Ultra-low NOx and CO emission burner with high and low pressure, high and low calorific value dual fuel gas

Abstract

The present invention discloses an ultra-low NOx and CO emission burner of high-low pressure and high-low calorific value dual fuel gas, comprising a cylinder and a base plate, a first fuel cavity is fixedly mounted on the base plate, a plurality of first gas gun tubes are arranged on the first fuel cavity, a circular through hole is arranged in the middle of the first fuel cavity, a stable ignition device is fixedly mounted on the base plate by welding, the stable ignition device passes through the circular through hole of the first fuel cavity, a second fuel annular tube is fixedly mounted on the outer side of the cylinder, a plurality of connecting tubes are arranged on the second fuel annular tube, one end of the connecting tube is connected to a fixed plate; the top of the present invention is arranged as a multi-level stepped pagoda-shaped structure fire bowl brick, so that the furnace smoke forms a strong smoke reflux, the high-pressure gas gun forms a staged combustion of the fuel in the fire bowl brick, the local concentration of the burner flame is controlled, and the flame height is reduced, a swirl sheet is arranged on the top of the low-pressure gas gun, and an automatic ignition system is arranged in the stable ignition device, which can reduce the generation of NOx and CO.

Description

Technical Field

[0001] The invention relates to the technical field of petrochemical, metallurgical and industrial furnace burners, and in particular to an ultra-low NOx and CO emission burner of high-low pressure and high-low calorific value dual fuel gas. Background Art

[0002] At present, various high-pressure, high-calorific value fuel gases and various low-pressure, low-calorific value fuel gases: such as natural gas, liquefied gas, coke oven gas, blast furnace gas, converter gas, biogas, biomass gas, catalytic dry gas, self-produced dry gas and various self-produced tail gases, etc., most of them are waste gases produced by large industrial institutions. The technology for waste gas treatment is not yet mature, and the current burners cannot completely burn various high- and low-pressure, high- and low-calorific value industrial waste gases.

[0003] The burner is the core part of the heating furnace. Since the "Petroleum Refining Industry Pollutant Emission Standard" (GB 31570-2015) issued by the State Environmental Protection Administration came into effect on July 1, 2015, higher requirements have been put forward for flue gas emissions. Most of the burners of heating furnaces have been upgraded to low NOx burners, but this low NOx burner has certain limitations on fuel gas and can only burn fuel gas above 0.02MPa. Therefore, in the petrochemical, metallurgical industry and industrial kilns, a large part of the low-pressure fuel exhaust gas is vented and burned in vain through the high-altitude flame column, wasting energy. At the same time, it is difficult to meet environmental protection requirements by burning low-pressure fuel burners.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0005] In response to the above technical problems in the related technology, the present invention proposes an ultra-low NOx and CO emission burner for high-low pressure, high-low calorific value dual-fuel gas, which can be suitable for burning various high-low pressure, high-low calorific value dual-fuel gases with ultra-low NOx and CO requirements, saving resources and being environmentally friendly.

[0006] To achieve the above technical objectives, the technical solution of the present invention is implemented as follows:

[0007] A burner with ultra-low NOx and CO emission of high-low pressure and high-low calorific value dual fuel gas, comprising a cylinder and a base plate, a first fuel chamber is fixedly mounted on the base plate, a plurality of first gas gun tubes are arranged on the first fuel chamber, a circular through hole is arranged in the middle of the first fuel chamber, a stable ignition device is fixedly mounted on the base plate by welding, the stable ignition device passes through the circular through hole of the first fuel chamber, a second fuel annular tube is fixedly mounted on the outside of the cylinder, a plurality of connecting tubes are arranged on the second fuel annular tube, one end of the connecting tube is connected to a fixing plate, the fixing plate is connected to the base plate by bolts, the connecting tube is connected to a second gas gun main tube, the second gas gun main tube passes through the base plate, a fire basin brick is fixedly mounted on the top of the cylinder through a fire basin brick fixing sleeve, the top of the second gas gun main tube is fixedly mounted on the outside of the fire basin brick, and a second gas gun main tube connected to the second gas gun main tube is arranged on the inside of the fire basin brick.

[0008] Furthermore, the inner wall of the cylinder is provided with 50mm to 80mm aluminum silicate fiber cotton, the bottom plate is provided with a fire viewing hole, an air regulating port is provided on one side of the cylinder, a fire detection assembly is fixedly installed on the other side of the cylinder, and the cylinder and the bottom plate are fixedly connected by bolts.

[0009] Furthermore, an air intake pipe is connected to the bottom of the first fuel cavity, and a first fuel air intake port is provided at the end of the air intake pipe.

[0010] Furthermore, eight first gas gun barrels are arranged on the first fuel chamber.

[0011] Furthermore, a second fuel air inlet is provided on the second fuel annular pipe.

[0012] Furthermore, 10 second gas gun main pipes are arranged on the second fuel annular pipe.

[0013] Furthermore, an ignition electrode connector is installed at the bottom of the stable ignition device, a flame stabilizing cover is arranged at the top of the stable ignition device, an air inlet is arranged on the outside of the stable ignition device, the ignition electrode connector is connected to a ignition gun, the air inlet is connected to an ignition rod, and the ignition gun and the top of the ignition rod are fixed by a stabilizer.

[0014] Furthermore, a cyclone is fixedly installed in the cylinder.

[0015] Furthermore, the fire basin brick is a multi-level stepped pagoda structure, and a plurality of interconnected circular holes are evenly arranged on the side of the fire basin brick facing upward.

[0016] The beneficial effects of the present invention are as follows: the top of the present invention is arranged as a multi-level stepped pagoda-shaped structure fire bowl brick, which can make the furnace smoke form a strong smoke reflux, and the high-pressure gas gun forms a graded combustion of the fuel in the fire bowl brick, controls the local concentration of the burner flame, realizes the over-rich and over-light combustion of the fuel, and reduces the flame height. The top of the low-pressure gas gun is provided with a swirl sheet, and the stable ignition device is provided with an automatic ignition system, an automatic flame monitoring system, an automatic purge system, and an automatic cut-off interlocking system, which ensure the safe and reliable operation of the heating furnace and the burner, achieve the effect of fuel and air grading, fuel and fuel grading, and reduce the generation of NOx and CO. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic structural diagram of an ultra-low NOx and CO emission burner of high-low pressure, high-low calorific value dual-fuel gas according to an embodiment of the present invention;

[0019] Figure 2 2. It is a bottom view of an ultra-low NOx and CO emission burner of high-low pressure, high-low calorific value dual-fuel gas according to an embodiment of the present invention;

[0020] Figure 3 It is a top view of an ultra-low NOx and CO emission burner of high-low pressure, high-low calorific value dual-fuel gas according to an embodiment of the present invention;

[0021] Figure 4 is a front view of a second gas gun according to an embodiment of the present invention;

[0022] Figure 5 is a bottom view of a second gas gun according to an embodiment of the present invention;

[0023] Figure 6 is a front view of a first gas gun according to an embodiment of the present invention;

[0024] Figure 7 is a top view of a first gas gun according to an embodiment of the present invention;

[0025] Figure 8 is a schematic structural diagram of a stable ignition device according to an embodiment of the present invention;

[0026] Fig. 9 is a partial enlarged view of a stable ignition device according to an embodiment of the present invention;

[0027] Fig.10 is a front view of a cyclone according to an embodiment of the present invention;

[0028] Fig.11 is a top view of a cyclone according to an embodiment of the present invention;

[0029] Fig.12 is a front view of a brazier brick according to an embodiment of the present invention;

[0030] Fig.13 is a top view of a fire bowl brick according to an embodiment of the present invention.

[0031] In the figure:

[0032] 1. Fire basin brick; 2. Cyclone; 3. Cylinder; 4. Fire detection assembly; 5. Stable ignition device; 5-1. Gas inlet; 5-2. Ignition electrode connector; 5-3. Ignition gun; 5-4. Ignition rod; 5-5. Stabilizer; 5-6. Flame stabilizing cover; 6. First gas gun; 6-1. First gas pipe; 6-2. First fuel chamber; 7. Fire viewing hole; 8. Bottom plate; 9. Second gas gun; 9-1. Second gas gun main pipe; 9-2. Second gas gun gun pipe; 9-3. Fixing plate; 9-4. Connecting pipe; 9-5. Second fuel annular pipe; 10. Air adjustment port; 11. First fuel air inlet; 12. Second fuel air inlet. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0034] like Figure 1-3As shown, according to an embodiment of the present invention, an ultra-low NOx and CO emission burner of high-low pressure, high-low calorific value dual-fuel gas includes a cylinder 3 and a bottom plate 8, a first fuel cavity 6-2 is fixedly installed on the bottom plate 8, a plurality of first gas gun tubes 6-1 are arranged on the first fuel cavity 6-2, a circular through hole is arranged in the middle of the first fuel cavity 6-2, a stable ignition device 5 is fixed to the bottom plate 8 by welding, the stable ignition device 5 passes through the circular through hole of the first fuel cavity 6-2, a second fuel annular tube 9-5 is fixedly installed on the outer side of the cylinder 3, and the second fuel A plurality of connecting pipes 9-4 are arranged on the annular pipe 9-5, one end of the connecting pipe 9-4 is connected to a fixing plate 9-3, the fixing plate 9-3 is connected to the base plate 8 by bolts, the connecting pipe 9-4 is connected to a second gas gun main pipe 9-1, the second gas gun main pipe 9-1 passes through the base plate 8, a fire basin brick 1 is fixedly installed on the top of the cylinder 3 through a fire basin brick fixing sleeve, the top of the second gas gun main pipe 9-1 is fixedly installed on the outside of the fire basin brick 1, and a second gas gun pipe 9-2 connected to the second gas gun main pipe 9-1 is arranged on the inside of the fire basin brick 1.

[0035] In a specific embodiment of the present invention, the inner wall of the cylinder 3 is provided with 50mm to 80mm aluminum silicate fiber cotton, the bottom plate 3 is provided with a fire viewing hole 7, an air adjustment port 10 is provided on one side of the cylinder 3, and a fire detection component 4 is fixedly installed on the other side of the cylinder 3, and the cylinder 3 is fixedly connected to the bottom plate 8 by bolts.

[0036] In a specific embodiment of the present invention, an air intake pipe is connected to the bottom of the first fuel cavity 6-2, and a first fuel air intake port 11 is provided at the end of the air intake pipe.

[0037] In a specific embodiment of the present invention, eight first gas gun barrels 6-1 are arranged on the first fuel chamber 6-2.

[0038] In a specific embodiment of the present invention, a second fuel air inlet 12 is provided on the second fuel annular pipe 9 - 5 .

[0039] In a specific embodiment of the present invention, ten second gas gun main pipes 9-1 are arranged on the second fuel annular pipe 9-5.

[0040] like Figure 8-9 As shown, in a specific embodiment of the present invention, an ignition electrode connector 5-2 is installed at the bottom of the stable ignition device 5, a flame stabilizing cover 5-6 is arranged on the top of the stable ignition device 5, an air inlet 5-1 is arranged on the outside of the stable ignition device 5, the ignition electrode connector 5-2 is connected to an ignition gun 5-3, the air inlet 5-1 is connected to an ignition rod 5-4, and the ignition gun 5-3 and the top of the ignition rod 5-4 are fixed by a stabilizer 5-5.

[0041] In a specific embodiment of the present invention, a cyclone 2 is fixedly installed in the cylinder 3 .

[0042] In a specific embodiment of the present invention, the fire basin brick 1 is a multi-level stepped pagoda structure, and a plurality of interconnected circular holes are evenly arranged on the side of the fire basin brick 1 facing upward.

[0043] In a specific embodiment of the present invention, the fire basin brick 1 is a multi-level stepped pagoda structure, and a plurality of interconnected circular holes are evenly arranged on the side of the fire basin brick 1 facing upward.

[0044] In order to facilitate understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below through specific usage methods.

[0045] The ultra-low NOx and CO emission burner of high-low pressure and high-low calorific value dual-fuel gas described in the present invention is mainly composed of a fire basin brick 1, a cyclone 2, a cylinder 3, a stable ignition device 5, a first gas gun 6 and a second gas gun 9.

[0046] like Figure 4-7 As shown, the first gas gun 6 is composed of a first gas pipe 6-1 and a first fuel chamber 6-2, and the second gas gun 9 is composed of a second gas gun main pipe 9-1, a second gas gun pipe 9-2, a fixing plate 9-3, a connecting pipe 9-4 and a second fuel annular pipe 9-5.

[0047] The first gas gun 6 is a low-pressure gas gun, and the second gas gun 9 is a high-pressure gas gun.

[0048] like Figure 12-13 As shown, the fire basin brick 1 is a multi-level stepped pagoda structure, and multiple interconnected circular holes are evenly distributed around the side of the fire basin brick 1 and are inclined upward. When the high-pressure inner gas gun sprays, the flame spreads evenly to each small hole and forms a stable and uniform annular cylindrical flame, ensuring stable combustion of the flame; the outer side of the fire basin brick 1 is a multi-step inclined pagoda structure, and when the high-pressure outer gas gun sprays high-pressure gas along the inclined surface of the step of the fire basin brick 1, a negative pressure zone is formed, thereby carrying the furnace flue gas to form a strong flue gas reflux, reducing NOx generation.

[0049] like Figure 10-11 As shown, the swirler 2 is arranged in the cylinder 3. When the air passes through the swirler 2, a strong swirling wind is formed, which facilitates a more uniform mixing of the gas and the air, thereby forming a swirling and floating flame.

[0050] Aluminum silicate fiber cotton with a thickness of 50 mm to 80 mm is arranged between the inner walls of the cylinder 3. A cyclone 2, a stable ignition device 5, a low-pressure gas gun and a high-pressure gas gun are installed in the cylinder 3. The bottom plate 8 and the top plate of the cylinder 3 are finely processed by CNC machine tools to ensure that the inner high-pressure gas gun and the outer high-pressure gas gun are vertically free of deviation. For the convenience of maintenance, the bottom plate 8 is connected to the cylinder 3 with bolts, and each high-pressure gas gun can be freely drawn out of the cylinder.

[0051] The stable ignition device 5 is composed of an air inlet 5-1, an ignition electrode connector 5-2, an ignition gun 5-3, an ignition rod 5-4 and an ignition device sleeve. The air inlet 5-1, the ignition electrode connector 5-2, the ignition gun 5-3 and the ignition rod 5-4 are all installed in the ignition device sleeve. Due to the various changes in fuel gas, in order to prevent accidents, a stable ignition device 5 is installed in the center of the burner to provide a stable fire source. The stable ignition device 5 is provided with an automatic ignition system, an automatic flame monitoring system, an automatic purge system and an automatic cut-off interlocking system. Once the flame is abnormal, the automatic flame monitoring system can detect it at the same time and transmit the signal to the automatic cut-off interlocking system. The automatic cut-off interlocking system can cut off the fuel gas and close the valve at the same time, and the automatic purge system and the automatic ignition system will be carried out after the abnormality is handled; thereby ensuring the safe and reliable operation of the heating furnace and the burner.

[0052] Three types of gas guns are installed in the cylinder 3, namely, a high-pressure gas gun inner gun, a high-pressure gas gun outer gun, and a low-pressure gas gun. 8 to 20 high-pressure gas gun outer guns are evenly distributed in the outer cavity of the fire basin brick 1, and correspondingly, 8 to 20 high-pressure gas gun inner guns are evenly distributed in the inner periphery of the fire basin brick. Each high-pressure gas gun adopts different types of stainless steel pipes and high-temperature resistant material (Cr25Ni20) nozzles according to different heat loads. The high-pressure gas inner gun accounts for 15% to 25% of the total high-pressure fuel, while the air mixed with it accounts for the total amount. The first-stage combustion is carried out under a large amount of excess air, the flame temperature is low, and the generation of NOx is small. The amount of fuel is also low, thus forming oxygen-rich dispersed combustion. The high-pressure fuel gas outer gun accounts for 75% to 85% of the total high-pressure fuel. In this way, a multi-layer flame is formed around the fire basin bricks, thereby maximizing the use of the furnace space, allowing the fuel gas to burn in the largest possible space in the entire combustion chamber, so that the heat load of each part of the furnace is uniform. At the same time, the oxygen concentration in the air-to-gas mixture after the first-stage combustion has been reduced, and the second-stage fuel burner also draws the flue gas in the furnace into the combustion zone. Multiple factors together reduce the average flame temperature and peak temperature, thereby reducing NOx emissions, and effectively avoiding the production of carbon monoxide, and the combustion is stable and reliable.

[0053] Multiple circles of low-pressure gas guns are set according to different heat loads. Each circle is equipped with 8 to 20 low-pressure gas guns. Each low-pressure gas gun has a different height and is staggered. Each low-pressure gas gun is equipped with a swirl plate on the top, so as to achieve the effect of fuel and air grading, fuel and fuel grading, and reduce NOx generation.

[0054] The ultra-low NOx and CO emission burner of high-low pressure, high-low calorific value dual fuel gas described in the present invention is applied to industrial boiler combustion and is suitable for various high-pressure, high calorific value fuel gases or various low-pressure, low calorific value fuel gases. Various fuel gases can be stably burned simultaneously or separately.

[0055] During specific use, the fire basin bricks are fixedly installed in the fire basin brick sleeve with bolts and connected to the cylinder body, extending out of the furnace.

[0056] The stable ignition device is fixed in the middle of the cylinder and extends into the middle of the fire basin brick through the cyclone. The ignition rod joint is connected to the feed gas pipe, and the air inlet is connected to the air input pipe through a metal hose.

[0057] The high-pressure fuel air inlet is connected to the high-pressure air supply pipe through a metal hose, and the low-pressure fuel air inlet is connected to the low-pressure air supply pipe through a metal hose.

[0058] The inner gun of the high-pressure gas gun and the outer gun of the high-pressure gas gun are welded together to form a Y shape. Each high-pressure gas gun is fixed on the burner base plate and evenly passes through the cyclone assembly to the periphery and middle of the fire basin brick. Each high-pressure gas gun is connected to the high-pressure fuel pipe through a metal hose.

[0059] Each low-pressure gas gun is evenly arranged on the low-pressure fuel cavity and welded thereto, each low-pressure gas gun passes through the cyclone into the fire basin brick, and the low-pressure fuel cavity is welded to the bottom plate of the burner barrel.

[0060] The ignition device is lit, and the gas sprayed from the ignition device burns to form a swirling stable central flame, providing the overall combustion device with the fire source required for stable combustion. Then the high-pressure gas valve and air valve are opened to ignite the inner circle combustion, forming multiple circles of flames on the inner circle of the fire basin brick. The inner circle flame moves upward along the fire basin brick and is fully mixed with the swirling wind for concentrated and light combustion. At the same time, a small part of the inner circle flame bursts out from the inclined hole of the fire basin brick to ignite the outer ring gun. The flue gas inside the furnace forms a negative pressure area due to the special structure of the steps and inclined surfaces of the fire basin bricks, thereby forming an internal circulation of the flue gas, which makes the gas burn fully, realizes the most effective use of the flame in the industrial boiler chamber space, dilutes the oxygen content in the furnace, and produces very little NOx.

[0061] An FGR circulating flue gas system is arranged at the upper end of the burner, which is composed of a flue, elbows, valves, induced draft fans, insulation layers, expansion joints, flanges, etc. One end of the flue gas duct enters the combustion-supporting air cavity through the middle of the cylinder, and the other end is connected to the elbow, valve, expansion joint and then to the induced draft fan. The induced draft fan inlet is connected to the preheater smoke pipe through the flue, and 10% to 25% of the flue gas is drawn from the preheater smoke pipe into the combustion-supporting air cavity and mixed with the combustion air to form flue gas recirculation, dilute the oxygen content in the air, and inhibit the formation of NOx.

[0062] To sum up, with the help of the above-mentioned technical scheme of the present invention, air staging, fuel staging, oxygen enrichment, anaerobic combustion technology, flue gas internal circulation technology, and multi-point dispersed combustion technology are adopted to reduce the temperature of the high-temperature zone in the center of the flame. The adjustment ratio is large and the operation flexibility is wide, thereby realizing fuel gas staging and staged combustion. The fuel combustion is fully and completely achieved through the gas staging and staged combustion method, and the space in the industrial heating furnace is effectively utilized to disperse the flame. Through the installed fire basin bricks, a stable annular cylindrical flame is formed, the average flame temperature and peak temperature are reduced, and it is formed to form a flue gas internal circulation. At the same time, the FGR flue gas recirculation technology is added to achieve the best effect of suppressing NOx emissions, thereby achieving ultra-low NOx and low CO emissions.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-low pressure, high-low calorific value dual fuel gas ultra-low NOx, CO emission burner, comprising a cylinder (3) and a bottom plate (8), characterized in that: A first fuel chamber (6-2) is fixedly mounted on the bottom plate (8), a plurality of first gas gun tubes (6-1) are arranged on the first fuel chamber (6-2), a circular through hole is arranged in the middle of the first fuel chamber (6-2), a stable ignition device (5) is fixedly mounted on the bottom plate (8) by welding, the stable ignition device (5) passes through the circular through hole of the first fuel chamber (6-2), a second fuel annular tube (9-5) is fixedly mounted on the outside of the cylinder (3), a plurality of connecting tubes (9-4) are arranged on the second fuel annular tube (9-5), one end of the connecting tube (9-4) is connected to a fixing plate (9-3), the fixing plate (9-3) is connected to the bottom plate (8) by bolts, the connecting tube (9-4) is connected to the bottom plate (8) by bolts, and the connecting tube (9-5) is connected to the fixing plate (9-3) by bolts. The tube (9-4) is connected to a second gas gun main tube (9-1), the second gas gun main tube (9-1) passes through the bottom plate (8), the top of the cylinder (3) is fixedly mounted with a fire basin brick (1) through a fire basin brick fixing sleeve, the top of the second gas gun main tube (9-1) is fixedly mounted on the outside of the fire basin brick (1), and the inside of the fire basin brick (1) is provided with a second gas gun tube (9-2) connected to the second gas gun main tube (9-1); the fire basin brick (1) is a multi-level stepped pagoda structure, and the side of the fire basin brick (1) is evenly provided with a plurality of connected circular holes facing upward; the bottom of the first fuel cavity (6-2) is connected to an air intake pipe, and the end of the air intake pipe is provided with a first fuel air intake port (11).

2. The ultra-low NOx and CO emission burner of high-low pressure, high-low calorific value dual fuel gas according to claim 1 is characterized in that: The inner wall of the cylinder (3) is provided with aluminum silicate fiber wool with a diameter of 50 mm to 80 mm, the bottom plate (8) is provided with a fire viewing hole (7), one side of the cylinder (3) is provided with an air adjustment port (10), and the other side of the cylinder (3) is fixedly mounted with a fire detection assembly (4), and the cylinder (3) and the bottom plate (8) are fixedly connected by bolts.

3. The ultra-low NOx and CO emission burner of high-low pressure, high-low calorific value dual fuel gas according to claim 1 is characterized in that: Eight first gas gun barrels (6-1) are arranged on the first fuel chamber (6-2).

4. The ultra-low NOx and CO emission burner of high-low pressure, high-low calorific value dual fuel gas according to claim 1 is characterized in that: The second fuel annular pipe (9-5) is provided with a second fuel air inlet (12).

5. The ultra-low NOx and CO emission burner of high-low pressure, high-low calorific value dual fuel gas according to claim 4 is characterized in that: Ten second gas gun main pipes (9-1) are arranged on the second fuel annular pipe (9-5).

6. The ultra-low NOx and CO emission burner of high-low pressure, high-low calorific value dual fuel gas according to claim 1 is characterized in that: An ignition electrode connector (5-2) is installed at the bottom of the stable ignition device (5), a flame stabilizing cover (5-6) is arranged at the top of the stable ignition device (5), an air inlet (5-1) is arranged on the outside of the stable ignition device (5), the ignition electrode connector (5-2) is connected to an ignition gun (5-3), the air inlet (5-1) is connected to an ignition rod (5-4), and the ignition gun (5-3) and the top of the ignition rod (5-4) are fixed via a stabilizer (5-5).

7. The ultra-low NOx and CO emission burner of high-low pressure, high-low calorific value dual fuel gas according to claim 1 is characterized in that: A cyclone (2) is fixedly installed in the cylinder (3).

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