Windproof efficient steam injection premixing smoke abatement burner

Abstract

The utility model provides a windproof efficient steam injection premixing smoke abatement burner, which relates to the technical field of tail gas treatment in the petrochemical industry and comprises an emptying gas pipe, a gas mixing chamber, a steam smoke abatement ring pipe and a flow guide pipe. According to the windproof efficient steam injection premixing smoke abatement burner, vent air enters the gas mixing chamber through the vent air pipe, meanwhile, steam enters the steam smoke abatement ring pipe, and the multiple steam injection pipes inject the air into the gas mixing chamber from multiple directions through high-speed steam to be premixed with the vent air. Due to the fact that the flow guide pipe is obliquely arranged and the opening of the bent pipe head inclines upwards in the circumferential tangential direction, air can rotate and flow when entering the gas mixing chamber, a rotational flow effect is formed, the rotational flow movement can enable the air, steam and exhausted gas to be fully mixed, the mixing uniformity is improved, the steam has high temperature and humidity, and therefore the steam can be fully mixed. The catalyst can react with carbon particles generated in the combustion process to oxidize or crack the carbon particles, so that precipitation of the carbon particles is reduced, and the purpose of smoke abatement is achieved.

Description

Technical Field

[0001] This utility model relates to the field of tail gas treatment technology in the petrochemical industry, and in particular to a windproof high-efficiency steam ejector premixed smoke-eliminating burner. Background Technology

[0002] In the petrochemical industry, some plants generate large amounts of hydrocarbons, including alkanes with 5 or more carbon atoms, alkenes with 30 carbon atoms, and alkynes with 30 carbon atoms, under abnormal conditions such as start-up, shutdown, water or power outages, and accidents. These complex hydrocarbons have a high carbon-to-hydrogen ratio and are prone to incomplete combustion under traditional combustion methods. Currently, the industry mostly uses conventional burners to treat these waste gases. However, conventional burners are limited by technical bottlenecks such as low mixing efficiency, uneven air supply, and poor combustion stability, making it difficult to achieve sufficient premixing of complex hydrocarbons with combustion air. This results in a large amount of carbon particles being released during combustion, forming thick black smoke.

[0003] The emission of black smoke not only causes severe visual pollution but also poses a great threat to the atmospheric environment. Unburned hydrocarbon compounds and carbon particles are important sources of pollutants such as PM2.5 and volatile organic compounds (VOCs). These pollutants exacerbate smog formation, harm the human respiratory system, and the large-scale emission of carbon particles also reduces energy efficiency and wastes resources. Utility Model Content

[0004] This invention provides a windproof, high-efficiency steam ejector premixed smoke-eliminating burner, which solves the problem mentioned in the background art of difficulty in achieving sufficient premixing of complex hydrocarbons and combustion air, resulting in the precipitation of a large number of carbon particles and the formation of dense black smoke during combustion.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a windproof high-efficiency steam ejector premixed smoke-extinguishing burner, comprising an air venting pipe, a gas mixing chamber, a steam smoke-extinguishing ring pipe, and a guide pipe. The gas mixing chamber is fixed to the upper end of the air venting pipe, and the steam smoke-extinguishing ring pipe is fixed to the outer circumferential side of the air venting pipe. Multiple steam ejector pipes are evenly distributed and fixed to the upper circumference of the steam smoke-extinguishing ring pipe. Multiple guide pipes are evenly distributed and fixed to the circumference of the gas mixing chamber. One end of each guide pipe extends into the interior of the gas mixing chamber. The steam ejector pipe is located inside the guide pipe. A bend is fixedly connected to the end of the guide pipe located inside the gas mixing chamber. Multiple bends are evenly distributed circumferentially, and the openings of the bends face the same direction. The openings of the bends face the tangential direction along the circumference.

[0006] Preferably, the bend head is tilted upwards.

[0007] Preferably, the guide tube is inclined, with one end extending outside the gas mixing chamber, and the end of the guide tube extending outside the gas mixing chamber is away from the gas mixing chamber.

[0008] Preferably, a tube sheet is fixedly connected to the upper end of the steam ejector tube, the tube sheet is in communication with the steam ejector tube, and a plurality of air holes are opened through the upper surface of the tube sheet. The diameter of the tube sheet is the same as the inner diameter of the guide tube.

[0009] Preferably, a steam inlet pipe is fixedly connected to the lower end of the steam smoke elimination ring pipe, a side rod is provided on one side of the steam inlet pipe, the side rod is fixed to the vent pipe, a clip is inserted into the side of the side rod, and the vent pipe is fixed to the side rod by the clip.

[0010] Preferably, the lower end of the steam inlet pipe is fixedly connected to a connecting pipe port, and the size of the connecting pipe port and the connection end of the steam inlet pipe is smaller than the size of the free end of the connecting pipe port.

[0011] Preferably, a windproof cover is fixedly connected to the outer peripheral side of the upper opening of the gas mixing chamber, the windproof cover has multiple holes, and the upper surface of the windproof cover is higher than the upper surface of the gas mixing chamber.

[0012] Preferably, a fixing plate is fixedly connected to the inner side of the windproof cover, and the windproof cover is fixed to the gas mixing chamber by the fixing plate.

[0013] Preferably, a fluid seal is fixedly connected to the lower end of the vent pipe, and the fluid seal is located inside the vent pipe.

[0014] Preferably, multiple flame stabilizing blocks are evenly distributed and fixed on the inner circumference of the upper opening of the gas mixing chamber.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] Vented air enters the gas mixing chamber through the vent pipe. Simultaneously, steam enters the steam inlet pipe through the connecting pipe and then flows into the steam smoke-eliminating ring pipe. Multiple steam ejectors use high-speed steam from multiple directions to inject air from the lower part of the guide pipe into the gas mixing chamber for premixing with the vented air. Due to the inclined design of the guide pipe and the upward inclination of the bend head opening along the circumferential tangent, the air entering the gas mixing chamber will generate a swirling flow, creating a vortex effect. This swirling motion ensures thorough mixing of air, steam, and vented air, improving mixing uniformity. The steam, with its high temperature and humidity, can react with the carbon particles produced during combustion, oxidizing or decomposing them, thereby reducing carbon particle precipitation and achieving the purpose of smoke elimination. At the upper opening of the gas mixing chamber, a flame stabilizer block plays a role in stabilizing the combustion flame, allowing the mixed gas to burn stably and completely. The wind shield blocks strong external winds from interfering with the flame, ensuring that the combustion process is not affected by external environmental factors and continues stably. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the windproof high-efficiency steam ejector premixed smoke-eliminating burner of this utility model;

[0018] Figure 2 This is a cross-sectional view of the windproof high-efficiency steam ejector premixed smoke-extinguishing burner of this utility model;

[0019] Figure 3 This is a top view of the windproof high-efficiency steam ejector premixed smoke-extinguishing burner of this utility model;

[0020] Figure 4 This is a schematic diagram showing the orientation of the bend head opening of this utility model;

[0021] Figure 5 This is a structural schematic diagram of the installation position of the flame stabilizer block of this utility model;

[0022] Figure 6 for Figure 5 Enlarged view of point A.

[0023] The following are the labels in the diagram: 1. Air vent pipe; 11. Side rod; 12. Clamp; 2. Gas mixing chamber; 3. Windproof cover; 31. Fixing plate; 4. Flame stabilizer block; 5. Steam smoke elimination ring pipe; 51. Steam ejector pipe; 52. Tube sheet; 521. Vent; 6. Steam inlet pipe; 61. Connecting pipe port; 7. Guide pipe; 8. Elbow; 9. Fluid seal. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] This utility model provides a windproof, high-efficiency steam ejector premixed smoke-eliminating burner, such as... Figure 1 As shown, the burner includes an air vent pipe 1, a gas mixing chamber 2, a steam smoke elimination ring pipe 5, and a guide pipe 7. The gas mixing chamber 2 is fixed to the upper end of the air vent pipe 1. The air vent pipe 1 serves as the basic support structure for the entire burner, providing a mounting base for other components and a channel for fuel to enter the gas mixing chamber 2. Figure 2 As shown, the transition section connecting the gas mixing chamber 2 and the vent pipe 1 adopts an expanded diameter design, with the diameter of the gas mixing chamber 2 being larger than that of the vent pipe 1. This reduces the flow rate of the vented air, increases the mixing time, and ensures more thorough gas mixing, thereby improving combustion efficiency. The steam smoke elimination ring pipe 5 is fixed to the outer circumference of the vent pipe 1. Multiple steam ejector pipes 51 are evenly distributed around the upper circumference of the steam smoke elimination ring pipe 5. The steam smoke elimination ring pipe 5 is used to distribute steam; its annular structure design ensures uniform distribution of steam to each steam ejector pipe 51, guaranteeing the uniformity of steam-gas mixing. Multiple guide pipes 7 are evenly distributed around the circumference of the gas mixing chamber 2. One end of each guide pipe 7 extends into the interior of the gas mixing chamber 2, with the steam ejector pipes 51 located inside. The guide pipes 7 are inclined, and the other end extends out of the gas mixing chamber 2, with the end of the guide pipe 7 extending away from the gas mixing chamber 2. Figure 5 and Figure 6 As shown, a tube sheet 52 is fixedly connected to the upper end of the steam ejector tube 51. The tube sheet 52 communicates with the steam ejector tube 51, and multiple air holes 521 are formed through the upper surface of the tube sheet 52. The diameter of the tube sheet 52 is the same as the inner diameter of the guide tube 7. The steam ejector tube 51 is a thin tube with a small diameter. When steam is ejected at high speed from the steam ejector tube 51 into the interior of the guide tube 7, an ejection effect is generated. Multiple steam ejector tubes 51 use high-speed steam from multiple directions to eject the air at the bottom of the guide tube 7 into the gas mixing chamber 2 for premixing with the vented air.

[0026] like Figure 3 and Figure 4As shown, a bent pipe head 8 is fixedly connected to the end of the guide pipe 7 located inside the gas mixing chamber 2. Multiple bent pipe heads 8 are evenly distributed circumferentially, with their openings facing the same direction, tangentially along the circumference. The mixture of steam and air is ejected from the bent pipe heads 8, which create a strong swirling flow when the mixture enters the gas mixing chamber 2. This significantly improves the uniformity of the air-air mixture, providing excellent conditions for complete combustion and smoke elimination.

[0027] When the mixed gas is ejected from the bend head 8 in multiple directions, it forms a ring-shaped swirling flow. The swirling motion increases the flow velocity and turbulence of the gas, enabling the gas to be fully mixed in a shorter time. This promotes the complete combustion of hydrocarbon venting, reduces the probability of black smoke generation, and lowers steam consumption. At the same time, it minimizes the polymerization of hydrocarbon compounds during combustion and causes them to burn at a low rate to form oxides. The temperature generated by combustion does not cause hydrocarbon gas molecules to crack or polymerize.

[0028] In a flare system, vented air refers to gases generated during industrial production processes for various reasons that need to be burned through a flare before being released into the atmosphere.

[0029] Preferably, the bends 8 are inclined upwards. Multiple bends 8 arranged circumferentially with openings tangentially to the circumference ensure that the gas entering the gas mixing chamber 2 not only has an upward velocity but also a tangential velocity along the circumference due to the tangential openings. The upward inclination further enhances this effect, making the upward movement of the gas and its circumferential movement even more pronounced. The gas experiences centrifugal force during its circular motion, and the upward inclination causes this centrifugal force to have an upward component, thus promoting a spiral upward flow pattern, i.e., upward swirling flow. This upward swirling flow significantly increases the opportunities for collisions, friction, and mixing between gases. This strong disturbance helps break down the stratification and inhomogeneity between gases, allowing fuel, air, and steam to contact and mix more fully, creating favorable conditions for subsequent stable combustion and efficient smoke elimination.

[0030] like Figure 1 and Figure 5As shown, a steam inlet pipe 6 is fixedly connected to the lower end of the steam smoke elimination ring pipe 5. A side rod 11 is provided on one side of the steam inlet pipe 6, and the side rod 11 is fixed to the air vent pipe 1. A clip 12 is inserted into the side of the side rod 11, and the air vent pipe 1 is fixed to the side rod 11 by the clip 12. A connecting port 61 is fixedly connected to the lower end of the steam inlet pipe 6. A steam supply pipe is connected to the lower end of the connecting port 61 for supplying steam to the steam inlet pipe 6. The size of the connection end of the connecting port 61 to the steam inlet pipe 6 is smaller than the size of the free end of the connecting port 61. This tapered structure design can effectively accelerate the flow rate of steam when it enters the steam inlet pipe 6, allowing the steam to enter the steam smoke elimination ring pipe 5 more quickly.

[0031] like Figure 2 and Figure 4 As shown, a windproof cover 3 is fixedly connected to the outer peripheral side of the upper opening of the gas mixing chamber 2. The windproof cover 3 has multiple holes, and its upper surface is higher than the upper surface of the gas mixing chamber 2. A fixing plate 31 is fixedly connected to the inner surface of the windproof cover 3, thus securing the windproof cover 3 to the gas mixing chamber 2. The windproof cover 3 can block strong external winds from interfering with the combustion flame, ensuring smooth airflow. The holes both ensure airflow and effectively prevent wind damage.

[0032] like Figure 2 As shown, a fluid seal 9 is fixedly connected to the lower end of the vent pipe 1, and the fluid seal 9 is located inside the vent pipe 1. The outlet diameter of the fluid seal 9 is small, which can play a certain role in throttling the gas passing through, making the gas flow faster and the pressure higher, which helps to control the flow rate and volume of the gas discharge, and makes the gas discharge more orderly.

[0033] like Figure 1 and Figure 2 As shown, multiple flame stabilizing blocks 4 are evenly distributed and fixed on the inner circumference of the upper opening of the gas mixing chamber 2. The cross-section of the flame stabilizing block 4 is "S" shaped. The shape design of the "S" shaped flame stabilizing block 4 causes the airflow to generate a complex flow pattern when it passes through, increasing the turbulence of the airflow. This turbulence can make the combustible gas mix better with the air and promote the combustion reaction.

[0034] Using this utility model, such as Figure 1 and Figure 2As shown, vented air enters the gas mixing chamber 2 through vented air pipe 1. Simultaneously, steam enters the steam inlet pipe 6 through connecting pipe port 61, and then flows into the steam smoke elimination ring pipe 5. Multiple steam ejector pipes 51 use high-speed steam to inject air from the lower part of the guide pipe 7 into the gas mixing chamber 2 for premixing with the vented air. Because the guide pipe 7 is inclined and the opening of the bend head 8 is inclined upward along the circumferential tangent, the air will generate a swirling flow when entering the gas mixing chamber 2, forming a swirling effect. This swirling motion can fully mix the air, steam, and vented air, improving the mixing uniformity. The steam has a high temperature and humidity, which can react with the carbon particles generated during combustion, oxidizing or cracking them, thereby reducing the precipitation of carbon particles and achieving the purpose of smoke elimination. At the upper opening of the gas mixing chamber 2, the flame stabilizer block plays a role in stabilizing the combustion flame, so that the mixed gas can burn stably and completely. The wind shield 3 blocks the interference of strong external wind on the flame, ensuring that the combustion process is not affected by external environmental factors and continues to proceed stably.

[0035] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A windproof, high-efficiency steam ejector premixed smoke-eliminating burner, characterized in that, The system includes an air vent pipe (1), a gas mixing chamber (2), a steam smoke elimination ring pipe (5), and a guide pipe (7). The gas mixing chamber (2) is fixed at the upper end of the air vent pipe (1). The steam smoke elimination ring pipe (5) is fixed on the outer circumferential side of the air vent pipe (1). Multiple steam ejector pipes (51) are evenly distributed and fixed at the upper circumference of the steam smoke elimination ring pipe (5). Multiple guide pipes (7) are evenly distributed and fixed at the circumference of the gas mixing chamber (2). One end of the guide pipe (7) extends into the interior of the gas mixing chamber (2). The steam ejector pipe (51) is located inside the guide pipe (7). A bend head (8) is fixedly connected at the end of the guide pipe (7) inside the gas mixing chamber (2). Multiple bend heads (8) are evenly distributed around the circumference and the openings of the bend heads (8) are arranged in the same direction. The openings of the bend heads (8) are tangential to the circumference.

2. The windproof high-efficiency steam ejector premixed smoke-eliminating burner according to claim 1, characterized in that, The bend head (8) is set at an upward angle.

3. The windproof high-efficiency steam ejector premixed smoke-eliminating burner according to claim 1, characterized in that, The guide tube (7) is inclined, and the other end of the guide tube (7) extends outside the gas mixing chamber (2). The end of the guide tube (7) extending outside the gas mixing chamber (2) is far away from the gas mixing chamber (2).

4. The windproof high-efficiency steam ejector premixed smoke-eliminating burner according to claim 1, characterized in that, The upper end of the steam ejector tube (51) is fixedly connected to a tube sheet (52), which is connected to the steam ejector tube (51). The upper surface of the tube sheet (52) is provided with multiple air holes (521), and the diameter of the tube sheet (52) is the same as the inner diameter of the guide tube (7).

5. The windproof high-efficiency steam ejector premixed smoke-eliminating burner according to claim 1, characterized in that, The lower end of the steam smoke elimination ring pipe (5) is fixedly connected to a steam inlet pipe (6). A side rod (11) is provided on one side of the steam inlet pipe (6). The side rod (11) is fixed on the air vent pipe (1). A clip (12) is inserted into the side of the side rod (11). The air vent pipe (1) is fixed on the side rod (11) by the clip (12).

6. The windproof high-efficiency steam ejector premixed smoke-eliminating burner according to claim 5, characterized in that, The lower end of the steam inlet pipe (6) is fixedly connected to a connecting port (61), and the size of the connecting port (61) and the connecting end of the steam inlet pipe (6) is smaller than the size of the free end of the connecting port (61).

7. The windproof high-efficiency steam ejector premixed smoke-eliminating burner according to claim 1, characterized in that, A windproof cover (3) is fixedly connected to the outer peripheral side of the upper opening of the gas mixing chamber (2). The windproof cover (3) has multiple holes, and the upper surface of the windproof cover (3) is higher than the upper surface of the gas mixing chamber (2).

8. The windproof high-efficiency steam ejector premixed smoke-eliminating burner according to claim 7, characterized in that, A fixing plate (31) is fixedly connected to the inner side of the windproof cover (3), and the windproof cover (3) is fixed to the gas mixing chamber (2) by the fixing plate (31).

9. The windproof high-efficiency steam ejector premixed smoke-eliminating burner according to claim 1, characterized in that, A fluid seal (9) is fixedly connected to the lower end of the vent pipe (1), and the fluid seal (9) is located inside the vent pipe (1).

10. The windproof high-efficiency steam ejector premixed smoke-eliminating burner according to claim 1, characterized in that, Multiple flame stabilizing blocks (4) are evenly distributed and fixed on the inner circumference of the upper opening of the gas mixing chamber (2).

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