| 摘要 |
<p>A low-boiling oil having a high octane number is produced from waste plastics containing phthalic polyester or polyvinyl chloride without generating any phthalic sublimate or carbon residue. The oil can be produced by thermally cracking waste plastics containing phthalic polyester and/or polyvinyl chloride in an atmosphere of steam or a mixture thereof with an inert gas. Alternatively, it can be produced by thermally cracking the waste plastics and catalytically cracking the oil and gas thus produced in an atmosphere of steam or a mixture thereof with an inert gas in the presence of a catalyst. Further, the waste plastics to be used may be dechlorinated prior to the thermal cracking, or the thermal cracking may be conducted in the presence of one or more members selected from among iron hydroxides, hydrated iron oxides and iron oxides.</p> |
