Method for recycling pet components and device for carrying out said method
AssigneeKrones AG
InventorKlaus Klenk
Life of this patent
Estimating the term…
Abstract
A process for the recycling of PET flakes from comminuted PET bottles, wherein the flakes are subjected to a washing treatment, are treated for at least 20 minutes in at least one washer at an elevated temperature higher than 70° C. with a cleaning solution which contains caustic soda, and at the same time are also mechanically and hydraulically treated.
Claims41
A method for recycling of PET constituents from plastic material including at least plastic beverage bottles comprising the steps of:
- comminuting said plastic beverage bottles to form a mixture of particles containing PET flakes;
- and
- washing the PET flakes, said washing comprising simultaneously treating the PET flakes hydraulically and mechanically in at least one washer with a cleaning solution including caustic soda at a temperature of about 75 to 95° C. and for about 20 to 40 minutes.
A method for recycling of PET constituents from plastic material including at least plastic beverage bottles comprising the steps of:
- comminuting said plastic beverage bottles to form a mixture of particles containing PET flakes;
- and
- washing the PET flakes, said washing comprising simultaneously treating the PET flakes hydraulically and mechanically in at least one washer with a cleaning solution including caustic soda at a temperature exceeding 70° C. and for about 30 minutes.
A method for recycling of PET constituents from plastic material including at least plastic beverage bottles comprising the steps of:
- comminuting said plastic beverage bottles to form a mixture of particles containing PET flakes;
- and
- washing the PET flakes, said washing comprising simultaneously treating the PET flakes hydraulically and mechanically in at least one washer with a cleaning solution including caustic soda at a temperature of about 80 to 90° C. and for more than 20 minutes.
A method for recycling of PET constituents from plastic material including at least plastic beverage bottles comprising the steps of:
- comminuting said plastic beverage bottles to form a mixture of particles containing PET flakes;
- washing the PET flakes, said washing comprising simultaneously treating the PET flakes hydraulically and mechanically in at least one washer with a cleaning solution including caustic soda at a temperature exceeding 70° C. and for more than 20 minutes;
- and
- using filtration in said washer.
A method for recycling of PET constituents from plastic material including at least plastic beverage bottles comprising the steps of:
- comminuting said plastic beverage bottles to form a mixture of particles containing PET flakes;
- washing the PET flakes, said washing comprising simultaneously treating the PET flakes hydraulically and mechanically in at least one washer with a cleaning solution including caustic soda at a temperature exceeding 70° C. and for more than 20 minutes;
- and
- using sieving in said washer.
A method for recycling of PET constituents from plastic material including at least plastic beverage bottles comprising the steps of:
- comminuting said plastic beverage bottles to form a mixture of particles containing PET flakes;
- washing the PET flakes, said washing comprising simultaneously treating the PET flakes hydraulically and mechanically in at least one washer with a cleaning solution including caustic soda at a temperature exceeding 70° C. and for more than 20 minutes;
- and
- using filtration following said washer.
A method for recycling of PET constituents from plastic material including at least plastic beverage bottles comprising the steps of:
- comminuting said plastic beverage bottles to form a mixture of particles containing PET flakes;
- washing the PET flakes, said washing comprising simultaneously treating the PET flakes hydraulically and mechanically in at least one washer with a cleaning solution including caustic soda at a temperature exceeding 70° C. and for more than 20 minutes;
- and
- using sieving following said washer.
A method for recycling PET constituents from plastic material including at least plastic beverage bottles comprising the steps of:
- comminuting said plastic beverage bottles to form a mixture of particles containing PET flakes;
- washing the PET flakes, said washing comprising simultaneously treating the PET flakes hydraulically and mechanically in at least one washer with a cleaning solution including caustic soda at a temperature exceeding 70° C. and for more than 20 minutes;
- treating the PET flakes in at least one sink-float separator in the cleaning solution including caustic soda, wherein paid treating is subsequent to said washing;
- and
- separating said cleaning solution including caustic soda from the PET flakes subsequent to said intensively washing, and recycling said cleaning solution including caustic soda.
A method for recycling of PET constituents from plastic material including at least plastic beverage bottles comprising the steps of:
- comminuting said plastic beverage bottles to form a mixture of particles containing PET flakes;
- washing the PET flakes, said washing comprising simultaneously treating the PET flakes hydraulically and mechanically in at least one washer with a cleaning solution including caustic soda at a temperature exceeding 70° C. and for more than 20 minutes;
- and
- continuously monitoring the concentration of said cleaning solution including caustic soda, and adjusting said concentration by measured additions to said cleaning solution including caustic soda.
A system for recycling PET flakes from plastic beverage bottles having been comminuted to form a mixture of particles comprising:
- a treatment section adapted to treating said mixture including at least one washer and at least one sink-float separator, wherein said washer comprises:
- a stirrer;
- sieve plates and automatic filters;
- mechanical and hydraulic treatment devices adapted to treating the PET flakes.
A system for recycling PET flakes from plastic beverage bottles having been comminuted to form a mixture of particles comprising:
- a treatment section adapted to treating said mixture including at least one washer, at least one sink-float separator, said sieve plates and automatic filters subsequent said washer, wherein said washer comprises:
- a stirrer;
- mechanical and hydraulic treatment devices adapted to treating the PET flakes.
A system for recycling PET flakes from plastic beverage bottles having been comminuted to form a mixture of particles comprising:
- a treatment section adapted to treating said mixture including at least one washer and at least one sink-float separator coupled to said washer and operated with said cleaning solution including caustic soda being at an elevated temperature, wherein said washer comprises:
- a stirrer;
- mechanical and hydraulic treatment devices adapted to treating the PET flakes.
A system for recycling PET flakes from plastic beverage bottles having been comminuted to form a mixture of particles comprising:
- a treatment section adapted to treating said mixture including at least one washer, at least one sink-float separator, and at least one intensive washer disposed downstream of said sink-float separator, wherein said washer comprises:
- a stirrer:
- mechanical and hydraulic treatment devices adapted to treating the PET flakes.
A system for recycling PET flakes from plastic beverage bottles having been comminuted to form a mixture of particles comprising:
- a treatment section adapted to treating said mixture including at least one washer, at least one sink-float separator, and a feeder device comprising a supply branch provided at least from said separator to said washer, wherein said washer comprises:
- a stirrer;
- mechanical and hydraulic treatment devices adapted to treating the PET flakes.
A system for recycling PET flakes from plastic beverage bottles having been comminuted to form a mixture of particles comprising:
- a treatment section adapted to treating said mixture including at least one washer and at least one sink-float separator connected to a fresh water supply, wherein said washer comprises:
- a stirrer;
- mechanical and hydraulic treatment devices adapted to treating the PET flakes.
A system for recycling PET flakes from plastic beverage bottles having been comminuted to form a mixture of particles comprising:
- a treatment section adapted to treating said mixture including at least one washer, at least one sink-float separator, and a heavy material separator disposed upstream of said washer, wherein said washer comprises:
- a stirrer;
- mechanical and hydraulic treatment devices adapted to treating the PET flakes.
A system for recycling PET flakes from plastic beverage bottles having been comminuted to form a mixture of particles comprising:
- a treatment section adapted to treating said mixture including at least one washer, at least one sink-float separator, and a metal separator disposed downstream of said washer, wherein said washer comprises:
- a stirrer;
- mechanical and hydraulic treatment devices adapted to treating the PET flakes.
A system for recycling PET flakes from plastic beverage bottles having been comminuted to form a mixture of particles comprising:
- a treatment section adapted to treating said mixture including at least one washer adapted to provide uptake and throughput capacity for a treatment time of more than about 20 minutes and at least one sink-float separator, wherein said washer comprises:
- a stirrer;
- mechanical and hydraulic treatment devices adapted to treating the PET flakes.
A system for recycling PET flakes from plastic beverage bottles having been comminuted to form a mixture of particles comprising:
- a treatment section adapted to treating said mixture including a heating device, at least one washer and at least one sink-float separator, wherein said washer comprises:
- a stirrer;
- mechanical and hydraulic treatment devices adapted to treating the PET flakes.
Dependencies are inferred from the claim text.