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 144 for “"Coke"”.
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Viscosity of coke oven gases
Thesis: B.S., Massachusetts Institute of Technology, Department of Chemical Engineering, 1944
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Petroleum coke slags: characterization and dissolution
… 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 procedure utilizes …
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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 hydrodemetalization …
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Microchemical phase characterization of petroleum coke gasification slags
… Chemical variations between individual feedstock cokes coupled with nonuniform operational conditions result in three principal categories of petroleum coke slag; 1) sulfide dominant, 2) silica dominant, and 3) oxide dominant. Sulfide dominant slags are not necessarily derived from feedstocks with …
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The Role of Flagellates in Coke-Plant Activated Sludge.
… dioxide.Flagellated protozoans were observed in coke-plant activated sludge, and the biomass of their population was determined. The ideal conditions for flagellate growth were determined so that further study of the activities of these organisms could be accomplished. The predominant flagellate …
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Recovery and use of ammonia from coke-making processes
… and agglomerates easily, making it suitable for coke production. The coke-making process is an energy-intensive process which involves heating coal at temperatures of around 1200 ˚C under an oxygen-free atmosphere for approximately 18 hours. During the process, a by-product known as coke oven gas …
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The control of participate emissions during production of coke
… around integrated iron and steel works, and coke works, in South Wales, and with the changes in such values which arise as a result of modifications to process control or to arrestment equipment. A method of evaluation of such changes, based on the cumulative sum technique, is developed, …
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Removal of light ends from coke-oven light oils
Thesis: B.S., Massachusetts Institute of Technology, Department of Chemical Engineering, 1944
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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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Zeolite deactivation during hydrocarbon reactions: characterisation of coke precursors and acidity, product distribution
… and retention of heavy by-products, called coke, which causes catalyst deactivation. This deactivation is due to the poisoning of the acid sites and/or pore blockage. The formation of coke on hydrocarbon processing catalysts is of considerable technological and economic importance and a …
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Tea, gammon, and coke : the eucharistic imaginary of T.S. Eliot and Denise Levertov.
In this project, I read for food and drink imagery across T. S. Eliot and Denise Levertov's bodies of work, and by collecting each cup of tea, meal of bloody flesh, mouthful of Cherries Jubilee, and bite of honeycomb, I illustrate the eucharistic imaginary of these poets. This project exists at the …
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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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Variations in the Oxidative Rates of Nitrosomonas europaea in Coke-Plant Activated Sludge.
… The destructive distillation of coal to produce coke, which is used as a reducing agent for iron and steel production, may result in ammonia levels above 300 mg/L in the wastewater. iron and steel industry has therefore been required to seek an effective and economical method of removing the …
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Co-electrolysis of simulated coke oven gas using solid oxide electrolysis cell technology
This research investigates utilisation of coke oven gas (COG) and its impurities (H2S and phenol) in the means of co-electrolysis using a commercially available anode supported solid oxide cell (SOC). SOCs are highly efficient electrochemical energy conversion devices that can potentially reduce …
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The microbiological destruction of thiocyanate in activated sludge plants treating coke oven effluent
… produced during the manufacture of metallurgical coke is normally carried out using the activated sludge process. The efficiency of activated sludges in purifying coke oven effluent depends largely on the maintenance of species of micro-organisms which destroy thiocyanate. The composition, …
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Analytical input-output and supply chain study of China's coke and steel sectors
… to investigate the energy supply chain of coal-coke-steel in China. To study the demand, supply, and energy-intensity issues for coal and coke from a macroeconomic perspective, I apply the model to test two hypotheses: (1) coal and coke intensities in individual economic sectors decline as …
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Sulphur Chemistry in KOH-SO2 Activation of Fluid Coke and Mercury Adsorption from Aqueous Solutions
… carbons (SIACs) from high-sulphur fluid coke by chemical activation was investigated. Using KOH and SO2, the activation process was able to produce SIACs with controllable specific surface area (SBET), pore size distribution and sulphur content. The highest SBET was over 2500 m2/g and the …
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