A new type of low-nitrogen efficient organic waste gas burner

Abstract

The application relates to the technical field of waste gas treatment, and particularly discloses a novel low-nitrogen efficient organic waste gas burner, which comprises a waste gas cavity, a first waste gas nozzle, a second waste gas nozzle and a waste gas outlet hole which are sequentially arranged from outside to inside at the gas outlet side of the waste gas cavity; an air cavity, an air spiral gas outlet being arranged at the gas outlet side of the air cavity; a waste liquid cavity, the waste liquid cavity being arranged through the inside of the waste gas cavity, and a waste liquid nozzle being arranged at the gas outlet side of the waste liquid cavity; and a natural gas inlet pipe, the natural gas inlet pipe being arranged through the inside of the waste gas cavity, and a natural gas ignition nozzle being arranged at the gas outlet side of the natural gas inlet pipe. The novel low-nitrogen efficient organic waste gas burner disclosed by the application optimizes the combustion environment from the source by means of multi-medium layered supply and spiral mixing design, reduces local high-temperature and low-temperature areas, and reduces the generation of nitrogen oxides and the risk of pollutant residue.

Description

Technical Field

[0001] This application relates to the field of waste gas treatment technology, and in particular to a novel low-nitrogen, high-efficiency organic waste gas burner. Background Technology

[0002] In industrial production processes, various waste gases are inevitably generated due to fuel combustion and production steps. Commonly used industrial waste gas treatment methods include absorption, adsorption, combustion, and biological treatment. Among these, combustion is relatively widely used and has a better treatment effect. However, current waste gas combustion treatment equipment still has some drawbacks. For example, the main equipment used in current combustion methods is mostly incinerators, which have the following problems: uneven temperature distribution inside the furnace, with temperatures at the flame reaching over 1300℃. At this temperature, nitrogen in the air reacts with oxygen to produce nitrogen oxides, resulting in excessive nitrogen oxide concentrations in the exhaust. The temperature outside the flame is lower, making it easy for organic waste gases to undergo pyrolysis instead of combustion, resulting in excessive pollutant concentrations in the exhaust. Uneven pressure distribution inside the furnace can easily lead to backfire, which can then induce an explosion, posing a certain safety risk. Utility Model Content

[0003] The purpose of this application is to provide a novel low-nitrogen, high-efficiency organic waste gas burner to solve the above-mentioned problems.

[0004] To achieve the above objectives, the technical solution of this application is as follows: A novel low-NOx, high-efficiency organic waste gas burner, comprising: The exhaust gas chamber is provided with a first exhaust gas nozzle, a second exhaust gas nozzle, and an exhaust gas outlet hole in sequence from the outside to the inside on the exhaust gas outlet side. An air cavity, wherein the air outlet side of the air cavity is provided with an air spiral outlet; A waste liquid chamber is provided through the interior of the waste gas chamber, and a waste liquid nozzle is provided on the gas outlet side of the waste liquid chamber; A natural gas inlet pipe is installed inside the exhaust gas chamber, and a natural gas ignition nozzle is provided on the outlet side of the natural gas inlet pipe.

[0005] Preferably, the air cavity includes a first air cavity and a second air cavity; The first air chamber covers the outside of the waste liquid chamber, and the first air chamber has a first air spiral outlet on the air outlet side. The first air spiral outlet is located in the annular area between the waste gas outlet and the waste liquid nozzle. The second air chamber covers the outside of the exhaust gas chamber. The exhaust side of the second air chamber is provided with a second air spiral outlet and an air outlet hole. The second air spiral outlet is located in the annular area where the second exhaust gas nozzle is located.

[0006] Preferably, the exhaust gas chamber is provided with an exhaust gas inlet pipe on the air inlet side; the first air chamber is provided with a first air inlet pipe on the air inlet side; the second air chamber is provided with a second air inlet pipe on the air inlet side; and the waste liquid chamber is provided with a waste liquid inlet pipe on the air inlet side.

[0007] Preferably, the burner is provided with a first layer, a second layer, a third layer, a fourth layer and a fifth layer from the outside to the inside along the gas outlet side; The first exhaust gas nozzle is disposed in the first layer; the second air spiral outlet, the air outlet, the second exhaust gas nozzle, and the natural gas igniter are disposed in the second layer; the exhaust gas outlet is disposed in the third layer; the first air spiral outlet is disposed in the fourth layer; and the waste liquid nozzle is disposed in the fifth layer. The first layer protrudes towards the air outlet side more than the second layer, the second layer protrudes towards the air outlet side more than the third layer, the third layer is flush with the fourth layer, and the fifth layer protrudes towards the air outlet side more than the fourth layer.

[0008] Preferably, the ends of the first air spiral outlet and the second air spiral outlet are provided with inclined baffles.

[0009] Preferably, the first exhaust gas nozzle and the second exhaust gas nozzle are multi-hole exhaust gas nozzles.

[0010] Preferably, the waste liquid nozzle is a fine atomizing nozzle.

[0011] Preferably, the exhaust gas inlet pipe is provided with a natural gas interface for auxiliary combustion.

[0012] The novel low-NOx, high-efficiency organic waste gas burner disclosed in this application optimizes the combustion environment from the source through multi-media layered supply and spiral mixing design, reduces local high-temperature and low-temperature areas, and lowers the risk of nitrogen oxide generation and pollutant residue. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the overall structure of this application; Figure 2 for Figure 1 Enlarged view of a portion of the middle air intake side (left end); Figure 3 for Figure 1 Enlarged view of the middle section; Figure 4 for Figure 1 Enlarged view of a portion of the center air outlet side (right end); Figure 5 This is a schematic diagram of the exhaust side end face in this application; Figure 6 This is a schematic diagram of the intake side end face in this application.

[0014] In the picture: 1. Waste liquid inlet pipe; 2. Waste liquid chamber; 3. Blind flange; 4. Natural gas inlet pipe; 5. Casing; 6. First air inlet pipe; 7. First air chamber; 8. Exhaust gas inlet pipe; 9. Exhaust gas chamber; 10. Second air inlet pipe; 11. Second air chamber; 12. Exhaust gas pipe; 13. First exhaust gas nozzle; 14. Second exhaust gas nozzle; 15. Second air spiral outlet; 16. Exhaust gas outlet; 17. First air spiral outlet; 18. Waste liquid nozzle; 19. Natural gas igniter; 20. Air outlet. Detailed Implementation

[0015] The present application will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present application, and therefore only show the components relevant to the present application.

[0016] like Figure 1-6 As shown, a novel low-NOx, high-efficiency organic waste gas burner includes: a waste gas chamber 9, on the outlet side of which a first waste gas nozzle 13, a second waste gas nozzle 14, and a waste gas outlet hole 16 are arranged sequentially from the outside to the inside; an air chamber, on the outlet side of which an air spiral outlet is provided; a waste liquid chamber 2, which is disposed through the interior of the waste gas chamber 9, and a waste liquid nozzle 18 is provided on the outlet side of the waste liquid chamber 2; and a natural gas inlet pipe 4, which is disposed through the interior of the waste gas chamber 9, and a natural gas igniter 19 is provided on the outlet side of the natural gas inlet pipe 4.

[0017] The air chamber features a spiral air outlet on its outlet side. This spiral airflow enhances the mixing of air with exhaust gas and natural gas, solving the problem of uneven mixing in traditional direct-flow air. The waste liquid chamber 2 runs through the exhaust gas chamber 9, and its outlet-side waste liquid nozzle 18 precisely directs industrial waste liquid into the combustion zone, achieving synergistic combustion of waste liquid and exhaust gas. The natural gas inlet pipe 4 also runs through the exhaust gas chamber 9, and its outlet-side natural gas igniter 19 ignites the mixed media. Due to its proximity to the core combustion area, its ignition efficiency is higher. This structure optimizes the combustion environment from the source through multi-media layered supply and spiral mixing design, reducing local high and low temperature areas and lowering the risk of nitrogen oxide generation and pollutant residue.

[0018] The first exhaust gas nozzle 13 discharges from the exhaust gas chamber 9 through the exhaust gas pipe 12.

[0019] In some further embodiments, the air chamber includes a first air chamber 7 and a second air chamber 11; the first air chamber 7 covers the outside of the waste liquid chamber 2, and the outlet side of the first air chamber 7 is provided with a first air spiral outlet 17 and an air outlet hole 20, the first air spiral outlet 17 being located in the annular region between the waste gas outlet hole 16 and the waste liquid nozzle 18; the second air chamber 11 covers the outside of the waste gas chamber 9, and the outlet side of the second air chamber 11 is provided with a second air spiral outlet 15, the second air spiral outlet 15 being located in the annular region where the second waste gas nozzle 14 is located.

[0020] The air chamber is specifically divided into a first air chamber 7 and a second air chamber 11. The first air chamber 7 covers the outside of the waste liquid chamber 2. Its first air spiral outlet 17 on the outlet side is located in the annular area between the waste gas outlet 16 and the waste liquid nozzle 18. It can provide the air required for combustion of the atomized waste liquid droplets in a targeted manner, and avoid incomplete combustion of waste liquid due to lack of oxygen. The second air chamber 11 covers the outside of the waste gas chamber 9. Its second air spiral outlet 15 on the outlet side is located in the annular area where the second waste gas nozzle 14 is located. It can provide short-range air supply for the waste gas discharged from the second waste gas nozzle 14, and form a gradient air supply with the outer layer of waste gas of the first waste gas nozzle 13.

[0021] The independent encapsulation and targeted air supply design of the dual air chambers further refines the air distribution accuracy, enabling precise matching of the air volume required for combustion of different media and alleviating the problem of local oxygen content imbalance caused by a single air supply.

[0022] In some other embodiments, a blind plate 3 is provided on the air inlet side of the first air cavity 7, and the blind plate 3 is located outside the waste liquid cavity 2.

[0023] In some other embodiments, the natural gas inlet pipe 4 is specifically disposed in the sleeve 5 inside the exhaust gas chamber 9.

[0024] In some further embodiments, the exhaust gas chamber 9 is provided with an exhaust gas inlet pipe 8 on the air inlet side; the first air chamber 7 is provided with a first air inlet pipe 6 on the air inlet side; the second air chamber 11 is provided with a second air inlet pipe 10 on the air inlet side; and the waste liquid chamber 2 is provided with a waste liquid inlet pipe 1 on the air inlet side.

[0025] The exhaust gas chamber 9 is connected to the exhaust gas inlet pipe 8 on its inlet side to introduce the organic waste gas to be treated; the first air chamber 7 is connected to the first air inlet pipe 6 on its inlet side, and the second air chamber 11 is connected to the second air inlet pipe 10 on its inlet side. The two independent air inlet pipes can adjust the air intake of the first air chamber 7 and the second air chamber 11 respectively through valves to adapt to the combustion requirements of different concentrations of waste gas and different amounts of waste liquid; the waste liquid chamber 2 is connected to the waste liquid inlet pipe 1 on its inlet side to facilitate the stable delivery of organic waste liquid generated in industrial production to the waste liquid chamber 2. The independent liquid / gas inlet pipes enable precise control of the supply of each medium, avoiding the fluctuations in combustion conditions caused by mutual interference of medium supply in traditional equipment, and improving the stability of equipment operation.

[0026] In some further embodiments, a first layer, a second layer, a third layer, a fourth layer, and a fifth layer are sequentially provided from the outside to the inside along the gas outlet side of the burner; The first exhaust gas nozzle 13 is located in the first layer; the second air spiral outlet 15, the air outlet 20, the second exhaust gas nozzle 14, and the natural gas igniter 19 are located in the second layer; the exhaust gas outlet 16 is located in the third layer; the first air spiral outlet 17 is located in the fourth layer; and the waste liquid nozzle 18 is located in the fifth layer. The first layer protrudes towards the air outlet side more than the second layer, the second layer protrudes towards the air outlet side more than the third layer, the third layer is flush with the fourth layer, and the fifth layer protrudes towards the air outlet side more than the fourth layer.

[0027] The first to fifth layers are arranged sequentially from the outside to the inside along the gas outlet side of the burner.

[0028] The first exhaust gas nozzle 13 is located on the first layer, the second air spiral outlet 15, the air outlet 20, the second exhaust gas nozzle 14, and the natural gas igniter 19 are located on the second layer, the exhaust gas outlet 16 is located on the third layer, the first air spiral outlet 17 is located on the fourth layer, and the waste liquid nozzle 18 is located on the fifth layer; and the first layer protrudes towards the exhaust side compared to the second layer, the second layer protrudes compared to the third layer, the third layer is flush with the fourth layer, and the fifth layer protrudes compared to the fourth layer.

[0029] The stepped and staggered layered design guides the various media to form a progressive mixing path after flowing out of the burner, avoiding airflow turbulence caused by direct collision of different media and reducing pressure fluctuations inside the furnace. At the same time, the protruding fifth layer allows the atomized waste liquid droplets to mix with the air in the first air spiral outlet 17 first, and the protruding first and second layers allow the waste gas to form an outer mixing zone with the air in the second air spiral outlet 15 first. Multi-level mixing prolongs the contact time of the media, further optimizes the temperature and pressure distribution, and reduces the risk of backfire.

[0030] In some further embodiments, the ends of the first air spiral outlet 17 and the second air spiral outlet 15 are provided with inclined baffles.

[0031] Both the first air spiral outlet 17 and the second air spiral outlet 15 are provided with inclined baffles at their ends. The inclined baffles are at an angle of 15-30° to the airflow direction of the spiral outlet, so that the airflow is blown out at an angle, thereby forming a spiral airflow.

[0032] In some further embodiments, the first exhaust nozzle 13 and the second exhaust nozzle 14 are multi-hole exhaust nozzles.

[0033] The first exhaust gas nozzle 13 and the second exhaust gas nozzle 14 can be multi-hole exhaust gas nozzles. The multi-hole design can disperse organic waste gas into a large number of fine airflows, which greatly increases the contact area between the waste gas and the air, and avoids the pyrolysis phenomenon caused by insufficient contact between the columnar waste gas ejected from a single-hole nozzle and the air. At the same time, the fine airflow can quickly merge with the spiral air, making the combustion reaction more complete and reducing the concentration of pollutants in the exhaust.

[0034] In some further embodiments, the waste liquid nozzle 18 is a fine atomizing nozzle.

[0035] The waste liquid nozzle 18 adopts a fine atomizing nozzle. The finely atomized waste liquid droplets have a larger specific surface area, which can quickly mix with air and natural gas and undergo a combustion reaction, avoiding the problems of incomplete combustion or dripping and accumulation caused by excessively large waste liquid droplets; in addition, the atomized droplets evaporate and absorb heat during combustion, which can moderately regulate the high temperature in the core area of ​​the flame, preventing the local temperature from exceeding 1300℃ and causing nitrogen and oxygen to react to form nitrogen oxides, thus achieving a low-NOx combustion effect.

[0036] In some further embodiments, the exhaust gas inlet pipe 8 is provided with a natural gas interface for auxiliary combustion.

[0037] The exhaust gas inlet pipe 8 is equipped with a natural gas interface for auxiliary combustion. This interface is connected to the exhaust gas inlet pipe 8 via a branch pipe, which is equipped with a flow control valve. When the calorific value of the exhaust gas cannot meet the combustion requirements, an appropriate amount of auxiliary natural gas can be introduced through this interface to assist combustion and ensure complete combustion of the organic waste gas. At the same time, the supplementation of auxiliary natural gas can avoid pressure fluctuations in the furnace caused by incomplete combustion of the exhaust gas, further reducing the risk of backfire and explosion.

[0038] In other embodiments, if the calorific value of the waste liquid does not meet the requirements, the waste liquid will no longer be supplied and the waste liquid inlet pipe 1 will be shut off; the calorific value of the waste liquid is determined based on the test results.

[0039] By staggering the exhaust gas, waste liquid, and air outlets on the exhaust side, and by arranging the exhaust gas outlet and air outlet in multiple layers and at multiple points, exhaust gas and air are evenly sprayed out from the entire exhaust side. In addition, the first air spiral outlet 17 and the second air spiral outlet 15 form a spiral air vortex, which greatly improves the mixing effect of air with organic waste gas, waste liquid, and auxiliary fuel, significantly improves the combustion efficiency of organic waste gas, and also achieves uniform temperature distribution, avoiding uneven pressure distribution caused by uneven temperature distribution, reducing the possibility of backfire, and ensuring the safety of equipment operation.

[0040] In addition, by staggering the exhaust gas outlet and air outlet on the exhaust side, the exhaust gas and air are evenly sprayed out from the entire exhaust side, preventing the formation of large airflows, thus avoiding the generation of large flames and avoiding localized excessively high temperatures. The formation of thermal nitrogen oxides is greatly suppressed, thereby significantly reducing the concentration of nitrogen oxides in the exhaust.

[0041] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. A novel low-nitrogen, high-efficiency organic waste gas burner, characterized in that, include: The exhaust gas chamber (9) is provided with a first exhaust gas nozzle (13), a second exhaust gas nozzle (14), and an exhaust gas outlet (16) in sequence from the outside to the inside on the exhaust gas outlet side. An air cavity, wherein the air outlet side of the air cavity is provided with an air spiral outlet; Waste liquid chamber (2) is provided through the interior of the waste gas chamber (9), and waste liquid nozzle (18) is provided on the gas outlet side of the waste liquid chamber (2). A natural gas inlet pipe (4) is installed inside the exhaust gas chamber (9), and a natural gas igniter (19) is provided on the outlet side of the natural gas inlet pipe (4).

2. The novel low-nitrogen, high-efficiency organic waste gas burner according to claim 1, characterized in that, The air cavity includes a first air cavity (7) and a second air cavity (11); The first air chamber (7) covers the outside of the waste liquid chamber (2). The first air chamber (7) has a first air spiral outlet (17) on the air outlet side. The first air spiral outlet (17) is located in the annular area between the waste gas outlet (16) and the waste liquid nozzle (18). The second air chamber (11) covers the outside of the exhaust gas chamber (9). The second air chamber (11) has a second air spiral outlet (15) and an air outlet hole (20) on the outlet side. The second air spiral outlet (15) is located in the annular area where the second exhaust gas nozzle (14) is located.

3. The novel low-nitrogen, high-efficiency organic waste gas burner according to claim 2, characterized in that, The exhaust gas chamber (9) is provided with an exhaust gas inlet pipe (8) on the air inlet side; the first air chamber (7) is provided with a first air inlet pipe (6) on the air inlet side; the second air chamber (11) is provided with a second air inlet pipe (10) on the air inlet side; and the waste liquid chamber (2) is provided with a waste liquid inlet pipe (1) on the air inlet side.

4. The novel low-nitrogen, high-efficiency organic waste gas burner according to claim 2, characterized in that, The burner is provided with a first layer, a second layer, a third layer, a fourth layer and a fifth layer from the outside to the inside along the gas outlet side; The first exhaust gas nozzle (13) is disposed in the first layer; the second air spiral outlet (15), the air outlet (20), the second exhaust gas nozzle (14), and the natural gas igniter (19) are disposed in the second layer; the exhaust gas outlet (16) is disposed in the third layer; the first air spiral outlet (17) is disposed in the fourth layer; and the waste liquid nozzle (18) is disposed in the fifth layer. The first layer protrudes towards the air outlet side more than the second layer, the second layer protrudes towards the air outlet side more than the third layer, the third layer is flush with the fourth layer, and the fifth layer protrudes towards the air outlet side more than the fourth layer.

5. The novel low-nitrogen, high-efficiency organic waste gas burner according to claim 2, characterized in that, Inclined baffles are provided at the ends of the first air spiral outlet (17) and the second air spiral outlet (15).

6. The novel low-nitrogen, high-efficiency organic waste gas burner according to claim 1, characterized in that, The first exhaust gas nozzle (13) and the second exhaust gas nozzle (14) are multi-hole exhaust gas nozzles.

7. The novel low-nitrogen, high-efficiency organic waste gas burner according to claim 1, characterized in that, The waste liquid nozzle (18) is a fine atomizing nozzle.

8. The novel low-nitrogen, high-efficiency organic waste gas burner according to claim 3, characterized in that, The exhaust gas inlet pipe (8) is equipped with a natural gas interface for auxiliary combustion.

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