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 13 of 13 for “"Robinson equation of state"”.
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Reverse Microemulsion System In Compressed Co2: Phase Behavior and Applications For Cleaning Biomaterials
… as a cleaning solvent for the decontamination of biomaterials and medical devices. However, the use of CO2 in cleaning processes is limited due to its low solvent capacity for polar substances, such as proteins and biomolecules. This limitation can be overcome by adding small amounts of …
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Batch separation of tetrafluoroethylene, hexafluoropropylene and octafluorocyclobutane
… generated and modelled for use in the design of the batch distillation column. The data were fitted to the Peng-Robinson equation of state, utilizing the Mathias-Copeman alpha function. The model was used with the Wong- Sandler mixing rules alongside the NRTL alpha function. The model was …
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Vapor-liquid Equilibrium of Polymer Solutions During Thermal Decomposition of Rigid Foams
… The vapor-liquid equilibrium (VLE) behavior of the polymer solutions formed during initial decomposition can be highly non-ideal. In this research VLE behavior of high-temperature polymer solutions was studied and a procedure was developed for predicting that behavior during decomposition of …
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Simulation and optimisation of the separation process in offshore oil and gas platforms.
Hydrocarbon separation in offshore oil and gas platforms is the process that transforms extracted crude oil into transportable oil and gas. Temperatures and pressures of the separation system can be adjusted to modify the separation of the hydrocarbons. Discovery of the optimal settings of the …
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Modeling of droplet evaporation, flash-boiling, and mixture preparation in internal combustion engines
… performance pose challenges in the development of the future engine technology. Computational methods are needed to understand the mechanism of the advanced engine combustion concepts and to facilitate the development of the future clean and efficient engine technology. This study examines …
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Phase Behaviour of Alkane Solvent(s)-CO2- Water-Heavy Oil Systems at High Pressures and Elevated Temperatures
… be a prevailing solvent due to its superiority of diluting heavy oil as well as its potential of mitigating greenhouse gas emissions, though its solubility is limited in heavy oil. The addition of light hydrocarbon solvent(s) (e.g., C3H8 and n-C4H10) in CO2 stream facilitates its dissolution in …
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Nonequilibrium phase Behaviour and Mass Transfer of Alkane Solvents(s)-CO2-Heavy Oil Systems Under Reservoir Conditions
… production rate due mainly to the foamy nature of viscous oil containing gas bubbles. Even for secondary and tertiary recovery techniques, it is possible to artificially induce foamy oil flow in heavy oil reservoirs by dissolution with injected gases (e.g., CO2 and alkane solvents), which is …
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Performance Evaluation of an Enhanced Cyclic Solvent Process (ECSP) for Thin Heavy Oil Reservoirs
… and Alberta, and account for almost half of the total world heavy oil reserves. At present, only 8-9% of the original oil in place (OOIP) can be recovered in such heavy oil reservoirs with the current available technology because the oil is very viscous and contained in thin formations. It …
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Viscosity modeling of solvent-water-heavy oil/bitumen systems at high pressures and elevated temperatures
… the rising oil consumption and gradual depletion of conventional oil. The hybrid solvent-steam injection has been considered to be one of the most important enhanced oil recovery (EOR) methods for a given heavy oil/bitumen reservoir with its main mechanisms related to viscosity reduction resulted …
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Quantification of Phase Behaviour and Physical Properties of Solvents-Heavy Oil/Bitumen-Water Systems at High Pressures and Elevated Temperatures
Due to the excess heat loss of steam assisted gravity drainage (SAGD) processes and low oil production rate of solvent-based processes, the expanding solvent SAGD (ES-SAGD) process has been considered as a promising technique for enhancing heavy oil/bitumen recovery. The main ES-SAGD mechanisms …
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Phase Behaviour and Mass Transfer of Solvent(s)-CO2-Heavy Oil Systems Under Reservoir Conditions
… displacement process. One major disadvantage of CO2 immiscible process is the limited solubility of CO2 in heavy oil, resulting in limited enhanced oil recovery. Addition of light alkane solvents to CO2 stream may provide a better recovery efficiency of heavy oil, though it is not well …
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An Experimental Study of Carbon Dioxide Dissolution into a Light Crude Oil
… into a light crude oil mainly because of possible occurrence of density-driven natural convection in the CO2- saturated light crude oil phase. The primary objective of this thesis is to experimentally study the phase behaviour of a Bakken light crude oil‒CO2 system and the complex …
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Development of a Kinetic Model for Low Temperature Fischer-Tropsch Synthesis
… dependence on fossil fuels as the main source of energy. This requires a shift towards renewable and sustainable alternatives. The well-established FischerTropsch (FT) synthesis is a potential process route to produce liquid fuels and speciality chemicals and address this challenge. FT …