DE102004003779A1 - General industrial heating process, using thermal radiation, employs narrow-band infra red radiation with spectrum overlapping absorption band of object material - Google Patents

Abstract

Narrow band IR radiation is used. Its spectrum overlaps the absorption band of a material used to make the object. IR radiation is produced using a material containing the same groups of atoms as the object material. The object is irradiated successively over consecutive intervals, with IR of differing wavelengths and/or differing intensities. Heating takes place in an inert atmosphere. The apparatus optionally comprises a flame-heated panel or drum, especially in ceramic material. Adjustable heating arrangements along a production line are outlined. A filtration variant is also described. An independent claim is included for corresponding heating equipment.

Description

The The invention relates to a method for the heat treatment of objects according to the generic term of claim 1 and a device for its implementation.

Next heating of objects through thermal contact it is also common To heat objects by IR radiation. This kind of warming has the advantage that no mechanical contact with the object is necessary, not even by hot fluids (Liquid or gas).

By The present invention is intended to further develop the known method be that his effectiveness is improved.

These The object is achieved by a method having the features specified in claim 1.

Thereby, that he chooses the spectrum of the IR radiation used narrow band and chooses the position of this band, that it coincides with an absorption band of the material or this is adjacent, from which the objects at least partially exist, it is ensured that the IR radiation also predominantly in the desired Way of heating of the object is used. IR radiation, which absorbs the object only slightly, is produced only to a lesser extent. This is in terms of saving energy but also in terms of of interest, an undesirable one heat up the neighborhood of the one to be heated To avoid objects.

With the method according to the invention you can also achieve a very rapid warming. That's the way to go Cure powder coating layers in a few seconds. These also show curing one excellent scratch resistance.

advantageous Further developments of the invention are specified in subclaims.

You choose the radiator material according to claim 2 so that it contains the same groups like a material that makes up the object at least in part, that's the overlap the emission spectrum of the IR emitter used and the absorption spectrum ensures the objects in a simple way.

The Method according to claim 3 has the advantage that OH groups and / or oxygen or other elements of IV. to VI. group containing compounds (in particular oxides, carbides, nitrides) containing Materials in highly heat-resistant form inexpensive available are, e.g. in the form of ceramic material and silicates.

The Development of the invention according to claim 4 allows to easily specify how the heating of the Object temporally and spatially designed. Chooses you get an IR radiation that absorbs less well from the objects so the object is rather uniformly warmed in volume. If one chooses a radiation whose Spectrum agrees very well with the absorption spectrum of the material, from which the objects at least partially exist, so is a greater Part of the radiation already absorbed at the surface. The object is then heated in the neighborhood of the surface.

According to claim 4 one can thus the temporal course and the spatial Course of physical and / or chemical reactions that control through the heat supply brought or supported become.

This Method is also particularly suitable for the heat treatment of objects with composite structure, e.g. Bodies with plastic attachments. One can then use different IR radiations, respectively one of the materials are particularly well adapted.

The inventive method is particularly suitable for use with the specified in claim 5 Objects or materials from which the objects at least partially consist.

A first group of treatable materials concerns food, Ingredients for foods, plants and parts of plants, living things and products derived from them.

With the method according to the invention You can dry these objects, which is proposed by the invention Use of narrow-spectrum IR radiation short drying times and achieved low energy consumption.

If one uses an IR radiation in the range of 3,700 to 3,100 cm ^-1 , as is typical for OH groups, then this radiation is again preferably absorbed by OH groups, in particular of water, which is a constituent of these objects , Since the heating according to the invention begins so directly on the water, low-water components are not heated unnecessarily and remain spared.

If the above-mentioned products are heated strongly, they can be sterilized in a very simple way. Since bacteria and other harmful creatures also consist of a large percentage of water, they are reliably destroyed. This can be used eg to comply with the hygiene conditions of odor filters.

The second product group includes workpieces made of metal or plastics. Such materials can be small, e.g. Surgical instruments or the like that sterilizes to be but it can also be very extensive workpieces, such as. Body parts or whole bodies that have dried should be. In the method according to the invention, the IR radiation intervenes again specifically targeted to the water to be removed.

A another group of objects that are suitable for treatment with the method according to the invention suitable are coatings on workpieces.

in this connection can the heat treatment for a serve, a liquid applied coating to convert into a solid state. This means solvent-based paints or water base expelling the solvent or water. This expulsion can be complete respectively; but you can also only a pre-drying of the paint layer make if desired is. If powder coatings are used, the supply of IR radiation is used in the method according to the invention, melt the individual powder particles so that they too a continuous paint layer grow together. Also the drying of enamel slurries When enameling can safely and with low energy use with the inventive method carried out become. These are examples of physical reactions.

To the others can do the heat treatment serve to assist or initiate a chemical reaction, e.g. the crosslinking of monomers or oligomers to polymers in about Synthetic resin paints.

Further Examples are combinations of physical and chemical reactions. For example, Sintered materials can be prepared as follows: The sintered Powder is mixed with a binder and into the desired geometric Brought form. Now the solvent becomes of the binder by a heat treatment according to the invention (physical Reaction). At the same time or subsequently by another Heat treatment according to the invention the binder crosslinks (chemical reaction), creating a coherent Intermediate receives. Finally will the binder by a further heat treatment of the intermediate product according to the invention at higher Temperature decomposes and volatilizes (physical reaction), and with a final heat treatment according to the invention at even higher Teperatur the powder particles are sintered together (physical Reaction).

there you can carry it out the method according to the invention Generally different high temperatures due to different long exposure time, different distance to the radiation source or different radiation sources or with different ones intensity bring about used radiation sources.

Other Three-dimensional objects to be dried can be ceramic objects, bricks or liquid containing dispersions, sludges, Paps or pastes.

Also for drying powders made of metallic or inorganic Particles exist, can be the inventive method very good use.

In In some manufacturing processes, it is necessary to target a material to warm, to change its physical properties: These include thermoplastic Materials used for forming or spraying at elevated temperature need to be brought. Waxes and other lighter-melting materials often have to for use (for example for spraying) be heated or expelled from other materials by heating or removed. This too can be with the method according to the invention perform quickly, purposefully and safely. Even with adhesive dryers that need to be heated for activation, can the process according to the invention deploy.

In the above, has already been the use of the inventive method for drying of workpieces addressed. You can also use this method for drying use of products of organic materials, in particular for drying fabrics made from vegetable fibers. In the wood industry, it is necessary to put fresh wood on a given Moisture level down to dry without risk of cracking can be further processed. Also this drying can with the inventive method be carried out quickly and energy-saving, as it targeted on Water attacks, which is contained in the wood.

For some heat treatments it is necessary that at least in one phase of the entire treatment cycle a high temperature is set. According to claim 6 you can set such a high temperature without the danger thermal degradation of the material, e.g. an oxidizing through oxygen.

An apparatus as set forth in claim 7 has the advantage that the heat generated by the radiator material is required to generate the IR radiation is passed under a short path in the radiator material layer.

The Using a hot plate also gives great freedom in the choice of with her cooperating heating. It can be a Resistance heating act. However, heaters are preferred in where a fuel is burned. It may be this particular to natural gas or fuel oil act.

A Radiator layer as specified in claim 8; let yourself using known materials and techniques known in the art produce.

The Development of the invention according to claim 9 is as possible with regard to one Low energy use of advantage, since the flame supplied chemical Energy is used in its entirety for heating and therefore cheaper comes as electrical energy.

at a device according to claim 10 is it possible the intensity to adjust the IR radiation in a simple manner, namely on the Control the amount of combustible mixture containing the flame malnourished.

In a device according to claim 11 can be in a simple way a desired one Set temperature gradient. First, the intensity of the IR radiation, to the other over the wavelength of the IR radiation. Will the wavelength chosen so that the absorption in the to be heated Object is lower, there is a lower temperature as in the case where the wavelength of the IR radiation is good an absorption band of the material from which the object fits at least partially.

at a device according to claim 12 is it possible the power absorbed in the objects in a very simple way to vary by adding one element each of the IR radiation source exchanges. This may be primarily the hot plate and the radiator material layer carried by it act. Also by exchanging heaters this can be done by the device change the temperature profile or its setting range.

With The development of the invention according to claim 13, it is possible that Change characteristics of the IR radiation source during operation.

A Apparatus as claimed in claim 14 may be a Generate a plurality of narrowband IR radiations.

at a device according to claim 15, the narrowband IR radiations of different wavelengths of different surface areas issued. This makes it possible at a front of the radiation source arranged object different To treat areas differently, although the heating plate in their areas is heated the same.

at a device according to claim 16 is it possible different areas of the heating plate, the different radiator materials bear to face the object to be treated. Changing each of the object opposite lying portion of the radiation source can be easily rotated the drum-shaped Heating plate done. This can be particularly easy to do under numerical control.

Also a device according to claim 17 allows such rapid and, if desired, automatic Change of the radiator material, where in this variant the Advantage, that the each active radiator surface is just.

The Development of the invention according to claim 18 again allows the selection of the respective active radiator surface by To obtain rotation of the prism, which carries the radiator surfaces. One such rotation can be easily accomplish under numerical control.

The Development of the invention according to claim 19 allows to use an IR radiation whose spectral Bandwidth is smaller than it is at the temperature at which the heating plate is provided by the radiator material. One possible narrowband IR radiation is particularly advantageous if a heating of the environment to be heated Object as much as possible should be avoided.

You choose which induces the special narrow band of IR radiation Filter according to claim 20, so you have a total of very similar throughout the device Materials that differ only in details of their chemical composition. This facilitates the predictability of the filter properties and also the mechanical production, since one e.g. between the radiator material, the filter material and the metallic materials carrying these materials Documents same conditions in terms of of sticking and temperature-induced stresses etc.

below The invention will be described with reference to embodiments with reference closer to the drawing explained. In this show:

1 a schematic plan view of a Infrared drying line;

2 a transverse section through an adjustable wavelength and adjustable intensity IR emitter unit;

3 a similar representation as 2 in which a modified burner unit is shown;

4 a similar view as 2 in which a re-modified cylindrical IR emitter unit is shown;

5 a plan view of a heating plate and arranged thereon a radiator material layer for generating a plurality of narrow-band IR radiation;

6 a plan view of a heating plate and carried by this radiator layer, which also provides a plurality of different IR radiations;

7 a filter element used to generate very narrow band IR radiation; and

8th a diagram, on the basis of which the filter element works 8th is explained.

In 1 is with 10 total called the housing of a continuous furnace.

Through the housing 10 runs a chain conveyor 12 , the carrying units 14 objects to be treated 16 wearing.

At the objects 16 they may be organic or inorganic materials as described above. These projects are supposed to be inside the case 10 undergo a heat treatment, eg dried (completely or only partially).

Along the path of the chain conveyor 12 are on both sides radiator units 18 . 20 . 22 . 24 , and 26 arranged.

From These are only the essential parts shown. mechanical Components that serve to assimilate the various ingredients hold and adjust against each other, are omitted for clarity.

Each of the radiator units 18 to 26 comprises a plate-shaped Strahlerlement 28 which by flames 30 is heated, which is a surface burner 32 generated. This may have a plurality of nozzle tubes, which in to the drawing of 1 follow each other in the vertical direction. The flames are thus in a regular grid on the outer sides of the radiator elements 28 distributed.

Each radiating element 28 includes a heating plate 34 , It is a plate made of a good heat-conducting material, which also has good mechanical stability, such as iron or steel. The heating plates 34 each carry a thin radiator layer 36 , which consists of a material emitting in the infrared narrowband emitting material. Preferably, it is made of a ceramic material. The radiator layer 36 and the heating plate carrying it 34 are in the magnification in the upper right corner of 1 shown.

The radiator layer 36 is in the plasma arc on the heating plate 34 applied. Its thickness is between about 10 microns and about 100 microns, preferably between about 30 microns and about 50 microns.

When Material are good candidates for temperature-resistant materials in particular oxides, nitrides and carbides. For the treatment of hydrous objects OH-containing materials are particularly suitable, e.g. Clays such as kaolinite or illite).

Narrow band is to be understood here as an IR radiation in which the half-width of the emission spectrum in the range of about 400 cm ^-1 (equivalent to about 200 mμ at 3000 mμ), roughly at 0.1 times the energy of the corresponding IR light quantum of about 3700 to 3100 cm ^-1

The radiator layer 36 is flat and firm with the heating plate 34 connected. This compound results when applied to the substrate in the plasma.

alternative can be the radiator layer by oxidation, in particular anodizing create the heating plate. Therefor In particular, heating plates made of aluminum are recommended.

On the outside of the heating plates 34 are each burner 32 arranged as an array of parallel tubular nozzle tubes, each having a plurality along a surface line distributed openings and the outer surfaces of the radiator elements heat uniformly to temperatures in the range of about 200 ° C to about 700 ° C or 800 ° C, depending on which intensity of IR radiation one wishes.

The burners 32 are via controllable throttle valves 38 with a gas pipe 40 connected, the natural gas or another combustible gas leads.

Typical heating capacities of the burners 32 are in the range of about 5 kW to about 20 kW per m ² radiator surface.

Control terminals of the burner 32 are with associated outputs of a control unit 42 connected, which with a display 50 and a control panel 52 is provided to the current operating parameters of the radiator units 18 to 30 display and allow these operating parameters to be set to new actual values.

In this way, the temperatures and thus the intensities of the different radiator units 18 to 26 be set independently.

The radiator units 18 to 30 have except the emitter unit 28 the same dimensions. The radiator unit 28 is slightly shorter in the conveying direction of the products than the other emitter units.

Inside the case 10 You can now set a temperature profile in the conveying direction, that you burn the burner 32 with different strong flame 30 burn, as shown in the drawing. This is how the burners run 32 the radiator units 18 with a small flame, the burner 32 the radiator units 20 with medium flame, the burner of the radiator units 22 and 24 with full flame and the burner of the radiator unit 26 again with half a flame.

In addition, the radiator layers differ 36 of the different radiator units: the radiator layers 36 the radiator units 18 . 20 . 22 and 26 are made of a ceramic material that has an IR emission spectrum that overlaps slightly less with the absorption spectrum of water than the radiator layer 36 the radiator unit 24 does.

This means that the IR radiation coming from the emitter unit 24 When heated by the associated burner, it generates more at the surface of OH-containing objects 16 is absorbed and penetrates less into the interior of the products than the IR radiations do from the radiator units 18 . 20 . 22 and 26 be generated.

In this way, a total of a progressive increase in temperature is thus produced inside the products along the conveying path. Reach the products 16 the radiator unit 24 , a preferred drying of the object surface. At the last emitter unit 26 Then again takes place mainly in volume drying.

The objects to be dried 16 can also be layers that are on a substrate, such as paint coatings that were created by spraying or dipping on a body or body parts.

If you send such objects 16 by the drying device after 1 , so they go through the described temperature profile. In solvent-based paints, the solvent is first volatilized from the volume of the layer before in the emitter unit 24 the surface of the lacquer layer is hardened. The expulsion of the solvent is thus not hindered by a surface skin. If, first, a surface skin were to be formed by drying, the expulsion of solvent would lead to bubbles or other irregularities affecting the appearance of the paint.

For water-based Lacke applies the above said mutatis mutandis.

If the lacquer layer consists of powder particles, then the powder particles are initially melted progressively and welded to the surface of the sheet, before then at the radiator unit 24 the full melting in the liquid state takes place.

The last radiator unit 26 is used in the embodiment considered here a gentle transition to ambient temperatures.

It is understood that one can increase and decrease the number, dimensions, wavelengths and bandwidths of the emitter units, as with respect to the particular objects to be treated 16 is displayed.

In a radiator unit according to 1 you can see the profile of the heat flow coming from the objects 16 is recorded, not only by adjusting the size of the flames of each burner 32 vary, you can also for different production series by the heating plates 34 and the radiator layers they carry 36 formed actual radiator elements 30 change. For this purpose, these radiator elements are preferably detachable on in 1 Hinged device frame not shown.

Replacing radiator elements in a heat treatment device after 1 is in practice only to be carried out when the radiator elements are largely cooled (under operating conditions, these elements are typically at temperatures between 600 and 1200 ° C).

In 2 is a radiator unit 54 wiederge which can be adjusted during operation to different wavelengths and / or different width of the spectral band of the emitted IR radiation.

For this purpose, the radiator unit comprises 54 a triangular base plate 56 , which has vertical triangular cross-section hollow profile stand 58 with a likewise triangular cover plate 60 connected is.

The stands 58 are each provided at their upper and lower ends in their side surfaces with holes not shown, in which angled hooks 62 are mounted at the appropriate places on the back of plate-shaped radiator elements 70 . 72 . 74 are arranged.

The radiator elements 70 . 72 . 74 each include a heating plate 76 and a radiator layer carried thereby 78 made of radiating material. The of the heating plates of the radiator elements 70 . 72 and 74 Supported radiator layers differ with respect to the wavelength and / or the bandwidth of the IR radiation emitted by them when heated.

At the middle of the bottom plate 54 and the cover plate 60 are stubs 80 provided over which the total of the shape of a prism having triangular cross-section radiator unit 54 are rotatably mounted in non-illustrated space-fixed frame parts.

For the purposes of the description, assume that the objects to be dried 16 before the in 2 underlying radiator element 70 be moved from left to right.

Behind the radiator element 70 there is a total of 82 designated burner, which consists of two telescopic collapsible burner boxes 84 . 86 consists.

The ends of the burner boxes lie in an extended working geometry 84 . 86 near the vertical edges of the planar radiating element 70 ,

The interior of the burner 82 is over a line 88 with an axial channel 90 connected to one of the stub shaft 80 leads, as in 3 shown schematically.

The channel 90 is over a rotary joint 92 and a controllable throttle valve 94 with a gas pipe 96 connected.

To move the burner boxes 84 . 86 is in each case a schematically illustrated Bowden cable 98 provided, which operates on train and pressure and leads in the axial direction to an actuator. This can be a servomotor which is arranged inside the prism or also a manual handle, which is accessible from outside, for example, on the top side of the prism.

The arrangement is taken in such a way that the burner 82 in the retracted state of the burner boxes 84 . 86 (Resting geometry) is located inside the inscribed circle, which the backs of the radiator elements 70 . 72 . 74 equivalent.

In this rest position you can thus through the radiator elements 70 . 72 . 74 and freely rotate its support structure formed prism, and any of the radiating elements 70 . 72 . 74 into the neighborhood of the conveyor of the products.

In this way, the wavelength of the IR radiation, with which the objects 16 change. This change can be during motor rotation of the prism also during operation of the radiator unit 54 realize. It is therefore also possible to heat a project, which is treated immobile in a chamber, with radiation of different wavelengths.

The modified radiator unit 54 to 3 largely corresponds to the one after 2 and therefore need not be described again in detail. Equivalent components are again provided with the same reference numerals.

Instead of a telescopic burner 82 is now an elastically deformable burner 82 intended. This can be formed, for example, by a flexible burner box, in the interior of which an elastic sheet metal is arranged.

Turning at the radiator unit 54 to 3 that through the radiator elements 70 . 72 . 74 formed prism so becomes the burner 82 by grinding on the back of the radiator elements 70 . 72 . 74 bent or buckled (as indicated by dashed lines), so that the prism can be twisted by overcoming an elastic force.

Reach the next of the radiator elements 70 . 72 . 74 one of the conveying direction of the products adjacent working position, so spring the halves of the burner 82 back in the 3 solid reproduced reproduced position in which their ends are adjacent to the lateral vertical edges of the respective active radiator elements.

4 shows a further modified radiator unit 100 , which has the shape of a cylinder. On a the shape of a cylindrical tube having a heating plate 102 are four different radiator layers 104 . 106 . 108 and 110 upset that each extending over an angle of 90 °. The four radiator layers are made of different ceramic materials, which produce IR radiation with different spectrum. The spectra may differ in the location of their center and / or width of the spectral band.

For the in 4 below, the conveying path of the objects to be treated 16 adjacent peripheral portion of the cylindrical heating plate 108 is on the inside of a likewise extending over 90 ° part-cylindrical surface burner 82 provided, which is again designed as a burner box. The burner is again similarly connected to a gas line as with reference to FIG 2 described. Corresponding components are again provided with the same reference numerals.

The emitter unit after 4 allows the average wavelength and / or the bandwidth of the spectrum of the IR radiation with which the objects are applied to be adjusted. For this purpose, only the cylindrical heating plate 102 needs to be adjusted by 90 °, which simply by means of a corresponding to the stub shaft 80 working servo drive is possible.

While with the triangular cross-section prismatic radiator units according to the 2 and 3 the respective active radiator elements can be arranged almost in abutment, as indicated in the figures by the dashed lines side sections of adjacent radiator units are in juxtaposition of radiator units according to 4 given slightly larger distances between the respective active beam surfaces.

However, these distances are tolerable in many cases, because the emitted from the radiator surfaces IR rays are diffuse. Also, you can significantly reduce these distances, if instead of four different radiator materials only three or two different radiator materials on the circumference of the cylindrical heating plate 102 provides.

In the embodiment described above, one could treat objects 16 with IR radiation of different wavelengths only temporally separated or spatially separated make.

With the embodiments according to the 5 and 6 a substantially simultaneous treatment of objects with two different wavelengths is obtained at substantially the same location.

5 shows a radiator element 112 in which a heating plate 114 with different radiator layers 116-1 . 116-2 is provided, which form a checkerboard pattern. The radiator layers 116-1 and 116-2 include ceramic materials that emit IR radiation at different wavelengths and / or bandwidths when heated.

There the IR rays emitted by the radiator layers are diffuse, The IR radiations mix at a distance in front of the radiator element.

If you also wish in the near range the same intensity of the two IR radiations you can the radiator element 112 by a coordinate drive 118 the in 5 is indicated only schematically, move periodically by one division in the horizontal and vertical directions. You then get in front of the radiator element 112 Over the treatment period Averages equal intensities at both wavelengths.

In the further modified radiator element 120 to 6 you have only a single radiator layer 122 , However, this includes, as can be seen from the enlarged detail, ceramic fragments 124 and 126 which provide IR radiation of different wavelengths and / or different bandwidth when heated.

Also in front of the radiator element 120 to 6 Thus, a simultaneous treatment of objects with IR radiation of different wavelengths can be realized.

If you do not want to further reduce the bandwidth of the IR radiation, you can give the emitted by a radiator element IR radiation on a cooled filter element, as in 7 at 128 is shown.

It comprises a good heat-conducting, eg metallic cooling plate 130 with a meandering coolant channel 132 in a coolant circuit 134 is inserted. The coolant channel is a polished surface 136 the cooling plate 130 adjacent, which is a filter layer 138 wearing. This represents a narrow-band pass filter and holds by an incoming IR light beam 140 those portions farther from the center of the spectrum. The reflected light beam 142 thus has a narrower spectral distribution.

The one in the filter layer 138 absorbed part of the incident light beam 140 is converted into heat, which is dissipated via the coolant circuit.

The filter layer 138 As an active material, the mixture of two ceramic materials aufwei sen, which are similar to the emitter element used in the IR radiation generating element, but have slightly shifted absorption bands, wherein the one material is a band 144 and the other stuff is a gang 146 having symmetrically below or above the at 148 shown band of the radiator material is located.

The total extinction of the mixture then has at the wavelength of the mid-band of the emission spectrum, which at 150 is shown a sharp depression, so that at 152 shown hatched part of the emitted light from the filter is transmitted. Its bandwidth is significantly reduced.

In the above, The invention has been described with reference to the drying of products described.

The However, described radiator units can also be to other Use for purposes. You can e.g. heated walls form of combustion chambers in which a regenerative or a thermal Afterburning takes place.

you can also be compact with the IR emitter elements described above heat exchangers build and realize compact heating units. With appropriate Heating units can be e.g. also realize halls or meeting rooms, being advantageous that as well the human has a high water content, so that a corresponding IR heating an effective warming of people with a low energy input.

Also One can such IR radiator elements for heating plants in hothouses use.

In the above, the generation of IR radiation from natural gas as an energy source was described. It goes without saying that one use burners instead of natural gas burners May be with other flammable gases or with liquid fuels be supplied. An electric heater is possible.

In all cases receives a flat, uniform delivery narrowband IR radiation.

A heat treatment can also be a cooling to be of objects. Also for this the invention described above can be used.

Above The invention has also been explained with reference to flow-through devices. she but also alike used in devices in which one or more objects be treated in a closed chamber. Smaller such Chambers can be formed by hoods having a sheet-metal heating wall, the from the outside is heated and on the inside a radiator material layer wear. These IR hoods are easy on the objects to be treated put on a suitable surface.

For the radiator layers in the 2 to 8th shown radiator elements apply in conjunction with 1 made comments on the Strahlerlementen 30 equally, concerning the basic properties of the radiator layer and its production.

Claims (20)

Method for heat treatment of objects, in which the objects are irradiated with IR radiation, characterized in that one uses a narrow-band IR radiation whose spectrum substantially overlaps with at least one absorption band of a material from which the objects at least partially consist. Method according to claim 1, characterized in that that the IR radiation is generated with a radiator material, which is the same Contains atomic groups like the material from which the objects at least partially exist. Method according to claim 2, characterized in that that this Radiator material is selected from the following group: OH group-containing compounds, oxygen-containing compounds, containing other elements of Groups IV to VI of the Periodic Table Compounds which compounds at the working temperatures of the radiator material are thermally stable, in particular oxides, carbides and nitrides, and mixtures of the aforementioned compounds. Method according to one of claims 1 to 3, characterized that the Objects in successive periods of time are different due to IR radiation wavelength and / or different intensity are irradiated. Method according to one of claims 1 to 4, characterized in that the objects are selected from the following group: foods or ingredients for food, vegetables, meat; Workpieces of metal or plastic; Coatings on workpieces, in particular solvent-based or water-based paints and powder paints, enamel; inorganic products such as ceramics, bricks; Powders of metal or inorganic or organic materials; thermoplastic materials; Products made of organic materials such as plants fibers, in particular textiles, or wood, in particular boards; Living things (excluding therapy procedures). Method according to one of claims 1 to 5, characterized that the IR irradiation takes place under an inert gas atmosphere. Device for carrying out the method according to one of Claims 1 to 6, characterized by at least one IR radiation source ( 18 - 26 ; 54 ; 100 ), which a heating plate ( 32 ; 76 ; 102 ; 121 ), a heating unit operating on the heating plate ( 32 ; 82 ) and a radiator material layer carried by the heating plate ( 36 ; 78 ; 104 - 108 ; 116 ; 122 ), which emits IR radiation in a narrow spectral band when heated. Apparatus according to claim 7, characterized in that the radiator material layer ( 36 ; 78 ; 104 - 108 ; 116 ; 122 ) comprises a ceramic material. Apparatus according to claim 7 or 8, characterized in that the heating plate ( 32 ; 82 ) by a flame ( 30 ) is heated. Device according to claim 9, characterized in that the flame ( 30 ) adjustable in intensity ( 38 ; 94 ). Device according to one of claims 7 to 10, characterized in that it comprises a plurality of IR radiation sources ( 18 - 26 ), which in terms of their heating ( 30 . 38 ; 82 . 94 ) and / or its radiator material ( 36 ; 78 ; 104 . 106 . 108 . 110 ; 116 ; 122 ). Device according to one of claims 7 to 11, characterized in that at least one component ( 70 . 72 . 74 ) of a radiation source ( 54 ) is releasably attached. Device according to one of claims 6 to 12, characterized in that at least one component of a radiation source ( 54 ; 100 ) is movable. Device according to one of claims 1 to 13, characterized in that a heating plate ( 102 ; 112 ; 120 ) a plurality of different radiator materials ( 102 . 104 . 106 . 108 ; 116-1 . 116-2 ; 124 . 126 ) wearing. Apparatus according to claim 14, characterized in that the different radiator materials of different surface areas of the heating plate ( 114 ) are worn. Device according to one of claims 13 to 15, characterized in that the heating plate ( 102 ) is formed as a drum. Device according to one of claims 13 to 15, characterized in that a plurality of heating plates ( 76 ) and supported by these different radiator material layers ( 78 ) are arranged on the main surfaces of a rotatable prism which has a triangular, triangular, quadrangular or other polygonal cross-section. Apparatus according to claim 17, characterized in that inside the prism a heating unit ( 82 ) is arranged, the geometry of which is adjustable between a work geometry adjacent to a side surface and a rest geometry allowing a passing of the prism side surface. Device according to one of the claims 7 to 18 characterized by at least one filter ( 128 ), which by a cooling plate ( 130 ) and a filter material layer ( 138 ) is formed. Device according to claim 19, characterized in that the filter material ( 138 ) to the radiator material ( 36 ; 78 ; 102 . 104 . 106 . 108 ; 116-1 . 116-2 ; 124 . 126 ) is similar.