FIELD: chemical industry; methods and the devices of the thermal treatment of the polyethylene terephthalate granules.
SUBSTANCE: the invention is pertaining to the methods of the thermal treatment of the granules of the polyester and the device for the method realization. The technical result of the invention is development of the method of crystallization of the polyethylene terephthalate (PET) granules, which is realized without feeding of the exterior power or heat. The invention offers the method of the thermal treatment of the PET granules for achievement of the partial crystallization providing for feeding of the PET molten bath into the submerged granulator of the thermal cutting, its granulation, feeding of the gained granulate into the device separating the water and the solid substance, where the crystallization starts and the drained granulate with the granulate temperature exceeding 100°С is guided to the transporter, from which the granulate comes out with the temperature exceeding 100°С. The invention also offers the device for realization of this method.
EFFECT: the invention represents the development of the method of crystallization of the polyethylene terephthalate (PET) granules, which is realized without feeding of the exterior power or heat.
12 cl, 1 dwg
