Method and device for processing plastic waste, especially polyolefins
AssigneePrzedsiebiorstwo EKONAKS Sp. z o. o.
InventorWojciech Najman
Life of this patent
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Abstract
A method for processing plastic waste, in particular polyolefins, and a device for processing plastic waste, in particular polyolefins, are used especially in the industrial utilization of plastic waste. The method consists in that a primarily refined charge after being fed into a reactor (6) is fluidized and cracked during forced progressive-rotational movement coinciding with heating. A gas-steam fraction obtained during a utilization process is continuously guided out to a cooling system whereas impurities are periodically guided out from the reactor (6) to a waste tank (22).
Claims14
A method for plastic waste processing, the method comprising steps
- primarily refining a charge;
- feeding continuously the charge into a reactor;
- plasticizing, fluidizing and cracking the charge in the reactor in a thermal and/or catalytically-thermal way at temperature of 400-500° C. and at ambient pressure during forced progressive-rotational movement of the charge coinciding with heating;
- continuously removing a gas-steam fraction from the reactor;
- and
- periodically removing process impurities from the reactor.
A device for processing plastic waste, the device comprising
- a charge feeding basket;
- a reactor being a rotary drum heated by an external source of heat, the reactor having a chamber and a mantle surrounding the chamber of the reactor;
- a coaxial duct having holes in a section placed inside of the chamber of the reactor, the coaxial duct placed coaxial with the reactor, run longitudinally inside the reactor and provided with a built-in feeding conveyor and connected to the charge feeding basket and to the reactor and used for feeding at one side of the reactor a charge from the charge feeding basket to the inside of the reactor through the holes of the coaxial duct and used for leading out at other side of the reactor a steam-gas fraction obtained in the reactor;
- guiding elements situated in the chamber of the reactor and fixed permanently to the mantle of the reactor and forcing axial and rotary movement of the charge;
- and
- an extracting spiral situated in the chamber of the reactor and delivering impurities to the built-in feeding conveyor used for taking the impurities to a waste tank.
A device for processing plastic waste, the device comprising
- a charge feeding basket;
- a reactor being a rotary drum heated by an external source of heat, the reactor having a chamber and a mantle surrounding the chamber of the reactor wherein the rotary drum of the reactor has an inside diameter equal to a length of the chamber of the rotary drum;
- a coaxial duct having holes in a section placed inside of the chamber of the reactor, the coaxial duct placed coaxially with the reactor, run longitudinally inside the reactor and provided with a built-in feeding conveyor and connected to the charge feeding basket and to the reactor and used for feeding at one side of the reactor a charge from the charge feeding basket to the inside of the reactor through the holes of the coaxial duct and used for leading out at other side of the reactor a steam-gas fraction obtained in the reactor;
- guiding elements situated in the chamber of the reactor and fixed permanently to the mantle of the reactor and forcing axial and rotary movement of the charge;
- and
- an extracting spiral situated in the chamber of the reactor and delivering impurities to the built-in feeding conveyor used for taking the impurities to a waste tank during the cleaning cycle and used for feeding the charge from the charge feeding basket to the reactor during a production cycle.
Dependencies are inferred from the claim text.