The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The oil sands fine solids contain both organic and inorganic components. The former is typically toluene insoluble organic matter that possesses a high degree of hydrophobicity, while the latter is mostly fine clay minerals that are naturally hydrophilic. The organic components do not usually appear alone but are coated on the clay minerals surfaces rendering them partly hydrophobic and partly hydrophilic...
Mineral solids in oil sands are often coated with organic matter. These organically-modified mineral solids hinder bitumen aeration and stabilize water-in-oil emulsions, leading to low bitumen recovery and poor bitumen product quality. The study of these organic coating on the fine solids has been elusive due to the nanometer length scale and the unsuitability of sampling in high vacuum sample chambers...
Bitumen froth generated during the oil recovery operation from Athabasca oil sands needs to be cleaned to remove water and fine mineral solids for subsequent bitumen upgrading or pipeline transport. Two currently used bitumen froth cleaning methods, naphthenic froth treatment (NFT) and paraffinic froth treatment (PFT), either cannot generate market-spec bitumen froth (NFT) or causes losses of bitumen...
The aim of this study was to examine the effect of water and fine solids on coke formation during thermal cracking of a residue fraction from vacuum distillation (Athabasca vacuum tower bottoms) and Athabasca bitumen froth. Experiments were conducted in a batch reactor with 0–33.3wt.% water at 410°C for up to 80min to measure the time of onset of coke formation, total coke yield as a function of time,...
The Alberta oil sands ores are a combination of four petrologically different kinds of rocks, called “end members”, deposited in marine and estuarine sedimentary environments. The combination of the different end members affects the properties of the oil sands. Applying organic solvents for bitumen extraction from the oil sands is an alternative to the current commercial hot water extraction process...
The aggregation of micron-sized silica particles in non-aqueous (i.e. hydrocarbon) media was examined on both the macroscopic and microscopic scales. The silica surfaces were either “clean” or “treated” (i.e. with irreversibly adsorbed materials from Athabasca bitumen); the hydrocarbons were mixtures of toluene and heptane at various ratios (to allow for different degrees of “aromaticity” in the solvent)...
This paper designs four cases to investigate the performances of the polygeneration processes, which depend on the commercially ready technology to convert coal to liquid fuels (CTL) and electricity with CO 2 sequestration. With Excel-Aspen Plus based models, mass and energy conversion are calculated in detail. The simulation shows that the thermal efficiency is down with the synfuels yield...
A rutile concentrate recently produced by Lakefield Research Ltd and Syncrude Canada Ltd from athabasca oil sands tailings was characterized and attempts were made to upgrade it to market-grade. The rutile concentrate contained 75.5% TiO 2 , 18.7% Fe 2 O 3 , 1.03% Al 2 O 3 , 1.94% SiO 2 , and 563ppm Th+U. The amount of rutile (anatase) in the concentrate...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.