METHOD FOR RECOVERING OIL

摘要

PROBLEM TO BE SOLVED: To provide a method for recovering oil easily and efficiently at a low cost by using an adsorbing material for adsorbing oil in water. SOLUTION: The method for recovering oil includes the steps of: spray-drying a predetermined slurry solution to obtain an inorganic particle to be used as a core; covering the surface of the core with a polymer to obtain the oil adsorbing material; immersing and dispersing the oil adsorbing material in water to adsorb oil in the water and recover oil from the water. The sub-standard oil adsorbing material is withdrawn from the just-produced oil adsorbing materials and reused. The oil adsorbing materials used for oil recovery are sorted into standard one and sub-standard one and the standard one is washed and reused and the sub-standard one is heated to melt the polymer, withdraw the inorganic particle and use the withdrawn inorganic particle again as a raw material of the oil adsorbing material. COPYRIGHT: (C)2010,JPO&INPIT