Hydrogen-ammonia coupling low-nitrogen burner

Abstract

The utility model discloses a hydrogen ammonia coupling low nitrogen burner relates to burner technical field, including first tank and second tank, be equipped with connecting subassembly between the first tank and the second tank, first tank far away from the one end of second tank is fixedly connected with the gas outlet pipe, the gas outlet pipe is communicated with first tank, and the gas outlet pipe is connected with the gas outlet pipe. A combustion assembly is arranged at one end of the gas outlet pipe away from the first tank; through the arrangement of the ammonia gas inlet pipe and the pipe connector, hydrogen and ammonia gas in a specific proportion can be injected into the cavity formed by the first tank body and the second tank body during working, the hydrogen and the ammonia gas are mixed through the premixing assembly and then sprayed out of the nozzle, the combustion temperature can be effectively reduced through the addition of the ammonia gas, NOx generation is reduced, meanwhile, the combustion speed of the ammonia gas is low, and the combustion efficiency is improved. And after the ammonia gas is mixed, the overall combustion speed can be reduced, the combustion stability is improved, so that the combustor has good combustion stability, and meanwhile, the emission of NOx is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to burner technical field, concretely is a kind of hydrogen ammonia coupling low nitrogen burner. BACKGROUND

[0002] Burner is a kind of equipment that material is converted heat energy by the chemical reaction mode of combustion, i.e. air and fuel are mixed by premixing device according to appropriate proportion to make it burn sufficiently. Burner has multiple classification ways according to its different attributes. According to fuel mode, it is divided into oil burner, gas burner, light oil burner and dual-fuel burner.

[0003] Burner is important equipment on industrial oil boiler, gas boiler, it guarantees fuel stable ignition combustion and fuel complete combustion process, pure hydrogen flame temperature is higher when burning, can reach 2000 degrees above and combustion speed is extremely fast, and combustion stability is poor, and too high temperature can easily lead to large amount of generation of thermal NOx, cannot realize the requirement of low NOx emission, for this purpose, we propose a kind of hydrogen ammonia coupling low nitrogen burner to solve the above-mentioned problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of hydrogen ammonia coupling low nitrogen burner to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of hydrogen ammonia coupling low nitrogen burner, including first tank body and second tank body, connecting assembly is equipped between the first tank body and second tank body, the first tank body is fixedly connected with gas outlet pipe at one end away from second tank body, gas outlet pipe is communicated with first tank body, and gas outlet pipe is equipped with combustion assembly at one end away from first tank body;

[0007] The second tank body is equipped with hydrogen gas inlet pipe and ammonia gas inlet pipe at one end away from first tank body, and the hydrogen gas inlet pipe and ammonia gas inlet pipe are communicated with second tank body interior, the hydrogen gas inlet pipe and ammonia gas inlet pipe are equipped with pipe joint at one end away from first tank body, and the second tank body and first tank body interior are equipped with premixing assembly for premixing hydrogen and ammonia.

[0008] As a further scheme of the utility model: the connecting assembly includes two flanges, the flanges are fixedly connected at opposite ends of the first tank body and the second tank body respectively, flange holes are formed in the two flanges, and bolts for locking are arranged between the flange holes of the two flanges.

[0009] As a further scheme of the utility model: the combustion assembly includes a nozzle, the nozzle is installed at the one end of the air outlet pipe far from the first tank body, the one end of the air outlet pipe far from the first tank body is also fixedly connected with a cover body, one side of the cover body is equipped with an igniter, the other side of the cover body is equipped with a temperature sensor.

[0010] As a further scheme of the utility model: the cover body is equipped with a plurality of air inlet holes at the one end close to the nozzle.

[0011] As a further scheme of the utility model: the premixing assembly includes a conical collector, the conical collector is fixedly connected at the one end close to the second tank body in the first tank body, the one end close to the air outlet pipe in the first tank body is fixedly connected with a conical dispersing cover, a plurality of air distribution holes are formed at the edge of the conical dispersing cover.

[0012] As a further scheme of the utility model: the second tank body is equipped with a filter assembly for preventing the nozzle from being blocked.

[0013] As a further scheme of the utility model: the filter assembly includes an inner cylinder, the inner cylinder is slidingly connected in the second tank body, and a filter screen is installed in the inner cylinder.

[0014] As a further scheme of the utility model: flow regulating valves are connected to the hydrogen gas inlet pipe and the ammonia gas inlet pipe, and flow sensors are connected to the positions close to the second tank body of the hydrogen gas inlet pipe and the ammonia gas inlet pipe.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The ammonia gas inlet pipe and the pipe joint are arranged, specific proportion of hydrogen gas and ammonia gas can be injected into the cavity formed by the first tank body and the second tank body during work, and the hydrogen gas and the ammonia gas are mixed by the premixing assembly and sprayed from the nozzle, the addition of the ammonia gas can effectively reduce the combustion temperature and reduce the generation of NOx, the combustion speed of the ammonia gas is slow, the overall combustion speed can be reduced after mixing the ammonia gas, the combustion stability is improved, the burner has good combustion stability and greatly reduces the emission of NOx. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structural schematic diagram of the utility model.

[0018] Figure 2 It is the sectional structure schematic diagram of the cover body in the utility model.

[0019] Figure 3 It is the structural schematic diagram when the inner cylinder and the second tank body are split in the utility model.

[0020] Figure 4It is the cross section structure schematic view of the first tank body in the utility model.

[0021] 1, the first tank body, 2, the second tank body, 3, the flange plate, 4, the igniter, 5, the air inlet hole, 6, the cover body, 7, the air outlet pipe, 8, the hydrogen inlet pipe, 9, the flow regulating valve, 10, the ammonia inlet pipe, 12, the flow sensor, 13, the pipe joint, 14, the temperature sensor, 15, the nozzle, 16, the inner cylinder, 17, the filter screen, 18, the conical collector, 19, the gas distribution hole, 20, the conical dispersion cover. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] Please refer to Figures 1-4 In the embodiments of the utility model, a hydrogen-ammonia coupled low-nitrogen burner includes a first tank body 1 and a second tank body 2, a connecting assembly is arranged between the first tank body 1 and the second tank body 2, the connecting assembly includes a flange plate 3, the flange plate 3 is fixedly connected to the opposite end of the first tank body 1 and the second tank body 2 respectively, flange holes are formed in the two flange plates 3, and bolts for locking are arranged between the flange holes of the two flange plates 3. The flange plate 3 can be used to conveniently connect the first tank body 1 and the second tank body 2, and the flange structure facilitates subsequent disassembly and maintenance.

[0024] One end of the first tank body 1 away from the second tank body 2 is fixedly connected with an air outlet pipe 7, the air outlet pipe 7 communicates with the first tank body 1, and the air outlet pipe 7 is provided with a combustion assembly at the end away from the first tank body 1. The combustion assembly includes a nozzle 15, the nozzle 15 is installed at the end of the air outlet pipe 7 away from the first tank body 1, the end of the air outlet pipe 7 away from the first tank body 1 is also fixedly connected with a cover body 6, one side of the cover body 6 is provided with an igniter 4, and the other side of the cover body 6 is provided with a temperature sensor 14. A plurality of air inlet holes 5 are formed in the end of the cover body 6 close to the nozzle 15. When burning, the nozzle 15 sprays mixed gas, and then the igniter 4 ignites the gas, and under the condition of continuous gas supply, continuous combustion can be realized. The air inlet holes 5 are used for air entering to ensure sufficient combustion.

[0025] The second tank 2 has a hydrogen inlet pipe 8 and an ammonia inlet pipe 10 arranged side by side at the end away from the first tank 1. Both the hydrogen inlet pipe 8 and the ammonia inlet pipe 10 are connected to the interior of the second tank 2. Each of the hydrogen inlet pipe 8 and the ammonia inlet pipe 10 has a pipe connector 13 at the end away from the first tank 1. The second tank 2 and the first tank 1 are equipped with a premixing assembly for premixing hydrogen and ammonia. The premixing assembly includes a conical manifold 18, which is fixedly connected to the interior of the first tank 1 near... One end of the second tank 2 and the end of the first tank 1 near the gas outlet pipe 7 are fixedly connected to a conical dispersion hood 20. The edge of the conical dispersion hood 20 is provided with several gas distribution holes 19. The cavity formed by the first tank 1 and the second tank 2 can mix hydrogen and ammonia. During mixing, the conical collector hood 18 concentrates the gas, and then disperses it again through the conical dispersion hood 20 and the gas distribution holes 19, and then concentrates it again to be discharged from the gas outlet pipe 7. By concentrating, dispersing and concentrating the gas, hydrogen and ammonia can be effectively mixed.

[0026] The second tank 2 is equipped with a filter assembly to prevent the nozzle 15 from clogging. The filter assembly includes an inner cylinder 16, which is slidably connected inside the second tank 2. A filter screen 17 is installed inside the inner cylinder 16. The filter screen 17 can filter the incoming hydrogen and ammonia, intercept impurities in the gas, and prevent impurities from clogging the nozzle 15. At the same time, the two gases are dispersed after passing through and can also play a certain role in mixing.

[0027] Both the hydrogen inlet pipe 8 and the ammonia inlet pipe 10 are connected to flow regulating valves 9, and both the hydrogen inlet pipe 8 and the ammonia inlet pipe 10 are connected to flow sensors 12 near the second tank 2. The flow regulating valves 9 and flow sensors 12 can facilitate the adjustment of the flow rates of hydrogen and ammonia, so that the operator can adjust the mixing ratio of hydrogen and ammonia as needed during use.

[0028] The working principle of this utility model is as follows: During operation, the ammonia inlet pipe 10 and the pipe connector 13 are first connected to the gas supply source through the pipe connector 13. Then, the flow rate of the hydrogen inlet pipe 8 and the ammonia inlet pipe 10 are adjusted through the flow regulating valve 9 to adjust the ratio of hydrogen and ammonia entering. After the hydrogen and ammonia enter the cavity formed by the first tank 1 and the second tank 2, the filter screen 17 can filter the incoming hydrogen and ammonia, intercept impurities in the gas, and prevent impurities from clogging the nozzle 15. At the same time, the two gases are dispersed after passing through, and then the conical collector 18 concentrates the gas. Then, it is dispersed again through the conical dispersion hood 20 and the gas distribution hole 19, and then concentrated and discharged from the gas outlet pipe 7. The gas outlet pipe 7 discharges to the nozzle 15, and the nozzle 15 sprays out the mixed gas. Then, the igniter 4 ignites the gas. Continuous combustion can be achieved under continuous gas supply. The air inlet hole 5 is opened for air to enter to ensure complete combustion.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Although this specification describes embodiments, not every embodiment contains only one technical solution. This method of description is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydrogen-ammonia coupled low-NOx burner, comprising a first tank (1) and a second tank (2), wherein a connecting assembly is provided between the first tank (1) and the second tank (2), characterized in that: The first tank (1) is fixedly connected to a gas outlet pipe (7) at the end away from the second tank (2). The gas outlet pipe (7) is connected to the first tank (1). A combustion assembly is provided at the end of the gas outlet pipe (7) away from the first tank (1). The second tank (2) has a hydrogen inlet pipe (8) and an ammonia inlet pipe (10) arranged side by side at the end away from the first tank (1). Both the hydrogen inlet pipe (8) and the ammonia inlet pipe (10) are connected to the interior of the second tank (2). Both the hydrogen inlet pipe (8) and the ammonia inlet pipe (10) have a pipe joint (13) at the end away from the first tank (1). The second tank (2) and the first tank (1) are equipped with a premixing component for premixing hydrogen and ammonia.

2. The hydrogen-ammonia coupled low-NOx burner according to claim 1, characterized in that, The connecting assembly includes two flanges (3), which are fixedly connected to the opposite ends of the first tank (1) and the second tank (2), respectively. Both flanges (3) have flange holes, and bolts for locking are inserted between the flange holes on the two flanges (3).

3. The hydrogen-ammonia coupled low-NOx burner according to claim 1, characterized in that, The combustion assembly includes a nozzle (15) which is installed at the end of the gas outlet pipe (7) away from the first tank (1). The end of the gas outlet pipe (7) away from the first tank (1) is also fixedly connected to a cover (6). An igniter (4) is provided on one side of the cover (6), and a temperature sensor (14) is provided on the other side of the cover (6).

4. A hydrogen-ammonia coupled low-NOx burner according to claim 3, characterized in that, The cover (6) has several air inlets (5) at one end near the nozzle (15).

5. A hydrogen-ammonia coupled low-NOx burner according to claim 1, characterized in that, The premixing component includes a conical manifold (18), which is fixedly connected to the inside of the first tank (1) near the end of the second tank (2). A conical dispersion hood (20) is fixedly connected to the inside of the first tank (1) near the end of the outlet pipe (7). The edge of the conical dispersion hood (20) is provided with a plurality of air distribution holes (19).

6. A hydrogen-ammonia coupled low-NOx burner according to claim 5, characterized in that, The second tank (2) is equipped with a filter assembly to prevent the nozzle (15) from clogging.

7. A hydrogen-ammonia coupled low-NOx burner according to claim 6, characterized in that, The filter assembly includes an inner cylinder (16) which is slidably connected inside the second tank (2), and a filter screen (17) is installed inside the inner cylinder (16).

8. A hydrogen-ammonia coupled low-NOx burner according to claim 1, characterized in that, Both the hydrogen inlet pipe (8) and the ammonia inlet pipe (10) are connected to flow regulating valves (9), and both the hydrogen inlet pipe (8) and the ammonia inlet pipe (10) are connected to flow sensors (12) near the second tank (2).

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