| 摘要 |
PCT No. PCT/AU88/00184 Sec. 371 Date Dec. 8, 1989 Sec. 102(e) Date Dec. 8, 1989 PCT Filed Jun. 10, 1988 PCT Pub. No. WO88/09696 PCT Pub. Date Dec. 15, 1988.A separation system for separating oil and water components of a liquid mixture wherein the oil component is comprised of droplets of a less dense phase in a more dense water phase. The mixture is fed to separation devices including a hydrocyclone for generally reducing the oil in water concentration to less than 500 ppm. The underflow of the hydrocyclone is passed to a downstream flotation device for further separation as by settling, which may be further assisted by liberating gas in the mixture, in the flotation device, to adhere such gas to oil droplets and thereby carry such droplets to the surface of the device. Pressure of fluids leaving the hydrocyclone may be reduced before entering the flotation device. A residence vessel upstream of the hydrocyclone may be provided to precoalese the mixture prior to entering the hydrocyclone. |
