Pyrolysis reactor, pyrolysis system and methods of use thereof

A method of pyrolyzing shredded solid waste, the method comprising:

• selecting a system for pyrolyzing shredded solid waste, the system comprising a first pyrolysis reactor and at least a second pyrolysis reactor in series, each reactor including:
• a heater;
• a feeder which is in communication with the heater;
• a reactor chamber, which is connected to the feeder and includes walls with a refractory liner, a waste inlet, a solid residue outlet, a synthesis gas outlet pipe, a heated gas outlet, and an auger, which includes a shaft configured for heating the shredded solid waste;
• a condenser which includes a pyrolytic oil outlet and anon-condensable synthesis gas outlet;
• a pipe in fluid communication with the non-condensable synthesis gas outlet;
• and a heated gas supply duct which is in fluid communication with the heated gas outlet and the feeder;
• wherein in the first pyrolytic reactor, the shaft of the auger has a first end and a second end and the ends are attached to electrical connections, and the pipe is in fluid communication with a fuel burner of the second pyrolytic reactor;
• and wherein in the second pyrolysis reactor, the shaft of the auger is hollow and is in fluid communication with the fuel burner and the pipe is in fluid communication with the feeder of the first pyrolytic reactor;
• heating the shredded solid waste in the feeders with the heaters to provide heated shredded solid waste;
• loading the heated shredded solid waste into the reactor chambers through the waste inlets;
• pyrolyzing the heated shredded solid waste in the reactor chambers with the shafts to provide pyrolyzed solid waste;
• and
• concomitantly separating synthesis gas and solid residue into two streams from the pyrolyzed solid waste, condensing the synthesis gas in each condenser to provide pyrolysis oil and non-condensable synthesis gas, sending the gas from the heated gas outlets to the feeders via the heated gas supply ducts;
• sending the non-condensable synthesis gas from the first pyrolysis reactor to the fuel burner of the second pyrolytic reactor, and the fuel burner heating the hollow core of the auger of the second pyrolysis reactor, thereby pyrolyzing solid waste.