Combustor

Abstract

The utility model belongs to the technical field of combustors, and discloses a combustor which comprises a burner block, a combustion-supporting gas supply unit and a fuel gas supply unit, the burner block is provided with a combustion-supporting gas flow channel and an injection channel and located in a hearth of a heating furnace, and the combustion-supporting gas flow channel comprises a first end and a second end communicated with the combustion-supporting gas supply unit. An incandescent light with formed first flame extending out of the first end is arranged in the combustion-supporting gas flow channel, the two ends of the injection channel communicate with the hearth and the combustion-supporting gas flow channel correspondingly, the fuel gas supply unit comprises a first spray head and a second spray head provided with a third spray hole pointing to the injection channel, and the first spray head is provided with a first spray hole and a second spray hole; the first spraying hole points to the first flame, fuel sprayed out of the first spraying hole is mixed with the combustion-supporting gas at the first end to form second flame, the second spraying hole points to the second flame, the second spraying hole and the first spraying hole are distributed at a diffusion angle in the direction from the second end to the first end, and therefore the second flame can be stabilized, and emission of nitric oxide can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, and in particular to a burner. Background Technology

[0002] With the rapid development of the petrochemical and chemical industries, especially the accelerated expansion of the ethylene industry, the market has put forward more stringent environmental protection standards for ethylene cracking furnace burner technology. Among them, the application demand for ultra-low nitrogen oxide burners is becoming increasingly urgent, showing broad application potential.

[0003] In existing technologies, nitrogen oxide production is typically reduced by suppressing the flame zone temperature. However, this leads to a dispersed flame pattern, interfering with the uniformity of heat distribution within the furnace and affecting overall efficiency and control. Therefore, this method is unsuitable for the requirements of ethylene cracking furnaces. Furthermore, existing burners suffer from poor flame stability.

[0004] Therefore, there is an urgent need to develop a burner to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a burner that can reduce nitrogen oxide emissions and stabilize the second flame.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The burner includes:

[0008] Burner bricks are used to be installed in the furnace of a heating furnace. The burner bricks are provided with a combustion-supporting flow channel and an injection channel. The combustion-supporting flow channel includes a first end and a second end. A continuous lamp is installed in the combustion-supporting flow channel. The first flame formed by the continuous lamp can extend out of the first end. The two ends of the injection channel are respectively connected to the furnace and the combustion-supporting flow channel.

[0009] A gas-supporting supply unit is connected to the second end;

[0010] The fuel gas supply unit includes a first nozzle and a second nozzle, both disposed inside the furnace and located outside the combustion-supporting gas flow channel. The first nozzle has a first nozzle hole and a second nozzle hole. The first nozzle hole is configured to point towards a first flame extending from a first end. The fuel gas ejected from the first nozzle hole can mix with the combustion-supporting gas at the first end and burn to form a second flame. The second nozzle hole is configured to point towards the second flame. Along the direction from the second end to the first end, the second nozzle hole and the first nozzle hole are distributed at a diffusion angle. The second nozzle has a third nozzle hole, which is positioned towards the ejector channel.

[0011] Optionally, the first nozzle is further provided with a fourth nozzle, which is configured to point towards the second flame and in the direction from the second end to the first end, and the fourth nozzle, the second nozzle, and the first nozzle are distributed at a diffusion angle.

[0012] Optionally, the second nozzle is further provided with a fifth nozzle and a sixth nozzle, both of which are configured to point toward the second flame and in the direction from the second end to the first end, with the fifth nozzle and the sixth nozzle distributed at a diffusion angle.

[0013] Optionally, the fuel gas supply unit further includes a first gas supply pipe and a second gas supply pipe, both of which are connected to a fuel gas supply source. The first gas supply pipe is equipped with a first control valve, and the second gas supply pipe is equipped with a second control valve. The first nozzle is connected to the first gas supply pipe, and the second nozzle is connected to the second gas supply pipe.

[0014] Optionally, the fuel gas supply unit further includes a third nozzle, which is disposed inside the furnace and outside the combustion gas flow channel. The third nozzle has a seventh nozzle and an eighth nozzle, both of which are configured to point toward the second flame and in the direction from the second end to the first end. The seventh nozzle and the eighth nozzle are distributed at a diffusion angle.

[0015] Optionally, the burner brick includes a positioning wall configured to fit against the furnace wall of the heating furnace, and the first nozzle, the second nozzle, and the third nozzle are all located on the side of the burner brick away from the positioning wall.

[0016] Optionally, the burner brick also includes a guide wall, which is disposed opposite to the positioning wall. In the direction from the second end to the first end, the guide wall, at least in the downstream area of ​​the combustion-supporting flow channel, is inclined toward the positioning wall.

[0017] Optionally, the gas-supporting supply unit includes a bellows and an air regulator. One end of the bellows is connected to a second end, and the other end of the bellows is connected to the gas-supporting supply source through the air regulator.

[0018] Optionally, the inner wall of the bellows is provided with a heat insulation layer and / or a sound-absorbing layer;

[0019] And / or, the inner wall of the air conditioner is provided with a heat insulation layer and / or a sound-absorbing layer.

[0020] The beneficial effects of this utility model are:

[0021] The fuel gas supply unit includes a first nozzle and a second nozzle, both located inside the furnace and outside the combustion gas flow channel. The first nozzle has a first nozzle hole and a second nozzle hole. The first nozzle hole points to the first flame extending from the first end of the combustion gas flow channel, so that the first nozzle hole can spray fuel gas toward the first flame. The fuel gas sprayed from the first nozzle hole mixes with the combustion gas at the first end and is ignited by the first flame to form a second flame. Thus, when the first nozzle hole continuously sprays fuel gas to the first flame, the effect of stabilizing the second flame can be achieved.

[0022] On the other hand, since the flow direction of the combustion gas is from the second end to the first end, the root of the second flame faces the first end, and the top of the second flame is located on the side of the first end away from the second end. The second nozzle of the burner points to the second flame, and the second nozzle and the first nozzle are distributed at a diffusion angle along the direction from the second end to the first end. This allows the fuel gas ejected from the second nozzle and the fuel gas ejected from the first nozzle to be distributed at different positions of the second flame in the direction from the second end to the first end, achieving multi-point combustion and fuel staging, thereby reducing nitrogen oxide emissions.

[0023] On the other hand, the burner brick is equipped with an ejector channel, the two ends of which are connected to the furnace and the combustion-supporting gas flow channel, respectively. The third nozzle of the second nozzle points to the ejector channel, so that the third nozzle can inject fuel gas into the ejector channel, thereby creating a negative pressure field in the ejector channel. Under the action of the negative pressure field, the flue gas in the furnace near the ejector channel is drawn into the ejector channel and enters the combustion-supporting gas flow channel. In the combustion-supporting gas flow channel, this part of the flue gas mixes with the combustion-supporting gas and fuel gas and burns at the second flame, thereby realizing flue gas recirculation and achieving the effect of reducing nitrogen oxide emissions. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the burner provided by this utility model;

[0025] Figure 2 yes Figure 1 Schematic diagram of the structure from the B-direction perspective;

[0026] Figure 3 This is a schematic diagram of the first structure of the first sub-nozzle provided by this utility model;

[0027] Figure 4 This is a schematic diagram of the second structure of the first sub-nozzle provided by this utility model;

[0028] Figure 5 This is a schematic diagram of the first structure of the second sub-nozzle provided by this utility model;

[0029] Figure 6 This is a schematic diagram of the second structure of the second sub-nozzle provided by this utility model;

[0030] Figure 7 This is a schematic diagram of the first structure of the second nozzle provided by this utility model;

[0031] Figure 8 This is a schematic diagram of the second structure of the second nozzle provided by this utility model;

[0032] Figure 9 This is a schematic diagram of the first structure of the third nozzle provided by this utility model;

[0033] Figure 10 This is a schematic diagram of the second structure of the third nozzle provided by this utility model;

[0034] Figure 11 yes Figure 1 A schematic diagram of the structure from the A-direction viewpoint.

[0035] In the picture:

[0036] 10. Furnace chamber; 20. Furnace wall; 30. Process pipe;

[0037] 100. Burner brick; 110. Combustion-supporting flow channel; 111. First end; 112. Second end; 120. Injector channel; 131. Positioning wall; 132. Guide wall; 200. Constant flame; 310. First flame; 320. Second flame; 410. First nozzle; 411. First nozzle hole; 412. Second nozzle hole; 413. Fourth nozzle hole; 4101. First sub-nozzle; 4102. Second... Sub-nozzle; 420, Second nozzle; 421, Third nozzle; 422, Fifth nozzle; 423, Sixth nozzle; 430, First air supply pipe; 440, Second air supply pipe; 450, Third nozzle; 451, Seventh nozzle; 452, Eighth nozzle; 510, Air box; 520, Air regulator; 521, Damper shaft; 5211, Manual adjustment grip; 5212, Damper control fixture connection. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0042] This embodiment provides a burner that can reduce nitrogen oxide emissions and stabilize the second flame.

[0043] Specifically, such as Figures 1 to 8As shown, the burner includes a burner brick 100, a combustion gas supply unit, and a fuel gas supply unit. The burner brick 100 is installed inside the furnace chamber 10 of the heating furnace. The burner brick 100 has a combustion gas flow channel 110 and an ejector channel 120. The combustion gas flow channel 110 includes a first end 111 and a second end 112. A continuous flame 200 is installed inside the combustion gas flow channel 110, and the first flame 310 formed by the continuous flame 200 extends out from the first end 111. The two ends of the ejector channel 120 are respectively connected to the furnace chamber 10 and the combustion gas flow channel 110. The combustion gas supply unit is connected to the second end 112 and is used to supply combustion gas (usually air or other combustion gases) to the combustion gas flow channel 110. The fuel gas supply unit includes components all installed inside the furnace chamber 10 and located within the combustion gas flow channel 110. The first nozzle 410 and the second nozzle 420 are located outside the airflow channel 110. Both the first nozzle 410 and the second nozzle 420 can eject fuel gas (usually fuel gas such as natural gas). The first nozzle 410 is provided with a first nozzle 411 and a second nozzle 412. The first nozzle 411 is configured to point towards the first flame 310 extending from the first end 111. The fuel gas ejected from the first nozzle 411 can mix with the combustion-supporting gas at the first end 111 and burn to form the second flame 320. The second nozzle 412 is configured to point towards the second flame 320. The second nozzle 412 and the first nozzle 411 are distributed at a diffusion angle along the direction from the second end 112 to the first end 111. The second nozzle 412 and the first nozzle 411 are provided with a third nozzle 421, which is set towards the ejector channel 120.

[0044] Based on the above design, the fuel gas supply unit includes a first nozzle 410 and a second nozzle 420, both disposed within the furnace 10 and located outside the combustion-supporting gas flow channel 110. The first nozzle 410 has a first nozzle 411 and a second nozzle 412. The first nozzle 411 points towards the first flame 310 extending from the first end 111 of the combustion-supporting gas flow channel 110, allowing the first nozzle 411 to spray fuel gas towards the first flame 310. The fuel gas sprayed from the first nozzle 411 mixes with the combustion-supporting gas at the first end 111 and is ignited by the first flame 310 to form the second flame 320. Therefore, when the first nozzle 411 continuously sprays fuel gas into the first flame 310, the effect of stabilizing the second flame 320 can be achieved. Furthermore, this structure facilitates the use of the first flame 310 to ignite the fuel gas and form the second flame 320. After being sprayed from the first nozzle 411, the fuel gas can be quickly ignited by the first flame 310 to form the second flame 320.

[0045] On the other hand, since the flow direction of the combustion gas is from the second end 112 to the first end 111, the flame root of the second flame 320 faces the first end 111, and the flame top of the second flame 320 is located on the side of the first end 111 away from the second end 112. The second nozzle 412 of the burner points to the second flame 320, and the second nozzle 412 and the first nozzle 411 are distributed at a diffusion angle along the direction from the second end 112 to the first end 111, so that the fuel gas ejected from the second nozzle 412 and the fuel gas ejected from the first nozzle 411 can be distributed at different positions of the second flame 320 in the direction from the second end 112 to the first end 111, realizing multi-point combustion and fuel staging, thereby achieving the effect of reducing nitrogen oxide emissions.

[0046] On the other hand, the burner brick 100 is provided with an ejector channel 120. The two ends of the ejector channel 120 are connected to the furnace 10 and the combustion-supporting gas flow channel 110, respectively. The third nozzle 421 of the second nozzle 420 points to the ejector channel 120, so that the third nozzle 421 can inject fuel gas into the ejector channel 120, thereby forming a negative pressure field in the ejector channel 120. Under the action of the negative pressure field, the flue gas in the furnace 10 near the ejector channel 120 is drawn into the ejector channel 120 and enters the combustion-supporting gas flow channel 110. In the combustion-supporting gas flow channel 110, this part of the flue gas mixes with the combustion-supporting gas and fuel gas and burns at the second flame 320, thereby realizing flue gas recirculation and achieving the effect of reducing nitrogen oxide emissions.

[0047] In this embodiment, the burner brick 100 and the gas-supporting flow channel 110 are roughly square in shape. Of course, in other embodiments, they can also be other shapes, depending on the actual application requirements.

[0048] Optionally, the fuel gas supply unit further includes a first gas supply pipe 430 and a second gas supply pipe 440. Both the first gas supply pipe 430 and the second gas supply pipe 440 are connected to a fuel gas supply source. The first gas supply pipe 430 is equipped with a first control valve (not shown in the figure), and a first nozzle 410 is connected to the first gas supply pipe 430. The opening and closing of the first nozzle 410 can be controlled by controlling the opening and closing of the first control valve. The second gas supply pipe 440 is equipped with a second control valve (not shown in the figure), and a second nozzle 420 is connected to the second gas supply pipe 440. The connection allows for the control of the second nozzle 420's opening and closing by controlling the second control valve. This structure enables independent control of the first nozzle 410 and the second nozzle 420. In practical applications, both the first and second control valves can be opened simultaneously, causing both nozzles 410 and 420 to spray fuel gas. Alternatively, only one control valve can be opened while the other is closed, resulting in one nozzle spraying fuel gas while the other does not. This structure allows the burner to be adapted to different operating loads and improves the burner's control ratio. It should be noted that the first and second control valves can be common valves in the field; their specific structures and operating principles will not be elaborated here.

[0049] Optionally, the first nozzle 410 is further provided with a fourth nozzle 413, which is configured to point towards the second flame 320 and in the direction from the second end 112 to the first end 111. The fourth nozzle 413, the second nozzle 412, and the first nozzle 411 are distributed at a diffusion angle, so that the fuel gas ejected from the fourth nozzle 413, the fuel gas ejected from the second nozzle 412, and the fuel gas ejected from the first nozzle 411 in the direction from the second end 112 to the first end 111 can be distributed at different positions of the second flame 320, thereby improving the multi-point combustion and fuel staging effect and further reducing nitrogen oxide emissions.

[0050] Optionally, the second nozzle 420 is further provided with a fifth nozzle 422 and a sixth nozzle 423. Both the fifth nozzle 422 and the sixth nozzle 423 are configured to point towards the second flame 320 and in the direction from the second end 112 to the first end 111. The fifth nozzle 422 and the sixth nozzle 423 are distributed at a diffusion angle. In the direction from the second end 112 to the first end 111, the fuel gas ejected from the fifth nozzle 422 and the fuel gas ejected from the sixth nozzle 423 can be distributed at different positions of the second flame 320, which improves the multi-point combustion and fuel staging effect, and can further reduce nitrogen oxide emissions.

[0051] Optionally, such as Figure 9 and Figure 10As shown, the fuel gas supply unit also includes a third nozzle 450. In this embodiment, the third nozzle 450 is connected to the second gas supply pipe 440. Of course, in other embodiments, the third nozzle 450 may be connected to the first gas supply pipe 430. Alternatively, a third gas supply pipe may be provided, with one end connected to the fuel gas supply source and the other end connected to the third nozzle 450, and a third control valve may be provided on the third gas supply pipe. The third nozzle 450 is disposed inside the furnace 10 and outside the combustion flow channel 110. The third nozzle 450 is provided with a seventh nozzle 451 and an eighth nozzle 452. Both the seventh nozzle 451 and the eighth nozzle 452 are configured to point towards the second flame 320 and in the direction from the second end 112 to the first end 111. The seventh nozzle 451 and the eighth nozzle 452 are distributed at a diffusion angle. In the direction from the second end 112 to the first end 111, the fuel gas ejected from the seventh nozzle 451 and the fuel gas ejected from the eighth nozzle 452 can be distributed at different positions of the second flame 320, which further improves the multi-point combustion and fuel staging effect, and thus further reduces nitrogen oxide emissions.

[0052] It should be noted that the above-mentioned distribution with diffusion angle refers to the different spray angles of each nozzle. Taking this embodiment as an example, in this embodiment, the direction from the second end 112 to the first end 111 is the vertically upward direction. The fourth nozzle 413, the second nozzle 412, and the first nozzle 411 of the first nozzle 410 are distributed with diffusion angles in the direction from the second end 112 to the first end 111. That is to say, the heights at which the fuel gas is ejected from the fourth nozzle 413, the second nozzle 412, and the first nozzle 411 are different. Among them, the height of the fuel gas ejected from the first nozzle 411 is the lowest, the height of the fuel gas ejected from the second nozzle 412 is higher than the height of the fuel gas ejected from the first nozzle 411, and the height of the fuel gas ejected from the fourth nozzle 413 is higher than the height of the fuel gas ejected from the second nozzle 412. The fifth nozzle 422 and the sixth nozzle 423 of the second nozzle 420 are distributed at a diffusion angle in the direction from the second end 112 to the first end 111. That is, the fuel gas ejected from the fifth nozzle 422 and the sixth nozzle 423 is at different heights, with the sixth nozzle 423 ejecting fuel gas at a higher height than the fifth nozzle 422. Similarly, the seventh nozzle 451 and the eighth nozzle 452 of the third nozzle 450 are distributed at a diffusion angle in the direction from the second end 112 to the first end 111. That is, the fuel gas ejected from the seventh nozzle 451 and the eighth nozzle 452 is at different heights, with the eighth nozzle 452 ejecting fuel gas at a higher height than the seventh nozzle 451.

[0053] In practical applications, the heights at which fuel gas is ejected from the fourth nozzle 413, the second nozzle 412, and the first nozzle 411 of the first nozzle 410 can be adjusted according to actual application requirements. The heights at which fuel gas is ejected from the fifth nozzle 422 and the sixth nozzle 423 of the second nozzle 420 can be adjusted according to actual application requirements. The heights at which fuel gas is ejected from the seventh nozzle 451 and the eighth nozzle 452 of the third nozzle 450 can be adjusted according to actual application requirements.

[0054] Optionally, such as Figure 1 and Figure 2 As shown, the burner brick 100 includes a positioning wall 131, which is configured to fit against the furnace wall 20 of the heating furnace. The first nozzle 410, the second nozzle 420, and the third nozzle 450 are all located on the side of the burner brick 100 away from the positioning wall 131. This structure allows the first nozzle 410, the second nozzle 420, and the third nozzle 450 to spray fuel gas toward the furnace wall 20, thereby causing the second flame 320 to deflect toward the furnace wall 20 to form a wall-attached flame, which is beneficial for lengthening the length of the second flame 320. In addition, a process tube 30 is usually provided in the heating furnace. The process tube 30 is located on the side of the burner brick 100 in the furnace chamber 10 away from the furnace wall 20. The structure provided in this embodiment causes the second flame 320 to be deflected towards the furnace wall 20 to form a wall-attached flame, which helps to lengthen the distance between the second flame 320 and the process tube 30, thereby reducing the probability of the second flame 320 impacting the process tube 30 and reducing the probability of the process tube 30 experiencing local high temperature problems. This plays a role in extending the operating cycle of the process tube 30 and the heating furnace.

[0055] Furthermore, the burner brick 100 also includes a guide wall 132, which is disposed opposite to the positioning wall 131. Along the direction from the second end 112 to the first end 111, at least in the downstream region of the combustion-supporting gas flow channel 110, the guide wall 132 is inclined toward the positioning wall 131, so that the downstream region of the combustion-supporting gas flow channel 110 has a gradually narrowing structure, thereby achieving the rectification effect of the combustion-supporting gas in the combustion-supporting gas flow channel 110. In addition, this structure has a good guiding effect on the combustion-supporting gas flowing out from the first end 111, so that this part of the combustion-supporting gas can flow obliquely toward the furnace wall 20 in the direction from the second end 112 to the first end 111. This promotes the second flame 320 to deflect further toward the furnace wall 20, further lengthens the second flame 320, and further lengthens the distance between the second flame 320 and the process pipe 30.

[0056] In this embodiment, the guide wall 132 located in the downstream region of the gas-supporting flow channel 110 is inclined toward the positioning wall 131 in the direction from the second end 112 to the first end 111. Of course, in other embodiments, the entire guide wall 132 may be inclined toward the positioning wall 131 in the direction from the second end 112 to the first end 111.

[0057] Optionally, such as Figure 2 As shown, there is one third nozzle 450, and two first nozzles 410 and two second nozzles 420. The two first nozzles 410 are symmetrically distributed on both sides of the third nozzle 450, and the two second nozzles 420 are symmetrically distributed on both sides of the third nozzle 450, to ensure a more uniform distribution of fuel gas supply. Figure 1 and Figure 2 As shown, in the direction from the guide wall 132 to the positioning wall 131, the continuous lamp 200 is positioned directly opposite the third nozzle 450, while the two first nozzles 410 are symmetrically distributed on both sides of the third nozzle 450. That is, the two first nozzles 410 are not directly opposite the continuous lamp 200. However, since the first nozzles 411 on both first nozzles 410 are configured to point towards the first flame 310 formed by the continuous lamp 200, the structures of the two first nozzles 410 are slightly different in this embodiment. Specifically, as shown... Figures 2 to 6 As shown, the first nozzles 411 on the two first nozzles 410 are symmetrically arranged about the third nozzle 450. Figure 3 and Figure 4 As shown Figure 2 The first nozzle 410, located on the upper side, is referred to here as the first sub-nozzle 4101. Figure 5 and Figure 6 As shown Figure 2 The first nozzle 410 located on the lower side is referred to here as the second sub-nozzle 4102. The first nozzle 411 on the first sub-nozzle 4101 and the first nozzle 411 on the second sub-nozzle 4102 are symmetrical about the third nozzle 450, so that both first nozzles 411 can point to the first flame 310 formed by the lamp 200.

[0058] In other implementations, the first nozzle 410, the second nozzle 420, and the third nozzle 450 can also be other numbers, such as one, two, three, or four, etc. The first nozzle 410, the second nozzle 420, and the third nozzle 450 can also be distributed in other ways, such as the first nozzle 410, the second nozzle 420, and the third nozzle 450 being arranged alternately in sequence, etc., depending on the actual application requirements.

[0059] Optionally, the gas supply unit includes a bellows 510 and a gas regulator 520. One end of the bellows 510 is connected to the second end 112, and the other end of the bellows 510 is connected to the gas supply source through the gas regulator 520. The gas regulator 520 can adjust the air volume of the gas entering the bellows 510, thereby adjusting the gas supply to the gas flow channel 110.

[0060] It should be noted that the specific structure and working principle of the above-mentioned air conditioner 520 are existing technologies in this field, and will not be described in detail here.

[0061] Optionally, such as Figure 11 As shown, the damper shaft 521 of the air regulator 520 is equipped with a manual adjustment grip 5211 and a damper control fixture connection part 5212. The air volume of the combustion gas entering the air box 510 can be adjusted by manual rotation. That is, the operator holds the manual adjustment grip 5211 and rotates the damper shaft 521, so that the valve plate (not shown in the figure) connected to the damper shaft 521 inside the air regulator 520 can be rotated. Alternatively, the damper control fixture connection part 5212 can be connected to the burner damper control fixture. The first connecting arm of the burner damper control fixture can be connected to the damper control fixture connection part 5212 to achieve the effect of adjusting multiple air regulators 520. The specific structure and working principle of the burner damper control fixture are existing technologies and will not be described in detail here.

[0062] Furthermore, the inner wall of the air box 510 is provided with a thermal insulation layer and a sound-absorbing layer (neither shown in the figure), which achieve the effects of thermal insulation, energy saving, and noise reduction. In this embodiment, the thermal insulation layer is an aluminum silicate refractory fiber layer, and the sound-absorbing layer is a porous metal plate. The sound-absorbing layer is located on the side of the thermal insulation layer facing away from the inner wall of the air box 510. In another embodiment, the thermal insulation layer is located on the side of the sound-absorbing layer facing away from the inner wall of the air box 510, or the thermal insulation layer and the sound-absorbing layer are alternately arranged along the extension direction of the air box 510. In yet another embodiment, the thermal insulation layer is a polyurethane foam layer or a glass wool layer, etc., and the sound-absorbing layer is a rock wool board layer or a glass fiber sound insulation cotton layer, etc. In yet another embodiment, the inner wall of the air box 510 is provided with either a thermal insulation layer or a sound-absorbing layer, depending on the actual application requirements.

[0063] Furthermore, the inner wall of the air conditioner 520 is provided with a heat insulation layer and a sound-absorbing layer, which achieve the effects of heat preservation, energy saving, and noise reduction. In this embodiment, the heat insulation layer is an aluminum silicate refractory fiber layer, and the sound-absorbing layer is a porous metal plate. The sound-absorbing layer is located on the side of the heat insulation layer facing away from the inner wall of the air conditioner 520. In another embodiment, the heat insulation layer is located on the side of the sound-absorbing layer facing away from the inner wall of the air conditioner 520, or the heat insulation layer and the sound-absorbing layer are alternately arranged along the extension direction of the air duct of the air conditioner 520. In yet another embodiment, the heat insulation layer is a polyurethane foam layer or a glass wool layer, etc., and the sound-absorbing layer is a rock wool board layer or a glass fiber sound insulation cotton layer, etc. In yet another embodiment, the inner wall of the air conditioner 520 is provided with either a heat insulation layer or a sound-absorbing layer, depending on the actual application requirements.

[0064] In other implementations, at least one of the inner walls of the bellows 510 and the air conditioner 520 may be provided with a heat insulation layer and a sound-absorbing layer, depending on the actual application requirements.

[0065] Optionally, the bellows 510 is fixed to the bottom plate of the heating furnace by bolts, and the air regulator 520 is fixed to the bellows 510 by bolts. In this embodiment, the air regulator 520 is fixed to the side wall of the bellows 510. The burner brick 100 is placed on the brick support plate of the bellows 510. The first gas supply pipe 430 and the second gas supply pipe 440 are both fixed to the bottom plate of the bellows 510 by bolts. The continuous lamp 200 includes a tube body and a burner nozzle. The tube body passes through the bellows 510 and is fixed to the bottom plate of the bellows 510 by bolts. A first flame 310 is formed at the burner nozzle.

[0066] The burner provided in this embodiment is mainly used in ethylene cracking furnaces, that is, the above-mentioned heating furnace refers to ethylene cracking furnaces. Of course, in other embodiments, it is also applicable to other types of heating furnaces.

[0067] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A burner, characterized in that, include: A burner brick (100) is used to be installed in the furnace (10) of a heating furnace. The burner brick (100) is provided with a combustion-supporting flow channel (110) and an ejector channel (120). The combustion-supporting flow channel (110) includes a first end (111) and a second end (112). A continuous lamp (200) is provided in the combustion-supporting flow channel (110). The first flame (310) formed by the continuous lamp (200) can extend out of the first end (111). The two ends of the ejector channel (120) are respectively connected to the furnace (10) and the combustion-supporting flow channel (110). A gas-supporting gas supply unit is connected to the second end (112); The fuel gas supply unit includes a first nozzle (410) and a second nozzle (420) both disposed within the furnace (10) and located outside the combustion-supporting gas flow channel (110). The first nozzle (410) is provided with a first nozzle (411) and a second nozzle (412). The first nozzle (411) is configured to point towards the first flame (310) extending from the first end (111). The fuel gas ejected from the first nozzle (411) can mix with the combustion-supporting gas at the first end (111) and burn to form a second flame (320). The second nozzle (412) is configured to point towards the second flame (320). Along the direction from the second end (112) towards the first end (111), the second nozzle (412) and the first nozzle (411) are distributed at a diffusion angle. The second nozzle (420) is provided with a third nozzle (421), which is positioned towards the ejector channel (120).

2. The burner according to claim 1, characterized in that, The first nozzle (410) is also provided with a fourth nozzle (413), which is configured to point toward the second flame (320) and in the direction from the second end (112) toward the first end (111). The fourth nozzle (413), the second nozzle (412) and the first nozzle (411) are distributed at a diffusion angle.

3. The burner according to claim 1, characterized in that, The second nozzle (420) is also provided with a fifth nozzle (422) and a sixth nozzle (423), both of which are configured to point toward the second flame (320) and in the direction from the second end (112) toward the first end (111), and the fifth nozzle (422) and the sixth nozzle (423) are distributed at a diffusion angle.

4. The burner according to claim 1, characterized in that, The fuel gas supply unit further includes a first gas supply pipe (430) and a second gas supply pipe (440). Both the first gas supply pipe (430) and the second gas supply pipe (440) are connected to a fuel gas supply source. The first gas supply pipe (430) is provided with a first control valve, and the second gas supply pipe (440) is provided with a second control valve. The first nozzle (410) is connected to the first gas supply pipe (430), and the second nozzle (420) is connected to the second gas supply pipe (440).

5. The burner according to any one of claims 1-4, characterized in that, The fuel gas supply unit further includes a third nozzle (450), which is disposed inside the furnace (10) and outside the combustion-supporting flow channel (110). The third nozzle (450) is provided with a seventh nozzle (451) and an eighth nozzle (452). The seventh nozzle (451) and the eighth nozzle (452) are both configured to point towards the second flame (320) and in the direction from the second end (112) to the first end (111). The seventh nozzle (451) and the eighth nozzle (452) are distributed at a diffusion angle.

6. The burner according to claim 5, characterized in that, The burner brick (100) includes a positioning wall (131) configured to fit against the furnace wall (20) of the heating furnace. The first nozzle (410), the second nozzle (420) and the third nozzle (450) are all located on the side of the burner brick (100) away from the positioning wall (131).

7. The burner according to claim 6, characterized in that, The burner brick (100) further includes a guide wall (132), which is disposed opposite to the positioning wall (131). Along the direction from the second end (112) to the first end (111), the guide wall (132) is inclined toward the positioning wall (131) at least in the downstream region of the combustion-supporting flow channel (110).

8. The burner according to any one of claims 1-4, characterized in that, The gas supply unit includes a bellows (510) and a gas regulator (520). One end of the bellows (510) is connected to the second end (112), and the other end of the bellows (510) is connected to the gas supply source through the gas regulator (520).

9. The burner according to claim 8, characterized in that, The inner wall of the air box (510) is provided with a heat insulation layer and / or a sound-absorbing layer; And / or, the inner wall of the air conditioner (520) is provided with a heat insulation layer and / or a sound-absorbing layer.

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