Pyrolysis of polycarbonate-containing material in combination with phosphorus-containing organic compound for the recovery of raw materials

A pyrolysis device for producing pyrolysate from pyrolysis feedstock, comprising at least one metering device for feeding in pyrolysis feedstock, at least one heatable reactor for the pyrolysis, and at least one pyrolysate collector, wherein:

• said heatable reactor for the pyrolysis includes at least one heating element, at least one inlet for pyrolysis feedstock, and at least one separate outlet for pyrolysate, wherein the at least one heating element is configured to be used for temperature control of the reactor at a temperature of 300° C. to 700° C.
• the metering device and the heatable reactor for the pyrolysis are arranged and configured in relation to one another such that the metering device is connected via at least one supply line to an inlet for the pyrolysis feedstock of said reactor;
• the heatable reactor for the pyrolysis and the pyrolysate collector are in fluid communication with one another such that the pyrolysate is dischargeable from said pyrolysate outlet to be introduced into the pyrolysate collector;
• the at least one pyrolysate collector includes at least one cooling device configured to be temperature-controlled at a temperature below 300° such that said collector can lower the temperature of the pyrolysate discharged from said reactor to less than 300° C., with the formation of a pyrolysis product selected from pyrolysate condensate, pyrolysate sublimate or a mixture thereof, and includes at least one container for collecting and discharging the pyrolysis product obtained by cooling;
• and
• the at least one metering device for feeding in pyrolysis feedstock, the at least one heatable reactor for the pyrolysis, and the at least one pyrolysate collector are arranged and configured in relation to one another such that they can be operated concomitantly,
• for the recovery of at least one organic aromatic compound having a hydroxyl group through pyrolysis of said polycarbonate-containing compound in the presence of at least one phosphorus-containing organic compound in which the phosphorus has a formal oxidation state of +5.