Thèses sur le sujet « Gas treatment at high temperature »
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TERNER, MATHIEU. « Innovative materials for high temperature structural applications : 3rd Generation γ-TiAl fabricated by Electron Beam Melting ». Doctoral thesis, Politecnico di Torino, 2014. http://hdl.handle.net/11583/2527509.
Texte intégralBrundin, Carl. « Alternative energy concepts for Swedish wastewater treatment plants to meet demands of a sustainable society ». Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-146831.
Texte intégralMuritala, Ibrahim Kolawole. « Investigation of trace components in autothermal gas reforming processes ». Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2018. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-232005.
Texte intégralWu, Stanley W. M. « Hydrodynamics of gas spouting at high temperature ». Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26345.
Texte intégralApplied Science, Faculty of
Chemical and Biological Engineering, Department of
Graduate
Stevens, Nancy Shanan Moore. « Composite membranes for high temperature gas separations ». Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/10082.
Texte intégralAstbury, Christopher John. « High temperature chemistry in the gas phase ». Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236061.
Texte intégralPlewacki, Nicholas. « Modeling High Temperature Deposition in Gas Turbines ». The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587714424017527.
Texte intégralVounki, 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.
Texte intégralEnvironmental 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
Baldwin, Thomas James. « Aerosol formation in high temperature vapour-gas mixtures ». Thesis, University of Surrey, 2000. http://epubs.surrey.ac.uk/843166/.
Texte intégralZwierlein, Martin W. « High-temperature superfluidity in an ultracold Fermi gas ». Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/39290.
Texte intégralIncludes bibliographical references (p. 258-280).
This thesis presents experiments in which a strongly interacting gas of fermions was brought into the superfluid regime. The strong interactions are induced by a Feshbach scattering resonance that allows to tune the interfermion scattering length via an external magnetic field. When a Fermi mixture was cooled on the molecular side of such a Feshbach resonance, Bose-Einstein condensation of up to 107 molecules was observed. Subsequently, the crossover region interpolating between such a Bose-Einstein condensate (BEC) of molecules and a Bardeen-Cooper-Schrieffer superfluid of long-range Cooper pairs was studied. Condensates of fermion pairs were detected in a regime where pairing is purely a many-body effect, the pairs being stabilized by the presence of the surrounding particles. Superfluidity and phase coherence in these systems was directly demonstrated throughout the crossover via the observation of long-lived, ordered vortex lattices in a rotating Fermi mixture. Finally, superfluidity in imbalanced Fermi mixtures was established, and its Clogston limit was observed for high imbalance. The gas was found to separate into a region of equal densities, surrounded by a shell at unequal densities.
by Martin W. Zwierlein.
Ph.D.
Forsyth, Peter. « High temperature particle deposition with gas turbine applications ». Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:61556237-feed-43cb-9f4a-d0aed00ca3f8.
Texte intégralAndrienko, Daniil. « Non-equilibrium Models for High Temperature Gas Flows ». Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1405505300.
Texte intégralAbercrombie, Matthew G. « Acoustic microsensor with optical detection for high-temperature, high-pressure environments ». Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/19467.
Texte intégralHarra, L. K. « Spectral studies of high temperature plasmas ». Thesis, Queen's University Belfast, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359071.
Texte intégralArvanitidis, Ioannis. « Intrinsic kinetics of some high temperature gas-solid reactions / ». Stockholm : Tekniska högsk, 1998. http://www.lib.kth.se/abs98/arva0925.pdf.
Texte intégralGuha, P. K. « Smart micro-hotplate platform for high temperature gas sensor ». Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599774.
Texte intégralWilcock, Roger. « The thermodynamics of cooling in high temperature gas turbines ». Thesis, University of Cambridge, 2002. https://www.repository.cam.ac.uk/handle/1810/272029.
Texte intégralZhang, P. « Development of next generation high temperature materials for high performance gas turbine ». Thesis, University College London (University of London), 2016. http://discovery.ucl.ac.uk/1474017/.
Texte intégralArvanitis, Antonios. « High Temperature High Pressure Water Gas Shift Reaction in Zeolite Membrane Reactors ». University of Cincinnati / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1563872266361549.
Texte intégralRieger, Michael. « The alkali sorption process by solid sorbents at high temperature ». Thesis, University of Surrey, 2000. http://epubs.surrey.ac.uk/843101/.
Texte intégralDunne, David John. « Upgrading South Australian lignites by high-temperature pre-treatment / ». Title page, summary and table of contents only, 1988. http://web4.library.adelaide.edu.au/theses/09PH/09phd9231.pdf.
Texte intégralRud, A. D., I. M. Kiryan, R. М. Nikonova, V. I. Ladyanov, N. M. Bilyi et M. A. Merzlyakova. « Structure Transformation in Fullerenes C60 at High Temperature Treatment ». Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35439.
Texte intégralVilorio, Carlos R. « Gas Chromatography Micro-Chip with High Temperature Interface and Silk Screen Heaters ». BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/8690.
Texte intégralHeath, David John. « Characterisation of waxy gas-condensates by high temperature capillary gas chromatography and oxidative degradation ». Thesis, University of Plymouth, 1995. http://hdl.handle.net/10026.1/460.
Texte intégralTanaka, Yasunori, Yasunobu Yokomizu, Motohiro Ishikawa et Toshiro Matsumura. « Particle Composition of High-Pressure SF_6 Plasma with Electron Temperature Greater than Gas Temperature ». IEEE, 1997. http://hdl.handle.net/2237/7280.
Texte intégralBenny, S. « High temperature water gas shift catalysts : a computer modelling study ». Thesis, University College London (University of London), 2010. http://discovery.ucl.ac.uk/20444/.
Texte intégralKim, Seok-Jhin. « High Temperature Water Gas Shift Reaction in Zeolite Membrane Reactors ». University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1321888491.
Texte intégralLaubscher, Ryno. « Development aspects of a high temperature heat pipe heat exchanger for high temperature gas-cooled nuclear reactor systems ». Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80096.
Texte intégralENGLISH ABSTRACT: High temperature heat sources are becoming an ever-increasing imperative in the process industry for the production of plastics, ammonia and fertilisers, hydrogen, coal-toliquid fuel and process heat. Currently, high temperature reactor (HTR) technology is capable of producing helium temperatures in excess of 950°C; however, at these temperatures, tritium, which is a radioactive contaminant found in the helium coolant stream, is able to diffuse though the steel retaining wall of the helium-to-steam heat exchanger. To circumvent this radioactivity problem, regulations require an intermediate heat exchange loop between the helium and the process heat streams. In this paper, the use of a uniquely designed sodium-charged heat pipe heat exchanger is considered, and has the distinct advantage of having almost zero exergy loss as it eliminates the intermediate heat exchange circuit. In order to investigate this novel heat pipe heat exchanger concept, a special intermediate-temperature (± 240°C) experimental heat pipe heat exchanger (HPHE) was designed. This experimental HPHE uses Dowtherm A as working fluid and has two glass windows to enable visual observation of the boiling and condensation two-phase flow processes. A high temperature air-burner supply simulates the high temperature stream, and the cold stream is provided by water from a constant-heat supply tank. This experimental apparatus can be used to evaluate the validity of steady-state and start-up transient theoretical models that have been developed. This paper will highlight the special design aspects of this HPHE, the theoretical model and the solution algorithm described. Experimental results will be compared with the theoretically calculated results. The theoretical model will then be used to predict the performance of a high temperature (sodium working fluid at 850°C) HPHE will be undertaken and conclusions and recommendation made.
AFRIKAANSE OPSOMMING: Hoë temperatuur hitte bronne is besig om ‘n toenemende noodsaaklikheid te raak in die proses industrie vir die vervaardiging van plastieke, ammoniak, kunsmis, waterstof, steenkool-tot-vloeibare brandstof en proses hitte. Huidige hoë temperatuur reaktor tegnologie is in staat om helium te verhit tot temperature hoër as 950°C, maar by sulke hoë temperature is die vorming van tritium, wat ‘n radioaktiewe produk is, in die helium verkoeling stroom wat deur die reaktor vloei, ‘n probleem. Die tritium is in staat om deur die staal wand van ‘n enkel fase warmte uitruiler te diffundeer. Om hierdie radioaktiewe probleem te uitoorlê, stel huidige regulasies voor dat ‘n oorgangs hitte uitruil lus gebruik raak tussen die helium en proses strome van die reaktor stelsel. In hierdie tesis word ‘n unieke natrium gevulde hitte pyp warmte uitruiler nagevors, hierdie ontwerp het die voordeel dat dit geen “exergy” verlies het omdat dit nie ‘n oorgangs hitte uitruil lus benodig nie. Hierdie unieke konsep was nagevors deur ‘n spesiale oorgangs temperatuur (± 230°C) eksperimentiële hitte pyp warmte uitruiler te ontwerp. Hierdie eksperimentiële hitte pyp warmte uitruiler gebruik Dowtherm A as oordrags medium tussen die warm en koue strome en het twee glas venters waardeur die kook en kondensasie van die oorgangs medium dop gehou kan word. ‘n Hoë temperatuur verbrander simuleer die warm stroom deur die reaktor en die koue stroom word gesimuleer deur koue water. Die eksperimentiële opstelling sal gebruik word om die tyd afhangklike en tyd onafhangklike teoretiese wiskundige modele te valideer. Hierdie tesis sal die spesiale ontwerp aspekte van die hitte pyp warmte uitruiler, teoretiese modelle en oplos algoritme te bespreek. Eksperimentiele resultate sal met die teoretiese resultate vergelyk word en dan sal die teoretiese modelle gebruik word om ‘n natrium gevulde warmte uitruiler te simuleer. Gevolgtrekkings en aanbevelings sal in die lig van die resultate verskaf word.
Phillips, M. E. « Studies of high temperature laboratory and astrophysical plasmas ». Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252580.
Texte intégralBérubé, Pierre. « High temperature biological treatment of foul evaporator condensate for reuse ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0028/NQ48606.pdf.
Texte intégralTalyzin, Alexandr. « New Fullerene Materials Obtained in Solution and by High Pressure High Temperature Treatment ». Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2001. http://publications.uu.se/theses/91-554-5138-1/.
Texte intégralMcCann, S. M. « Spectroscopic diagnostics for high temperature astrophysical and laboratory plasmas ». Thesis, Queen's University Belfast, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335434.
Texte intégralLei, Yun School of Chemical Engineering & Industrial Chemistry UNSW. « Novel Fe2O3-Cr2O3 catalyst for high temperature water gas shift reaction ». Awarded by:University of New South Wales. School of Chemical Engineering and Industrial Chemistry, 2005. http://handle.unsw.edu.au/1959.4/23321.
Texte intégralThiele, Jeremy Allan. « High Temperature LGX Acoustic Wave Devices and Application for Gas Sensors ». Fogler Library, University of Maine, 2005. http://www.library.umaine.edu/theses/pdf/ThieleJA2005.pdf.
Texte intégralPappano, Scott William. « Environmental impacts of the modular high temperature gas-cooled reactor (MHTGR) ». Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/13668.
Texte intégralDudek, David Robert. « Single particle, high temperature, gas-solid reactions in an electrodynamic balance ». Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/39089.
Texte intégralSavage, Nancy Ortins. « Development and characterization of high temperature, selective, titania-based gas sensors / ». The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488203857249405.
Texte intégralSingh, Suniti. « High rate anaerobic treatment of LCFA-containing wastewater at low temperature ». Thesis, Paris Est, 2019. http://www.theses.fr/2019PESC2042.
Texte intégralFats, oil and grease (FOG) is a significant constituent in numerous wastewaters such as those in dairy industry. The hydrolysis of FOG results in the production of long chain fatty acids (LCFA) which destabilize the anaerobic treatment process due to their physico-chemical and microbial toxicity effects. Harnessing the high methanogenic potential of FOG necessitates effective treatment of high LCFA loads, wherein the feasibility of LCFA treatment at low temperatures has been not investigated up to now. The aim of this thesis was to study the feasibility of high-rate anaerobic treatment of LCFA-rich wastewaters at low ambient temperatures using a dairy wastewater matrix.The screening of mesophilic inocula for treatment of mixed LCFA containing synthetic dairy wastewater (SDW) in batch studies showed that granular sludge inoculum achieved faster and higher methane yields (76-82% of theoretical yield) than the two municipal digestates (1-72%) at both 20 and 10°C. The LCFA degradative capacity in the granular sludge inoculum was attributed to the presence of β-oxidizing bacteria from the family Syntrophaceae (Syntrophus and uncultured taxa), the acetotrophic activity from Methanosaeta and putative syntrophic acetate oxidizing bacteria (SAOB). Continuous high-rate treatment of SDW was found to be feasible in expanded granular sludge bed (EGSB) reactors at 20°C (hydraulic retention time (HRT) 24 h, LCFA loading rate (OLR) 670 mgCOD-LCFA/L·d, 33% COD-LCFA) with a COD removal of 84–91% and methane yield of 44–51%. SDW feeding for longer than two months resulted in LCFA accumulation, which led to granular sludge flotation (36-57%) and disintegration. To counter the LCFA induced granular sludge disintegration and flotation, a novel reactor type, dynamic sludge chamber-fixed film (DSC-FF), was designed and achieved sCOD removal of 87-98% at HRTs from 12-72 h (LCFA loading rate 220-1333 mgCOD-LCFA/L·d) at 20°C. Moreover, even at the 12 h HRT, the unsaturated LCFAs (linoleate and oleate) were treated and only part of saturated LCFAs (stearate, palmitate) remained after treatment in the DSC-FF reactors. An increased methanogenic activity was established in the reactor sludges during reactor runs; evidenced by a higher acetotrophic activity in the granular sludge (from DSC), and a higher hydrogenotrophic activity in the biofilm (from FF) indicating development of distinct metabolic capabilities in the different reactor compartments. High throughput 16S rRNA sequencing showed that the relative abundance of the acetoclastic methanogen, Methanosaeta increased in EGSB reactors when fed with increased LCFA concentrations. The relative abundance of Methanosaeta increased also in the active microbiomes of granules (from DSC) and biofilm (from FF) during the 150-d reactor operation, demonstrating acetoclastic methanogenesis as the predominant methanogenesis pathway for SDW and LCFA degradation at 20°C. Microbial communities with a high β-oxidizing along with high methanogenic activity were developed during SDW treatment in DSC-FF reactors at 20°C. In DSC-FF reactors, the biofilm microbiome (from FF) had a prominent presence of the β-oxidizing bacteria Syntrophus and the hydrogenotrophic methanogen Methanospirillum; in comparison to the presence of the acetogenic bacteria - Syntrophobacter, Desulfobulbus, and Geobacter in the granular sludge microbiome, suggesting a role of these taxa at different trophic levels during LCFA degradation. In summary, this work demonstrated successful inoculum selection at low temperatures (10 and 20°C), and high-rate anaerobic LCFA degradation at 20°C using combined approaches of inoculum mixture and novel reactor design (here, DSC-FF). The key bacterial and archaeal taxa involved in the anaerobic conversion of LCFA to methane at 20°C were also deduced
Krsmanovic, Dalibor. « High temperature ultrasonic gas flow sensor based on lead free piezoelectric material ». Thesis, University of Cambridge, 2011. https://www.repository.cam.ac.uk/handle/1810/245065.
Texte intégralSalama, I. M. « High temperature particle -to-metal interaction in a simulated gas turbine environment ». Thesis, Cranfield University, 2002. http://dspace.lib.cranfield.ac.uk/handle/1826/4610.
Texte intégralMylavarapu, Sai K. « Development of Compact Heat Exchangers for Very High-Temperature Gas-Cooled Reactors ». The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1228150070.
Texte intégralElm, Svensson Erik. « Nanotemplated High-Temperature Materials for Catalytic Combustion ». Doctoral thesis, KTH, Kemiteknik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4800.
Texte intégralQC 20100719
Elm, Svensson Erik. « Nanomaterials for high-temperature catalytic combustion ». Licentiate thesis, Stockholm : School of Chemical Science, KTH, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4360.
Texte intégralAshraf, Syeda Nishat. « Applicability of coagulation technologies for high-turbidity coal seam gas water treatment ». Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/127500/1/Syeda_Ashraf_Thesis.pdf.
Texte intégralBerger, T., J. Konheiser, A. V. Anikeev, V. V. Prikhodko, P. A. Bagryansky, E. Yu Kolesnikov, E. I. Soldatkina, Yu A. Tsidulko, K. Noack et A. A. Lizunov. « Study of high temperature and high density plasmoids in axially symmetrical magnetic fields ». Forschungszentrum Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-27870.
Texte intégralRyan, David J. « High temperature degradation of combustion CVD coated thermal barrier coatings ». Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/18909.
Texte intégralOkano, Terumi. « High temperature mercury oxidation kinetics via bromine mechanisms ». Worcester, Mass. : Worcester Polytechnic Institute, 2009. http://www.wpi.edu/Pubs/ETD/Available/etd-012509-223212/.
Texte intégralKerrigan, Brannon Michael. « System Design of a High-Temperature Downhole Transceiver ». Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/85006.
Texte intégralMaster of Science
Yesilyurt, Gokhan. « Numerical simulation of flow distribution for pebble bed high temperature gas cooled reactors ». Texas A&M University, 2004. http://hdl.handle.net/1969.1/372.
Texte intégralStone, Michael. « An assessment of the modular high temperature gas-cooled reactor for actinide burning ». Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/13369.
Texte intégral