| 摘要 |
69606-33 A method and apparatus for separating an oil phase from an aqueous phase by means of a rotating drum apparatus containing one or more compartments, each being partially filled with oleophilic free bodies. When containing two or more compartments, they are separated by an apertured baffle. The interior surfaces of the drum are oleophilic and the portion of the drum sidewall, where the mixture is removed is apertured. Due to the oleophilic free bodies and interior oleophilic surfaces, the aqueous phase velocity through the drum is faster than the oil phase which adheres to the oleophilic surfaces causing an in situ build up and agglomeration of oil phase in the drum. The mixture exiting the apertured drum sidewall is partitioned by the tumbling free bodies, oleophilic drum surfaces and drum rotation such that the aqueous phase leaves the drum between the 6 and 9 o'clock positions of counter clockwise rotation where free body concentration is minimal. The oil phase is carried with the free bodies as the drum rotates and is extruded through the apertures to the outside of the drum between the 3 and 6 o'clock positions where free body concentration is greatest. Scraper means or an endless oleophilic belt partly wrapped around the apertured portion of the drum remove the extruded oil phase from the drum surface. The endless belt may be a woven mesh made of plastic of metal or may be a metal belt of joined flattened spiral metal strands. |
