| 摘要 |
Apparatus for separating oil and sludge comprises a cylindrical vortex tank 26 having an inlet 24 for sludge bearing oil, the inlet being arranged to cause swirling of the oil/sludge to form a vortex 28. Centrifugally separated sludge falls to the bottom of the tank where it is swirled by steam from injector 25b. The sludge then leaves the tank through outlet 20a to enter a drying-extraction vessel 12 where it is dried by steam and vacuum before being discharged. The oil is further treated by steam through inlet 25a which maintains the vortex. The oil/steam mixture then passes through slits in tubular wall 31 and rises through a series of tilted cones with the oil being removed at the top, the cones having openings for water drainage. Alternatively, the oil/steam vortex may be fed to a further vortex chamber for separation. <IMAGE>
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