| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a polymer-based waste pyrolysis method that is capable of further efficiently carrying out the pyrolysis of polymer-based waste, and to provide a polymer-based waste pyrolysis apparatus.SOLUTION: There are provided: a polymer-based waste pyrolysis method comprising a pyrolysis gas generating step for generating pyrolysis gas by pyrolyzing polymer-based waste, an oil content recovering step for recovering the condensed oil content by cooling the pyrolysis gas, and a heating-and-outer circulation step of feeding a portion of the heated residual gas to a pyrolysis furnace via an outer circulation passage in communication with an oil content recovering unit and the pyrolysis furnace, characterized in that the method further comprises an inner circulation step for circulating the gas in the pyrolysis treatment furnace and in which a heating-and-outer circulation step is carried out from the start of heating of pyrolysis furnace until when the pyrolysis gas generation rate reaches the maximum value and after the pyrolysis gas generation rate reaches the maximum value an inner circulation step is carried out; and also a polymer-based waste pyrolysis apparatus.</p> |
