FUEL NOZZLE SYSTEM

Abstract

A fuel nozzle system is made available, which is arranged essentially in circular manner and is set up in such a manner that it produces a homogeneous leaner mixture on at least one outer ring and a homogeneous richer mixture on at least one inner ring, in particular a fuel/oxidizer mixture.

Claims

1. A burner system having a burner (1) having a housing (2), on which a combustion pipe (3) is arranged, and a combustion chamber (8) wherein the combustion pipe (3) has an opening (4) on the end facing away from the housing (2), and wherein the housing (2) has at least two channels (6, 7) that are separated from one another, and are set up in such a manner that different substances, in particular a fuel and an oxidizer, flow through them, and mix in the combustion chamber (8), wherein the substances empty into a fuel nozzle system (5) that is arranged in essentially circular manner, and is set up in such a manner that it produces a leaner mixture on at least one outer ring (12), by means of first exit nozzles, and a richer mixture on at least one inner ring (13), in particular a fuel oxidizer mixture, by means of second exit nozzles.

2. The burner system according to claim 1, wherein it is set up in such a manner that the leaner mixture produced on the at least one outer ring (12) and the richer mixture produced on the at least one inner ring (13) flow into a common combustion chamber (8).

3. The burner system according to claim 1, wherein it is set up in such a manner that the leaner mixture produced on the at least one outer ring (12) and the richer mixture produced on the at least one inner ring (13) are jointly passed to the combustion.

4. The burner system according to claim 1, wherein it is set up in such a manner that the substances empty into a fuel nozzle system (5) that is arranged in essentially circular manner and has smaller (14) exit nozzles on at least one outer ring (12) and larger exit nozzles (15) on at least one inner ring (13).

5. The burner system according to claim 1, wherein the substances empty into a fuel nozzle system (5) that is arranged in essentially circular manner and has fewer first exit nozzles (14) on at least one outer ring (12) and more second exit nozzles (15) on at least one inner ring (13) than on the other ring (12, 13), in each instance.

6. The burner system according to claim 1, wherein the substances empty into a fuel nozzle system (5) that is arranged in essentially circular manner, wherein a lean mixer can be set on at least one outer ring (12), by means of control and/or regulation devices, valves, flaps, and a richer mixture can be set on at least one inner ring (13).

7. The burner system according to claim 1, wherein the fuel nozzle system (5) is configured in such a manner that the exit direction of the substances, in particular of the oxidizer, can be influenced in targeted manner.

8. The burner according to claim 4, wherein the direction of the substances, in particular of the fuel, can be influenced by means of a slanted position of the first and second exit nozzles (14, 15).

9. The burner system according to claim 1, wherein the fuel nozzle system (5) is configured in such a manner that the velocity of the substances, in particular of the oxidizer, can be influenced in targeted manner.

10. The burner system according to claim 1, wherein the fuel nozzle system (5) is configured in such a manner that the velocity of the substances, in particular of the fuel, can be influenced in targeted manner.

11. The burner system according to claim 1, wherein a plurality of exit openings (14, 15) of the fuel nozzle system (5) are distributed over one or more planes (16, 17).

12. The burner system according to claim 4, wherein the exit nozzles (14, 15), in particular the smaller (14) and larger exit nozzles (15) lie in different planes (16, 17).

13. The burner system according to claim 1, wherein it is set up in such a manner that an at least double-wall pipe (18) is provided between the inner and the outer ring (12, 13), through which pipe the fuel flows.

14. The burner system (1) according to claim 1, wherein it is set up in such a manner that two at least double-wall concentric pipes (18, 18′) are provided, through which the fuel flows.

15. The burner system according to claim 1, wherein a device (21) for ignition of the burner (1) is provided in the cross-section of an at least double-wall pipe (18, 18′).

16. The burner system according to claim 1, wherein a device (21) for monitoring the flame of the burner system is provided in the cross-section of an at least double-wall pipe (18, 18′).

17. The burner system according to claim 1, wherein a central pipe (22) for injection of a further fuel, an inert gas and/or a reduction agent, in particular urea, directly into the combustion chamber (8) is provided in the center of the circular arrangement.

18. The burner system according to claim 1, wherein the fuel nozzle system is produced using an additive production method.

19. The burner system according to claim 1, wherein it is configured to be compatible with commercially available industrial burners.

Description

[0024] In order to make the most simple and widespread use of the new burner possible, it is provided that this burner is configured to be compatible with commercially available industrial burners. Its production can be simplified, or actually made possible, in the first place, by means of additive production methods. In the following, the invention will be explained in greater detail, as an example, using the drawings. These show, in

[0025] FIG. 1 an overall view of the burner, cut in half;

[0026] FIG. 2 an overall view of the fuel nozzle system from the front;

[0027] FIG. 3 an overall view of the fuel nozzle system from the rear;

[0028] FIG. 4 a cross-section through a fuel nozzle system according to the invention, having smaller exit nozzles arranged on an outer ring and larger exit nozzles arranged on an inner ring;

[0029] FIG. 5 a perspective view of the fuel nozzle system;

[0030] FIG. 6 an alternative embodiment;

[0031] FIG. 7 a detail with exit nozzles set at a slant.

[0032] A fuel nozzle system 5 of a burner 1 indicated in general with 1 has a housing 2 having a combustion pipe 3, which has an opening 4 at an end facing away from this housing 2. The housing 2 has two channels 6, 7, separated from one another, through which different substances flow, in particular a fuel and an oxidizer, which mix in a combustion chamber 8, not shown in any detail.

[0033] The fuel nozzle system 5 is arranged essentially in circular manner, and is set up in such a manner that it produces a leaner mixture on at least one outer ring 12 and a richer mixture on at least one inner ring 13, in particular a fuel/oxidizer mixture. For this purpose, it can have smaller exit nozzles 14 on at least one outer ring 12 and larger exit nozzles 15 on at least one inner ring 13.

[0034] Alternatively, fewer exit nozzles 14 can be present on the at least one outer ring 12 and more exit nozzles 15 can be present on the at least one inner ring 13 than on the other ring 12, 13, in each instance.

[0035] The exit direction of the substances, in particular of the fuel, can be influenced in targeted manner by means of setting the exit nozzles 14, 15 at a slant or in some other suitable manner, for example by means of spin elements 9 and/or guide panels 11. Also, it is possible to set a leaner mixture on the outer ring 12 and a richer mixture on the inner ring 13 by means of control and/or regulation devices, valve flaps or the like, which are not shown in any detail. In a similar manner, the velocity of the substances, in particular of the oxidizer and/or fuel, can be influenced in targeted manner.

[0036] In a further embodiment, a plurality of exit openings 14, 15 of the fuel nozzle system 5 is distributed over one or more planes 16, 17.

[0037] In a further embodiment, a pipe 18 having at least a double wall, through which pipe the fuel flows, is situated between the inner and the outer ring 12, 13. Also, at least two concentric pipes 18, 18′, which have at least a double wall and through which the fuel flows can be provided.

[0038] A device 20 for ignition of the burner 1 can be arranged in the cross-section of a pipe 18, 18′ having at least a double wall. Likewise, a device 21 for monitoring the flame of the burner 1 is provided. Finally, it is possible to arrange a central pipe 22 for injection of a further fuel, an inert gas and/or a reduction agent, in particular urea, in the center of the circular arrangement, directly in the combustion chamber 8.

[0039] Of course, the invention is not restricted to the exemplary embodiments shown. Further embodiments are possible without departing from the basic idea.

REFERENCE SYMBOL LIST

[0040] 1 burner [0041] 2 housing [0042] 3 combustion pipe [0043] 4 opening [0044] 5 fuel nozzle system [0045] 6 channel, fuel [0046] 7 channel, oxidizer [0047] 8 combustion chamber [0048] 9 spin element [0049] 11 guide panel [0050] 12 outer ring [0051] 13 inner ring [0052] 14 exit nozzle [0053] 15 exit nozzle [0054] 16 plane [0055] 17 plane [0056] 18 double-wall concentric pipe [0057] 18′ double-wall concentric pipe [0058] 20 ignition [0059] 21 flame monitoring [0060] 22 central pipe