Academic literature on the topic 'Traitement de gaz à haute température'
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Journal articles on the topic "Traitement de gaz à haute température"
Lecomte, Michel. "Le réacteur à gaz à très haute température (VHTR)." Revue Générale Nucléaire, no. 4 (July 2003): 69–72. http://dx.doi.org/10.1051/rgn/20034069.
Full textEhster, Sophie. "Sûreté des réacteurs à gaz à très haute température." Revue Générale Nucléaire, no. 4 (July 2003): 80–85. http://dx.doi.org/10.1051/rgn/20034080.
Full textSilvestre, G. "Appareillage pour l'Erosion à haute température sous gaz corrosifs." Materials Science and Engineering: A 120-121 (December 1989): 661–67. http://dx.doi.org/10.1016/0921-5093(89)90829-0.
Full textRenaut, Christophe, Éric Leveel, Thierry Chanu, Fabrice Darvey, Sylvain Renouf, and Mélanie Charles. "Orano achève la vitrification des solutions de produits de fission des combustibles UNGG." Revue Générale Nucléaire, no. 5 (September 2020): 50–53. http://dx.doi.org/10.1051/rgn/20205050.
Full textGerard, N., G. Weber, V. François, M. T. Mesnier, J. F. Mazue, and C. Paulin. "Conception d'une chambre de diffraction RX haute température pour l'étude de l'adsorption d'un gaz par un solide sous haute pression." Le Journal de Physique IV 08, PR5 (October 1998): Pr5–421—Pr5–428. http://dx.doi.org/10.1051/jp4:1998553.
Full textPaing, J., J. P. Sambuco, R. Costa, A. Rambaud, and B. Picot. "Bilan du carbone dans le lagunage anaérobie appliqué sous climat méditerranéen." Revue des sciences de l'eau 16, no. 3 (April 12, 2005): 357–68. http://dx.doi.org/10.7202/705512ar.
Full textBoussidi, Brahim, Ronan Fablet, Emmanuelle Autret, and Bertrand Chapron. "Accroissement stochastique de la résolution spatiale des traceurs géophysiques de l'océan: application aux observations satellitaires de la température de surface de l'océan." Revue Française de Photogrammétrie et de Télédétection, no. 202 (April 16, 2014): 66–78. http://dx.doi.org/10.52638/rfpt.2013.52.
Full textDIRRENBERGER1, P. "Méthanisation (partie 1) : principe, paramètres et polluants émis – état de l’art." Techniques Sciences Méthodes, no. 9 (September 21, 2020): 15–30. http://dx.doi.org/10.36904/tsm/202009015.
Full textBouzid, Noureddine, Noureddine Settou, Touhami Lanez, Abdelkader Djelloul, Ahmed Abdelhafid Bebba, and Fatiha Chelgham. "Rôle des transferts thermiques sur la corrosion des concentriques utilisés dans les puits producteurs d’eau albienne." Revue des sciences de l'eau 22, no. 3 (August 3, 2009): 397–406. http://dx.doi.org/10.7202/037778ar.
Full textOuksel, Tayeb, Abdelaziz Chelghoum, and Abdelbaki Mameri. "Etude de la combustion HCCI du GNC enrichi à l'hydrogène à l’aide de Chemkin-Pro." Journal of Renewable Energies 20, no. 3 (September 30, 2017): 423–31. http://dx.doi.org/10.54966/jreen.v20i3.638.
Full textDissertations / Theses on the topic "Traitement de gaz à haute température"
Villot, Audrey. "Filtration par électro-précipitation des gaz issus de la gazéification de la biomasse à haute température (300-1000°C)." Chambéry, 2010. http://www.theses.fr/2010CHAMS023.
Full textThe increasing global energy demand, the depletion of fossil resources and the increasing awareness about the environmental risks linked to the omissions of greenhouse gases lead to take a growing interest in “biomass energy”. In this context, the biomass is potentially one of the most profuse renewable energies and the only to be able to provide for the transportation fuel needs. Among the projected technologies for the biofuel production, in particular this so-called second generation biofuels, the thermochemical conversion of biomass has been identified as one of the most promising. It constitutes of a biomass gasification process followed by a Fisher-Tropsch synthesis which has the advantage to produce biofuels directly usable. To be used in synthesis process, the gases from biomass gasification must be free of particles and impurities. For energy reasons, it is also necessary to implement a filtration process at a temperature as high as possible. To address this issue, a study on the filtration of gases from the gasification of biomass with an electrostatic precipitator at high temperature (500 -1000°C) and pressure (0,1 - 1 MPa) was conducted. A parametric study has shown the possibility to use an electrostatic precipitator under these conditions of temperature and pressure, notably thanks to antagonistic influence of these two parameters. Then, filtration tests carried out directly downstream of a gasifier demonstrated the feasibility of implementing an electrostatic precipitator to purify the synthesis gases at temperatures of up to 700/800°C. Over this temperature, existing technologies do not allowed to develop an electrostatic precipitator which will answer at the operational requirements of industrial sites of second generation biofuel production
Fourcault, Alice. "Modélisation d’un étage haute température alimenté par une torche à plasma pour la dégradation des goudrons présents dans les gaz de synthèse." Pau, 2010. http://www.theses.fr/2010PAUU3015.
Full textBiomass and/or waste gasification produces a fuel biogas mainly composed by CO, H2, CH4, but it also includes by-products like tars. Europlasma company advises a process for tar removal assisted by plasma : the TurboPlasma®. The fuel biogas originally from a gasification unit is overheating by a plasma torch in a high temperature stage reactor. The plasma torch produces a plasma gas with a temperature higher than 4. 000 K. So the fuel gas is locally heated up to 1. 400 K, which allows an efficient degradation of almost tars, even of the heaviest. This process is modelized thanks to two numerical studies. The first one relies on a completely stirred tank reactor model, the second one uses the Fluent code. This last study allows to understand the internal aerodynamics of the reactor and to specify its design to reach the tar removal objectives. The gas that is obtained is suitable for a use in gas engine
Vounki, Brenda. "Adsorbants à base de phosphates pour l'abattement des métaux lourds en phase gazeuse." Electronic Thesis or Diss., Ecole nationale des Mines d'Albi-Carmaux, 2023. http://www.theses.fr/2023EMAC0015.
Full textEnvironmental standards for emissions of pollutants into the air are becoming increasingly restrictive, with new emission thresholds that must complied with. It is therefore necessary to develop and/or improve current techniques to remove heavy metals. This thesis aims to develop a calcium phosphate sorbent with controlled properties to remove heavy metals from the gas phase at high temperature (> 240°C). Although the process from getting the removal of heavy metals at low temperature (< 240°C), the one for high temperature conditions are still scarce. Initially, various syntheses of calcium phosphates were carried out to identify the influence of operating conditions on the physico-chemical and thermal properties. The liquid/solid ratio and the stirring speed proved to be the most influential parameters to control the final properties of the product. A hydroxyapatite with a specific surface area of between 90 and 100 m2/g was obtained. Based on the results obtained, the hydroxyapatite chosen for the laboratory-scale fixed-bed cadmium or lead adsorption tests was the one with the best characteristics in terms of thermal, physical, and chemical stability. Nevertheless, this manuscript mostly covered the work on cadmium adsorption. A second hydroxyapatite was also used for the adsorption tests. The adsorption tests were carried out by varying parameters such as the gas flow rate (1-3 L/h), the temperature (700-1000 °C), the contact time, the initial concentration of the pollutant and the height of the adsorbent powder bed (0.5-1.5 cm). The results demonstrated the ability of these sorbents to capture heavy metals under thermal stress (T > 700°C). Experimental data on cadmium adsorption were modelled using a mathematical approach based on the kinetics of adsorption processes and mass transfer phenomena. The model was used to predict the dynamic of cadmium adsorption on hydroxyapatite using breakthrough curves describing the cadmium concentration profile as a function of time. This work has shown that the synthesised hydroxyapatites have interesting surface, flow, thermal and thermomechanical properties, showing their possible application at high temperatures at industrial scale in a waste incineration unit
Stock, Pierre-Côme. "Etude de revêtements métalliques pour la protection des surchauffeurs d'usines d'incinération de déchets urbains." Nancy 1, 2000. http://www.theses.fr/2000NAN10076.
Full textAt present, the combustion of household refuse in incineration plants leads to the forming of gas such as HC1 and SO2, which are very corrosive to the installation. Industrials today tend to use protective coating, less expensive than solid materials. This study is thus focused on this particular aspect, and is structured in three parts. In a first phase, a physico-chemical characterization of 8 coatings was carried out, which consisted of a thorough metallographic study (chemical composition, microstructure, hardness, porosity. . . ) of the various coatings deposited on low carbon steel. In a second phase, all the coatings were tested in a corrosion known as "stand by" ( a corrosion due to the rehydratation of deposits and the condensation of corrosive gas. )This study was carried out through the standard electrochemical methods, in a acid environment highly concentrated in chlorides, simulating the conditions met by the industries. In a same type of conditions the influence of the oxydes obtained after differents thermals processings (variations in the temperature and the durations) were studied. This study thus allowed us to determine which oxides give the best protection against this type of corrosion. Finally, a protocol for testing the various coatings in incineration conditions has been completed. For this purpose, three temperatures and two gas composition were used. The coatings were embedded in incinerator deposits and tested in those conditions. After these tests, the observations of the samples allowed us to go back to the degradation mechanisms and to establish a classification. This classification seems to be in good agreements with industrials tests realized in plants
Le, Guern François. "Ecoulements réactifs à hautes températures, mesures et modélisations." Paris 7, 1988. http://www.theses.fr/1988PA077222.
Full textRoske, Laurent. "Packaging de composants grand gap haute température et haute tension." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30049/document.
Full textIn power electronics, one of the main research topics concerns high temperature operation of the components. Under such a constraint, the encapsulation and the passivation of the semiconductors devices in power module appear as physical and technological bottleneck. As a matter of fact, usual polymeric materials are unable to endure the temperature requirements set out in our study (350 °C) without significant loss of their dielectric properties. Therefore, gas insulation is considered and encouraging results have been obtained. The Discharges Inception Voltage is studied for different gases that could be used in high temperature power modules. Thanks to their dielectric properties and their low GWP, two gases have been selected: octafluoropropane (C3F8) and octafluorocyclobutane (c-C4F8), nitrogen (N2) being used as reference in this study. In a first step, the high temperature behaviors of the most widely used substrate materials (ceramics) are studied. A change of the conduction mechanism from a pure capacitive behavior (at low temperature) to a pure resistive one (at high temperature) is observed for both alumina and AlN samples. On the contrary, Si3N4 remains capacitive whatever the temperature. Such a behavior has an impact on the charges located at the surface. They disappear quickly for the two formers while they slowly decrease for the later. The field reinforcement associated to their existence and its impact on the DIV will not be the same. Whatever the gas under study, a local heating leads to a decrease in the DIV with temperature. A decrease of the distance between the two electrodes, leads to a decrease of the DIV changes vs Temperature. These results are compared to the measurements performed when the samples were uniformly heated. The use of gas in power packaging seems to be promising but it still needs a better understanding of the mechanisms involved
Ousegui, Abdellah. "Traitement haute pression - basse température : étude des phénomènes de transfert." Nantes, 2005. http://www.theses.fr/2005NANT2089.
Full textMany industries are interested in the High Pressures technology, especially the food industry. High pressure thawing, which makes profitable the decrease of the temperature of the freezing point with the pressure (-22°C at 220 MPa), is one of the most innovative applications. Thawing is then faster than conventional methods and, as it is carried out at low temperature, it avoids microbial contamination. The main objective of this work consists in modelling the high pressure thawing process. The major phenomena considered are the internal transfers with phase change and the natural convection between the surface of the food and the heating medium. We firstly studied the variation of the food properties with the temperature and the pressure. The simulation was carried out at atmospheric pressure in order to validate the model developed using the CFD code CFX5. 5. The analysis of temperature and velocity fields in non stationary regime lead to some observations of the process. The predictions performed on an experimental set-up were in a good agreement with the experimental data. The influence of the pressure, heat of compression and modification of food and medium properties was then taken into account. Simulations were also validated from a thermal point of view on a pilot-scale vessel and the model was then used to study the effect of the pressure on thawing time. Lastly, a parametric study was performed in order to evaluate some modifications and to optimize the process at an industrial scale. The potential benefit of forced convection was clearly demonstrated and the study of the filling rate open the way to further works
Artizzu, Paola. "Combustion catalytique du méthane à haute température : application dans les turbines à gaz." Lyon 1, 1996. http://www.theses.fr/1996LYO10261.
Full textThiévin, Jonathan. "Spectroscopie d'émission et d'absorption infrarouge en écoulements de gaz raréfiés : application aux gaz à très haute température et aux complexes moléculaires à très basse température." Rennes 1, 2007. http://www.theses.fr/2007REN1S056.
Full textA high enthalpy source has been developped to heat gases up to 2000 K and to produce hypersonic flows. This prototype has been coupled to a high resolution Fourier transform interferometer for the investigation of the infrared emission of very hot gases. An experimental procedure has been developped to extract the line-by-line absorption cross sections of methane and acetylene. These data are needed to model the circumstellar envelop of brown dwarves and carbon rich stars. A multipass optical system has been designed to probe hypersonic shock layers by absorption spectroscopy. In parallel, the spectroscopy of Arn (CO2)m van der Waals complexes formed in a supersonic expansion at very low temperature was investigated
Karnis, Aurélie. "Traitement à haute pression et haute température de déchets de métaux lourds vers de nouveaux matériaux stables." Phd thesis, Université Paris-Est, 2009. http://tel.archives-ouvertes.fr/tel-00551293.
Full textBooks on the topic "Traitement de gaz à haute température"
Combustion for Material Synthesis. Taylor & Francis Group, 2014.
Find full textMukasyan, Alexander S., and Alexander S. Rogachev. Combustion for Material Synthesis. Taylor & Francis Group, 2014.
Find full textMukasyan, Alexander S., and Alexander S. Rogachev. Combustion for Material Synthesis. Taylor & Francis Group, 2014.
Find full textBook chapters on the topic "Traitement de gaz à haute température"
"6 Les réacteurs à gaz à haute température." In Thermohydraulique des réacteurs, 37–44. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1147-2-008.
Full text"6 Les réacteurs à gaz à haute température." In Thermohydraulique des réacteurs, 37–44. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1147-2.c008.
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