| 摘要 |
<p>PURPOSE:To thermally crack a large quantity of a waste plastic material continuously in good efficiency into a cracked oil, by using a construction in which a vertical cupola melting furnace is provided on the upstream side of a thermal cracking furnace and waste plastic is fed to this furnace after being molten in the melting furnace. CONSTITUTION:A waste plastic material is crushed with a crusher 1 and fed through feed tank 3, 5, etc., to the top of a vertical cupola melting furnace 6 and molten by heating with hot air supplied from a hot air generator 7. The molten plastic material in a state heated through a double pipe heater equipped with a heating means 9 is transferred to a thermal cracking furnace 10 and thermally cracked with agitation by means of an impeller 13. The formed dry- distilled gas is withdrawn from an exit 16 and condensed by cooling in a condenser 17 to obtain a cracked oil. Thic cracked oil is led through a filter oil refiner 22 to a refined oil tank 23 and distilled into a heavy fraction and a light fraction.</p> |
