B - Operations – Transporting – 03 – B
Patent
B - Operations, Transporting
03
B
196/18
B03B 9/02 (2006.01)
Patent
CA 2029756
A process is disclosed for the removal of hydrocarbons such as bitumen or heavy fuel oil from hydrocarbon contaminated sludge, or particulate solid material or the like non-homogenous material after appropriate conditioning, such as by ball milling, with the conditioned material being aerated and then fed substantially tangentially into a substantially vertical cyclonic separator vessel to cause the hydrocarbons to which air bubbles have become attached to tend to float as a froth to the top of the vessel, with the remaining solids sinking to the bottom of the vessel. The hydrocarbon containing froth is then removed from the top of the vessel, and the remaining solids removed from the bottom of the vessel. This pneumatic flotation process obviates the need to add chemicals such as wetting agents or promoters.
Divulgation d'un procédé pour extraire les hydrocarbures comme le bitume ou le mazout lourd des boues contaminées ou des particules solides ou des matières non homogènes du genre après un traitement approprié, comme le broyage à billes. Les matières traitées sont aérées, puis dirigées essentiellement en direction tangentielle dans un cyclone séparateur essentiellement vertical pour que les hydrocarbures auxquels se sont attachées des bulles d'air aient tendance à flotter sous forme de mousse à la surface du récipient, les solides restants étant précipités au fond du récipient. La mousse renfermant les hydrocarbures est ensuite retirée de la surface et les solides restants, du fond du récipient. Grâce à ce procédé de flottation pneumatique, il n'est plus nécessaire d'ajouter des produits chimiques comme agents mouillants ou réactifs collecteurs.
Esso Resources Canada Limited
Gowling Lafleur Henderson Llp
LandOfFree
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