Given below is the preliminary process chart and description of pyrolysis technology.
(1) Pyrolysis Raw Material is stored in a raw material storage facility. This raw material is then conveyed to (2) airlock feeding system which feeds the raw material into the (3) Pyrolysis processing reactor in absence of oxygen. Pyrolysis reactor converts polymer waste into pyrolysis oil vapour, hydrocarbon gas and carbon black powder. (4) Carbon black powder is cooled and packed into 1000kilogram bags for sale. (5) The mixture of pyrolysis oil vapour and hydrocarbon gas exits pyrolysis reactor and is subjected to (6) fractional condensation so as to get separate fractions of (7) hydrocarbon gas (10) pyrolysis wax/heavy-oil and ‘pyrolysis oil + moisture’. Hydrocarbon gas is subjected to (8) high-temperature combustion and the energy produced is supplied to the pyrolysis reactor. Post high-temperature combustion, the exhaust gases are subjected to ‘waste heat recovery and scrubbing to control emission’ and cleaned flue gases are passed to (9) exhaust pipe. (10) Pyrolysis wax is either subjected to (8) high-temperature combustion or is fractionated into (14) pyrolysis oil and (12) heavy-pyrolysis-oil. The mixture of ‘pyrolysis oil + Moisture’ is passed through (13) oil-water separator to separate (14) the Pyrolysis oil from (21) Oily Wastewater - the moisture in feedstock is the course of this wastewater. (21) Oily Wastewater is passed through (22) Zero Liquid Discharge - ZLD plant and the (23) oily sludge from ZLD goes back to the pyrolysis reactor as raw material. (14) Pyrolysis oil is sold as it is in the market as a liquid fuel to be used in industrial burners. Additionally, after pyrolysis oil purification and refining, (14) Pyrolysis oil is converted into value-added products like (17) Jet Fuel, (18) Diesel, (19) Circular Crude (19) & Circular Naphtha (20) - which are used for production of circular economy plastics and sustainable chemicals.
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