Buhler Ag

Buehler Ag

Frank Goedicke

Federico Innerebner

Arthur Ruf

Lothar Reh

Beat Hani

Marc Tesch

Thomas Meili

Wilhelm Herzmann

Method and device for reprocessing a thermoplastic polycondensate, in particular for the recycling of thermoplastic polycondensates, such as polyethylene terephthalate, polyester or polyamide is provided. The polycondensate is introduced into an extruder in a solid state. The polycondensate is then heated to a temperature below melting temperature and degassed or dried at below atmospheric pressure or with an inert gas added. Preferably, to prevent the polycondensate flakes from escaping through a degassing opening, a conveying device is used to convey the escaping flakes back into the extruder. The dried flakes are then melted.

Method and device for the reprocessing of a thermoplastic polycondensate

Method and device for processing a thermoplastic condensation polymer

A method for dosing and particularly for mixing substances, particularly for mixing at least one granular or powdery solid matter with a liquid. A first substance, particularly the granular or powdery solid matter is liquidized by means of a gas fed continuously or pulsatingly, and after that this homogenized gas/matter mixture is brought together in a time stable, dosed manner and mixed with a second substance, particularly a liquid. For dosing the homogenized gas/matter mixture, there is additionally supplied to it gas prior to the mixing with the second substance, with this gas being supplied to the gas/matter stream in a sheathing way and parallel to its direction of flow.

Fly ash dosing method for dosing and device therefor

A dosing apparatus provides for dosing a particulate phase within a free flowing two phase flow of a gas phase and the particulate phase, wherein the two phase flow leaves a fluidized bed. The apparatus includes, at its bottom, a gas inlet mechanism to supply the gas via an orifice, and an outlet orifice with a discharge pipe. Control of the gas flow to maintain a predetermined level of the bed is attained by weighing the contents of the bed or by use of sensors within a treatment space of the apparatus. Widening mechanism may be located subsequent to the outlet orifice for widening the stream of particulate phase for exposing an enlarged surface area of particles for treatment.

Apparatus and method for dosing

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Niederhelfenschwil, Switzerland

Frank Goedicke