OIL-LIQUEFACTION APPARATUS, AND OIL-LIQUEFACTION METHOD USING SAME

Provided are: an oil-liquefaction apparatus which makes it possible to perform chemical recycle without deteriorating the efficiency of thermal cracking; and an oil-liquefaction method using the oil-liquefaction apparatus. This oil-liquefaction apparatus is provided with a thermal cracking furnace and a condenser, in which the thermal cracking furnace is provided with at least a thermal cracking kiln 21 in which a substance to be treated is placed, a heating furnace 22 which heats the thermal cracking kiln 21 from the outer surface thereof, a stirring device which stirs a material of interest in the thermal cracking kiln 21, and a discharge section which discharges a thermal cracking gas generated in the thermal cracking kiln 21 to the condenser. The thermal cracking kiln 21 has a bottom part 21d which has a bottom surface 21c and formed by a rotating body of a line segment with the center projected downward, an approximately cylindrical intermediate part 21a in which a ring-shaped inner surface 21e thereof is continued to the bottom surface 21d, and a lid part 25 which covers the upper part of the intermediate part 21a. The heating furnace 22 heats the bottom part 21d of the thermal cracking kiln 21 and at least the lower part of the intermediate part 21a. The stirring device has an axis part 27 which rotates at the center of the thermal cracking kiln and a blade part 26 which is attached to the axis part 27. The blade part 26 is slidably contacted with the bottom surface 21c and a ring-shaped surface 21b by rotating the axis part 27. La présente invention concerne : un appareil de liquéfaction d'huile qui permet d'effectuer un recyclage chimique sans détériorer l'efficacité de craquage thermique; et un procédé de liquéfaction d'huile utilisant l'appareil de liquéfaction d'huile. Ledit appareil de liquéfaction d'huile est pourvu d'un four de craquage thermique et d'un condenseur, le four de craquage thermique étant pourvu d'au moins un four de craquage thermique 21 dans lequel une substance à traiter est placée, un four de chauffage 22 qui chauffe le four de craquage thermique 21 à partir de la surface externe de celui-ci, un dispositif d'agitation qui agite un matériau d'intérêt dans le four de craquage thermique 21, et une section d'évacuation qui évacue un gaz de craquage thermique généré dans le four de craquage thermique 21 vers le condenseur. Le four de craquage thermique 21 comporte une partie inférieure 21d qui a une surface inférieure 21c et est