Carbon black low-nitrogen burner

Abstract

The utility model discloses a carbon black low-nitrogen burner which comprises a first pipeline, a second pipeline is fixedly connected to the first pipeline, a third pipeline is connected to the second pipeline in a sealed mode, the third pipeline is located in the second pipeline, a fourth pipeline is connected to the third pipeline in a sealed mode, and the fourth pipeline is located in the second pipeline. A first ignition nozzle is installed on the fourth pipeline, a first rotational flow blade is fixedly connected to the outer wall of the fourth pipeline, an annular stable combustion disc is fixedly connected to the end, away from the fourth pipeline, of the first rotational flow blade, the stable combustion disc is fixedly connected to the inner wall of a third pipeline, and the third pipeline penetrates through the second pipeline. Compared with the prior art, the carbon black low-nitrogen combustor has the advantages that the combustion sufficiency of carbon black tail gas is improved, and the emission of nitrogen oxides is effectively reduced, so that the respiratory tract health of workers can be protected, the air quality can be guaranteed to a certain extent, and the ecological balance can be maintained to a certain extent.

Description

Technical Field

[0001] This utility model belongs to the technical field of carbon black low-NOx burner equipment, and specifically relates to a carbon black low-NOx burner. Background Technology

[0002] Carbon black is an important industrial raw material, widely used in industries such as tires, plastics, and inks. The carbon black tail gas, a byproduct of carbon black production, mainly consists of methane, hydrogen, nitrogen, carbon dioxide, acetylene, and nitrogen oxides. Currently, carbon black tail gas is primarily used for heating, power generation, and other applications through direct combustion, which not only saves energy but also brings economic benefits.

[0003] However, due to the complex composition and large fluctuations in calorific value of carbon black exhaust gas, incomplete combustion leads to high nitrogen oxide emissions. Nitrogen oxides not only harm the respiratory health of factory workers but also severely impact air quality and threaten ecological balance.

[0004] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a carbon black low-NOx burner.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a carbon black low-NOx burner that can solve the above-mentioned problems.

[0007] To achieve the above objectives, a specific embodiment of this utility model provides a carbon black low-NOx burner, including a first pipe, a second pipe fixedly connected to the first pipe, a third pipe sealed to the second pipe, the third pipe being located inside the second pipe, a fourth pipe sealed to the third pipe, a first ignition nozzle installed on the fourth pipe, a first swirl vane fixedly connected to the outer wall of the fourth pipe, an annular stabilizing disc fixedly connected to the end of the first swirl vane away from the fourth pipe, and the stabilizing disc fixedly connected to the inner wall of the third pipe.

[0008] In one or more embodiments of this utility model, a partition is sealed inside the second pipe, and a storage bin is formed between the partition and one end sidewall of the second pipe. The third pipe is provided with a plurality of sixth pipes that are connected to the storage bin. The ends of the plurality of sixth pipes away from the storage bin are fixedly connected to the outer wall of the combustion stabilization plate, and a second ignition nozzle is installed at the end of the sixth pipe near the combustion stabilization plate.

[0009] In one or more embodiments of this utility model, the second ignition nozzle has an injection port facing the first ignition nozzle, and the second pipe is fixedly connected to a fifth pipe that matches the storage bin.

[0010] In one or more embodiments of this utility model, a second swirl vane is fixedly connected to the outer wall of the third pipe, and the second swirl vane is fixedly connected to the inner wall of the second pipe.

[0011] In one or more embodiments of this utility model, a seventh pipe is fixedly connected to the outer wall of the second pipe, an eighth pipe and an eleventh pipe are fixedly connected to the seventh pipe, and a ninth pipe that matches the eighth pipe is fixedly connected to the outer wall of the second pipe, the ninth pipe being located between the eighth pipe and the second pipe.

[0012] In one or more embodiments of this utility model, a third swirl vane is fixedly connected to the inner wall of the eighth pipe, and the end of the third swirl vane away from the eighth pipe is fixedly connected to the outer wall of the second pipe.

[0013] In one or more embodiments of this utility model, the third pipe penetrates the second pipe, and a tenth pipe is fixedly connected to one end of the third pipe penetrating the second pipe, and a flow regulating component is installed on the tenth pipe.

[0014] In one or more embodiments of this utility model, the flow regulating component includes a rotating rod, which is rotatably connected to a tenth pipe. A plug plate matching the inner diameter of the tenth pipe is fixedly connected to the rotating rod, and the rotating rod passes through the tenth pipe.

[0015] In one or more embodiments of this utility model, a fixed plate is fixedly connected to one end of the rotating rod that passes through the tenth pipe, a bolt is fixedly connected to the fixed plate, an adjusting frame that matches the fixed plate is fixedly connected to the tenth pipe, a sliding groove that matches the bolt is opened on the adjusting frame, a nut is threaded onto the bolt, and a scale is provided on the adjusting frame.

[0016] In one or more embodiments of this utility model, a rubber washer that matches the nut is fitted onto the bolt.

[0017] Compared with existing technologies, the carbon black low-NOx burner of this utility model improves the combustion completeness of carbon black exhaust gas, effectively reduces nitrogen oxide emissions, thereby protecting the respiratory health of workers, and to a certain extent ensuring air quality and maintaining ecological balance. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a carbon black low-NOx burner in one embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional view of a carbon black low-NOx burner according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure at the inlet of the eighth pipe of a carbon black low-NOx burner in one embodiment of the present invention.

[0022] Figure 4 This is a partial structural schematic diagram of the sixth pipe of a carbon black low-NOx burner in one embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the flow regulation component of a carbon black low-NOx burner in one embodiment of the present invention.

[0024] Explanation of key figure labels:

[0025] 1. First pipe; 2. Second pipe; 3. Third pipe; 4. Flame stabilizer; 5. First swirl vane; 6. Fourth pipe; 601. First ignition nozzle; 7. Storage bin; 701. Fifth pipe; 8. Sixth pipe; 801. Second ignition nozzle; 9. Second swirl vane; 10. Seventh pipe; 11. Eighth pipe; 12. Third swirl vane; 13. Ninth pipe; 14. Baffle plate; 15. Tenth pipe; 16. Rotating rod; 17. Blocking plate; 18. Fixing plate; 19. Bolt; 20. Nut; 21. Adjusting bracket; 22. Slide groove; 23. Rubber gasket; 24. Eleventh pipe. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0027] like Figures 1 to 4 As shown, a carbon black low-NOx burner according to one embodiment of this utility model includes a first pipe 1, a second pipe 2 welded to the first pipe 1, and a third pipe 3 sealed to the second pipe 2, the third pipe 3 penetrating the second pipe 2 and partially located inside the second pipe 2. A fourth pipe 6 sealed to the third pipe 3, the fourth pipe 6 penetrating the third pipe 3 and partially located inside the third pipe 3. A first ignition nozzle 601 is installed on the fourth pipe 6, a first swirl vane 5 is welded to the outer wall of the fourth pipe 6, and an annular stabilizing disc 4 is welded to the end of the first swirl vane 5 away from the fourth pipe 6, the stabilizing disc 4 being welded to the inner wall of the third pipe 3.

[0028] Specifically, the carbon black exhaust gas flows from the first pipe 1 into the second pipe 2, and then is ejected from the opening of the second pipe 2. Fuel flows through the fourth pipe 6 and is ejected from the first ignition nozzle 601 for combustion. Oxygen for combustion support flows through the third pipe 3. After passing through the first swirl vane 5, the oxygen is swirled and sprayed onto the carbon black exhaust gas ejected from the opening of the second pipe 2. The oxygen and carbon black exhaust gas at the opening of the second pipe 2 are swirled and mixed. The fuel ejected from the first ignition nozzle 601 ignites the carbon black exhaust gas mixed with oxygen, forming a primary combustion zone. This stabilizes the combustion of the carbon black exhaust gas and reduces the problem of high nitrogen oxide emissions.

[0029] Preferably, in the primary combustion zone, the excess air coefficient is 0.7-0.85, ensuring uniform mixing of combustion-supporting oxygen and soot exhaust gas for oxygen-deficient combustion. Throughout the combustion process in the primary combustion zone, the soot exhaust gas is in a reducing atmosphere, and the flame combustion temperature field is uniformly distributed, which reduces the formation of nitrogen oxides during combustion.

[0030] In addition, the combustion-supporting oxygen, after passing through the first swirl blade 5, will be sprayed onto the fuel sprayed at the first ignition nozzle 601, so that the fuel burns more completely and the combustion temperature is higher, thereby enabling the carbon black tail gas to burn completely and further reducing the emission of nitrogen oxides.

[0031] Furthermore, a partition 14 is sealed inside the second pipe 2, and a storage bin 7 is formed between the partition 14 and one side wall of the second pipe 2. The third pipe 3 is provided with a plurality of sixth pipes 8 connected to the storage bin 7. The ends of the plurality of sixth pipes 8 away from the storage bin 7 are welded to the outer wall of the stabilizing plate 4. A second ignition nozzle 801 is installed at the end of the sixth pipe 8 near the stabilizing plate 4.

[0032] Specifically, the storage bin 7 contains co-burning fuel. When the carbon black tail gas is initially ignited, the co-burning fuel in the storage bin 7 is sprayed out through the second ignition nozzle 801. The co-burning fuel and the primary carbon black tail gas burn together. The combustion stops after the carbon black tail gas has stabilized, to prevent the problem of high nitrogen oxide emissions caused by incomplete combustion during the initial combustion of carbon black tail gas.

[0033] Preferably, the co-burning fuel is liquid hydrogen. Liquid hydrogen has a high calorific value, which can better ensure the complete combustion of carbon black exhaust gas. Furthermore, the second ignition nozzle 801 is provided with an injection port facing the first ignition nozzle 601. The liquid hydrogen and the fuel injected at the first ignition nozzle 601 are mixed, which enhances the calorific value of the fuel injected at the first ignition nozzle 601, and makes the carbon black exhaust gas burn more quickly and stably.

[0034] Furthermore, such as Figure 1 and Figure 5 As shown, a tenth pipe 15 is welded to one end of the third pipe 3, which passes through the second pipe 2. A flow regulating assembly is installed on the tenth pipe 15. The flow regulating assembly includes a rotating rod 16, which is rotatably connected to the tenth pipe 15. A plug plate 17, matching the inner diameter of the tenth pipe 15, is welded to the rotating rod 16. The rotating rod 16 passes through the tenth pipe 15 and is sealed to it. Specifically, rotating the rotating rod 16 causes the plug plate 17 to rotate as well, thus controlling the flow rate of combustion oxygen within the rotating rod 16.

[0035] Furthermore, a fixed plate 18 is integrally formed at one end of the rotating rod 16 that passes through the tenth pipe 15. A bolt 19 is welded on the fixed plate 18. An adjusting bracket 21 that matches the fixed plate 18 is welded on the tenth pipe 15. A sliding groove 22 that matches the bolt 19 is opened on the adjusting bracket 21. A nut 20 is threaded onto the bolt 19. A scale is provided on the adjusting bracket 21.

[0036] Specifically, by moving the fixed plate 18, the rotating rod 16 can be rotated. At this time, the bolt 19 slides in the slide groove 22. When the bolt 19 slides to the required opening, the nut 20 is turned clockwise. The nut 20 gradually approaches the adjusting bracket 21. When the nut 20 and the adjusting bracket 21 are in contact, the rotating rod 16 can be fixed.

[0037] Furthermore, a rubber washer 23 matching the nut 20 is fitted onto the bolt 19. The rubber washer 23 not only allows the nut 20 to rotate on the bolt 19, but also enhances the friction between the nut 20 and the adjusting bracket 21.

[0038] In addition, a fifth pipe 701, which is connected to the storage silo 7, is fixedly connected to the second pipe 2. Liquid hydrogen can be replenished into the storage silo 7 through the fifth pipe 701.

[0039] Furthermore, a second swirl vane 9 is welded to the outer wall of the third pipe 3, and the second swirl vane 9 is welded to the inner wall of the second pipe 2. Specifically, when the carbon black exhaust gas is ejected from the opening of the second pipe 2, it will also rotate and be ejected after passing through the second swirl vane 9, which will enhance the mixing with the co-burning fuel and further ensure that the carbon black exhaust gas can be fully combusted.

[0040] Furthermore, a seventh pipe 10 is welded to the outer wall of the second pipe 2, and an eighth pipe 11 and an eleventh pipe 24 are welded to the seventh pipe 10. A ninth pipe 13, matching the eighth pipe 11, is welded to the outer wall of the second pipe 2, and the ninth pipe 13 is located between the eighth pipe 11 and the second pipe 2. A third swirl vane 12 is welded to the inner wall of the eighth pipe 11, and the end of the third swirl vane 12 away from the eighth pipe 11 is welded to the outer wall of the second pipe 2.

[0041] Specifically, a portion of the carbon black exhaust gas in the second pipe 2 flows out from multiple ninth pipes 13, and the eleventh pipe 24 introduces combustion-supporting oxygen into the seventh pipe 10. The combustion-supporting oxygen in the seventh pipe 10 is sprayed out after passing through the third swirl vane 12, and then mixes with the carbon black exhaust gas flowing out from multiple ninth pipes 13 to form a secondary combustion zone. The secondary combustion zone and the primary combustion zone mix and burn to ensure stable combustion.

[0042] Preferably, the excess air coefficient in the secondary combustion zone is 1.23-1.28, the carbon black exhaust gas and the combustion-supporting oxygen are mixed evenly, and oxygen-enriched combustion is carried out. The temperature field is evenly distributed, which greatly reduces the generation of nitrogen oxides during the combustion process.

[0043] During operation, the carbon black exhaust gas is ejected from the opening of the first pipe 1 and mixes with the combustion-supporting oxygen ejected from the third pipe 3. Because the carbon black exhaust gas and the combustion-supporting oxygen pass through the second swirl vane 9 and the first swirl vane 5 respectively, they rotate, ensuring thorough mixing. Simultaneously, the first ignition nozzle 601 ejects fuel and begins combustion, igniting the carbon black exhaust gas mixed with oxygen. This ensures the stability of the carbon black exhaust gas combustion and reduces the problem of excessive nitrogen oxide emissions.

[0044] 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. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-NOx carbon black burner, comprising a first pipe, wherein a second pipe is fixedly connected to the first pipe, characterized in that, A third pipe is sealed to the second pipe, the third pipe is located inside the second pipe, a fourth pipe is sealed to the third pipe, a first ignition nozzle is installed on the fourth pipe, a first swirl vane is fixedly connected to the outer wall of the fourth pipe, an annular stabilizing disc is fixedly connected to the end of the first swirl vane away from the fourth pipe, and the stabilizing disc is fixedly connected to the inner wall of the third pipe.

2. The carbon black low-NOx burner according to claim 1, characterized in that, The second pipe is sealed with a baffle, and a storage bin is formed between the baffle and one side wall of the second pipe. The third pipe is provided with a plurality of sixth pipes that are connected to the storage bin. The ends of the plurality of sixth pipes away from the storage bin are fixedly connected to the outer wall of the stabilizing plate. A second ignition nozzle is installed at the end of the sixth pipe near the stabilizing plate.

3. A carbon black low-NOx burner according to claim 2, characterized in that, The second ignition nozzle has an injection port facing the first ignition nozzle, and a fifth pipe that matches the storage bin is fixedly connected to the second pipe.

4. A carbon black low-NOx burner according to claim 3, characterized in that, A second swirl vane is fixedly connected to the outer wall of the third pipe, and the second swirl vane is fixedly connected to the inner wall of the second pipe.

5. A carbon black low-NOx burner according to claim 1, characterized in that, A seventh pipe is fixedly connected to the outer wall of the second pipe, and an eighth pipe and an eleventh pipe are fixedly connected to the seventh pipe. A ninth pipe, which matches the eighth pipe, is fixedly connected to the outer wall of the second pipe, and the ninth pipe is located between the eighth pipe and the second pipe.

6. A carbon black low-NOx burner according to claim 5, characterized in that, A third swirl vane is fixedly connected to the inner wall of the eighth pipe, and the end of the third swirl vane away from the eighth pipe is fixedly connected to the outer wall of the second pipe.

7. A carbon black low-NOx burner according to claim 1, characterized in that, The third pipe penetrates the second pipe, and a tenth pipe is fixedly connected to one end of the third pipe that penetrates the second pipe. A flow regulating component is installed on the tenth pipe.

8. A carbon black low-NOx burner according to claim 7, characterized in that, The flow regulating component includes a rotating rod, which is rotatably connected to the tenth pipe. A plug plate matching the inner diameter of the tenth pipe is fixedly connected to the rotating rod, and the rotating rod passes through the tenth pipe.

9. A carbon black low-NOx burner according to claim 8, characterized in that, A fixed plate is fixedly connected to one end of the rotating rod that passes through the tenth pipe. A bolt is fixedly connected to the fixed plate. An adjusting bracket that matches the fixed plate is fixedly connected to the tenth pipe. A sliding groove that matches the bolt is opened on the adjusting bracket. A nut is threaded onto the bolt. The adjusting bracket is marked with a scale.

10. A carbon black low-NOx burner according to claim 9, characterized in that, The bolt is fitted with a rubber washer that matches the nut.

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