PROCESS FOR MANUFACTURING SOLID FUEL FROM WASTE OIL

PROBLEM TO BE SOLVED: To provide a process for manufacturing a solid fuel from a waste oil, which permits water in water-containing screen residues to react uniformly and sufficiently and can obtain the solid fuel good in handling property. SOLUTION: The waste oil such as a waste edible oil is subjected to the filtration processing 11 to separate it into a liquid component and screen residues. The liquid component is subjected to the sedimentation processing 12 to separate it into a liquid fuel and a water-containing liquid. The separated water-containing liquid is mixed with the above screen residues to obtain water-containing screen residues. The water-containing screen residues are mixed with a polyhydric alcohol such as diethylene glycol, then added with a lime such as unslaked lime and agitated to perform the mixing treatment 13 and produce fine powders consisting of a hydroxide formed by the hydration reaction between the lime and the water in the water-containing screen residues. Thus, the solid fuel, i.e., what the water-containing screen residues are powdered, is manufactured. COPYRIGHT: (C)2007,JPO&INPIT