System and method for manufacturing mineral and / or plant fiber continuous felt

Abstract

The invention relates to a system (SYSR) for cross-linking a continuous felt of mineral and / or plant fibers, comprising a cross-linking oven (14) for said felt, comprising at least one heating box, each heating box being connected to a combustion chamber. The cross-linking system further includes an "injection" system (SYSI) disposed outside the cross-linking oven and configured to inject hot air into at least one combustion chamber of the heating box such that the injected hot air replaces a given fraction of hot air generated by a burner attached to the at least one combustion chamber, the fraction is between 20% and 100%, for example between 30% and 95%, more particularly between 40% and 80%.

Description

Technical Field

[0001] The invention belongs to the general field of manufacturing thermal and / or acoustic insulation products. More specifically, the invention relates to a system for crosslinking continuous mats of mineral and / or plant fibers, especially mineral wool, of the glass or rock wool type. Such mats are intended to be cut to form, for example, thermal and / or acoustic insulation panels or rolls. The invention also relates to a crosslinking method implemented by such a crosslinking system. Background Art

[0002] Traditionally, the manufacture of insulating fiber mats consists primarily of fiberizing and depositing the fibers onto a perforated moving conveyor or transporter. The newly formed fiber pile is pressed onto the conveyor using a suction box arranged below the conveyor, and the fibers are deposited onto the conveyor. During the fiberizing process, a binder is injected onto the stretched fibers as a solution or suspension in a volatile liquid such as water, which binder has adhesive properties and generally comprises a heat-curable material such as a thermosetting resin.

[0003] The main layer of relatively loose fibers collected on the conveyor is then transferred to a heating device, which in the field in question is generally called a crosslinking oven. Since the conveyors face each other, pressing the fiber mat between them, and the distance between them is adjustable, a continuous fiber mat passes through the entire length of the oven. This mat therefore has a greater or lesser density, depending on the degree of compression applied by the two conveyors in the oven.

[0004] During its passage through the ovens, the felt is simultaneously dried and subjected to a specific thermal treatment which causes the polymerization (or “curing”) of the thermosetting resin of the binder present on the surface of the fibers.

[0005] The procedure for curing the adhesive consists in passing heated air through the entire thickness of the felt, in such a way that the adhesive present throughout the thickness of the felt itself gradually reaches a temperature above its curing temperature.

[0006] To this end, the crosslinking oven consists of a casing forming a closed chamber in which a series of boxes are arranged. Each box is supplied with hot air by a combustion chamber to which at least one burner is attached and to which a fan supplies air and circulates the hot air generated by the burner.

[0007] Each box thus defines an independent heating zone in which specific heating conditions are set. The boxes are separated by walls having openings for the felt and the upper and lower conveyors. The use of multiple boxes advantageously allows the temperature of the felt to be raised gradually and in a better controlled manner throughout its passage through the ovens and prevents the occurrence of hot spots due to local overheating or, alternatively, the presence of areas within the felt where the binder has not been fully polymerized.

[0008] In practice, the operation and use of cross-linking ovens are subject to various constraints. Among these constraints, operational safety is a key factor and constitutes a regulatory framework that is binding on every operator. In particular, there are many risks that need to be controlled, including the risk of heat accumulation inside the oven and the risk of explosion associated with flammable substances (such as volatile organic compounds) generated during the cross-linking operation.

[0009] In addition to these conventional safety constraints, there are now other constraints. The crosslinking ovens used to date consume a large amount of energy. The energy consumed comes almost entirely from the gas required for the burner to supply the heating box with hot air. The production of insulating fiber mats is therefore a particularly high emitter of greenhouse gases such as CO2, which is problematic not only in terms of environmental protection but also in terms of controlling production costs (gas prices can fluctuate greatly). Summary of the invention

[0010] The object of the present invention is to remedy some or all of the disadvantages of the prior art, in particular those mentioned above, by proposing a solution which makes it possible to manufacture insulating fiber mats safely while reducing the gas consumption compared to the solutions of the prior art and while maintaining excellent energy efficiency. In particular, the present invention thus makes it possible to meet current environmental protection requirements by offering the possibility of limiting greenhouse gas emissions during the manufacture of insulating fiber mats.

[0011] To this end, and according to a first aspect, the invention relates to a system for crosslinking a continuous mat of mineral and / or vegetable fibers, comprising a crosslinking oven for said mat, the oven comprising at least one heating box, each connected to a combustion chamber. The crosslinking system also comprises an "injection" system, arranged outside the crosslinking oven and configured to inject hot air into at least one combustion chamber of the heating boxes, such that the injected hot air replaces a given fraction of the hot air generated by at least one burner attached to said at least one combustion chamber, the fraction being between 20% and 100%, for example between 30% and 95%, more particularly between 40% and 80%.

[0012] The plant fibers are preferably selected from the group consisting of lignocellulosic fibers and cotton fibers. The lignocellulosic fibers are preferably selected from wood fibers, hemp fibers, flax fibers, sisal fibers, cotton fibers, jute fibers, coconut fibers, raffia fibers, abaca fibers, cereal straw or rice straw.

[0013] In this way, the hot air injected into the combustion chamber with the aid of the injection system replaces part of the hot air that would (nominally) be produced by at least one burner in the absence of external energy input (i.e. the hot air produced by the gas circulating in the heating box and used exclusively by at least one burner, or, in other words, the hot air produced by at least one burner before the injection system was put into operation).

[0014] The choice of the value of the fraction may depend on how the cross-linking system operates. As a non-limiting example, the value of the fraction may be set so that the flow of hot air injected via the injection system replaces (displaces) part of the nominal flow of hot air circulating in the at least one heating box. Of course, the control of the injection system, and therefore not to mention the choice of the value of the fraction, may be carried out according to further considerations, such as, for example, considerations in terms of the energy or power supplied by at least one burner of the at least one heating box (i.e. the purpose is to replace (displace) part of this energy / power due to the hot air injected by the injection system).

[0015] Generally speaking, the operational safety of a curing oven is ensured by the supply of hot air that sweeps through the heating box(es).

[0016] Furthermore, by supplying hot air from outside the curing oven, the invention offers the advantage of limiting gas consumption and therefore ultimately greenhouse gas emissions (e.g. hot air generated by "green" electricity, i.e. electricity generated by low CO2 emitting energy sources such as renewable or nuclear energy).

[0017] In particular, the inventors estimate that, thanks to the present invention, the gas demand of a cross-linking oven can be reduced by 50% to 70%, resulting in significant amounts of greenhouse gases not being released into the atmosphere.

[0018] This possibility of reducing the gas demand is also advantageous, as it is more likely to limit the generation of combustion gases within the oven. This makes the crosslinking system safer to use, as such combustion gases can also accumulate in addition to emissions from the adhesive used.

[0019] The inventors have also found that this replacement of part of the gas with hot air produced by the injection system has little effect on the energy efficiency normally achieved during felt manufacturing (typically a drop of 3% to 4%, mainly due to heat losses on the walls between the injection system and the crosslinking oven).

[0020] Another advantage of the present invention is that the injection system can be easily installed on an existing overall equipment. For example, the injection system can be located on the floor near the crosslinking oven hood, or located at a high place, such as on a dedicated walkway.

[0021] Furthermore, the external location of the injection system protects it from any contamination arising from the crosslinking oven (e.g. particle release) which could lead to blockages that could limit its efficiency or even be fatal to its operation and could therefore be the cause of operating safety problems (e.g. fire in case of resistor blockage).

[0022] Finally, it is important to note that the crosslinking system according to the present invention has a particularly advantageous application in the case of using a bio-source adhesive. In fact, the injection of hot air means that the curing air is drier, so that a considerable proportion of the dilution water used to make the bio-source adhesive sprayable on the felt fibers can be discharged. This advantage also applies to the case of adhesives obtained by esterification, where a very large proportion of water from the reaction can be discharged. In other words, the present invention makes it possible to improve the drying / curing capacity (and therefore improve energy consumption and CO2 emissions).

[0023] By "biogenic" binder is meant here a binder which is derived partly or wholly from biomass. For example, it is a phenolic binder or an alternative binder with a low formaldehyde content, preferably even formaldehyde-free, such binders are sometimes referred to as "green binders", especially when they are at least partly derived from renewable raw material bases, especially plant bases, especially of the type based on hydrogenated or non-hydrogenated sugars.

[0024] In certain embodiments, the cross-linking system may further include one or more of the following features alone or in any technically feasible combination.

[0025] In a particular embodiment, the injection system comprises a heating device, such as an electric heating device, configured to heat the ambient air to a given temperature.

[0026] In a particular embodiment, said given temperature is between 500°C and 2000°C, more particularly between 700°C and 1900°C, or even between 1000°C and 1900°C, even more particularly substantially equal to 1800°C.

[0027] In a particular embodiment, the heating device comprises at least one battery having a rated power between 100 kW and 900 kW, more particularly between 500 kW and 700 kW, for example substantially equal to 600 kW.

[0028] In a particular embodiment, the injection system is supplied with preheated air.

[0029] In certain embodiments, at least some of the preheated air comes from a glass furnace and / or corresponds to recycled hot air.

[0030] In a particular embodiment, the injection system is connected to a hot air emergency exhaust port located between the injection system and the cross-linking oven.

[0031] In certain embodiments, the injection system is configured to inject hot air from outside the cross-linking oven.

[0032] In a particular embodiment, the injection system comprises a hot air supply line between a hot air source external to the cross-linking oven and the at least one combustion chamber.

[0033] According to a second aspect, the invention relates to a production line for manufacturing a continuous mineral and / or plant fiber mat, comprising a unit for fiberizing a continuous mineral and / or plant fiber mat, a conveyor for transporting the mat and a crosslinking system according to the invention.

[0034] According to a third aspect, the invention relates to a method for crosslinking a continuous mat of mineral and / or plant fibers, said method being implemented by means of a crosslinking system according to the invention.

[0035] According to a fourth aspect, the invention relates to a method for producing a continuous mat of mineral and / or vegetable fibers, said method being implemented by means of a production line according to the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Other features and advantages of the present invention will emerge from the non-limiting description given below, with reference to the accompanying drawings which show exemplary embodiments of the present invention. In the drawings:

[0037] Figure 1 A particular embodiment of a production line for manufacturing a continuous mineral fiber mat according to the invention is schematically shown in its environment;

[0038] Figure 2 Schematically shows the Figure 1 A specific embodiment of the cross-linking system according to the invention of the production line. DETAILED DESCRIPTION

[0039] Figure 1 A specific embodiment of a production line L_FAB according to the invention is schematically shown in its environment.

[0040] The production line L_FAB is configured to manufacture continuous mineral fiber mats, more specifically fiber mats based on glass wool, it being understood that the production line L_FAB is of any type suitable for producing products based on mineral fibers and possibly plant fibers. Figure 1 A first step of manufacturing the felt is disclosed.

[0041] Traditionally, a L_FAB production line comprises a fiberizing unit 1 configured to implement an internal centrifugal fiberizing process known per se. The fiberizing unit 1 comprises a hood ( Figure 1Each centrifuge 2 includes a drum ( Figure 1 ) and a plate-like component 3, the peripheral wall of the plate-like component 3 is provided with a large number of openings.

[0042] In operation, molten glass is fed from a furnace (not shown) in the form of strands 4 and is first collected in the centrifuge drum 2, escaping through the orifices of the plate 3 in the form of a plurality of rotating filaments. The centrifuge 2 is also surrounded by an annular burner 5 which produces, at the periphery of the walls of the centrifuge 2, a gas flow of high velocity and sufficiently high temperature to draw the glass filaments into fibers in the form of a web 6.

[0043] A heating device 7, such as an inductor(s), is used to keep the glass and the centrifuge 2 at the correct temperature. Figure 1 As shown by the arrow 8, the web 6 is closed by a stream of pressurized air. The annulus 6 thus formed is surrounded by a sizing spray device containing a thermosetting binder in an aqueous solution. Figure 1 Only two of the elements 9 are shown.

[0044] This may be, for example, a phenolic binder or an alternative binder with a low formaldehyde content, preferably even formaldehyde-free, which is sometimes referred to as a "green binder", especially when it is at least partly derived from a renewable raw material base, especially a plant base, especially of the type based on hydrogenated or non-hydrogenated sugars.

[0045] The bottom of the fiberizing hood is formed by a fiber receiving device, which includes a conveyor combined with an air-permeable and water-permeable endless belt 10, below which a suction box 11 is arranged for gases from the fiberizing process disclosed above, such as air, smoke and excess aqueous composition. Thus, a glass wool fiber mat 12 intimately mixed with the sizing composition is formed on the conveyor belt 10. According to the invention, the mat 12 is conveyed to the crosslinking system SYS_R by the conveyor 10.

[0046] Figure 2 Schematically shows the Figure 1 A specific example of the crosslinking system SYS_R of the production line L_FAB is shown.

[0047] like Figure 2 As shown, the cross-linking system SYS_R comprises a cross-linking oven 14 for thermosetting adhesives. The cross-linking oven 14 comprises a series of heating boxes separated from each other by insulating walls.

[0048] More specifically, in the embodiment disclosed herein, there are five heating boxes 21 to 25 .

[0049] The use of multiple boxes enables the fiber mat 12 to be gradually heated to a temperature above the curing temperature of the binder present on the fibers of the mat 12. The mechanical properties of the final product depend on perfect temperature control in the various boxes, especially if a green binder is used, as described above.

[0050] However, the fact that five drums are considered does not constitute a limitation of the invention. Generally speaking, there are no limitations in this respect.

[0051] Each box 21 to 25 comprises a central compartment 21_CC to 25_CC forming the casing of said box and surrounded by insulating material.

[0052] The housing of each box 21 to 25 is crossed by two conveyors 18A, 18B for transporting and calibrating the felt 12. These conveyors 18A, 18B are driven in rotation, for example, by motors placed on the ground (not shown in the figures) and are formed in a known manner by a series of trays consisting of grids hinged together and perforated for ventilation.

[0053] The conveyors 18A, 18B generally compress the felt 12 to a desired thickness while ensuring the passage of hot air which promotes rapid setting of the adhesive.

[0054] For example, for rolled panels this is usually between 10 and 450 mm, the density of the glass wool layer being for example between 5 and 150 kg / m3. Thus, for example, a distinction is made between so-called low-density products with a density varying between 5 and 20 kg / m3 and so-called high-density products with a density varying between 20 and 150 kg / m3.

[0055] The mineral wool felt 12 sprayed with adhesive first enters an inlet airlock 17A equipped with a fume extraction hood 19A, which is connected to a dedicated fume treatment circuit (not shown). In this first inlet airlock 17A, the hot air introduced into the felt 12 first evaporates the residual water present in the fiber felt 12.

[0056] Additional fumes generated in the boxes 21 to 25 are typically exhausted through the hood 19B into the outlet damper 17B.

[0057] It is important to note that considering the hoods 19A and 19B arranged at the inlet and outlet of the crosslinking system SYS_R is only one embodiment variant of the invention. Any other variant known to a person skilled in the art can be envisaged, such as a variant of arranging the hood substantially in the center of the crosslinking oven 14.

[0058] Usually, if Figure 2As shown, each heating box 21 to 25 is connected to (i.e. fluidly connected to) a combustion chamber 31 to 35. Each combustion chamber 31 to 35 supplies hot air to the associated heating box 21 to 25, which is heated by a burner ( Figure 2 (not shown) (it can be understood that the burner body is located outside the combustion chamber) and is passed through a fan ( Figure 2 (not shown) cycle.

[0059] It should be noted that it is assumed here that each combustion chamber 31 to 35 is equipped with a single burner. Of course, these provisions are by no means limiting to the present invention, because each combustion chamber 31 to 35 can be equipped with one or more burners, which is well known to those skilled in the art.

[0060] Each burner is supplied with gas and combustion air by a gas line 26 in order to produce hot air for heating boxes 21 to 25 connected to combustion chambers 31 to 35 with which the burner is engaged. This gas supply is Figure 2 Indicated by arrow F1.

[0061] As a non-limiting example, the combustion chambers 31 to 35 are set at a temperature between 200° C. and 250° C. (or even up to 300° C.), for example equal to 210° C., 215° C., 225° C., etc.

[0062] In reference Figure 2 In the disclosed embodiment, each heating box 21 to 25 comprises a hot air recirculation line in fluid communication with the combustion chamber 31 to 35. For example, it is envisaged that this recirculation circuit is coupled to at least one radial turbine adapted to inhale hot air and / or an additional heating device located in the housing 31 to 35 of the heating box 21 to 25. For example, such an embodiment is described in detail in document WO2016203170. Note that in Figure 2 Only a portion of the recirculation loop is disclosed in the form of a recirculation line 40 .

[0063] Although it is considered here that the hot air circulation is realized by a recirculation loop, it is important to note that this is only an embodiment variant of the present invention. Therefore, this does not exclude the possibility of other embodiments, such as, for example, an embodiment in which hot air is introduced into the heating boxes 21 to 25 from below (or from above) and discharged from above (or from below), so the hot air circulation in the heating boxes 21 to 25 is realized by an inlet cover and an outlet cover system. Such an embodiment is also disclosed in the aforementioned document WO2016203170.

[0064] Typically, the crosslinking oven 14 includes an outer insulating jacket 50 surrounding all of the chambers 21 to 25 (for clarity of illustration, only the outer insulating jacket 50 is shown). Figure 1In most cases, the outer insulating sleeve 50 itself surrounds the first metal cover (not shown in the figure) to ensure the sealing of the entire device so that the polluted gas can only be discharged from the device through the covers 19B and 19A.

[0065] According to the invention, the crosslinking system SYS_R comprises, in addition to the crosslinking oven 14 , a so-called “injection” system SYS_I arranged outside said oven 14 .

[0066] “Arranged outside the oven 14 ” means that the injection system SYS_I is located outside the housing 50 of the oven 14 .

[0067] Basically, there is no limitation on the location of the system SYS_I as long as it is located outside the oven 14. For example, the system SYS_I may be located on the floor near the enclosure of the oven 14, or located at a high place, such as on a dedicated walkway.

[0068] The injection system SYS_I is configured to inject hot air into at least one combustion chamber 31 to 35 (and therefore not to mention into at least one heating box 21 to 25), such that the injected hot air replaces a given fraction of the hot air produced by a burner attached to (engaged with) said at least one combustion chamber 31 to 35, said fraction being between 20% and 100%, for example between 30% and 95%, more specifically between 40% and 80%.

[0069] In other words, the hot air injected into the combustion chambers 31 to 35 by the SYS_I system replaces all or part of the hot air nominally produced by the burners (that is to say, the hot air circulating in the heating boxes 21 to 25 and produced exclusively by the gases used by the burners).

[0070] More specifically, in the embodiment disclosed here, a fractional value is set so as to replace (substitute) a given portion of the energy / power supplied by the burners of the at least one combustion chamber 31 to 35 with the hot air injected by the injection system SYS_I.

[0071] The injection system SYS_I is configured to inject hot air from outside the oven 14 .

[0072] In other words, the source of hot air is external to the oven.

[0073] The injected hot air is separated from the gases recirculated by the combustion chamber recirculation circuits 31 to 35 .

[0074] exist Figure 2In the embodiment shown, the injection system SYS_I is configured to inject hot air into the recirculation circuit of each of the combustion chambers 31 to 35, more specifically at the inlet of said combustion chambers 31 to 35. This injection of hot air is Figure 2 Indicated by arrow F2.

[0075] The fact that hot air can be injected at the inlet of each combustion chamber 31 to 35 in a recirculation loop does not mean that this is permanently the case. Figure 2 As shown, the injection system SYS_I may include a balancing valve 60, which is arranged between the hot air supply line 70 of the system SYS_I and the combustion chamber. Each balancing valve 60 is controllable so as to allow, for example, hot air to be supplied to a given combustion chamber 31 to 35 within a given time period. One or more balancing valves 60 may be automatically controlled (i.e. programmed).

[0076] An inlet of the hot air supply line 70 is in fluid communication with the exterior of the oven 14 .

[0077] The hot air supply line 70 is configured to supply hot air from the outside of the oven 14 .

[0078] Of course, embodiments may also be envisaged in which one or more combustion chambers 31 to 35 are not connected to line 70 , so that they cannot be supplied with hot air from system SYS_I.

[0079] exist Figure 2 In the embodiment shown, in order to generate the hot air intended to be injected to replace a given fraction of the hot air generated by the burner, the injection system SYS_I comprises an electric heating device 80 configured to heat the ambient air to a given temperature.

[0080] As a non-limiting example, said given temperature is between 500°C and 2000°C, more particularly between 700°C and 1900°C, or even between 1000°C and 1900°C, even more particularly substantially equal to 1800°C.

[0081] It should be noted here that the temperatures envisaged are much higher than the set temperatures of the combustion chambers cited above as examples, so that taking into account the examples of injection fractions also cited above (and more specifically the examples of fractions strictly below 100%), the hot air injection performed by the system SYS_I can be considered as a low-volume thermal “boost” provided at the combustion chambers 31 to 35.

[0082] The electric heating device 80 can, for example, comprise at least one battery having a rated power between 100 kW and 900 kW, more specifically between 500 kW and 700 kW, for example substantially equal to 600 kW, said at least one battery making it possible to supply, for example, one or more resistors (not shown in the figures) capable of heating the ambient air to a desired temperature.

[0083] In a more specific example, the number of batteries is equal to the number of heating boxes in the oven 14 .

[0084] It will be clear to a person skilled in the art that this value of electrical power does not limit the invention. Likewise, the number of batteries used does not limit the invention, this number depending in particular on the envisaged temperature of the hot air injected, but also on the volume / fraction of hot air to be considered, this last aspect being related to the number of heating boxes intended to be connected to the injection system SYS_I through their respective combustion chambers.

[0085] Of course, in order to ensure that the hot air generated by the electric heating device 80 is delivered to the combustion chambers 31 to 35 , the injection system SYS_I further comprises an air circulation device 90 .

[0086] For example, and if Figure 2 As shown in FIG. 8 , the air circulation device 90 includes a fan 90 configured to circulate air in the hot air supply line 70 .

[0087] It should be noted that the electric heating device 80 for producing hot air is considered to be only one variant of the invention. In this respect, other variants for obtaining hot air can still be envisaged, optionally in combination with the use of the electric heating device 80.

[0088] For example, preheated air may be supplied to the injection system SYS_I. At least some of the air preheated in this way may, for example, come from a furnace producing molten glass for the fiberizing unit 1 (e.g., hot air from flue gases produced by an air-gas furnace, an oxygen furnace, etc.) and / or may correspond to recycled hot air (e.g., air from one or more compressors and / or one or more exchangers arranged outside the oven 14, etc.). In general, any preheated air derived from unavoidable energy may be considered.

[0089] In the embodiments disclosed herein, Figure 2 As shown, the injection system SYS_I is also connected to an emergency hot air exhaust port 100 (also called an "emergency chimney") located between the system SYS_I and the crosslinking oven 14. More specifically, Figure 2As shown, the connection between the system SYS_I and the emergency exhaust port 100 is made via an exhaust line 110 equipped with a balancing valve 120. This configuration is optional and has the advantage, in particular (but not exclusively), of avoiding any heat accumulation detrimental to the operation of the cross-linking system SYS_C when preheated air is supplied to the system SYS_I.

[0090] It should be noted that the present invention does not only relate to the crosslinking system SYS_C and the production line L_FAB. The present invention also relates to a method for crosslinking a felt 12 using the crosslinking system SYS_C. The crosslinking method comprises in particular a step of heating the felt 12 in each of the heating boxes 21 to 25, it being understood that all or some of these heating steps (depending on whether all or some of the heating boxes 21 to 25 are connected to the system SYS_I) are carried out by supplying hot air from the system SYS_I.

[0091] Finally, the invention also relates to a method for manufacturing a felt 12 implemented by the production line L_FAB. This method comprises in particular the method already described above with reference to Figure 1 The first manufacturing step is disclosed, as well as the steps performed as part of the cross-linking method described above.

Claims

1. A crosslinking system (SYS_R) for continuous felt of mineral and / or plant fibers, comprising a crosslinking oven (14) for said felt, said crosslinking oven comprising at least one heating box, each of which is connected to a combustion chamber, said crosslinking system being characterized in that it also comprises an "injection" system (SYS_I) arranged outside said crosslinking oven and configured to inject hot air into at least one combustion chamber of the heating boxes, such that said injected hot air replaces a given fraction of the hot air generated by a burner attached to said at least one combustion chamber, said fraction being between 20% and 100%, for example between 30% and 95%, more particularly between 40% and 80%.

2. The crosslinking system (SYS_R) according to claim 1, wherein: The injection system (SYS_I) comprises a heating device, such as an electric heating device (80), which is configured to heat the ambient air to a given temperature.

3. The crosslinking system (SYS_R) according to claim 2, wherein: Said given temperature is between 500°C and 2000°C, more particularly between 700°C and 1900°C, or even between 1000°C and 1900°C, even more particularly substantially equal to 1800°C.

4. The crosslinking system (SYS_R) according to any one of claims 2 to 3, wherein: The heating device comprises at least one battery having a rated power between 100 kW and 900 kW, more particularly between 500 kW and 700 kW, for example substantially equal to 600 kW.

5. The crosslinking system (SYS_R) according to any one of claims 1 to 4, wherein: The injection system is supplied with preheated air.

6. The crosslinking system (SYS_R) according to claim 5, wherein: At least part of the preheated air comes from a glass melting furnace and / or corresponds to heat recovery air.

7. The crosslinking system (SYS_R) according to any one of claims 1 to 6, wherein: The injection system (SYS_I) is connected to a hot air emergency exhaust port (100) located between the injection system and the cross-linking oven (14).

8. The crosslinking system (SYS_R) according to any one of claims 1 to 7, wherein The injection system (SYS_I) is configured to inject hot air from outside the cross-linking oven (14).

9. The crosslinking system (SYS_R) according to any one of claims 1 to 8, wherein: The injection system (SYS_I) comprises a hot air supply line (70) between a hot air source external to the crosslinking oven (14) and the at least one combustion chamber.

10. A production line (L_FAB) for producing a continuous mat of mineral and / or plant fibers, comprising a unit (1) for fiberizing a continuous mat of mineral and / or plant fibers, a conveyor for transporting the mat and a crosslinking system (SYS_R) according to any one of claims 1 to 9.

11. A method for crosslinking a continuous mat of mineral and / or plant fibers, said method being performed by means of a crosslinking system (SYS_R) according to any one of claims 1 to 10.

12. A method for producing a continuous mat of mineral and / or plant fibers, said method being implemented by means of a production line (L_FAB) according to claim 10.

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