Patent ID: 9725655
Date: 2017-08-08
CPC Classifications: C10G

Claim:
1. A process for a continuous thermal decomposition of a waste plastic mixture, the process comprising the steps of: preparing the waste plastic mixture for a thermal decomposition, melting the waste plastic mixture to produce a melted mixture at a temperature sufficient to increase the vapor pressure of the melted mixture comprising polyvinylchloride, holding the temperature at about 280° C. to 320° C., removing the decomposition vapor from the melted mixture, transferring the melted mixture into a pyrolysis reactor, decomposing the melted mixture in the pyrolysis reactor at a temperature of about 450° C.-510° C., contacting the melted mixture with a heat transfer medium comprising ball bearings made of a transition metal, forming a hydrocarbon vapor in the pyrolysis reactor, feeding the hydrocarbon vapor into a vessel comprising a plurality of metal trays, separating the hydrocarbon vapor in a plurality of condensers, wherein a first hydrocarbon fraction is condensed in a first condenser and is fed back to the pyrolysis reactor for further decomposition, and wherein a second hydrocarbon fraction is condensed in a second condenser, collecting the second hydrocarbon fractions.