C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
C10G 1/04 (2006.01) C10C 3/00 (2006.01)
Patent
CA 2091508
A process that can break down mixtures of water, solids, non-volatile hydrocarbons and other accompanying substances into their primary constituents employs solvent extraction such that the water, which is to be recycled, does not contain any solids at all. The process makes it possible to process and break down oil-bearing sludge that accumulates during the hot water process of tar sands extraction, and which is stored in settling ponds and constitutes a permanent danger to the environment. The process lowers the proportion of solids in the recycled water to nearly zero, which permits sedimentation within a reasonably short period of time. The process is environmentally friendly and achieves high yields in bitumen separation with low energy and operating costs.
L'invention a trait à un procédé qui permet de décomposer en leurs composants primaires des mélanges d'eau, de matières solides, d'hydrocarbures non volatils et d'autres matières au moyen d'un solvant de sorte que l'eau qui est recyclée ne contient aucun solide. Le procédé permet de traiter et de décomposer une boue à teneur de pétrole qui s'accumule au cours du traitement à l'eau chaude du sable bitumineux pour en extraire le pétrole. Cette boue s'accumule dans des bassins de décantation et constitue un danger permanent pour l'environnement. Le procédé permet d'éliminer la presque totalité des solides contenus dans l'eau recyclée ce qui permet la sédimentation des solides dans un laps de temps relativement court. Sans danger pour l'environnement, le procédé donne des rendements élevés au plan de la séparation du bitume, nécessite peu d'énergie et ses coûts d'application sont bas.
Kirby Eades Gale Baker
Preussag Noell Wassertechnik Gmbh
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