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Showing 1 to 16 of 16 for “"petroleum coke"”.
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Petroleum coke slags: characterization and dissolution
… for the identification of the phases present in petroleum coke gasification slags. documents the phase assemblages and textures, and finally determines the dissolution of vanadium from these slags as part of the considerations of potential resource reclamation. The general identification …
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Microchemical phase characterization of petroleum coke gasification slags
The inorganic chemistries of coal and petroleum differ because of their disparate geologic environments of formation, the physical state of the fuels, and the type and quantity of minerals and organic compounds in the fuels. Commercial coals typically contain 2 to 25% ash (average ~ 10%) while …
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Chemical modification of petroleum coke and applications of derived materials
Petroleum coke (petcoke) is a by-product from the oil industry and is a solid product mainly composed of carbon (> 80 wt%) with some impurities. These impurities, in particular sulfur, limit petcoke as feedstock for the application-like fuel. The aim of this thesis was to explore the possible …
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Investigation of the removal of sulphur from petroleum coke by pyrolysis, An
Includes bibliographical references.
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Simulation of Combustion and Thermal-flow Inside a Petroleum Coke Rotary Calcining Kiln
Calcined coke is the best material for making carbon anodes for smelting of alumina to aluminum. Calcining is an energy intensive industry and a significant amount of heat is wasted in the calcining process. Efficiently managing this energy resource is tied to the profit margin and survivability of …
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Impacts of Vanadium and Coke Deposition on CO2 Gasification of Nickel Catalysts Supported on Activated Carbon from Petroleum Coke
… carbon (AC) catalysts, produced from petroleum coke, were investigated at 700-900 °C using a thermogravimetric analyzer (TGA). The catalysts were coked by exposure to ethylene at 400-600 °C and/or impregnated with ~3.5 and 8.5 wt% vanadium, which is typically deposited during …
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Nitrogen oxide emissions from circulating fluidized bed combustion
… sub-bituminous and lignite, as well as one petroleum coke, were used in the study. Gas emissions in the flue gas and gas concentration profiles for 02, NOT, CO, CH4 and N20 inside the combustor were measured under various operating conditions. A multi-point gas sampling system was developed …
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Self-sustained combustion of low grade solid fuels in a stagnation-point reverse-flow combustor
… biomass, or their low-volatiles content, e.g., petroleum-coke. This results in various challenges to the combustor designer, for example reduced flame stability and poor combustion efficiency. Conventional solutions include preheating the incoming flow as well as co-firing with high-grade fuels. …
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Simulation of Combustion and Thermal-flow Inside a Pyroscrubber
The main function of a pyroscrubber in petroleum coke calcining process is to oxidize the carbonaceous contents, including hydrocarbon volatiles, of the exhaust gas from the calcination kiln, so as to leave no more than small traces of unburned volatiles, solid carbon, ashes, or emissions (e.g. CO, …
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Mechanical and microstructural characterization of nuclear grade PCEA graphite
… experimental characterization of PCEA (Petroleum Coke Extruded and Annealed) nuclear-grade graphite with emphasis on its density uniformity, elastic and strength properties, and microstructural fracture mechanisms. Bulk density measurements showed that PCEA graphite exhibits excellent …
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Investigation of new renewable energy-based multigeneration systems for Saudi Arabia
… System 2 with geothermal, and System 3 with a petroleum coke and biomass blend. Each system provides power, heating, desalination, and other commodities. The thesis aims to develop energy system flowsheets integrating multiple technologies and assess their exergetic and economic benefits …
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Microchemical characterization of ash from fuel production
… coal-burning power plants and a study done on petroleum coke slag which was produced at a Texaco gasification facility. Lastly, a comparison of bulk chemistries of ashes to those of soil and crustal rocks is made. A general understanding of the stability of elements, especially metals, in terms …
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The Influence of Water Quality Characteristics on Vanadium Toxicity to Model Aquatic Organisms
… that could present a risk for aquatic organisms. Petroleum coke (PC) has been experimentally used to treat oil sands process-affected water (OSPW) to reduce organic toxicants. However, PC contains up to 1,000 mg of V per kg of PC, and during OSPW treatment V leaches from coke reaching levels of up …
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Studies on the Degradation of Desiccants in Temperature Swing Adsorption Processes and the Adsorptive Separation of Sulfur Compounds from Industrial Fluids
… mixtures on activated carbons derived from petroleum coke were collected. It was concluded that the selectivity of H2S/CH4 increased when the surface area decreased, and the H2S/CO2 selectivity increased with the oxygen fraction of the activated carbons. The SO2 adsorption experiments …
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Carbon Supported Metal Carbide Catalysts for the Reduction of Carbon Dioxide
… to prepare a molybdenum-carbide catalyst from petroleum coke (petcoke), an abundant waste material from oil refining, with comparable activity and selectivity to other catalysts studied for the reduction of CO2 by H2. The process of converting petcoke into a catalyst involved increasing its …
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Geochemical studies of earth materials
… at the Monte Bello pilot plant efficiently burns petroleum-coke thereby producing syn-gas and electricity. This system produces more electricity than conventional burners, yet the only by-products are pharmaceutical grade sulfur and V-rich slag. Vanadium is known to exist in multiple valence …