| 摘要 |
<p>A method for pyrolysing waste products by providing heating means (13) for heating gas to be passed to at least one retort vessel (3) having an inlet (25) for gas and an outlet (27) for gas. The heated gas is passed through the at least one retort vessel so as to cause pyrolysis of a charge of waste material within the at least one retort vessel (3). Using cooling means (9), the gas leaving the at least one retort vessel is cooled. At least a part of the cooled gas is recirculated to the heating means (13).</p> |
