| 摘要 |
The invention relates to a method for the recovery of carbon and combination s of hydrocarbons from discarded tyres or similar polymeric material by pyrolysis, using a reactor (3) in which the material is placed in a preferab ly largely fragmented condition, whereby the material is heated to pyrolysis temperature by the recirculation of previously formed and heated pyrolysis g as which is led through the material and where the pyrolysis gas obtained in th is way is brought to condense to condensable products in a condenser (8) connected to the reactor. In order to improve the possibilities of control o f the process of pyrolysis, a reactor is used with an inlet (6) and an outlet (7) so that a gas can be led through the reactor (3) passing over the polymeric material which is placed in it, whereby at least a part of the pyrolysis gas which does not condense in the condenser (8) is heated to a predetermined temperature and is led by recirculation in a circuit through t he reactor for heating the polymeric material placed in it.
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