Patent ID: 8187428
Filing Date: 2012-05-29
Classification: B01J,C08J,C10B,C10G,Y02P,Y02W

Abstract:
1. An apparatus for converting plastic into oil, comprising: a gel-forming unit for melting plastic pieces into plastic gel; a decomposing unit for heating and decomposing the plastic gel, the decomposing unit having a cylindrical body slanted upwardly as a whole, a lead screw mounted therein and a heater around the cylindrical body; a catalyst cylinder mounted on an upper end portion of the decomposing unit and extended upwardly; a residue takeout unit that is connected at an upper end portion of the decomposing unit so as to extend downwardly; and a prevention means for preventing decomposed gas from flowing down to the residue takeout unit, wherein a connecting position where the residue takeout unit is connected to the slanted decomposing unit is deviated-obliquely upwardly of the slanted decomposing unit from a connecting position where the catalyst cylinder is connected to the decomposing unit, the residue takeout unit comprising a residue pot that has a heater for heating decomposed gas so that the decomposed gas goes up to the catalyst cylinder, and the gel-forming unit is provided with a screw mounted in a cylinder and a heater for heating the cylinder so that the plastic pieces are melted into plastic gel by frictional heating due to a feeding force of the screw and heat from the heater.