Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"liquid hydrocarbon"”.
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Electric charging in liquid hydrocarbon filtration
Thesis. 1976. Ph.D. cn--Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
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Plasma Torch Atomizer-Igniter for Supersonic Combustion of Liquid Hydrocarbon Fuels
To realize supersonic combustion of hydrocarbons, an effective atomizer-igniter combination with the capabilities of fuel preheating, atomization, penetration, mixing, ignition and flameholding is desired. An original design concept incorporating these capabilities was built and tested at Virginia …
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The evaluation of liquid hydrocarbon contamination of soil around petrochemical tank farms at a Durban refinery
Submitted in fulfilment of the requirements for the Degree of Master of Technology: Chemistry, Durban Institute of Technology, Durban, South Africa, 2004.
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Magnetic Resonance Studies of the Diffusion Dynamics of Molecular Systems Relevant to Fischer-Tropsch Catalysis
… reaction that produces synthetic linear hydrocarbon fuels from syngas. Recently there has been renewed academic and industrial interest in the reaction due to its potential to be used in the production of carbon-neutral fuels. The reaction typically occurs inside mesoporous catalyst …
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Interfacial properties of CH₄/C₂H₆ gas hydrate particles with chemical additives
… using low sample volumes in the presence of a liquid hydrocarbon phase at high pressure and low- temperature conditions. This new method addresses an outstanding requirement in the hydrate field to provide a quantitative and reliable AA evaluation technique. Model AAs with known molecular …
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Deformation of icy moons induced by heat flux variations from the ocean
… Several icy moons of Jupiter and Saturn harbor liquid water oceans beneath their icy shells, offering possibly habitable environment or even an opportunity for the emergence of life outside the Earth. Icy moon Titan possesses a dense atmosphere and liquid hydrocarbon lakes on its surface, yet it …
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ENHANCING GAS PHASE FISCHER-TROPSCH SYNTHESIS CATALYST DESIGN
… possible to achieve narrow distribution of the liquid products. The results employing Fe-Zn-K catalysts showed that an increase in pressure increased the mean carbon chain length. In contrast, an increase in temperature resulted in a decline in the average carbon chain length. Increasing the …
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Advancing Industrial Decarbonization: Evaluating the State of Organic Membrane Technology for Class-Based Hydrocarbon Separation
… being installed at the industrial scale, liquid separations remain as the next frontier for industrial decarbonization. This thesis begins with an exploration of the history and current developments in membrane technology, focusing on enhancing membrane applications for liquid organic …
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Flame Studies on Conventional, Alternative, and Surrogate Jet Fuels, and Their Reference Hydrocarbons
… the flame propagation and extinction of various liquid hydrocarbon fuels, including conventional and alternative jet fuels, surrogate fuels, and their reference hydrocarbon components. The laminar flame speeds and extinction stretch rates are experimentally determined by using a twin-flame …
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Operation Characteristics of a Plasma Torch for Supersonic Combustion Applications with Simulated Cracked JP-7 Feedstock
… characteristics using a feedstock gas of mixed hydrocarbons representing a cracked JP-7 surrogate. The tests were part of a program to examine the torch as an igniter and flame-holder for hydrocarbon-fueled scramjet engines. Previous research has shown that the plasma torch has promise as a …
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The autothermal reforming of artificial gasoline
… oC, depending on the oxygen:carbon ratio and the liquid hydrocarbon used. Detailed kinetic studies of the steam reforming of isooctane and artificial gasoline (a mix of cyclohexane, isooctane and octane) over pre-reduced Ni-com catalysts showed that the reaction was 0.17 order in isooctane and …
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Oxygenated hydrocarbon fuels for solid oxide fuel cells
… potential to operate at high efficiencies, while liquid hydrocarbon fuels require little or no new infrastructure and can be manufactured sustainably. Using hydrocarbons in SOFCs introduces the problem of carbon deposition, which can be reduced or eliminated by judicious choice of the SOFC …
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The role of stable nitroxyl radical precursors as antioxidants in polyolefins
… reaction of a secondary amine derivative in liquid hydrocarbon and analysis of the product using FTIR and NMR spectroscopy indicated a possibility of side reaction, i.e. involvement of the amine active group (>N-H) of the antioxidant in the binding process to form the high molecular weight …
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Mercury species in natural gas condensate
… the determination of total mercury in complex liquid hydrocarbons. Samples (up to 1.0 ml) were vaporised (400oC) and swept through a gold-coated silica trap maintained at 200°C, which retained all mercury species and discarded the matrix. The trap when heated to 900°C released the mercury for …
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A fundamental analysis of means of producing and storing energy
… actinides.</p><p>The high energy density of liquid hydrocarbon fuels is ideal for transportation applications, but our ability to sustainably produce such fuels (i.e. biofuels) is limited by the low photosynthetic efficiency achieved by plants. While some proposals are made herein to make the …
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Modeling of the electrochemical conversion of CO2 in microfluidic reactors
… production of a variety of products including liquid hydrocarbon fuels. A full model that takes into account of all the significant physics and electrochemistry in the cell, including the transport of species and charges, momentum and mass conservations, and electrochemical reactions, is first …
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Reactive processing of polyolefins using antioxidant systems
… of the polymer. Model reactions of DBBA in liquid hydrocarbon (decalin) and analysis of the products using FTIR and NMR spectroscopy showed the formation of grafted DBBA onto decalin molecules as well as homopolymerisation of the AO. In the presence of Tris coagent, copolymerisation of DBBA …
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Catalytic Conversion of Lignocellulosic Biomass to Carboxylic Acids and Derivatives
… or its esters which can be further upgraded to liquid hydrocarbon fuels or value added chemicals.Although a variety of lignocellulosic biomass can be used as feedstocks in designed conversion processes, the arid-land adapted, highly water-use efficient CAM (crassulacean acid metabolism) species, …
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DEVELOPMENT OF SUPPORTED COBALT CATALYST FOR FISCHER-TROPSCH SYNTHESIS
… Synthesis (FTS) is a major part of feed-to-liquid (XTL) technologies which convert syngas (H_2+CO) into clean liquid hydrocarbon fuels and specialty chemicals. Understanding and developing FTS catalysts using mesoporous materials are of main interest in the present work. In the first step, …
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Quantification of Phase Behaviour and Physical Properties of Solvents-Heavy Oil/Bitumen-Water Systems at High Pressures and Elevated Temperatures
… parameters (BIPs) for both aqueous phase and liquid hydrocarbon phase are generalized as functions of reduced temperatures and carbon numbers of hydrocarbons, reproducing the experimental measurements well. Then, the modified PR-EOS model is successfully applied to predict the multi-phase …
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