PURPOSE: To provide a waste plastic treatment system which is constituted of specific units for pyrolysis of waste plastic into an oil component and a gas component and enables a low-boiling hydrocarbon oil to be recovered with a high efficiency, by providing therefor a specific constitution.
CONSTITUTION: The title system comprisies a pyrolysis oven 2 for pyrolysis of waste plastic, a catalytic reaction column 6 for increasing the low-boiling fraction content of a pyrolysis product formed in the oven 2 in the presence of a catalyst, and an oil separation unit for separating gas flowing from the column 6 into a gas component and an oil component. The first oil separation unit 3 is provided between the oven 2 and the column 6. The pyrolysis product is separated into a gas component and an oil component in the first unit 3 to introduce the gas component directly into the second oil separation unit 4 while evaporating the oil component again in a heating oven 5 and then introducing the evaporated oil component into the column 6 to increase the low-boiling fraction content. The gas flowing from the column 6 is introduced into the third oil separation unit 7.
HONCHI AKIO
YAMADA RYOKICHI
KATO AKIRA
YAMASHITA HISAO
MIYADERA HIROSHI
Next Patent: STAND-ALONE TRANSFER CONTROL SYSTEM