Abstract

A method for removing adherent or immigrated olfactory substances from thermoplastic particles which take the form of bulk material and are exposed to dry, warm air in a treatment chamber of a warm-air container during a time period. Before the treatment in the warm-air container, the plastic particles are warmed in at least one infrared rotary tube, wherein the infrared rotary tube has at least one infrared radiator device arranged in a central region of the interior space thereof and directed towards the inner wall of the drum thereof. During a time period the plastic particles are warmed while the drum is continuously rotated and after that are transferred in the warm state, with a maximum temperature loss of 20 K, into the treatment chamber of the warm-air container where they continue to be exposed to warm air during the time period.

IPC Classes  ?

• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
• B29K 105/00 - Condition, form or state of moulded material
• F26B 17/22 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors moving materials in stationary chambers the axis of rotation being vertical or steeply inclined
• F26B 17/32 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotary or oscillating containersMachines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotary floors the movement being in a horizontal or slightly-inclined plane
• F26B 21/14 - Arrangements for supplying or controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam
• F26B 23/04 - Heating arrangements using electric heating

Abstract

Method for removing adherent or immigrated olfactory substances from thermoplastic particles which take the form of bulk material and are exposed to dry, warm air in a treatment chamber (23) of a warm-air container (20) during a time period (t2), characterized - in that, before the treatment in the warm-air container, the plastic particles are warmed in at least one infrared rotary tube (10), wherein the infrared rotary tube (10) has at least one infrared radiator device (13), arranged in a central region of the interior space thereof and directed towards the inner wall of the drum (11) thereof; and - in that during a time period (t1) the plastic particles are warmed while the drum (11) is continuously rotated and after that are transferred in the warm state, with a maximum temperature loss of 20 K, into the treatment chamber (23) of the warm-air container (20), where they continue to be exposed to warm air during the time period (t2) and - in that, after the treatment in the warm-air container (20), the bulk material is post-treated for a third time period (t3) in a conveying device (50) extending from the bottom upwards, and is thereby discharged.

IPC Classes  ?

• B29B 13/02 - Conditioning or physical treatment of the material to be shaped by heating
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
• F26B 17/22 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors moving materials in stationary chambers the axis of rotation being vertical or steeply inclined
• F26B 25/00 - Details of general application not covered by group or
• B29B 13/00 - Conditioning or physical treatment of the material to be shaped
• C08F 6/00 - Post-polymerisation treatments
• C08J 11/02 - Recovery or working-up of waste materials of solvents, plasticisers or unreacted monomers
• C08J 11/06 - Recovery or working-up of waste materials of polymers without chemical reactions

Goods & Services

Industrial drying installations; Drying installations; Chemical fiber drying apparatus; Desiccating apparatus; Drying apparatus and installations; Heating, ventilating, and air conditioning and purification equipment (ambient); Electric heat-treating furnaces; Apparatus for ventilating; Ventilating installations; Extractor units [ventilation]; Industrial ventilation apparatus; Turbine ventilators [ventilation apparatus]; Hoods for ventilating apparatus; Filters for use with apparatus for ventilating; Flues for ventilating apparatus; Dampers for ventilating installations; Electrically powered air blowers for ventilation purposes; Ventilation grilles being parts of extractor fans; Air inductor apparatus [ventilation]; Motorised fans for ventilation.

Abstract

A method for the thermal treatment of bulk materials (20) in a rotary tube (1) with at least one infrared light unit (2) comprises at least the following steps: a) introducing bulk material into the rotary tube (1), which is provided on its inner wall with at least one mixing element and in the interior space of which the pressure of the ambient atmosphere prevails; b) carrying out a heat treatment of the bulk material by at least one electrical infrared light unit (2), which is arranged at the centre of the rotary tube (1) and the light cone (3) of which is directed onto the bed of bulk material (20) that lies on the inner wall of the rotary tube (1); c) discharging the bulk material from the rotary tube (1); in addition, water vapour is directed onto the surface of the bulk material (20). The vapour (7) is introduced into the interior space of the rotary tube (1) through a nozzle tube (4), wherein the nozzle tube (4) is arranged with its vapour nozzles in the light cone (3) of the infrared light unit (2) and outside the cross section of the interior space of the rotary tube (1) that is covered by the bulk material (20). The vapour (7) is subsequently heated by the infrared light unit (2).

IPC Classes  ?

• F26B 3/30 - Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements
• F26B 11/04 - Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis

Abstract

Method for decontaminating bulk food and/or feed material, in particular raw food and/or feed materials, comprising the following method steps: —inserting the bulk material into a rotary tube dryer, —increasing the temperature of the bulk material by means of at least one infrared radiator up to a defined treatment temperature range while at the same time rotating the bulk material, —maintaining the temperature of the bulk material in the treatment temperature range during a treatment phase by means of the infrared radiator while at the same time rotating the bulk material, —reducing the temperature of the bulk material to a discharge temperature while at the same time rotating the bulk material, —discharging the bulk material from the rotary tube dryer.

IPC Classes  ?

• A23L 3/005 - Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment
• F26B 3/30 - Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements
• F26B 11/04 - Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
• A23L 3/00 - Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
• A23L 3/16 - Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating loose unpacked materials
• A23L 5/30 - Physical treatment, e.g. electrical or magnetic means, wave energy or irradiation