogen sulfide can be liberated a good understanding of H2S absorption by these liquids is necessary. The amount of gas a solvent absorbs is a function of pressure, original gas concentration and temperature as described by Henry's Law. The purpose of this thesis is to experimentally analyze how much of the corrosive gas is absorbed into different brine/oil mixtures, and brine and oil, separately. In order to find sufficient data for a thorough analysis, different reservoir simulation scenarios were created. The liquids were mixed from pure brine to pure oil, resulting in 33% and 66% water cuts. Data were obtained at 2 pressures of 20atm and 70atm at room temperature. H2S concentration was also a variable, changing the original gas concentration through different values: 50, 100, and 300ppm. These experiments were conducted in an autoclave system and will better explain the hydrostatic process that occurs inside the reservoir. It was found that throughout all the water cuts, the role that total pressure plays in the absorption phenomena is of less importance as the original H2S concentration is increased. In the same manner it was observed that the highest mass-absorption ratios are always found between 50 and 100ppm and the lowest at 300ppm, this is observed for all water cuts and total pressures. Another important finding was that the ability to absorb the corrosive gas decreases as the original H2S concentration increases and this proves to be true for all water cuts and system pressures. After conducting these different reservoir scenarios, tests were conducted to simulate 300m of the horizontal section of the pipe that connects the head of the well with the platform. This was done with a high pressure 300-meter long loop. It was found that the corrosive gas is absorbed at a higher rate when there is a flow, opposite to a hydrostatic case. Henry's Law constant was identified for each water cut and each pressure, however, the test procedure could not be validated since the gas being studied was not in its pure form. Understanding the absorption phenomena of Hydrogen sulfide in different water cuts will definitely be of great help to the oil industry to make better forecasts of H2S concentrations being ejected from each well.
M.S.
Department of Mechanical, Materials and Aerospace Engineering
Engineering and Computer Science
Aerospace Engineering MSAE
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Nicholls, M. P. "Development and performance characterisation of a novel gas-liquid contacting stage." Thesis, University of London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313507.

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Shalygin, Maxim. "Réalisation et caractérisation du transport sélectif gazeux de contacteurs gaz-liquide à membrane (Selective transport of gases in gas-liquid membrane system)." Thesis, Vandoeuvre-les-Nancy, INPL, 2007. http://www.theses.fr/2007INPL022N/document.

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Ce travail rapporte l’étude de systèmes membranaires à valves sélectives (SMV), qui combinent les avantages des techniques de séparation par membrane et par absorption. La 1ère partie du mémoire présente l'étude du transport de matière en régime permanent et transitoire dans les SMV élaborés à partir de membranes polymères denses et de solution aqueuses. Dans la 2ème partie le développement d'un modèle mathématique original pour la simulation des SMV est proposé ainsi que son évaluation expérimentale pour les séparations CO2/CH4/H2, avec des solutions aqueuses confinées de K2CO3. Des améliorations simultanées de la perméabilité (˜ 4 fois) et de la sélectivité (>20 fois) ont été obtenues pour CO2 avec le mélange CO2/H2. Un logiciel basé sur un nouveau modèle de transport de gaz dans ces contacteurs membranaires prenant en compte la sorption physique et chimique dans la phase liquide a été développé pour le calcul de la perméabilité en régime transitoire ou permanent
Combined gas-liquid membrane systems gather the advantages of membrane and absorption separation techniques. Specifically, selective membrane valves (SMV called flowing liquid membranes) were studied, i.e. creation, gas transport experiments, liquid nature and temperature dependences, and modelling. SMV use a flowing layer of liquid supported between two membranes. The 1st part of the dissertation reports the study of steady and non-steady state gas transports in SMV built out dense polymeric membranes. In the 2nd part is given the development of an original mathematical model for SMV simulation and its experimental assessment for CO2/CH4/H2 mixtures with aqueous solutions of K2CO3. From systematic studies of steady and non-steady state processes, both in flow-through and circulating modes, it was found that increasing of temperature and liquid carrier concentration (K2CO3) leads to the simultaneous rise of permeability and selectivity during CO2 recovery from CO2/H2 mixture
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Moura, Leila. "Liquides ioniques pour la séparation des d'hydrocarbures gazeux." Phd thesis, Université Claude Bernard - Lyon I, 2014. http://tel.archives-ouvertes.fr/tel-01064777.

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L'objectif de ces travaux était de synthétiser, caractériser et étudier le potentiel d'une sélection de liquides ioniques, pour la séparation de l'éthane et de l'éthène. L'influence dans l'absorption de l'éthène de la présence de trois cations métalliques, le lithium (I), le nickel (II) et le cuivre (II) dans un liquide ionique était également étudiée. Les liquides ioniques sélectionnés sont basés sur le cation imidazolium contenant des groupes fonctionnels au niveau de la chaine alkyle latérale. Les anions choisis sont le bis(trifluorométhylsulfonyl)imide, [NTf2], la dicyanamide, [DCA] et le méthylphosphite, [C1HPO3]. Sachant qu'un solvant de séparation idéale doit avoir une capacité d'absorption et une sélectivité de séparation élevées, une faible viscosité, une haute stabilité thermique et une cinétique d'absorption rapide pour le gaz sélectionné. Pour évaluer ces propriétés pour les milieux sélectionnés, plusieurs paramètres ont été déterminés la densité et la viscosité des liquides ioniques ainsi que l'absorption de chaque gaz dans les liquides ioniques. L'absorption de l'éthane et de l'éthène dans les liquides ioniques purs ainsi que dans les solutions de liquide ionique + sel métallique a été mesurée dans une gamme de températures comprises entre 303.15 K et 353.15 K et pour des pressions proches de l'atmosphérique. La sélectivité idéale des liquides ioniques pour l'absorption de l'éthane par rapport à l'éthène a ainsi pu être déterminée. La détermination de l'absorption en fonction de la température a permis d'accéder aux propriétés thermodynamiques de solvatation de ces gaz dans des liquides ioniques et à comprendre la manière dont les liquides ioniques interagissent avec ces solutés comment les liquides ioniques se structurent autour de ces molécules
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Zhang, Chengda. "SYNTHESES OF PEG/ALKYL-BASED IMIDAZOLIUM/PYRIDINIUM IONIC LIQUIDS AND APPLICATIONS ON H2S ABSORPTION& SYNTHESES OF POLYSULFONE BASED FUNCTIONALIZED IMIDAZOLIUM IONIC POLYMERS AND APPLICATIONS ON GAS SEPARATION." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/theses/1797.

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The synthesis method for PEG/alkyl-based imidazolium/pyridinium ionic liquids was studied. Four steps were used to fabricate the membranes: polymerization, chloromethylation, linkage of the polymers with the pendent groups and membrane cast. Permeabilities and CO2/N2 selectivity of two membranes were examined and each showed remarkable CO2/N2 selectivity. CO2 permeability of the [PSM-MIM][Cl] membrane is better than that of the [PSM-MEIM][Cl] membrane, which is due to the steric hindrance of the methoxyethyl group. The syntheses of PEG/alkyl-based imidazolium/pyridinium ionic liquids (IL) were studied. PEG-based ILs were demonstrated to have better H2S solubilities than the alkyl-based ILs. H2S solubilities of the imidazolium ILs and pyridinium ILs were compared. The anion effects on H2S solubilities have been investigated, while the temperature effects on H2S solubilities will need to be studied in the near future.
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Mhiri, Neïla. "Étude d'un procédé propre couplant l'absorption gaz/liquide microstructurée avec la distillation pour le traitement d'air chargé par un Composé Organique Volatil." Thesis, Vandoeuvre-les-Nancy, INPL, 2009. http://www.theses.fr/2009INPL030N/document.

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Cette thèse porte sur le développement d’un procédé industriel propre constitué par un couplage absorption-distillation, destiné aux traitements d’effluents gazeux chargés par un Composé Organique Volatil (COV). L’absorption est effectuée dans un microabsorbeur à film tombant. La première étape de ce travail consiste à caractériser le transfert de matière dans cet appareil, lors de l’absorption gaz/liquide du Perchloroéthylène (PCE) par le Di(2-EthylHexyl)Adipate (DEHA). Les expériences ont montré la faisabilité et l’intérêt de cette opération dans un micro-contacteur. En effet, les efficacités d’épuration obtenues sont comparables à celles des procédés classiques (jusqu’à 97%) et les quantités de solvant d’absorption utilisées sont très faibles. Une étude paramétrique a révélé une intensification significative du transfert de matière, côté gaz, et un gain en compacité, à la suite de la minimisation de l’épaisseur de la veine de gaz (2mm) et du débit de la phase gazeuse. Cette étude a également montré la limite du microabsorbeur à traiter de grands débits de gaz avec de bonnes efficacités, causée par la faible influence qu’exerce la vitesse du gaz sur le coefficient de transfert de matière. Ce comportement a été expliqué, grâce à des simulations en 2D, par une dispersion importante des profils de concentration indiquant une limitation diffusionnelle. Cette dernière provient essentiellement du régime laminaire lisse et de la petite taille caractérisant ce type de micro-procédé. Pour s’affranchir de cette limitation, la turbulence doit être favorisée dans le gaz. La deuxième étape de ce travail concerne l’extrapolation du microabsorbeur de laboratoire à l’échelle industrielle des PME/PMI, basée sur le concept du numbering-up. A l’issu des calculs, un absorbeur microstructuré efficace (95%), et compact (surface occupée ˜ 0,5m2) a été développé. Pour rentabiliser son fonctionnement, un recyclage par distillation flash du solvant d’absorption a été étudié. Les résultats obtenus ouvrent la voie sur une technique d’épuration prometteuse, qui nécessite néanmoins une validation théorique et expérimentale du couplage absorbeur-distillateur
This project focuses on the development of an industrial process, in which a coupled absorption/distillation unit is developed to treat gaseous effluents contaminated by a Volatile Organic Compound (VOC). Absorption is performed in a falling film microabsorber. The first stage of this work consists in characterizing the mass transfer in this device. The gas/liquid absorption of Perchloroethylene (PCE) by Di (2-EthylHexyl) Adipate (DEHA) is used as test case. Experiments showed the feasibility and the benefit of this separation process operated in a micro-contactor. Indeed, the purification efficiencies obtained are comparable to those of conventional processes (97%). Moreover, the required absorption solvent quantities are very low. A parametric study revealed significant mass transfer intensification on gas side and a gain in compactness due to the minimization of gas cavity thickness (2mm) and gas flowrate. This study also showed the limits of microabsorbers to handle large gas flowrates with good efficiencies, due to a low influence of gas velocity on the mass transfer coefficient. This behaviour was explained, thanks to 2D simulations, by a significant dispersion of concentration profiles, which indicates a diffusion limitation. The latter comes mainly from smooth laminar flow and the small size, a typical characteristic of micro-processes. To overcome this limitation, turbulence should be promoted in the gas. The second stage of this work concerns the microabsorber extrapolation from laboratory scale to industrial SMEs, based on the numbering-up concept. Calculations predict high throughputs with a microstructured absorber of competitive efficiency (95%) and high compactness (area occupied ˜ 0.5 m2). For profitable operation, solvent absorption recycling by a flash distillation is studied. The results lead to a promising treatment technique, which still requires a theoretical and experimental validation of the coupled absorber-distiller unit
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Kundu, Arunabha. "Tree phase reactors : A, Hydrodynamics and partial wetting of trickle beds : B, absorption enhancement in gas-liquid-liquid bublle column." Toulouse, INPT, 2004. http://www.theses.fr/2004INPT003G.

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Two investigations on three phase reactors are reported : liquid flow maldistribution and partial wetting of the catalyst in trickle bed reactors, and effects of adding small amounts of organic phase on gas to aqueous phase mass transfer in a bubble column. Radial distribution of the liquid flow is investigated in a 0. 152 m in diameter fixed bed of 5 successive catalysts of various shape and size, and various trickling liquids (water, water+additives, kerosene). A model has been derived based on force balance on each fluid phase and compared to experimental results including previous works. This model was extended to partial wetting, characterised by tracer analysis. In bubble column, oxygen to water mass transer was shown to be highly influenced by adding only 1% oil fraction. 7 organic liquids were used showing more than 300% mass transfer enhancement with alkanes and conversely 50% reduction with more water soluble components, these effects being mainly relatde to bubble size.
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Grima, N. M. M. "Kinetic and mass transfer studies of ozone degradation of organics in liquid/gas-ozone and liquid/solid-ozone systems." Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/3351.

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This work was concerned with the determination of mass transfer and kinetic parameters of ozone reactions with four organic compounds from different families, namely reactive dye RO16, triclocarban, naphthalene and methanol. In order to understand the mechanisms of ozone reactions with the organic pollutants, a radical scavenger (t-butanol) was used and the pH was varied from 2 to 9. Ozone solubility (CAL*) is an important parameter that affects both mass transfer rates and chemical reaction kinetics. In order to determine accurate values of the CAL* in the current work, a set of experiments were devised and a correlation between CAL* and the gas phase ozone concentration of the form CAL*(mol/L) = 0.0456 CO3 (g/m3 NTP) was obtained at 20°C. This work has also revealed that t-butanol did not only inhibit hydroxyl radical reactions but also increased mass transfer due to it increasing the specific surface area (aL). Values of the aL were determined to be 2.7 and 3.5 m2/m3 in the absence and presence of t-butanol respectively. It was noticed that the volumetric mass transfer coefficient (kLa) has increased following the addition of t-butanol. Ozone decomposition was studied at pH values of 2 to 9 in a 500 mL reactor initially saturated with ozone. Ozone decomposition was found to follow a second order reaction at pH values less than 7 whilst it was first order at pH 9. When the t-butanol was added, the decomposition of ozone progressed at a lower reaction order of 1.5 for pH values less than 7 and at the same order without t-butanol at pH 9. Ozone decomposition was found significant at high pHs due to high hydroxide ion concentration, which promotes ozone decomposition at high pHs. The reaction rate constant (k) of RO16 ozonation in the absence of t-butanol was determined. The result suggests that RO16 degradation occurs solely by molecular ozone and indirect reactions by radicals are insignificant. The chemical reaction of triclocarban with ozone was found to follow second order reaction kinetics. The degradation of naphthalene using the liquid/gas-ozone (LGO) system was studied. This result showed that hydroxyl radicals seemed to have limited effect on naphthalene degradation which was also observed when a radical scavenger (t-butanol) was used. Reaction rate constants were calculated and were found around 100 times higher than values reported in the literature due to differences in experimental conditions. From the results of the experimental investigation on the degradation of methanol by ozone it was found that the rate constant (k) of the degradation reaction increased at pH 9. The reaction stoichiometry was found to have a value of 1 mol/mol. The two steps of the liquid/solid-ozone (LSO) system were studied on beds of silica gel and a zeolitic material (D915) and the ozone adsorption process was modeled and found that particle rate controls ozone adsorption step but liquid rate controls the water treatment step. Ozone desorption with pure deionised water was studied. The water flow rate was found to accelerate the desorption rates but pH was found to decrease the desorption rates. In contrast, the effect of pH was insignificant in the presence of t-butanol. Determination of the adsorption isotherms for RO16, naphthalene and methanol revealed that RO16 did not exhibit adsorption on silica gel, but both naphthalene and methanol showed adsorption on D915 described by Langmuir model.
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Books on the topic "Gas Absorption in Liquids"

1

Budzianowski, Wojciech M., ed. Energy Efficient Solvents for CO2 Capture by Gas-Liquid Absorption. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-47262-1.

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Schmidt, Cédric. Time-Resolved Soft X-Ray Absorption Spectroscopy of Molecules in the Gas and Liquid Phases. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67838-8.

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Sagers, Matthew J. Natural gas liquids and the Soviet gas processing industry. Washington, D.C: Soviet Economic Studies Branch, Center for International Research, Bureau of the Census, U.S. Dept. of Commerce, 1986.

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Tatterson, Gary B. Fluid mixing and gas dispersionin agitated tanks. New York: McGraw-Hill, 1991.

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Hutchenson, Keith W., Aaron M. Scurto, and Bala Subramaniam, eds. Gas-Expanded Liquids and Near-Critical Media. Washington, DC: American Chemical Society, 2009. http://dx.doi.org/10.1021/bk-2009-1006.

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Fluid mixing and gas dispersion in agitated tanks. New York: McGraw-Hill, 1991.

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Hurd, Will. Changing states: Solids, liquids, and gases. Chicago, Ill: Heinemann Library, 2008.

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Changing states: Solids, liquids and gases. London: Heinemann Library, 2009.

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Bhatia, A. B. Ultrasonic absorption: An introduction to the theory of sound absorption and dispersion in gases, liquids, and solids. New York: Dover Publications, 1985.

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Gas separation by adsorption processes. London: Imperial College Press, 1997.

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Book chapters on the topic "Gas Absorption in Liquids"

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Schmidt, Cédric. "Experimental Results of TR-XAS in Liquids." In Time-Resolved Soft X-Ray Absorption Spectroscopy of Molecules in the Gas and Liquid Phases, 103–11. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67838-8_6.

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Neveux, Thibaut, Yann Le Moullec, and Éric Favre. "Post-combustion CO2Capture by Chemical Gas-Liquid Absorption." In Process Systems and Materials for CO2Capture, 283–310. Chichester, UK: John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119106418.ch11.

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Schmidt, Cédric. "Time-Resolved XAS of Gas Dissociations." In Time-Resolved Soft X-Ray Absorption Spectroscopy of Molecules in the Gas and Liquid Phases, 65–87. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67838-8_4.

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Slavtchev, S., V. Naidenov, and Zh Kozhoukharova. "Stationary Marangoni Instability in a Liquid Layer due to Non-Isothermal Gas Absorption." In Microgravity Fluid Mechanics, 91–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-50091-6_9.

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Budzianowski, Wojciech M. "Assessment of Thermodynamic Efficiency of Carbon Dioxide Separation in Capture Plants by Using Gas–Liquid Absorption." In Green Energy and Technology, 13–26. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-47262-1_2.

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Schmidt, Cédric. "Theoretical Background." In Time-Resolved Soft X-Ray Absorption Spectroscopy of Molecules in the Gas and Liquid Phases, 7–27. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67838-8_2.

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Schmidt, Cédric. "Pulse Peak Power Optimization with Filamentation." In Time-Resolved Soft X-Ray Absorption Spectroscopy of Molecules in the Gas and Liquid Phases, 89–102. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67838-8_5.

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Schmidt, Cédric. "Method and Setup Description." In Time-Resolved Soft X-Ray Absorption Spectroscopy of Molecules in the Gas and Liquid Phases, 29–64. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67838-8_3.

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Schmidt, Cédric. "Introduction." In Time-Resolved Soft X-Ray Absorption Spectroscopy of Molecules in the Gas and Liquid Phases, 1–6. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67838-8_1.

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Schmidt, Cédric. "Concluding Remarks." In Time-Resolved Soft X-Ray Absorption Spectroscopy of Molecules in the Gas and Liquid Phases, 113–15. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67838-8_7.

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Conference papers on the topic "Gas Absorption in Liquids"

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Stearns, Steven V., Trevis J. Gigliotti, and Darryl G. Murdock. "Airborne DIAL (Differential Absorption Lidar) for Broad Area Hazardous Liquid Leak Detection." In 2006 International Pipeline Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/ipc2006-10460.

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Over the summer of 2005 ITT Space Systems Division successfully detected, measured, and imaged a range of different hazardous liquids from an airborne platform during a series of field tests in Texas and New York. Under contract from the United States Department of Transportation Pipeline and Hazardous Materials Safety Administration (DOT/PHMSA), ITT examined the ability of its Airborne Natural Gas Emission Lidar (ANGEL) Service’s system to detect, measure, and image a wide range of different hydrocarbons from a remote sensing airborne platform. The objectives of the DOT/PHMSA contract were to: 1) develop an understanding of hazardous liquid pipeline leaks, 2) demonstrate that ITT’s DIAL (differential absorption lidar) technology can detect and measure hazardous liquid emissions over a broad area and in real world conditions, and 3) use this information to design a “next generation” airborne sensor system optimized for the detection of both natural gas and hazardous liquid emissions. Hazardous liquids examined in this study included propane, gas condensates, crude oil, and refined hydrocarbons like gasoline, aviation gas, diesel fuel, Jet A, and kerosene. As part of this study, ITT, in cooperation with El Paso Production and Texas A&M–Corpus Christi, completed two separate sets of overflights of a hazardous liquid storage facility. During each set of overflights, data was collected with the storage facility’s vapor recovery unit (VRU) operating and again after the VRU was turned off. In addition, hatches on each of the tanks were opened to create further emission sources. Additional aerial collections of gasoline vapors, propane, and natural gas were also completed. Data from each of the overflights was processed and the results analyzed. The ITT ANGEL Service technology was shown to be capable of rapidly detecting, measuring, and imaging a wide range of different hydrocarbons while flying at an altitude of 1,000 feet and speeds of up to 150 mph. An overview of the results from these flight tests and a discussion of the DOT/PHMSA Hazardous-Liquid Airborne Lidar Observation Study findings will be discussed.
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Shakouchi, Toshihiko. "Gas Absorption, Aeration, by Fluidic Oscillator Operated by Gas-Liquid Two-Phase Flow." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45132.

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It is known that a conventional feedback type and other type of fluidic oscillators can be operated not only by gas or liquid single phase flow but also by gas(air)-liquid(water) two-phase flow (Shakouchi, 1989, 2001). The two-phase jet flow oscillates periodically of the oscillator under some conditions, and then the gas, air bubble, and liquid flows are mixed and stirred forcibly. The contact area and time between gas and liquid flows increase considerably and then the much increasing of mass transfer, the diffusion or absorption of gas into liquid, will be expected. It may be able to construct an entirely new compact type gas-absorber, aerator, with a simple construction. In this paper, first the performance of fluidic oscillator operated by gas-liquid two-phase flow is made clear experimentally. Next, the aeration performance of the oscillator, namely the diffusion or absorption rate of air, dissolved oxygen, into water under various kind of operation conditions are examined experimentally. The following major results will be shown. (1) The oscillatory frequency f increases linearly with increasing the Re number (= udf/ν, u: mean velocity of water flow at the nozzle exit, df: nozzle width, ν: kinematic viscosity) and the void fraction α. (2) The pressure loss, flow resistance, Δp of the oscillator or increases rapidly with increasing Ref and linearly increasing α. (3) Dissolved oxygen in water can be increased considerably by fluidic oscillator operated by air-water two-phase flow, and it was well known that a new compact type aerator can be constructed by fluidic oscillator.
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Wolowelsky, Karni, Amir Gil, Moshe Elkabets, and Carmel Rotschild. "Gas detection using absorption properties of liquid crystals (Conference Presentation)." In Thermosense: Thermal Infrared Applications XL, edited by Jaap de Vries and Douglas Burleigh. SPIE, 2018. http://dx.doi.org/10.1117/12.2299834.

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Sen, Mihir, and Samuel Paolucci. "The Use of Ionic Liquids in Refrigeration." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14712.

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Ionic liquids are salts, usually with organic cations and inorganic anions, that are liquid at room temperature. There are a wide variety of ionic liquids that can be synthesized with different properties for different applications. They are generally non-volatile, non-toxic, and non-flammable with high heat capacity, high density, high thermal and chemical stability. We propose its use as an absorbent in an absorption refrigeration cycle. The refrigerant in this case would be a gas such as carbon dioxide. The present work deals with the desirable properties of ionic liquids for this application. For example, the absorbent must have a high solubility, and the heat and mass transfer coefficients of the absorbent-refrigerant solution must be large. The viscosity of the mixture, on the other hand, should not be so large as to make its pumping difficult.
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Zhang, Zhien, Yunfei Yan, Junlei Wang, Li Zhang, Yanrong Chen, and Shunxiang Ju. "Analysis of CO2 Capture From Power-Plant Flue Gas Using the Membrane Gas Absorption (MGA) Method." In ASME 2015 Power Conference collocated with the ASME 2015 9th International Conference on Energy Sustainability, the ASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2015 Nuclear Forum. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/power2015-49026.

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Currently membrane gas absorption (MGA) is a novel approach for gas separation. In the present work, a wide-ranging 2D mathematical model for CO2 absorption from the N2/CO2 mixture is proposed. Single solvents [H2O, ethylenediamine (EDA), diethanolamine (DEA), monoethanolamine (MEA), piperazine (PZ)] and blended solvents [DEA/PZ] were used as the absorbents. The non-wetting mode for the membrane contactor was considered in the calculations. The effects of gas concentration and velocity, and liquid concentration and velocity on CO2 removal were observed. The simulation results were verified with the experimental data showing a good agreement. The modeling results indicate that gas concentration and velocity have a negative effect on the capture process, while liquid concentration and velocity enhance CO2 capture. Also, it is noted that PZ has the best absorption performance than other single absorbents. The chemical solvents are much better than the physical solvent for the absorption of CO2. For mixed absorbents based on amine solutions, the CO2 removal efficiency could be about 20% higher than that of the single solutions. Thus, this model could provide the optimum operating conditions for acid gas absorption in the hollow fiber membrane module. It is also proved that the MGA approach exhibits a good potential in power-plant waste gas purification.
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Elperin, Tov, Andrew Fominykh, and Boris Krasovitov. "Modeling of Simultaneous Gas Absorption and Evaporation of Large Droplet." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79924.

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In this study we investigated numerically simultaneous heat and mass transfer during evaporation/condensation on the surface of a stagnant droplet in the presence of inert admixtures containing non-condensable solvable gas. The performed analysis is pertinent to slow droplet evaporation/condensation when Mach number is small (M≪1). The system of transient conjugate nonlinear energy and mass conservation equations was solved using anelastic approximation. Transport coefficients of the gaseous phase were calculated as functions of temperature and concentrations of gaseous species. Thermophysical properties of the liquid phase are assumed to be constant. Using the material balance at the droplet surface we obtained equations for Stefan velocity and the rate of change of the droplet radius taking into account the effect of solvable gas absorption at the gas-liquid interface. We derived also boundary conditions at gas-liquid interface taking into account the effect of gas absorption. The governing equations were solved using a method of lines. Numerical calculations showed essential change of the rates of heat and mass transfer in water droplet-air-water vapor system under the influence of solvable species in a gaseous phase. Consequently, the use of additives of solvable noncondensable gases to enhance the rate of heat and mass transfer in dispersed systems allows to increase the efficiency and reduce the size of gas-liquid contactors.
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Gudenau, H. W., H. Hoberg, and A. Mayerhofer. "Hot Gas Cleaning for Combined Cycle Based on Pressurized Coal Combustion." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-417.

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The aim of a project supported by the Minister of Science and Technology is the development of a process for gas cleaning at temperatures above 1573K. The simultaneous removal of particles and alkalis should be possible with this process. This hot gas cleaning ought to be integrated into an advanced combined cycle based on a pressurized slag tap furnace. The research concerning the development of a venturi scrubber with molten slag have been done at the Institute of Ferrous Metallurgy of the Technical University of Aachen. Studies concerning the chemical and physical properties of slags are necessary to realize such a system for hot gas cleaning. This research must be followed by research concerning the influence of physical properties of slags such as viscosity or surface tension on the atomization of liquids. Furthermore, studies are necessary concerning the precipitation efficiency of a venturi scrubber with a liquid which has the same physical properties as slag. This paper presents thermochemical calculations with regard to the absorption of gaseous alkalis by molten slag. Furthermore, it contains the investigations concerning the influence of alkali oxides on the viscosity of moltén slag.
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Liu, Diantao, Song Zhou, and Yuanqing Zhu. "Use Natrium-Alkali Method to Remove SO2 From Shipping Exhaust Gas." In ASME 2013 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icef2013-19022.

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In recent years, the purification of sulfur oxides in shipping exhaust is becoming the focus of attention. It is especially important about how to accurately determine and control the various factors affecting desulfurization efficiency. This paper built a mathematical model, mainly focusing on action and mass transfer characteristic of gas-liquid absorption progress of natrium-alkali desulphurization system. It is based on gas-liquid complicated reactions of packed absorption tower, obtaining the influence of concentration distribution of various components in liquid phase, as well as partial pressure, pH value, mass transfer rate, absorption enhancement factor, liquid gas ratio and other key parameters on SO2 absorption rate. As shown in the models, the removal efficiency of 97.8% is equivalent to use a sulfur content of 3.5% fuel oil under the restrictions in emission control area. According to the calculation of 4.0 MW diesel engines, the minimum supply rate of absorption liquid is 75.8 L/h. These data have the reference significance for the development and evaluation of shipping flue gas desulfurization systems.
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Georgiou, D. P., and G. Paleos. "The Particle-Wall, Normal-Impact Collision Coefficient in the Presence of a Liquid Film." In ASME 1990 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1990. http://dx.doi.org/10.1115/90-gt-168.

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The turbine blades of Gas Turbines operating with “dirty” fuels are sometimes covered by a very thin liquid film, which originates from the condensation of the alkalic sulfates (mainly) in the flue gases. These films may influence drastically the collision coefficient of the impinging (ash) particles. This, in turn, influences the future trajectories of these particles and their adhesive properties, especially in the rotor blades where the Coriolis aceleration becomes a significant factor in the particle kinetic energy absorption process. The study reports on the capture film height and the variation of the collision coefficient with the film height. The experimental conditions correspond to those encountered in rotor blades, where the surface tension, the wave-making process and the boyancy all contribute to this energy absorption. The results indicate that the model based on the interaction of these factors gives a goodexplanation of the energy absorption process, except for the very thin height where particle apparent mass effects dominate the process.
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Chiesa, Paolo, and Stefano Consonni. "Shift Reactors and Physical Absorption for Low-CO2 Emission IGCCs." In ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/98-gt-396.

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Integrated Gasification Combined Cycles (IGCC) exhibit conditions particularly favourable to the sequestration of CO2. The concept pursued in this paper is the generation of syngas low in carbon, where most of the heating value of the coal fuel is carried by hydrogen. Catalytic shift reactors convert most of the CO in the syngas into CO2, which is subsequently removed by physical absorption and then compressed to make it suitable for transport and permanent storage. Energy balances, performance and cost of electricity are evaluated for two plants based on a Texaco gasifier and a large, heavy-duty gas turbine giving an overall IGCC power output between 350 and 400 MW. In one plant the raw syngas exiting the gasifier is cooled in a high-temperature, radiative cooler; in the other it is quenched by the injection of liquid water. With respect to “conventional” Texaco IGCCs, the reduction of specific CO2 emissions by 90% reduces LHV efficiency from 5 to 7 percentage points and increases the cost of electricity of about 45%. These penalties can be reduced by accepting lower reductions of CO2 emissions. Compared to the semi-closed cycle considered by other authors, where CO2 is the main component of the gas turbine working fluid, the plants analyzed here exhibit higher efficiency over the whole range of specific CO2 emissions.
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Reports on the topic "Gas Absorption in Liquids"

1

Liang Hu. CARBON DIOXIDE SEPARATION BY PHASE ENHANCED GAS-LIQUID ABSORPTION. Office of Scientific and Technical Information (OSTI), September 2004. http://dx.doi.org/10.2172/890991.

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Liang Hu and Adeyinka A. Adeyiga. CARBON DIOXIDE SEPARATION BY PHASE ENHANCED GAS-LIQUID ABSORPTION. Office of Scientific and Technical Information (OSTI), May 2004. http://dx.doi.org/10.2172/825592.

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Zundelevich, Y. Absorption of sparingly soluble gases by reactive media in self-aerated gas-liquid contactors: A scale-up procedure. Office of Scientific and Technical Information (OSTI), January 1995. http://dx.doi.org/10.2172/10121165.

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Glebova, Olga. Gas to Liquids. Oxford Institute for Energy Studies, November 2013. http://dx.doi.org/10.26889/9781907555848.

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Maginn, Edward. Ionic Liquids: Breakthrough Absorption Technology for Post-Combustion CO{sub 2} Capture. Office of Scientific and Technical Information (OSTI), September 2012. http://dx.doi.org/10.2172/1081314.

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Veronica J. Rutledge. Dynamic Absorption Model for Off-Gas Separation. Office of Scientific and Technical Information (OSTI), July 2011. http://dx.doi.org/10.2172/1027923.

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Robertson, Eric Partridge. Options for Gas-to-Liquids Technology in Alaska. Office of Scientific and Technical Information (OSTI), October 1999. http://dx.doi.org/10.2172/911486.

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Author, Not Given. Coal-to-Liquids Modeling and Gas Separations Technology. Office of Scientific and Technical Information (OSTI), July 2010. http://dx.doi.org/10.2172/1010664.

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Robertson, E. P. Options for gas-to-liquids technology in Alaska. Office of Scientific and Technical Information (OSTI), December 1999. http://dx.doi.org/10.2172/752576.

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Cottet, Aurelien, Lei Wu, Andrew Meyers, David Scarborough, and Tim Lieuwen. Acoustic Absorption Measurements for Characterization of Gas Mixing. Fort Belvoir, VA: Defense Technical Information Center, May 2003. http://dx.doi.org/10.21236/ada429206.

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