| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reaction tank for agitating a particulate catalyst and waste plastic at a high temperature. <P>SOLUTION: A bottom face 21 of a reaction tank 100 for pyrolyzing waste plastic and a catalyst by circulating them in a heated state is constituted of two slopes each having an inclination crossing with each other. The slopes 25, 26 each have an ascending inclination from the starting edges 25a, 26a to the ending edges 25b, 26b and are arranged adjacent to each other in a lateral direction. A starting edge of one slope is positioned lower than the ending edge of the other slope. Screw feeders 30, 31 starting from the ending edge side of the respective slopes are provided along the respective slopes, the screw feeders having a rotation center on a line along the slope. Rotary bearings 32, 33 for the screw feeders are arranged on the rotation center line of the screw feeders 30, 31 on the side surface of the ending edge side of the reaction tank. Rotation of the screw feeders 30, 31 forms a circulation path where waste plastic is pulled up on one slope and drops onto the other slope. <P>COPYRIGHT: (C)2013,JPO&INPIT |
