oil sands extraction process diagram

exclusive property or privilege is claimed and defined as follows: Click for automatic bibliography generation, Process for separating oil from bituminous sand, <- Previous Patent (Color-television scr...). All rights reserved. We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. Clarke, Thomas P. (Edmonton, Alberta, CA), 405/128.55, 405/129.2. OHWE, LEE, USO’s Grande PairiePilot. If the deposit is near the surface, the oil sands is mined and sent to a bitumen processing plant. The hot water and oil sands are mixed and then transported as a pulp to a primary separation unit 2 where the major separation of oil in the form of froth, consisting of recoverable bitumen, water and mineral matter, and solid tailings occurs. 7. Primary upgrading breaks down the heavy molecules of bitumen into lighter and less viscous molecules. At the extraction plant more hot water is added to this mixture of sand, clay, bitumen, and water in a large separation vessel where settling time is provided to allow the various components to separate. Finally, the segment is rotated through 180° to discharge the dry cake, the filter cloth is washed and dried, and the cycle can again begin. You will not receive a reply. Weird & Wacky, Copyright © 2020 HowStuffWorks, a division of InfoSpace Holdings, LLC, a System1 Company. Truehybrid process Oil sands pretreatedwith solvent (viscosity reduction), followed by water extraction process. Thus the fine clay particles concentration in the hot water extraction system may be kept at whatever concentration the individual plant operation may require or desire. E.g. Open-pit mining is similar to traditional mineral mining operations and largely employed where oil sands reserves are closer to the surface (less than 75 metres underground). The dry tailings can be mixed with overburden and stacked in the mined out area by means of stackers or other conventional mining equipment to increase the stability of the soil in the disposal area and reduce the water content of the total overburden and tailings solids. It will thus be seen that a novel and extremely useful improvement has been made to the conventional oil sands hot water extraction process, this improvement clearly falling within the guidelines which have been laid down by the Alberta Energy Resources Conservation Board and the Alberta Oil Sands Environmental Research Project. Oil Sands Extraction and Processing. This invention overcomes these unresolved problems by passing the various liquid tailings through a further separation step in which the hot water is recovered together with hydrocarbons, this recovered liquid being returned into the hot water extraction process and the froth cleanup unit. 6. 6/16 EXAMPLES . Bitumen recovered from open pit mines or from in situ extraction is a very thick, viscous substance that has to be upgraded or diluted in order to be pipelined and used as feedstock in refineries. Secondary upgrading is meant to further purify and distill the bitumen obtained from primary upgrading to remove unnecessary impurities such as nitrogen, sulphur, and trace metals so that it could be used as feedstock for oil refineries. Although the invention has been described utilizing a vacuum filter unit, it is understandable that any type of separation unit which can remove liquids from solid matter as encountered in oil sands could be used bearing in mind that the separation unit must be capable of handling vast quantities of material in a continuous operation.

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