| 摘要 |
<p>A method and apparatus are disclosed for extracting hydrocarbons from carbonaceous materials. The method comprises the steps of: driving a low frequency acoustic source 20 immersed within a fluid comprising the carbonaceous material, e.g. in a settling tank 10, at a frequency of between 5 and 200Hz, whereby the acoustic waves facilitate separation of the hydrocarbons from other materials within the fluid; and extracting the hydrocarbons that are at least partially separated from the fluid. The acoustic source may be a projector arranged within the tank and comprising a plurality of flexible plates configured, when driven, to generate an acoustic wave at the above frequency.</p> |
