| 摘要 |
<p>PURPOSE:To produce fuel oil economically in a high yield, by heat-treating waste plastic in a dry distillation column, cooling generated gas to recover a liquid component and utilizing the remaining gas as fuel for heating the column. CONSTITUTION:Waste plastic is put in a dry distillation column 5, fuel oil from tank 13 is fed to a burner 12 for heating the column and burnt by feeding air from a compressor 14 and the waste plastic is dry-distilled by the temp. rise of the column. A gas generated is cooled in a cooler 6, the resulting condensate is passed through a tank 7 and a dust separator 11 and introduced into an oil tank 11. A non-condensed gas is passed through a scrubber 8 and a washer 9 and fed to the burner 12. When the quantity of said gas reaches a value capable of keeping the temp. of the column sufficiently high (300 deg.C or above), the feeding of fuel oil is stopped. While waste plastic crushed by a crusher 1 is fed to the dry distillation column 5 by means of a hydraulic cylinder, the waste is continuously dry-distilled at 400 deg.C.</p> |
