A dual-swirl burner and flare system

Abstract

The application discloses a double-cyclone-type combustor and a torch system, which comprises a first gas conveying assembly, a second gas conveying assembly and a flow guide assembly. The first gas conveying assembly comprises a first cylinder and a plurality of groups of combustion heads arranged on the outer wall of the first cylinder. The second gas conveying assembly comprises a second cylinder which is coaxially arranged outside the first cylinder. The flow guide assembly is arranged between adjacent flow guide assemblies and has a flow guide channel. The flow guide channel changes the outflow direction of auxiliary gas so that the auxiliary gas is mixed with torch gas. The torch gas jet is wrapped by the auxiliary gas jet which is emitted at a certain angle, and the two gas flows rotate together to form a rotating jet, thereby achieving a circumferential mixing effect. The high entrainment capacity of the backflow area formed by the rotating jet further improves the oxygen content of the mixed gas, so that the combustion is more sufficient, and the effect of smokeless combustion of the torch gas is achieved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of torch burners, and particularly relates to a double-cyclone-type burner and a torch system. BACKGROUND

[0002] A torch system is a safety device for processing flammable gas discharged under normal operation, start and stop of a device, and various accident conditions, and a burner, as a core device in the torch system, is a guarantee for ensuring that torch gas combustion meets requirements. The burner usually needs to add an auxiliary medium to achieve smokeless combustion, but the auxiliary medium is usually vertically discharged at the outlet of the burner, which leads to poor mixing effect of the auxiliary medium and the torch gas, and problems such as incomplete combustion, black smoke, and smoldering of the burner are prone to occur, which seriously affects the service life of the torch system. SUMMARY

[0003] The application provides a double-cyclone-type burner and a torch system, which aims to solve the problem of poor mixing effect of the auxiliary medium and the torch gas in the straight-flow-type torch system, leading to smoke during combustion, and to achieve smokeless combustion.

[0004] Technical scheme: The double-cyclone-type burner provided by the application comprises:

[0005] A first gas conveying assembly, which comprises a first cylinder and a plurality of combustion heads arranged on the outer wall of the first cylinder; the first gas conveying assembly has a first channel that penetrates the first cylinder and the combustion heads, and is used for conveying torch gas;

[0006] A second gas conveying assembly, which comprises a second cylinder, the second cylinder is arranged outside the first cylinder and coaxially arranged with the first cylinder, the second cylinder and the first cylinder have a second channel therebetween, the combustion heads are located in the second channel, and the second channel is used for conveying auxiliary gas;

[0007] A flow guide assembly, which is arranged in the second channel and connected with the combustion heads, adjacent flow guide assemblies have a flow guide channel, the outlet of the flow guide channel corresponds to the torch gas, and the flow guide channel changes the flow direction of the auxiliary gas to mix the auxiliary gas with the torch gas.

[0008] In some embodiments, the direction in which the auxiliary gas flows out of the flow guide channel is a first direction X, the direction in which the torch gas flows out of the combustion heads is a second direction Y, and the first direction X intersects the second direction Y; or,

[0009] The angle between the first direction X and the second direction Y is greater than 0° and less than 90°.

[0010] In some embodiments, the combustion head comprises a top surface and two side surfaces connected to the top surface; a plurality of groups of spaced-apart injection holes are provided on the top surface, the injection holes penetrating through the top surface and communicating with the first channel for the outflow of the flare gas.

[0011] In some embodiments, the outlet of the flow guide channel is in the same plane as the top surface; or, the outlet of the flow guide channel is tangent to the top surface.

[0012] In some embodiments, the flow guide assembly comprises a first vane, a second vane and a baffle plate;

[0013] The first vane and the second vane are respectively provided on the two sides of the combustion head; along the direction of the inner wall of the second cylinder body towards the outer wall of the first cylinder body, one side of the first vane is connected to the side surface, and the other side is connected to the inner wall of the second cylinder body; one side of the second vane is connected to the side surface, and the other side is connected to the inner wall of the second cylinder body;

[0014] The baffle plate is connected to the first vane, the second vane and the combustion head respectively, so that the side of the flow guide assembly away from the combustion head is sealed; the flow guide assembly has a cavity, and the first vane, the second vane, the baffle plate and the combustion head enclose the cavity, and the cavity is located on one side of the flow guide channel.

[0015] In some embodiments, the first vane comprises a first segment, a circular arc segment and a second segment connected in sequence;

[0016] Along the outflow direction of the auxiliary gas, one side of the first segment is connected to the top surface and forms an included angle with the side surface; the second segment is symmetrically arranged with the first segment along the circular arc segment, and one end of the second segment away from the first segment is connected to the baffle plate;

[0017] The second vane and the first segment in the adjacent flow guide assembly form the flow guide channel.

[0018] In some embodiments, the second vane is parallel to the first segment in the adjacent flow guide assembly; and / or

[0019] The distance between the second vane and the first segment in the adjacent flow guide assembly is 15-60 mm; and / or

[0020] The included angle is in the range of 30°-50°.

[0021] In some embodiments, the second cylinder body comprises a cylindrical portion, a conical portion and a bottom plate; the cylindrical portion is connected to the conical portion; the bottom plate is provided on the side of the conical portion away from the cylindrical portion and covers the second channel;

[0022] The distance between the one end of the cylindrical part away from the conical part and the top surface along the axial direction of the second cylinder is 50-100 mm.

[0023] In some embodiments, the second gas feeding assembly further comprises a third cylinder connected with the sidewall of the conical part for feeding auxiliary gas to the second cylinder.

[0024] In some embodiments, the combustion heads are uniformly arranged along the circumference of the outer wall of the first cylinder; and / or

[0025] The combustion heads are arranged in central symmetry along the axis of the first cylinder.

[0026] In some embodiments, the flow guiding channels are uniformly distributed along the circumference of the first cylinder; and / or

[0027] The flow guiding channels are arranged in central symmetry along the axis of the first cylinder.

[0028] In some embodiments, the present application further provides a flare system comprising the double-swirl-type burner.

[0029] Beneficial effects: Compared with the prior art, the double-swirl-type burner of the embodiments of the present application comprises: a first gas feeding assembly, the first gas feeding assembly comprising a first cylinder and a plurality of groups of combustion heads arranged on the outer wall of the first cylinder; the first gas feeding assembly has a first channel penetrating through the first cylinder and the combustion heads for transmitting flare gas; a second gas feeding assembly, the second gas feeding assembly comprising a second cylinder, the second cylinder being sleeved on the outer wall of the first cylinder and arranged coaxially with the first cylinder, the second cylinder having a second channel with the first cylinder, the combustion heads being located in the second channel, the second channel being used for transmitting auxiliary gas; a flow guiding assembly, the flow guiding assembly being arranged in the second channel and connected with the combustion heads, the adjacent flow guiding assemblies having a flow guiding channel, the outlet of the flow guiding channel corresponding to the flare gas, the flow guiding channel changing the flow direction of the auxiliary gas to mix the auxiliary gas with the flare gas. It can be understood that, by arranging the flow guiding assembly, the flare gas jet is wrapped by the auxiliary gas jet emitted at a certain angle, the two gas flows rotate together to form a rotating jet, which achieves the effect of sufficient circumferential mixing, and the high entrainment capacity of the backflow area formed by the rotating jet further improves the oxygen content of the mixed gas, so that the combustion is more sufficient, and the effect of flare gas smokeless combustion is achieved.

[0030] It should be noted that the flare system can have all the technical features and beneficial effects of the above-mentioned double-swirl-type burner, the rotating jet flows and mixes sufficiently in the circumferential direction, so that the flare gas and the auxiliary gas are mixed more sufficiently, and the combustion is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of the dual-swirl burner provided in the embodiments of this application;

[0033] Figure 2 This is a front cross-sectional schematic diagram of the dual-swirl burner provided in the embodiments of this application;

[0034] Figure 3 This is a schematic diagram of the flow guiding component assembly provided in the embodiments of this application;

[0035] Figure 4 This is a top view of the dual-swirl burner provided in the embodiments of this application;

[0036] Figure 5 This is a schematic diagram of the combustion head structure provided in an embodiment of this application;

[0037] Figure 6 This is a schematic diagram of the tangential entry of the third cylinder and the second cylinder provided in the embodiments of this application;

[0038] Figure 7 This is a schematic diagram of the flow guiding component structure provided in an embodiment of this application;

[0039] Figure 8 This is a schematic diagram of the mixing principle of auxiliary gas and flare gas provided in the embodiments of this application;

[0040] Reference numerals: 10-First gas delivery assembly, 20-Second gas delivery assembly, 30-Flow guide assembly, 40-Flow guide channel, 101-First cylinder, 102-Combustion head, 103-First channel, 201-Second cylinder, 202-Second channel, 203-Third cylinder, 301-First blade, 302-Second blade, 303-Baffle plate, 304-Cavity, 1021-Top surface, 1022-Side surface, 1023-Nozzle, 2011-Cylindrical part, 2012-Conical part, 2013-Bottom plate, 3011-First section, 3012-Arc section, 3013-Second section. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0042] In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified.

[0043] It should also be noted that, in the description of this application, "perpendicular" means completely perpendicular to 90° or almost completely perpendicular. For example, the range of included angles between 80° and 100° is considered perpendicular. Similarly, "parallel" means completely parallel or almost completely parallel. For example, the range of completely parallel angles between 10° and 10° is considered parallel.

[0044] The applicant notes that the flare system is a safety facility used to treat flammable gases emitted during normal operation, start-up, shutdown, and various accident conditions of the facility, serving as the last line of defense for the safe and stable operation of the facility. The burner is the core equipment in the flare system, ensuring that the flare gas meets environmental protection requirements after combustion treatment. Different burner structures are selected based on the physical properties and emission parameters of different flare gases to achieve smokeless combustion at specified pressures or flow rates. For a given burner structure, when the flare gas is not operating at its optimal pressure and flow rate, such as in low-flow emission conditions, the low emission pressure results in insufficient momentum of the flare gas at the burner outlet, weak mixing with the surrounding air, and incomplete combustion, black smoke, etc. When the burner is not operating at its optimal pressure and flow rate but still needs to achieve good combustion performance, auxiliary media are required to achieve smokeless combustion. The most common auxiliary smoke suppression media are steam and air. Steam is usually injected into the combustion zone through one or more sets of nozzles and is a widely used smoke suppression measure. Air smoke suppression currently mostly uses a sleeve structure, with flare gas flowing through the inner sleeve and air flowing through the outer sleeve. The two media are in a direct flow and mix at the burner outlet. Both methods have the following problems in actual operation: 1) No steam supply within the unit; 2) In cold weather, the steam quality is poor, becoming unsaturated after being ejected from the nozzle, worsening combustion, and even freezing and clogging the burner nozzles, affecting the safety of the flare system; 3) In the direct flow structure of the inner and outer sleeves of air smoke suppression, the flare gas has different structures and angles at the burner outlet, but the air flows out of the burner outlet basically vertically. Premixing relies on the injection angle of the flare gas and the vertically flowing air, but when the flare gas velocity is low, the momentum at the flare gas outlet is insufficient, resulting in poor premixing with the air; 4) Under certain operating conditions, an inappropriate air ratio can also cause the flare gas to burn near the burner, causing the burner to smolder and affecting its service life.

[0045] Therefore, there is a need to provide a dual-swirl burner and flare system to solve the problem of poor mixing effect and black smoke emission during combustion of direct-flow air extinguishing flares under certain operating conditions, and to achieve smokeless combustion.

[0046] See Figure 1 and Figure 2The illustrated dual-swirl burner includes: a first gas delivery assembly 10, a second gas delivery assembly 20, and a flow guiding assembly 30; the first gas delivery assembly 10 includes a first cylinder 101 and multiple sets of burner heads 102 disposed on the outer wall of the first cylinder 101; the first gas delivery assembly 10 has a first channel 103 that penetrates the first cylinder 101 and the burner heads 102 for transmitting flare gas; the second gas delivery assembly 20 includes a second cylinder 201 that is sleeved on the first cylinder 101. The second cylinder 201 is coaxially arranged with the first cylinder 101. A second channel 202 is provided between the second cylinder 201 and the first cylinder 101. The burner head 102 is located in the second channel 202, which is used to transport auxiliary gas. A flow guiding component 30 is provided in the second channel 202 and connected to the burner head 102. A flow guiding channel 40 is provided between adjacent flow guiding components 30. The outlet of the flow guiding channel 40 corresponds to the flare gas. The flow guiding channel 40 mixes the auxiliary gas with the flare gas by changing the outflow direction of the auxiliary gas. In this embodiment, by setting the flow guiding components 30, a flow guiding channel 40 is formed between the flow guiding components 30. The flow guiding channel 40 can change the flow direction of the auxiliary gas originally located in the second channel 202, so that the flare gas jet is entrained by the auxiliary gas jet ejected at a certain angle. The two airflows rotate together to form a rotating jet, achieving a thorough circumferential mixing effect. Moreover, the high entrainment capacity of the reflux zone formed by the rotating jet further increases the oxygen content of the mixed gas, making the combustion more complete and achieving the effect of smokeless combustion of the flare gas.

[0047] It is understandable that combustion involves complex physicochemical processes including flow, heat transfer, mass transfer, and chemical reactions. With a fixed excess air coefficient, poor mixing of the flare gas and auxiliary gas can lead to localized areas of fuel richness and oxygen deficiency, resulting in soot production. Due to uneven mixing in these areas, the oxygen content may be too low, preventing the soot from oxidizing and ultimately causing large amounts of soot to be released into the atmosphere, producing black smoke. In turbulent diffusion flames, high-intensity turbulence can rapidly mix the fuel and oxidizer and enhance the oxidation of soot particles. Therefore, to solve the black smoke problem, it is essential to ensure a sufficient air supply and good mixing of the flare gas and auxiliary gas. The angle of the airflow and the rotation intensity of the auxiliary gas are crucial for airflow mixing. The oxygen content of the auxiliary gas itself increases the oxygen content for flare gas combustion, while the rotating air jet accelerates the mixing of the flare gas and auxiliary gas and creates a recirculation zone, thereby enhancing the ignition and stable combustion of the flare gas.

[0048] In some embodiments, see further. Figure 2The direction in which the auxiliary gas flows out from the guide channel 40 is the first direction X, and the direction in which the flare gas flows out from the burner head 102 is the second direction Y. The first direction X and the second direction Y intersect; or, the angle between the first direction X and the second direction Y is greater than 0° and less than 90°.

[0049] It is understandable that the first direction X and the second direction Y are the directions shown by the arrows in the diagram. Figure 2 In the process, when the auxiliary gas enters the second channel 202, it first flows upward along the second channel 202. Since a guide channel 40 is formed between adjacent guide components 30, the guide component 30 can change the flow of the auxiliary gas along the first direction X and spray it toward the flare gas at a certain angle. The angle between the first direction X and the second direction Y can be determined according to the actual flow rate and flow rate of the auxiliary gas and the flare gas. When the angle between the two is within the above range, the gas rotation angle and swirling intensity at the outlet of the guide channel can be controlled so that the auxiliary gas intersects with the flare gas sprayed from the burner head at a certain angle, thereby achieving the purpose of enhancing the mixing effect.

[0050] In some embodiments, see further. Figure 4 and Figure 5 The burner head 102 includes a top surface 1021 and two side surfaces 1022 connected to the top surface 1021. The top surface 1021 has multiple sets of spaced-apart nozzles 1023, which penetrate the top surface 1021 and communicate with the first channel 103 for the outflow of flare gas. It is understood that since both the first cylinder 101 and the burner head 102 are hollow structures, the interconnected hollow structures form the first channel, allowing flare gas to flow within both the first cylinder 101 and the burner head 102. With the nozzles 1023 on the top surface 1021, the flare gas located within the first channel 103 can be ejected from the nozzles 1023. The staggered arrangement of the nozzles 1023 ensures a uniform outflow of flare gas. By setting the nozzles 1023, the recirculation zone of the combustion area is controlled above the flare head outlet, which not only stabilizes combustion but also prevents damage to the flare head from the high temperatures generated during combustion.

[0051] In some embodiments, see Figure 5 The nozzles 1023 are set at equal intervals and are located on the same straight line. This allows the flare gas to be evenly distributed, which helps to mix it evenly with the auxiliary gas and improves the mixing effect.

[0052] In some embodiments, in order to further improve the uniformity of flare gas ejection, the diameter of the nozzle 1023 gradually increases along the direction away from the first cylinder 101. This ensures that the nozzle 1023 near the first cylinder 101 has a small diameter, while the nozzle 1023 away from the first cylinder 101 has a large diameter. Since the flare gas will travel a certain distance in the burner head 102, when the diameter of the nozzle 1023 is set in the above manner, it can further ensure that the amount of flare gas ejected from each nozzle 1023 is approximately the same, so as to ensure uniform flare gas ejection and thus more uniform mixing with the auxiliary gas.

[0053] In some embodiments, see Figure 4 It is understood that the top surface 1021 can be either a plane or a curved surface. When the top surface 1021 is a plane, the outlet of the guide channel 40 is located on the same plane as the top surface 1021; or when the top surface 1021 is a curved surface, the outlet of the guide channel 40 is tangent to the top surface 1021. When the outlet of the guide channel 40 is on the same plane as the top surface 1021, the auxiliary gas can pass through the guide channel 40 more smoothly, reducing resistance and thus improving the guiding effect. When the outlet of the guide channel 40 is tangent to the top surface 1021, the auxiliary gas can be guided more accurately along the curvature direction of the top surface. This helps control the gas flow path and injection range, allowing the auxiliary gas to more precisely cover the target area.

[0054] In some embodiments, see further. Figure 3 and Figure 7 The flow guiding assembly 30 includes a first blade 301, a second blade 302, and a baffle plate 303. The first blade 301 and the second blade 302 are respectively disposed on both sides of the burner head 102. Along the direction from the inner wall of the second cylinder 201 toward the outer wall of the first cylinder 101, one side of the first blade 301 is connected to the side wall 1022, and the other side is connected to the inner wall of the second cylinder 201. One side of the second blade 302 is connected to the side wall 1022, and the other side is connected to the inner wall of the second cylinder 201. The baffle plate 303 is connected to the first blade 301, the second blade 302, and the burner head 102 respectively, so that the side of the flow guiding assembly 30 away from the burner head 102 is sealed. The flow guiding assembly 30 has a cavity 304, which is formed by the first blade 301, the second blade 302, the baffle plate 303, and the burner head 102. The cavity 304 is located on one side of the flow guiding channel 40.

[0055] Understandably, the first blade 301 is a curved blade with low resistance, while the second blade 302 is a straight blade. These two types of blades are arranged on both sides of a single burner head 102, converging at the central cross-section of the burner head 102. The baffle plate 303 is a straight blade and can be used to fill the area between the first blade 301, the second blade 302, and the burner head 102. Each type of blade has a thickness of 2-3 mm, and the roots of the blades or baffles are attached to the inner wall of the second cylinder 201 and the two sides 1022 of the burner head.

[0056] In some embodiments, see further. Figure 7 The first blade 301 includes a first segment 3011, an arc segment 3012, and a second segment 3013 connected in sequence. Along the outflow direction of the auxiliary gas, i.e., the first direction X, one side of the first segment 3011 is connected to the top surface 1021 and forms an angle with the side surface 1022. The second segment 3013 is symmetrically arranged with the first segment 3011 along the arc segment 3012, and the end of the second segment 3013 away from the first segment 3011 is connected to the baffle plate 303. The first blade 301 is U-shaped. The first segment 3011 is close to the side 1022 of the burner head 102 and tangent to the top surface 1021 of the burner head 102. The first segment 3011 has a certain tilt angle relative to the side 1022 of the burner head 102. This angle and the length of the first segment 3011 need to be selected by comprehensively considering the swirling intensity and airflow resistance. The second segment 3013 is symmetrically arranged with the first segment 3011, and the lower part of the second segment 3013 extends to the center section of the corresponding burner head 102, which can ensure the overall strength of the first blade 301. The arc segment 3012 can be determined according to the dimensions of the first segment 3011 and the second segment 3013. The arc segment 3012 provides a certain deformation capacity for the first blade 301, further improving the strength of the first blade. The baffle plate 303, together with the first blade 301, the second blade 302, and the burner head 102, forms a lowerly enclosed cavity 304. This cavity constitutes a blunt-body backflow structure to improve the performance of fluid or gas flow. In this structure, the blunt-body backflow structure, by forming a closed cavity 304, blocks the backflow of fluid or gas, which helps to improve gas convergence at the top, avoids the loss of auxiliary gas, and can also effectively control the flow of auxiliary gas, improving stability and efficiency. At the same time, the blunt-body backflow structure can also improve the mixing and combustion efficiency during the combustion process. By controlling the flow and distribution of flare gas, more complete combustion can be achieved. The cross-section of the air outlet formed by the tops of two adjacent blunt bodies is determined according to the design wind speed. The outlet cross-sectional area of ​​the guide channel 40 is controlled by adjusting the distance between the second blade 302 and the first section 3011 in the adjacent guide assembly 30 to achieve better combustion effect.

[0057] In some embodiments, see Figure 3A flow guiding channel 40 is formed between the second blade 302 and the first section 3011 of the adjacent flow guiding assembly 30. The second blade 302 and the first section 3011 of the adjacent flow guiding assembly 30 are parallel. This parallel arrangement ensures smooth flow of the auxiliary gas in the channel between the second blade 302 and the first section 3011, helping to guide the auxiliary gas along the designed path, avoiding gas dispersion or turbulence, and improving the system's fluid guidance. The parallel arrangement also helps maintain a uniform flow velocity of the auxiliary gas in the channel between the second blade 302 and the first section 3011, which helps avoid velocity differences in the auxiliary gas within the channel, reducing the generation of eddies and turbulence, and improving the stability and uniformity of the auxiliary gas. The parallel arrangement also reduces the resistance of the auxiliary gas in the channel between the second blade 302 and the first section 3011. The auxiliary gas can form a high-speed rotating jet within the flow guiding channel 40, and the auxiliary gas rotates in the same direction after exiting the outlet of each flow guiding channel 40, thereby increasing the generation rate of the vortex.

[0058] In some embodiments, the distance between the second blade 302 and the first segment 3011 in the adjacent flow guide assembly 30 is 15 to 60 mm; for example, it can be any one of 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm, 60 mm or a range between any two values.

[0059] In some embodiments, the included angle ranges from 30° to 50°, preferably 40°. By limiting the included angle between the first segment 3011 and the side surface 1022, the exit angle of the auxiliary gas in the guide channel 40 can be guaranteed to achieve a better mixing effect.

[0060] In some embodiments, see Figure 2 and Figure 6The second cylindrical body 201 includes a cylindrical portion 2011, a conical portion 2012, and a base plate 2013. The cylindrical portion 2011 is connected to the conical portion 2012. The base plate 2013 is located on the side of the conical portion 2012 away from the cylindrical portion 2011 and covers the second channel 202. Along the axial direction of the second cylindrical body 201, the distance between the end of the cylindrical portion 2011 away from the conical portion 2012 and the top surface 1021 is 50-100 mm. It can be understood that the upper part of the second cylindrical body 201 is a cylindrical structure, and the lower part is a conical structure. The second cylindrical body 201 and the first cylindrical body 101 are coaxially sleeved, which can increase the strength and stability of the structure and also realize the functions of two cylindrical bodies within a limited space, thus helping to save space. The first channel 103 and the second channel 202 are coaxially arranged. The air outlets of the multiple guide channels 40 are respectively arranged between adjacent burners 102. The cylindrical part 2011 extends 50-100 mm above the top surface 1021 of the burner 102, thereby leaving a mixing area between the outlet of the guide channel 40 and the top of the burner 102, extending the mixing time, and allowing the flare gas and auxiliary air to be fully premixed.

[0061] In some embodiments, see Figure 6 The second gas delivery assembly 20 also includes a third cylinder 203, which is connected to the side wall of the conical portion 2012 for introducing auxiliary gas into the second cylinder 201. An auxiliary gas input channel is formed inside the third cylinder 203, which is deflected a certain distance from the central axis of the burner. The auxiliary gas enters the second cylinder 201 tangentially, and in conjunction with the centrally arranged first cylinder 101, the auxiliary gas rotates counterclockwise.

[0062] In some embodiments, the burner heads 102 are uniformly arranged circumferentially along the outer wall of the first cylinder 101; the burner heads 102 are symmetrically arranged along the central axis of the first cylinder 101. Because the burner heads 102 are uniformly distributed and multiple burner heads 102 are evenly distributed among multiple air outlets, the mixing range of the flare gas and auxiliary gas is increased, allowing for thorough mixing of the flare gas and auxiliary gas, improving combustion efficiency, and eliminating the generation of black smoke.

[0063] In some embodiments, the flow channels 40 are uniformly distributed circumferentially along the first cylinder 101; the flow channels 40 are symmetrically arranged along the central axis of the first cylinder 101. The flow guide assembly 30 can fully utilize the mixing capacity of the rotating flow to quickly and uniformly mix the flare gas and the auxiliary gas. The high-speed rotating mixed airflow further entrains oxygen from the surrounding atmosphere to participate in combustion, ensuring more complete combustion.

[0064] In some embodiments, a flare system is also provided, including a dual-swirl burner.

[0065] This embodiment proposes a guide vane type dual-swirl burner, which has a jacket structure in which the first cylinder 101 and the second cylinder 201 are arranged coaxially; see [link / reference] Figure 8 Through the flow guiding component, the flare gas jet is entrained by the auxiliary gas jet ejected at a certain angle and transformed into a rotating mixed gas. The rotating jet further entrains a large amount of air for secondary air supply, greatly increasing the oxygen content of the mixed gas and achieving the effect of thorough mixing of flare gas and air for smokeless combustion. In the flow guiding component 30, the first blade 301 near the burner head 102 is tangent to the top curved surface of the burner head 102, reducing air resistance in the burner head 102 area. By adjusting the angles of the first blade 301 and the second blade 302 with the central axis of the burner, the rotation angle and swirling intensity of the outlet air are controlled. The auxiliary gas intersects with the flare gas ejected from the burner head nozzle at a certain angle, enhancing the mixing effect. The outlet auxiliary gas drives the flare gas ejected at high speed from the burner head to rotate and flow together, forming a rotating jet, which ensures thorough mixing of the circumferential gas. At the same time, the high entrainment capacity of the recirculation zone formed by the rotating jet further increases the oxygen content of the mixed gas, resulting in more complete combustion and a significant reduction in the probability of black smoke.

[0066] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0067] The foregoing has provided a detailed description of a dual-swirl burner and flare system provided in the embodiments of this application, and specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A double-swirl burner characterized by comprising: The utility model relates to a kind of torch gas transmission device, including: First gas delivery assembly (10), the first gas delivery assembly (10) includes first cylinder (101) and multiple groups of combustion head (102) arranged on the outer wall of the first cylinder (101);The first gas delivery assembly (10) has first channel (103), and the first channel (103) penetrates the first cylinder (101) and the combustion head (102) to be used for transmitting flare gas;The combustion head (102) includes top surface (1021) and two side surfaces (1022) connected with the top surface (1021); Second gas delivery assembly (20), the second gas delivery assembly (20) includes second cylinder (201), and the second cylinder (201) is arranged outside the first cylinder (101) and coaxially arranged with the first cylinder (101), and the second cylinder (201) is arranged between the first cylinder (101) and the second cylinder (201) with second channel (202), and the combustion head (102) is located in the second channel (202), and the second channel (202) is used for transmitting auxiliary gas; Flow guide assembly (30), the flow guide assembly (30) is arranged in the second channel (202) and is connected with the combustion head (102), and adjacent flow guide assembly (30) has flow guide channel (40), and the outlet of the flow guide channel (40) corresponds flare gas, and the flow guide channel (40) is mixed with auxiliary gas and flare gas by changing the flow direction of auxiliary gas; Wherein, the flow guide assembly (30) includes first blade (301), second blade (302) and baffle (303); The first blade (301) and the second blade (302) are respectively arranged on the two sides of the combustion head (102);Along the direction of the inner wall of the second cylinder (201) to the outer wall of the first cylinder (101), one side of the first blade (301) is connected with the side surface (1022), and the other side is connected with the inner wall of the second cylinder (201);One side of the second blade (302) is connected with the side surface (1022), and the other side is connected with the inner wall of the second cylinder (201); The baffle (303) is connected with the first blade (301), the second blade (302) and the combustion head (102) respectively, so that one side of the flow guide assembly (30) away from the combustion head (102) is sealed;The flow guide assembly (30) has cavity (304), and the first blade (301), the second blade (302), the baffle (303) and the combustion head (102) form the cavity (304), and the cavity (304) is located on one side of the flow guide channel (40).

2. The dual-swirl burner of claim 1, wherein The direction of the auxiliary gas flowing out of the flow guide channel (40) is the first direction (X), the direction of the flare gas flowing out of the combustion head (102) is the second direction (Y), and the first direction (X) intersects with the second direction (Y);Or, The angle between the first direction (X) and the second direction (Y) is greater than 0 ° and less than 90 °.

3. The dual-swirl burner of claim 1, wherein A plurality of groups of spaced-apart injection holes (1023) are arranged on the top surface (1021), the injection holes (1023) penetrating the top surface (1021) and communicating with the first channel (103) for the outflow of the flare gas.

4. The dual-swirl combustor according to claim 3, wherein The outlet of the flow guide channel (40) is in the same plane as the top surface (1021), or the outlet of the flow guide channel (40) is tangent to the top surface (1021).

5. The dual-swirl combustor according to claim 1, wherein The first vane (301) comprises a first segment (3011), a circular arc segment (3012) and a second segment (3013) connected in sequence. Along the outflow direction of the auxiliary gas, one side of the first segment (3011) is connected to the top surface (1021) and forms an included angle with the side surface (1022); the second segment (3013) is symmetrically arranged with the first segment (3011) along the circular arc segment (3012), and one end of the second segment (3013) away from the first segment (3011) is connected to the shielding plate (303); The second vane (302) and the first segment (3011) in the adjacent flow guide assembly (30) form the flow guide channel (40).

6. The double-swirl burner according to claim 5, characterized in that The second vane (302) is parallel to the first segment (3011) in the adjacent flow guide assembly (30); and / or The distance between the second vane (302) and the first segment (3011) in the adjacent flow guide assembly (30) is 15-60 mm; and / or The included angle is 30-50°.

7. The dual-swirl combustor according to claim 3, wherein The second cylinder (201) comprises a cylindrical part (2011), a conical part (2012) and a bottom plate (2013); the cylindrical part (2011) is connected to the conical part (2012); the bottom plate (2013) is arranged on the side of the conical part (2012) away from the cylindrical part (2011) and covers the second channel (202); Along the axis direction of the second cylinder (201), the distance between one end of the cylindrical part (2011) away from the conical part (2012) and the top surface (1021) is 50-100 mm.

8. The double-swirl burner according to claim 7, characterized in that The second gas conveying assembly (20) further comprises a third cylinder (203), the third cylinder (203) is connected to the side wall of the conical part (2012) for guiding the auxiliary gas into the second cylinder (201).

9. The dual-swirl combustor according to claim 1, wherein The combustion head (102) is uniformly arranged along the outer wall of the first cylinder (101) in the circumferential direction; and / or The combustion head (102) is centrally symmetrically arranged along the axis of the first cylinder (101).

10. The dual-swirl combustor according to claim 1, wherein The flow guide channels (40) are uniformly distributed along the circumference of the first cylinder (101); and / or The flow guide channels (40) are centrally symmetrically arranged along the axis of the first cylinder (101).

11. A flare system characterized in that, The double-swirl-type burner comprises the double-swirl-type burner according to any one of claims 1-10.

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