High-concentration odor burner adapting to flow fluctuation

Abstract

One end of an odor cavity is provided with an odor inlet pipe joint, the necking position of the other end of the odor cavity is connected with a main torch odor conveying pipe and a main torch nozzle, and a plurality of 90-degree elbows, a gas electromagnetic valve, branch torch odor conveying pipes and branch torch nozzles are evenly distributed on the outer circumference of the odor cavity in the circumferential direction. A shell end plate is installed on the odor cavity, the branch torch odor conveying pipe penetrates through the shell end plate and the servo electric adjusting air door to be connected with an air inlet branch pipe on the shell, and a spiral-flow type flame holder and a combustion cavity housing are installed at the end of the shell. The main torch odor conveying pipe, the branch torch odor conveying pipe, the fire observation hole pipe and the igniter penetrate through the spiral-flow type flame holder and are flush with the spiral-flow type flame holder, the odor cavity is provided with a pressure sensor, the main torch is designed according to the lowest odor flow, and a gas electromagnetic valve and a dynamic adjusting air door are dynamically controlled according to pressure changes to achieve stable combustion and burnout.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion of alkali recovery boilers in the pulp and paper industry, in particular to a high-concentration odor burner that is adaptable to flow fluctuations. Background Art

[0002] The high-concentration odor generated in the modern paper pulp industry process is characterized by low calorific value, about 9MJ / Nm3, high water content and low concentration. At present, in pulp and paper mills, the high-concentration odor generated is sent to the odor burner of the alkali recovery boiler for combustion, but due to the nature of the pulping process, the odor flow (pressure) fluctuates greatly, and the deviation between the maximum and minimum values ​​exceeds 100%. The odor flashes back at low flow rates, causing the odor burner system to explode. Traditional odor burners are designed according to the maximum flow rate. In order to prevent the odor burner from flashing back due to the low odor flow rate, it is necessary to add steam to mix with the odor when the odor flow rate (pressure) is low, thereby increasing the odor flow rate (pressure) and preventing flashback. However, the increase in steam is not conducive to odor combustion and will reduce the combustion temperature and combustion efficiency. The calorific value of the odor is not high, and it is easy to cause flameout or flashback when the odor pressure fluctuates. When the odor flow rate is too large, the odor will not be burned completely, which may cause high-concentration odor to escape from the high-temperature combustion zone before it can be completely burned, and then discharged into the atmosphere through the boiler chimney.

[0003] There is an existing technology that arranges an auxiliary fuel gun at the center of the odor burner, using fuel oil or gas to burn to form a stable central flame so that the odor can burn stably. This method requires additional combustion systems and fuel, and the cost of use is relatively high.

[0004] At present, there is no odor combustion technology and equipment in China that can deal with large fluctuations in odor flow. Therefore, it is necessary to design a high-concentration odor burner suitable for flow fluctuations to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a high-concentration odor burner that is adaptable to flow fluctuations, so as to solve at least one technical problem existing in the above-mentioned prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high-concentration odor burner that adapts to flow fluctuations, comprises an outer shell and an odor inlet pipe joint, the odor inlet pipe joint is connected to the end of an odor cavity, the conical cylindrical end of the odor cavity is connected to a main torch odor delivery pipe, the end of the main torch odor delivery pipe is connected to a main torch nozzle, elbows are installed on pipe seats uniformly distributed circumferentially of the odor cavity, the other end of the elbow is connected to the inlet end of a gas solenoid valve through a flexible joint, the outlet end of the gas solenoid valve is connected to a branch torch odor delivery pipe through a flexible joint, the end of the branch torch odor delivery pipe is connected to the branch torch nozzle, a plurality of the branch torch odor delivery pipes circumferentially surround the main torch odor delivery pipe, the cylindrical outer circle of the odor cavity is installed with an outer shell end plate to form a sealing structure, a plurality of the The sub-flare odor conveying pipe passes through the end plate of the outer shell and forms a sealing structure. The outer shell is connected to the end plate of the outer shell through a flange. The air inlet branch pipe on the outer shell is connected to the servo electric regulating damper. A swirl flame stabilizer is installed in the first cylindrical end hole of the outer shell. The main flare odor conveying pipe and the sub-flare odor conveying pipe pass through the swirl flame stabilizer and are flush with the swirl flame stabilizer. The fire viewing hole tube and the igniter penetrate the swirl flame stabilizer and the end plate of the outer shell. The swirl flame stabilizer and the end plate of the outer shell are penetrated through the fire viewing hole tube and the igniter. The end of the fire viewing hole tube is flush with the end of the swirl flame stabilizer. The end of the igniter is bent to reach the edge of the main flare nozzle. A combustion chamber cover is installed at the outer ring of the swirl flame stabilizer, and a pressure sensor is installed in the odor cavity.

[0008] Preferably, the outer shell includes a flange at one end of the outer shell, a second cylinder connected to the flange, a second conical cylinder connected to the second cylinder, a first cylinder connected to the second conical cylinder's narrowed end, and an air inlet branch on the second cylinder; the combustion chamber cover is welded by a first annular shell, a conical shell and a second annular shell, the inner diameter of the first annular shell matches the outer ring of the swirl flame stabilizer and is welded to the outer ring, and the combustion chamber cover is made of high temperature corrosion resistant material.

[0009] Preferably, the odor cavity includes an odor inlet pipe joint connected to the end of the odor cavity, the front section of the odor cavity is cylindrical, the cylinder is circumferentially evenly distributed with connected pipe seats, the end of the cylinder is conical, and a pressure sensor is installed on the cylindrical part.

[0010] Preferably, the swirl flame stabilizer is assembled and welded by an outer ring, an inner ring, a first intermediate ring, and a second intermediate ring. Between the outer ring and the first intermediate ring are a number of inclined first annular swirl air nozzle blades, between the inner ring and the second intermediate ring are a number of inclined second annular swirl air nozzle blades, an annular steel plate is connected between the first intermediate ring and the second intermediate ring, a number of sub-torch hole outlet holes and air vents are opened on the annular steel plate, a fire viewing hole tube outlet hole is left at the first annular swirl air nozzle blade between the outer ring and the first intermediate ring, the igniter can pass through the air hole and then bend to point to the main torch nozzle, and the swirl flame stabilizer is made of high temperature corrosion resistant materials.

[0011] Preferably, the sub-flare nozzle and the main flare nozzle comprise a frustum shape and an inner cavity, and the sub-flare nozzle and the main flare nozzle are evenly provided with a plurality of small holes on the conical surface, the rear end of the main flare nozzle is connected to the end of the main flare odor conveying pipe, and a plurality of the sub-flare nozzles are connected to a plurality of sub-flare odor conveying pipes.

[0012] A high-concentration odor burner that adapts to flow fluctuations, comprising an odor inlet pipe joint, a shell, a swirl flame stabilizer, a fire viewing hole tube and an igniter, the shell is connected to the shell end plate through a flange, the air inlet branch pipe on the shell is connected to the servo electric adjustment damper, a swirl flame stabilizer is installed in the first cylindrical end hole of the shell, the fire viewing hole tube and the igniter penetrate the swirl flame stabilizer and the shell end plate, the odor inlet pipe joint is connected to the end of the odor cavity, an annular distribution box is installed at the rear end of the odor cavity, the annular distribution box is installed on the outer wall of the odor cavity through a support plate, at least one annular distribution box inlet pipe joint is evenly distributed on the outside of the annular distribution box, and the annular distribution box inlet pipe joint is connected to the end of the odor cavity. The outlet pipe joint is connected to the high-pressure air pipeline, and a plurality of annular distribution box outlet pipe joints are evenly distributed on the inner side of the annular distribution box, each of the annular distribution box outlet pipe joints is connected to the tee through a hose and a flexible joint, the middle interface of the tee is connected to the outlet end of the gas solenoid valve through a flexible joint, the inlet end of the gas solenoid valve is connected to the pipe seat of the odor cavity through a flexible joint, the outlet end of the tee is connected to the sub-torch odor delivery pipe through a flexible joint, high-pressure air flows into the sub-torch odor delivery pipe through the annular distribution box outlet pipe joint and the tee, and the compressed air flow rate of the flare nozzle at the end of the sub-torch odor delivery pipe is controlled to be higher than the odor combustion rate; a pressure sensor is installed in the odor cavity.

[0013] Preferably, the outer shell includes a flange at one end of the outer shell, a second cylinder connected to the flange, a second conical cylinder connected to the second cylinder, a first cylinder connected to the second conical cylinder's narrowed end, and an air inlet branch on the second cylinder; the combustion chamber cover is welded by a first annular shell, a conical shell and a second annular shell, the inner diameter of the first annular shell matches the outer ring of the swirl flame stabilizer and is welded to the outer ring, and the combustion chamber cover is made of high temperature corrosion resistant material.

[0014] Preferably, the swirl flame stabilizer is assembled and welded by an outer ring, an inner ring, a first intermediate ring, and a second intermediate ring. Between the outer ring and the first intermediate ring are a number of inclined first annular swirl air nozzle blades, between the inner ring and the second intermediate ring are a number of inclined second annular swirl air nozzle blades, an annular steel plate is connected between the first intermediate ring and the second intermediate ring, a number of sub-torch hole outlet holes and air vents are opened on the annular steel plate, a fire viewing hole tube outlet hole is left at the first annular swirl air nozzle blade between the outer ring and the first intermediate ring, the igniter can pass through the air hole and then bend to point to the main torch nozzle, and the swirl flame stabilizer is made of high temperature corrosion resistant materials.

[0015] Preferably, the sub-flare nozzle and the main flare nozzle comprise a frustum shape and an inner cavity, and the sub-flare nozzle and the main flare nozzle are evenly provided with a plurality of small holes on the conical surface, the rear end of the main flare nozzle is connected to the end of the main flare odor conveying pipe, and a plurality of the sub-flare nozzles are connected to a plurality of sub-flare odor conveying pipes.

[0016] Compared with the prior art, the utility model provides a high-concentration odor burner that adapts to flow fluctuations and has the following beneficial effects:

[0017] 1. A high-concentration odor burner suitable for flow fluctuations. When the odor flow is at its lowest, the main torch located in the center of the burner can still burn stably without flashback. Therefore, the measure of adding steam to mix with the odor when the odor flow is low can be cancelled, avoiding changes and reductions in the odor combustion calorific value, avoiding unfavorable odor combustion, and reducing combustion temperature and combustion efficiency.

[0018] 2. The main flare is always in stable combustion and will not flash back. Therefore, the method of arranging an auxiliary fuel gun for stable combustion in the center of the odor burner can be eliminated, avoiding the additional addition of a fuel (or gas) supply system and additional fuel consumption, thereby reducing the cost of use.

[0019] 3. An odor pressure sensor is installed on the odor chamber, and gas solenoid valves are installed on several sub-torches. Several sub-torches can correspond to several pressure conditions. As the pressure conditions change, different numbers of sub-torch gas solenoid valves can be opened accordingly through the control box, so that the flow of the main torch and the sub-torches is relatively stable, creating good conditions for stable combustion.

[0020] 4. A servo-electric damper valve is installed at the combustion air inlet. The opening of the servo-electric damper valve changes with the combustion load, so that the combustion can obtain the best air volume.

[0021] 5. A swirl flame stabilizer is installed at the nozzle of the odor burner. The swirl flame stabilizer can produce 100% swirl of the combustion-supporting air. The rotation direction of the first annular swirl air is opposite to that of the second annular swirl air, which is conducive to the full mixing and combustion of the odor and air, forming swirl combustion, and playing a flame stabilizing role for odors with low calorific value.

[0022] 6. The utility model has a simple structure and is easy to manufacture and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a 3D front view of the first embodiment of the utility model;

[0024] Figure 2 It is a 3D rear view of the first embodiment of the utility model;

[0025] Figure 3 It is an internal 3D view of the first embodiment of the utility model;

[0026] Figure 4 3D view of the internal main torch and sub-torches of the first embodiment of the utility model;

[0027] Figure 5 This is a 3D view of the swirl flame stabilizer of the utility model;

[0028] Figure 6 It is a 3D rear view of the second embodiment of the utility model;

[0029] Figure 7 It is an internal 3D view of the second embodiment of the utility model;

[0030] In the figure: 1, odor inlet pipe joint; 2, odor cavity; 2a, cylindrical; 2b, pipe seat; 2c, cone-shaped cylinder one; 3, 90 degree elbow; 4, gas solenoid valve; 5, sub-torch odor delivery pipe; 6, sub-torch nozzle; 7, main torch odor delivery pipe; 8, main torch nozzle; 9, shell end plate; 10, shell; 10a, flange; 10b, second cylindrical; 10c, cone-shaped cylinder two; 10d, first cylindrical; 10e, air inlet branch pipe; 11, servo electric damper; 12, combustion chamber cover; 12a, first annular shell; 12b, cone shell; 12 c, second annular shell; 13, swirl flame stabilizer; 13a, outer ring; 13b, inner ring; 13c, first intermediate ring; 13d, second intermediate ring; 13e, first annular swirl air nozzle blade; 13f, second annular swirl air nozzle blade; 13g, annular steel plate; 13h, torch hole; 13i, air vent; 13j, fire viewing hole pipe outlet hole; 14, fire viewing hole pipe; 15, igniter; 16, pressure sensor, 17, annular distribution box; 18, annular distribution box inlet pipe joint; 19, annular distribution box outlet pipe joint; 20, tee; 21, support plate. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0033] Embodiment 1:

[0034] like Figure 1-5As shown, the odor inlet pipe joint 1 is connected to the end of the odor cavity 2, the conical cylindrical 2c contraction end of the odor cavity 2 is connected to the main torch odor delivery pipe 7, the main torch nozzle 8 is connected to the end of the main torch odor delivery pipe 7, and a 90-degree elbow 3 is installed on the pipe seat 2b uniformly distributed circumferentially of the odor cavity 2. The other end of the 90-degree elbow 3 is connected to the inlet end of the gas solenoid valve 4 through a flexible joint, and the outlet end of the gas solenoid valve 4 is connected to the sub-torch odor delivery pipe 5 through a flexible joint. The end of the sub-torch odor delivery pipe 5 is connected to the sub-torch nozzle 6. A plurality of sub-torch odor delivery pipes 5 surround the main torch odor delivery pipe 7 circumferentially, and the main torch odor delivery pipe 7 is connected to the main torch nozzle 6. The outer circle of the shell is installed with a shell end plate 9 to form a sealing structure, a plurality of sub-torch odor conveying pipes 5 pass through the shell end plate 9 to form a sealing structure, the shell 10 is bolted to the shell end plate 9 through a flange 10a, the servo-electrically adjustable damper 11 is connected to the air inlet branch pipe 10e on the shell 10, a swirl flame stabilizer 13 is installed in the end hole of the first cylindrical 10d of the shell 10, the main torch odor conveying pipe 7 and the sub-torch odor conveying pipe 5 pass through the swirl flame stabilizer 13 and are flush with the swirl flame stabilizer 13, the fire viewing hole tube 14 and the igniter 15 pass through the swirl flame stabilizer 13 and the shell end plate 9, and the end of the fire viewing hole tube 14 is connected to the swirl flame stabilizer 13. The end of the flame stabilizer 13 is flush, and the end of the igniter 15 is bent to reach the edge of the main torch nozzle 8. A combustion chamber cover 12 is installed at the outer ring 13a of the swirl flame stabilizer 13, and a pressure sensor 16 is installed in the odor cavity 2. The main torch odor conveying pipe 7 is designed according to the odor flow rate at the lowest load and the flow rate of the small hole of the main torch nozzle 8 is greater than the odor combustion speed. As the odor flow rate gradually increases, the pressure sensor 16 in the odor cavity 2 sends a pressure increase signal to the electric control cabinet, which drives the gas solenoid valve 4 to open in turn through the electric control cabinet. The increased flow in the odor cavity 2 is sequentially diverted to the sub-torch odor conveying pipe 5, and the odor passes through the sub-torch odor conveying pipe 5. The torch nozzle 6 performs diffusion combustion, and the electrical control cabinet sequentially controls the servo-electrically adjustable damper 11 to gradually increase the combustion-supporting air flow rate until the odor burner reaches the maximum load; as the odor flow rate gradually decreases, the pressure sensor 16 in the odor cavity 2 sends a pressure reduction signal to the electrical control cabinet, and the gas solenoid valve 4 is sequentially closed through the electrical control cabinet, and the servo-electrically adjustable damper 11 is sequentially driven by the electrical control cabinet to gradually reduce the combustion-supporting air flow rate until the odor burner reaches the minimum load. The whole process can maintain the pressure in the odor cavity 2 relatively stable, thereby ensuring that the odor flow rate in the main torch odor delivery pipe 7 is basically stable, so that the main torch nozzle 8 burns stably.

[0035] like Figure 1-2 As shown, the shell 10 includes a flange 10a at one end of the shell 10, a second cylinder 10b connected to the flange 10a, a second conical cylinder 10c connected to the second cylinder 10b, a first cylinder 10d connected to the conical cylinder 10c at the constricted end, and an air inlet branch 10e on the second cylinder 10b.

[0036] like Figure 3-5 As shown, the odor cavity 2 includes an odor inlet pipe joint 1 connected to the end of the odor cavity 2, the front section of the odor cavity 2 is cylindrical 2a, pipe seats 2b connected to the odor cavity 2 are evenly distributed in the circumference of the cylindrical 2a odor cavity 2, the end of the cylindrical 2a odor cavity 2 is a conical cylinder 2c, and a pressure sensor 16 is installed in the cylindrical 2a portion of the odor cavity 2.

[0037] like Figure 5 As shown, the swirl flame stabilizer 13 includes an outer ring 13a, an inner ring 13b, a first intermediate ring 13c, and a second intermediate ring 13d, which are assembled and welded. Between the outer ring 13a and the first intermediate ring 13c are a plurality of inclined first annular swirl air nozzle blades 13e, between the inner ring 13b and the second intermediate ring 13d are a plurality of inclined second annular swirl air nozzle blades 13f, between the first intermediate ring 13c and the second intermediate ring 13d is an annular steel plate 13g connected between the first intermediate ring 13c and the second intermediate ring 13d, on which are opened a plurality of sub-torch holes 13h through holes and air holes 13i, and at the first annular swirl air nozzle blade 13e between the outer ring 13a and the first intermediate ring 13c, a fire viewing hole tube 14 through hole 13j is left, and the igniter 15 can pass through the air hole 13i and then bend to point to the main torch nozzle 8, and the swirl flame stabilizer 13 is made of high temperature corrosion resistant material.

[0038] like Figure 4 As shown, the sub-flare nozzle 6 and the main flare nozzle 8 include a frustum of a cone and an inner cavity, and the sub-flare nozzle 6 and the main flare nozzle 8 are evenly provided with a plurality of holes on the conical surface, the rear end of the main flare nozzle 8 is connected to the end of the main flare odor delivery pipe 7, and a plurality of sub-flare nozzles 6 are connected to a plurality of sub-flare odor delivery pipes 5, and the sub-flare nozzle 6 and the main flare nozzle 8 are both made of high temperature corrosion resistant materials.

[0039] like Figure 1-3 As shown, the combustion chamber cover 12 is welded by a first annular shell 12a, a conical shell 12b and a second annular shell 12c. The inner diameter of the first annular shell 12a matches the outer ring 13a of the swirl flame stabilizer 13 and is welded to the outer ring 13a. The combustion chamber cover 12 is made of high temperature corrosion resistant material.

[0040] Embodiment 2:

[0041] like Figure 6-7As shown, on the basis of Example 1, the split torch is changed to premixed combustion, an annular distribution box 17 is installed at the rear end of the odor chamber 2, and the annular distribution box 17 is installed on the outer wall of the odor chamber 2 through a support plate 21. At least one annular distribution box inlet pipe joint 18 is evenly distributed on the outside of the annular distribution box 17, and the annular distribution box inlet pipe joint 18 is connected to the high-pressure air pipeline. A plurality of annular distribution box outlet pipe joints 19 are evenly distributed on the inside of the annular distribution box 17, and each annular distribution box outlet pipe joint 19 is connected to a tee through a hose and a flexible joint. 20 is connected, the middle interface of the tee 20 is connected to the outlet end of the gas solenoid valve 4 through a flexible joint, the inlet end of the gas solenoid valve 4 is connected to the pipe seat 2b of the odor cavity 2 through a flexible joint, the outlet end of the tee 20 is connected to the sub-torch odor delivery pipe 5 through a flexible joint, and the high-pressure air flows into the sub-torch odor delivery pipe 5 through the annular distribution box outlet pipe joint 19 and the tee 20, and the compressed air flow rate of the torch nozzle 6 at the end of the sub-torch odor delivery pipe 5 is controlled to be higher than the odor combustion speed; a pressure sensor 16 is installed in the odor cavity 2, and the main torch odor The delivery pipe 7 is designed according to the odor flow rate at the lowest load. As the odor flow rate gradually increases, the pressure sensor 16 in the odor cavity 2 sends a pressure increase signal to the electric control cabinet, and the gas solenoid valve 4 is opened in sequence through the electric control cabinet. The increased flow in the odor cavity 2 is sequentially diverted to the flare odor delivery pipe 5 through the gas solenoid valve 4 and the three-way 20. In the flare odor delivery pipe 5, the odor is premixed with air, and then diffused combustion is carried out through the flare nozzle 6. The electric control cabinet sequentially drives the servo electric regulating damper 11 to gradually increase the combustion-supporting air flow, until the odor burner reaches the maximum load; as the odor flow gradually decreases, the pressure sensor 16 in the odor cavity 2 sends a pressure reduction signal to the electric control cabinet, which drives the gas solenoid valve 4 to be closed in sequence through the electric control cabinet, and drives the servo electric regulating damper 11 in sequence through the electric control cabinet to gradually reduce the combustion air flow, until the odor burner reaches the minimum load. The whole process can maintain the pressure in the odor cavity 2 relatively stable, thereby ensuring that the odor flow in the main torch odor delivery pipe 7 is basically stable, so that the main torch nozzle 8 burns stably.

[0042] like Figure 1-2 As shown, the shell 10 includes a flange 10a at one end of the shell 10, a second cylinder 10b connected to the flange 10a, a second conical cylinder 10c connected to the second cylinder 10b, a first cylinder 10d connected to the conical cylinder 10c at the constricted end, and an air inlet branch 10e on the second cylinder 10b.

[0043] like Figure 3-4As shown, the odor cavity 2 includes an odor inlet pipe joint 1 connected to the end of the odor cavity 2, the front section of the odor cavity 2 is cylindrical 2a, and pipe seats 2b connected to the odor cavity 2 are evenly distributed in the circumference of the cylindrical 2a odor cavity 2, and the end of the cylindrical 2a odor cavity 2 is conical 2c, and the main torch odor delivery pipe 7 is connected to the conical 2c contracted end of the odor cavity 2, and a pressure sensor 16 is installed in the cylindrical 2a part of the odor cavity 2.

[0044] like Figure 5 As shown, the swirl flame stabilizer 13 comprises an outer ring 13a, an inner ring 13b, a first intermediate ring 13c and a second intermediate ring 13d which are assembled and welded together. Between the outer ring 13a and the first intermediate ring 13c are a plurality of inclined first annular swirl air nozzle blades 13e, between the inner ring 13b and the second intermediate ring 13d are a plurality of inclined second annular swirl air nozzle blades 13f, between the first intermediate ring 13c and the second intermediate ring 13d is an annular steel plate 13g connected between the first intermediate ring 13c and the second intermediate ring 13d, on which are opened a plurality of sub-torch holes 13h through holes and air vents 13i, and at the first annular swirl air nozzle blades 13e between the outer ring 13a and the first intermediate ring 13c is an through hole 13j for a fire viewing hole tube 14, the igniter 15 can pass through the air vent 13i and then bend to point to the main torch nozzle 8, and the swirl flame stabilizer 13 is made of high temperature corrosion resistant material.

[0045] like Figure 4 As shown, the sub-flare nozzle 6 and the main flare nozzle 8 include a frustum of a cone and an inner cavity, and the sub-flare nozzle 6 and the main flare nozzle 8 are evenly provided with a plurality of holes on the conical surface, the rear end of the main flare nozzle 8 is connected to the end of the main flare odor delivery pipe 7, and a plurality of sub-flare nozzles 6 are connected to a plurality of sub-flare odor delivery pipes 5, and the sub-flare nozzle 6 and the main flare nozzle 8 are both made of high temperature corrosion resistant materials.

[0046] like Figure 1-3 As shown, the combustion chamber cover 12 is welded by a first annular shell 12a, a conical shell 12b and a second annular shell 12c. The inner diameter of the first annular shell 12a matches the outer ring 13a of the swirl flame stabilizer 13 and is welded to the outer ring 13a. The combustion chamber cover 12 is made of high temperature corrosion resistant material.

[0047] In summary of the above embodiments, the main torch located at the center of the burner of the utility model can still burn stably and will not flash back when the odor flow is at the lowest. Therefore, the measure of adding steam to mix with the odor when the odor flow is low can be cancelled, avoiding changing and reducing the calorific value of odor combustion, avoiding unfavorable odor combustion, and reducing the combustion temperature and combustion efficiency.

[0048] The main flare is always in stable combustion and will not flash back, so the method of arranging an auxiliary fuel gun for stable combustion in the center of the odor burner can be eliminated, avoiding the additional addition of a fuel (or gas) supply system and additional fuel consumption, thereby reducing the cost of use.

[0049] An odor pressure sensor is installed on the odor chamber, and gas solenoid valves are installed on several sub-torches. Several sub-torches can correspond to several pressure conditions. As the pressure conditions change, different numbers of sub-torch gas solenoid valves can be opened accordingly through the control box, so that the flow of the main torch and the sub-torches is relatively stable, creating good conditions for stable combustion.

[0050] A servo-electric damper valve is installed at the combustion air inlet. The opening of the servo-electric damper valve changes with the combustion load, so that the combustion can obtain the best air volume.

[0051] A swirl flame stabilizer is installed at the nozzle of the odor burner. The swirl flame stabilizer can produce 100% swirl of the combustion-supporting air. The swirl direction of the first annular swirl air is opposite to the swirl direction of the second annular swirl air, which is conducive to the full mixing and combustion of the odor and air, forming swirl combustion, and playing a flame stabilizing role for odors with low calorific value.

[0052] The utility model has a simple structure and is easy to manufacture and maintain.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-concentration odor burner that adapts to flow fluctuations, characterized in that: The invention comprises a housing (10) and an odor inlet pipe joint (1), wherein the odor inlet pipe joint (1) is connected to the end of an odor cavity (2), a conical cylindrical first (2c) contracted end of the odor cavity (2) is connected to a main flare odor delivery pipe (7), and the end of the main flare odor delivery pipe (7) is connected to a main flare nozzle (8), and an elbow (3) is installed on a pipe seat (2b) uniformly distributed in the circumferential direction of the odor cavity (2), and the other end of the elbow (3) is connected to the inlet end of a gas solenoid valve (4) through a flexible joint. The outlet end of the gas solenoid valve (4) is connected to the sub-torch odor delivery pipe (5) through a flexible joint, the end of the sub-torch odor delivery pipe (5) is connected to the sub-torch nozzle (6), a plurality of the sub-torch odor delivery pipes (5) circumferentially surround the main torch odor delivery pipe (7), the cylindrical outer circle of the odor cavity (2) is installed with a shell end plate (9) to form a sealing structure, a plurality of the sub-torch odor delivery pipes (5) pass through the shell end plate (9) and form a sealing structure, the shell (10) The housing (10) is connected to the housing end plate (9) via a flange (10a); the air inlet branch pipe (10e) on the housing (10) is connected to the servo electric damper (11); a swirl flame stabilizer (13) is installed in the end hole of the first cylindrical portion (10d) of the housing (10); the main flare odor conveying pipe (7) and the branch flare odor conveying pipe (5) pass through the swirl flame stabilizer (13) and are flush with the swirl flame stabilizer (13); the fire viewing hole pipe (14) and the igniter (15) pass through the swirl flame stabilizer (13); The swirl flame stabilizer (13) and the shell end plate (9) are connected to each other, the swirl flame stabilizer (13) and the shell end plate (9) are penetrated by a fire viewing hole tube (14) and an igniter (15), the end of the fire viewing hole tube (14) is flush with the end of the swirl flame stabilizer (13), the end of the igniter (15) is bent to reach the edge of the main torch nozzle (8), a combustion chamber cover (12) is installed at the outer ring (13a) of the swirl flame stabilizer (13), and a pressure sensor (16) is installed in the odor cavity (2).

2. A high-concentration odor burner adaptable to flow fluctuations according to claim 1, characterized in that: The shell (10) comprises a flange (10a) at one end of the shell (10), a second cylindrical shape (10b) connected to the flange (10a), a second conical cylinder (10c) connected to the second cylindrical shape (10b), a first cylindrical shape (10d) connected to the conical cylinder (10c) at the constricted end, and an air inlet branch pipe (10e) on the second cylindrical shape (10b); the combustion chamber cover (12) is welded by a first annular shell (12a), a conical shell (12b) and a second annular shell (12c); the inner diameter of the first annular shell (12a) matches the outer ring (13a) of the swirl flame stabilizer (13) and is welded to the outer ring (13a); the combustion chamber cover (12) is made of a material resistant to high temperature corrosion.

3. A high-concentration odor burner adaptable to flow fluctuations according to claim 1, characterized in that: The odor cavity (2) comprises an odor inlet pipe joint (1) connected to the end of the odor cavity (2); the front section of the odor cavity (2) is cylindrical (2a); the circumference of the cylinder (2a) is evenly distributed with connected pipe seats (2b); the end of the cylinder (2a) is a conical cylinder (2c); and a pressure sensor (16) is installed in the cylinder (2a).

4. A high-concentration odor burner adaptable to flow fluctuations according to claim 1, characterized in that: The swirl flame stabilizer (13) is assembled and welded by an outer ring (13a), an inner ring (13b), a first intermediate ring (13c), and a second intermediate ring (13d); between the outer ring (13a) and the first intermediate ring (13c) are a plurality of inclined first annular swirl air nozzle blades (13e); between the inner ring (13b) and the second intermediate ring (13d) are a plurality of inclined second annular swirl air nozzle blades (13f); between the first intermediate ring (13c) and the second intermediate ring (13d) are a plurality of inclined second annular swirl air nozzle blades (13f); An annular steel plate (13g) is connected between the outer ring (13a) and the first intermediate ring (13c). A plurality of torch holes (13h) and ventilation holes (13i) are opened on the annular steel plate (13g). A fire-viewing hole tube (14) through-hole (13j) is left at the first annular swirl air nozzle blade (13e) between the outer ring (13a) and the first intermediate ring (13c). The igniter (15) can pass through the ventilation hole (13i) and then bend to point to the main torch nozzle (8). The swirl flame stabilizer (13) is made of high-temperature corrosion-resistant materials.

5. The high-concentration odor burner adaptable to flow fluctuation according to claim 1, characterized in that: The sub-flare nozzle (6) and the main flare nozzle (8) include a truncated cone shape and an inner cavity. The sub-flare nozzle (6) and the main flare nozzle (8) are evenly distributed with a plurality of holes on the conical surface. The rear end of the main flare nozzle (8) is connected to the end of the main flare odor conveying pipe (7), and a plurality of the sub-flare nozzles (6) are connected to a plurality of sub-flare odor conveying pipes (5).

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