SEPARATING METHOD OF OIL PHASE AND WATER PHASE AND SEPARATING DEVICE

• Main Authors: NINOMIYA KOHEI, SHIMOMURA HIDEO, FUJIMOTO MIKIO, NAWATA YOSHIHIRO, KUGIMOTO JUNICHI
• Format: Patent
• Language: English
• Published: 05.10.1999
• Edition: 6
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES; CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL ORCHEMICAL PROCESSES; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

PROBLEM TO BE SOLVED: To shorten the residence time of a liquid and to prevent the deposition of scales in the inside of a mixer and a settler by extracting water-soluble org. compds. in an oil phase with water and using a liquid cyclone type settler to separate the oil phase from the water phase. SOLUTION: This device consists of a static mixer and a liquid cyclone type settler. In the settler, a mixed liquid of an oil phase and a water phase is supplied at a high flow rate in the tangential direction of the outer circumference of a cylindrical container to separate a heavy liquid to the peripheral direction by centrifugal force. The oil phase and the water phase in which the mixture liquid is sufficiently mixed in the static mixer to extract water-soluble org. compds. contained in the oil phase, is supplied to the liquid cyclone type settler from a liquid inlet 1 at about a 0.5 to 6.0 m/s liquid velocity in the tangential direction in order to easily separate the oil phase from the water phase by centrifugal force. The oil phase is discharged from an exit 2 at the top of the device while the water phase is discharged from a lower exit 3. Thus, the residence time of the liquid in the case of the separation of the oil phase from the water phase can be shortened. the extraction rate of the water-soluble org. compds. is maintained high and the deposition of scales in the inside of the mixer and the settler can be prevented.