| 摘要 |
PURPOSE:To separate and recover efficiently the oil component contained in oil slurry from said slurry by removing a solid component from the oil slurry with a solid-liquid separator, then treating the slurry with a centrifugal separator and heating the slurry to remove water and adding finally activated clay, etc. thereto and filtering the slurry. CONSTITUTION:The oil slurry consisting of a mixture of oil, water and sludge formed as industrial waste is pumped from a storage tank I into the 1st heating tank II where the slurry is heated to about 50 deg.C to decrease the viscosity. The heated slurry is subjected to a solid-liquid sepn. in a screw decanter III. The oil slurry from which the solid component is removed is heated to about 70 deg.C in the 2nd heating tank IV and thereafter the slurry is treated in a disc type centrifugal separator V to remove mainly the non-emulsified water. The slurry is further heated to at least 105 deg.C, more preferably >=110 deg.C in the 3rd heating tank IV, to evaporate the water to dry. A filter aid, such as activated clay, is added to the treated oil slurry in a mixing tank VII and the slurry is finally filtered in a filter press VIII, whereby the regenerated oil having the quality equivalent to the quality of ''B'' heavy fuel oil is recovered. |
