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 11 of 11 for “"Oil upgrading"”.
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Chemistry of alkylaromatics in crude oil upgrading
Due to the rise in demand of crude oil over the long term, technologies to upgrade crude oil need to be developed to ensure maximum use efficiency of future oil sources. In typical carbon rejection processes, coke formation is a common phenomenon that would lead to decreased yield of upgraded oil. …
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In Situ Heavy Oil Upgrading Through Ultra-disperse Nano-Catalyst Injection in Naturally Fracture Reservoirs
… the next challenge for maintaining the world’s oil production. Several EOR processes are under study, one promising is the “In Situ Upgrading” which produces EOR and Upgrading by injection of a hot fluid, in this case vacuum residue from the heavy oil produced, with suspended nano-catalytic …
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Multi-scale modeling tools for coupled reaction, phase equilibrium and two-phase mixing phenomena with application to supercritical water heavy oil upgrading process
Supercritical water heavy oil upgrading, which has the potential for high distillate liquid yields with lower coke formation, is a complex process involving coupled reactions, phase equilibrium and two-phase mixing phenomena. This thesis presents the development of a range of models and tools to …
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Development of Heterogeneous Catalysts for Upgrading Biomass Pyrolysis Bio-Oils into Advanced Biofuels
… The renewable biofuels can be upgraded from bio-oils that are derived from biomass pyrolysis. Catalytic cracking and hydrodeoxygenation (HDO) are two most promising bio-oil upgrading techniques for biofuel production. Heterogeneous catalysts are essential for upgrading bio-oil into hydrocarbon …
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Thermo-Chemical Conversion of Lignocellulosic Biomass to Liquid Biofuels
… but, biomass conversion efficiency and bio-oil quality still remain challenges. This study aims to investigate the conversion paths of biomass to raw bio-oil and raw bio-oil to upgraded fungible biofuels. The goal is to design and evaluate the new paths and reactors on biomass conversion and …
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Acid-base catalysts for polycondensation of acetaldehyde in flow
Acetaldehyde is used as a bio-oil model compound in a polycondensation reaction over two acid-base catalysts, pelletized Evonik P25 TiO₂ and an activated hydrotalcite-like compound (HTlc), to produce high molecular weight molecules in the transportation fuel range. The catalytic performance of …
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In-Situ Upgrading and Recovery Enhancement of Athabasca Bitumen by Ultra-Dispersed Nanocatalysts
… methods are extensively used to extract heavy oil and bitumen with reasonable recovery percentages to compensate for the light oil production decline in recent years. In addition, new technologies are tested to increase the value of the produced liquids. Nanoparticles technology is emerging as …
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Predicting organosulfur chemistry in fuel sources
… process, but in the overall crude oil upgrading process as well. The calculated kinetic and thermochemical parameters are used to generate predictive reaction mechanisms for other processes relevant in fuel chemistry, such as the geological formation of oil and gas from kerogen. …
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Effects of phosphorus on bond rupture during hydrodeoxygenation and dehydrogenation reactions on ruthenium
… making them potential candidates for bio-oil upgrading. However, the mechanism by which the C-X (X = O, C, H) bond ruptures and the corresponding intrinsic barriers (i.e., for C-H, C-C, and C-O bond rupture) between transition metals and TMP catalysts are not well understood. Here, we …
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Reactor Design for Partial Upgrading of Bitumen via Aquaprocessing
Alberta oil industry is facing a major challenge because of the widening price differentials between West Texas Intermediate and Western Canadian Select. The Western Canadian Select is trading at low of US$ 16.71 /bbl. because of its high viscosity, density, total acid number, and sulfur content …
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Kinetic Modelling Simulation and Optimal Operation of Trickle Bed Reactor for Hydrotreating of Crude Oil. Kinetic Parameters Estimation of Hydrotreating Reactions in Trickle Bed Reactor (TBR) via Pilot Plant Experiments; Optimal Design and Operation of an Industrial TBR with Heat Integration and Economic Evaluation.
… in the petroleum refining industries to treat oil fractions for the removal of impurities (such as sulfur, nitrogen, metals, asphaltene). Hydrotreating of whole crude oil is a new technology and is regarded as one of the more difficult tasks that have not been reported widely in the literature. …