CN111520721A - Low-NOx-emission efficient energy-saving combustor capable of burning heavy oil, oil slurry and fuel gas - Google Patents
Low-NOx-emission efficient energy-saving combustor capable of burning heavy oil, oil slurry and fuel gas Download PDFInfo
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- CN111520721A CN111520721A CN202010259570.8A CN202010259570A CN111520721A CN 111520721 A CN111520721 A CN 111520721A CN 202010259570 A CN202010259570 A CN 202010259570A CN 111520721 A CN111520721 A CN 111520721A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
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- F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
- F23D17/002—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel gaseous or liquid fuel
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Abstract
The invention discloses a low-NOx-emission efficient energy-saving burner capable of burning heavy oil, oil slurry and gas, which comprises a fire pan brick, wherein a combustion-supporting air passage which penetrates through the fire pan brick is formed in the center of the fire pan brick, a silencing barrel is fixedly connected to the bottom of the fire pan brick, an air regulator is arranged at the lower part of the silencing barrel, the bottom of the silencing barrel is detachably connected with the lower end of an oil gun assembly and the lower end of a gas gun assembly, the oil gun assembly comprises an inner oil gun and an outer oil gun, the gas gun assembly comprises an outer gas gun and an inner gas gun, the upper end of the inner oil gun and the upper end of the inner gas gun both extend into the combustion-supporting air passage, the upper part of the outer side surface of the fire pan brick inwards shrinks into a conical surface, and the conical surface, the combustion-supporting air passage and the top of the fire. The burner is suitable for burning heavy oil, oil slurry and various fuel gases, can control the local concentration in the flame of the burner, realizes the over-rich and over-lean combustion of the fuel, and realizes the low NOx combustion emission.
Description
Technical Field
The invention relates to the technical field of burners, in particular to a low-NOx-emission efficient energy-saving burner capable of burning heavy oil, oil slurry and fuel gas.
Background
The existing oil-gas combined burner only burns diesel oil with good viscosity and fuel gas with fuel pressure higher than 0.02MPa, and most of the existing oil-gas combined burners are provided with an oil gun in the middle, a plurality of gas guns at the periphery, and large and small fire pan bricks; incomplete atomization and too concentrated flame in the center; the smoke emission does not reach the standard, and particularly the NOx emission is ultrahigh; when heavy oil, slurry oil, and asphalt having high viscosity are burned, black smoke is emitted from a stack, and when fuel gas having a fuel pressure of 0.02MPa or less is burned, tempering occurs. Heavy oil and slurry oil have high heat value, low cost and large storage capacity, so that the development of a low NOx emission combustor capable of combusting the heavy oil, the slurry oil and various fuel gases is urgent and has wide market.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
Aiming at the technical problems in the related art, the invention provides the low-NOx-emission efficient energy-saving combustor capable of combusting heavy oil, oil slurry and fuel gas, which can combust heavy oil, oil slurry and various fuel gases, has good effect and has far lower smoke emission than the national environmental protection requirement.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
a low NOx emission efficient energy-saving burner capable of burning heavy oil, slurry oil and gas comprises a fire basin brick, wherein a combustion air passage which penetrates through the fire basin brick from top to bottom is formed in the center of the fire basin brick, a silencing barrel is fixedly connected to the bottom of the fire basin brick, the interior of the silencing barrel is communicated with the combustion air passage, an air regulator is arranged on the lower portion of the silencing barrel, the bottom of the silencing barrel is detachably connected with the lower end of an oil gun assembly and the lower end of a gas gun assembly, the oil gun assembly comprises at least one inner oil gun and a plurality of outer oil guns, the gas gun assembly comprises a plurality of gas outer guns and gas inner guns which respectively correspond to the gas outer guns one by one, the upper ends of the inner oil guns and the gas inner guns all extend into the combustion air passage, the upper ends of the outer oil guns and the upper ends of the gas outer guns all surround the outside of the fire basin brick, the upper portion of the outer side face of the fire pan brick is inwards contracted into a conical face, and the conical face, the combustion air channel and the top of the fire pan brick are communicated with one another through a plurality of round holes.
Furthermore, the fire basin brick is fixedly connected in the fire basin brick sleeve, and the bottom of the fire basin brick sleeve is fixedly connected with the top of the noise reduction barrel.
Furthermore, the silencing barrel comprises an inner barrel and an outer barrel, aluminum silicate fiber cotton is filled between the inner barrel and the outer barrel, a porous flow distribution plate is fixedly arranged inside the inner barrel, and the oil gun assembly and the gas gun assembly penetrate through the porous flow distribution plate.
Furthermore, the top of the silencing barrel is provided with an ignition hole and an ignition hole.
Furthermore, the bottom of the silencing barrel is detachably connected with the lower end of the pilot burner, and the upper end of the pilot burner extends into the combustion air channel.
Further, the lower extreme fixed connection of rifle corresponds in the gas the middle part of the outer rifle of gas and the two communicate each other, the upper end of rifle in the gas with the upper end of the outer rifle of gas all is provided with the shower nozzle, the multirow orifice has been seted up on the shower nozzle, the lower extreme of the outer rifle of gas runs through be connected with a takeover through first metal collapsible tube behind the bottom of amortization barrel, all the takeover communicates each other through the loop type barrel, be provided with gas connection on the loop type barrel, the lower extreme fixedly connected with fixed connection plate of the outer rifle of gas, the bottom detachably of amortization barrel connects fixed connection plate.
Further, interior oil gun with outer oil gun all includes oil gun outer tube and oil gun inner tube, oil gun outer tube connection has the oil gun connecting pipe, all the oil gun connecting pipe communicates each other through second metal collapsible tube, oil gun inner tube connection has oil gun connecting branch pipe, all oil gun connecting branch pipe communicates each other through third metal collapsible tube, the oil gun inner tube lower extreme of interior oil gun is connected with oil gun flange, the lower extreme of the oil gun outer tube of interior oil gun is connected with atomizing steam flange or compressed air flange.
Further, the lower extreme fixedly connected with oil gun connecting plate of oil gun outer tube, the bottom detachably of amortization barrel connects the oil gun connecting plate.
Further, the upper end of interior oil gun with the upper end of outer oil gun all is provided with oil shower nozzle subassembly, oil shower nozzle subassembly includes oil shower nozzle and blender, the upper end of the lower extreme sealing connection adapter sleeve of oil shower nozzle, the lower extreme of adapter sleeve is connected the upper end of oil gun outer tube, the lower extreme of blender is located in the adapter sleeve and connect the upper end of oil gun inner tube, the middle part of blender with the upper end sealing connection of adapter sleeve, the upper end of blender is located in the oil shower nozzle, the lower extreme of blender is inside through first through-hole intercommunication inside the lower extreme of adapter sleeve, the upper end of blender is inside through second through-hole intercommunication inside the oil shower nozzle.
Further, the air register is provided with an FGR flue gas circulation system.
The invention has the beneficial effects that: the burner is suitable for burning heavy oil, oil slurry and various fuel gases, can control the local concentration in the flame of the burner, realizes the over-concentration and over-dilution burning of the fuel, realizes the low NOx burning emission, and has good effect, and the smoke emission is far lower than the national environmental protection requirement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a front cross-sectional view of a low NOx emission, high efficiency, energy efficient burner capable of burning heavy oil, slurry oil and fuel gas in accordance with an embodiment of the present invention;
FIG. 2 is a top view of a low NOx emission energy efficient burner capable of burning heavy oil, slurry oil and gas in accordance with an embodiment of the present invention;
FIG. 3 is a sectional view taken along the line A of the low NOx emission high efficiency energy saving burner capable of burning heavy oil, slurry oil and gas according to the embodiment of the present invention;
FIG. 4 is a view of the direction B of the low NOx emission high efficiency energy saving burner capable of burning heavy oil, slurry oil and fuel gas according to the embodiment of the present invention;
FIG. 5 is a front view of a gas gun assembly according to an embodiment of the present invention;
FIG. 6 is a top view of a gas gun assembly according to an embodiment of the present invention;
FIG. 7 is a front view of an oil gun assembly according to an embodiment of the present invention;
FIG. 8 is a top view of an oil gun assembly according to an embodiment of the present invention;
FIG. 9 is a cross-sectional view of an oil spray head assembly according to an embodiment of the present invention;
FIG. 10 is a front cross-sectional view of a firebox tile according to an embodiment of the present invention;
FIG. 11 is a top view of a firebrick in accordance with embodiments of the present invention.
In the figure:
1. a fire pan brick; 2. a gas gun assembly; 3. a noise reduction cylinder; 4. a beacon light; 5. an oil gun assembly; 6. a register; 7. a porous manifold; 8. stabilizing the cyclone; 9. a gas outer gun; 10. a gas inner gun; 11. a spray head; 12. fixing the connecting plate; 13. a ring-shaped barrel; 14. a branch pipe; 15. a first metal hose; 16. a gas joint; 17. an oil spray head; 18. a mixer; 19. connecting sleeves; 20. an oil spray head assembly; 21. an outer tube of the oil gun; 22. an oil gun inner tube; 23. an oil gun connecting plate; 24. an oil gun connecting pipe; 25. the oil gun is connected with a branch pipe; 26. a third metal hose; 27. an oil gun connecting flange; 28. the atomized steam is connected with the flange; 29. a circular hole; 30. a fire observation hole; 31. and an ignition hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
As shown in fig. 1 to 11, the low NOx emission high efficiency energy saving burner capable of burning heavy oil, slurry oil and gas according to the embodiment of the present invention includes a firebox brick 1, a combustion air passage passing through the firebox brick 1 is formed at the center of the firebox brick, a noise reduction cylinder 3 is fixedly connected to the bottom of the firebox brick 1, the noise reduction cylinder 3 is communicated with the combustion air passage, an air regulator 6 is disposed at the lower part of the noise reduction cylinder 3, the bottom of the noise reduction cylinder 3 is detachably connected to the lower end of an oil gun assembly 5 and the lower end of a gas gun assembly 2, the oil gun assembly 5 includes at least one inner oil gun and a plurality of outer oil guns, the gas gun assembly 2 includes a plurality of gas outer guns 9 and gas inner guns 10 corresponding to the gas outer guns 9 one by one, the upper ends of the inner oil guns and the upper ends of the gas inner guns 10 both extend into the combustion air passage, the upper end of outer oil gun and the upper end of the outer rifle 9 of gas all centers on the outside of firebrick 1, the lateral surface upper portion of firebrick 1 inwards contracts into the conical surface, the conical surface combustion air passageway and the top of firebrick 1 all communicates each other through a plurality of round holes 29.
In a specific embodiment of the present invention, the brazier brick 1 is fixedly connected in a brazier brick sleeve, and the bottom of the brazier brick sleeve is fixedly connected with the top of the noise reduction cylinder 3.
In a specific embodiment of the present invention, the silencing cylinder 3 includes an inner cylinder and an outer cylinder, aluminum silicate fiber wool is filled between the inner cylinder and the outer cylinder, a porous flow distribution plate 7 is fixedly arranged inside the inner cylinder, and both the oil gun assembly 5 and the gas gun assembly 2 penetrate through the porous flow distribution plate 7.
In an embodiment of the present invention, the top of the silencing cylinder 3 is opened with a fire observation hole 30 and an ignition hole 31.
In a specific embodiment of the present invention, the bottom of the silencing cylinder 3 is detachably connected with the lower end of the pilot burner 4, and the upper end of the pilot burner 4 extends into the combustion air channel.
In a specific embodiment of the present invention, the lower end of the gas inner gun 10 is fixedly connected to the middle of the corresponding gas outer gun 9, and the two are communicated with each other, the upper end of the gas inner gun 10 and the upper end of the gas outer gun 9 are both provided with a nozzle 11, the nozzle 11 is provided with a plurality of rows of spray holes, the lower end of the gas outer gun 9 penetrates through the bottom of the silencing cylinder 3 and is connected to a branch pipe 14 through a first metal hose 15, all the branch pipes 14 are communicated with each other through an annular barrel 13, the annular barrel 13 is provided with a gas joint 16, the lower end of the gas outer gun 9 is fixedly connected to a fixed connection plate 12, and the bottom of the silencing cylinder 3 is detachably connected to the fixed connection plate 12.
In an embodiment of the present invention, each of the inner oil gun and the outer oil gun includes an outer oil gun tube 21 and an inner oil gun tube 22, the outer oil gun tube 21 is connected to an oil gun connection tube 24, all the oil gun connection tubes 24 are connected to each other through a second metal hose, the inner oil gun tube 22 is connected to an oil gun connection branch tube 25, all the oil gun connection branch tubes 25 are connected to each other through a third metal hose 26, the lower end of the inner oil gun tube 22 of the inner oil gun is connected to an oil gun connection flange 27, and the lower end of the outer oil gun tube 21 of the inner oil gun is connected to an atomized steam connection flange 28 or a compressed air connection flange.
In an embodiment of the present invention, an oil gun connecting plate 23 is fixedly connected to a lower end of the oil gun outer tube 21, and the oil gun connecting plate 23 is detachably connected to a bottom of the noise reduction cylinder 3.
In a specific embodiment of the present invention, oil nozzle assemblies 20 are disposed at the upper ends of the inner oil gun and the outer oil gun, each oil nozzle assembly 20 includes an oil nozzle 17 and a mixer 18, the lower end of the oil nozzle 17 is hermetically connected to the upper end of a connecting sleeve 19, the lower end of the connecting sleeve 19 is connected to the upper end of an outer tube 21 of the oil gun, the lower end of the mixer 18 is located in the connecting sleeve 19 and connected to the upper end of an inner tube 22 of the oil gun, the middle portion of the mixer 18 is hermetically connected to the upper end of the connecting sleeve 19, the upper end of the mixer 18 is located in the oil nozzle 17, the interior of the lower end of the mixer 18 is communicated with the interior of the lower end of the connecting sleeve 19 through a first through hole, and the interior of the upper end of the mixer 18 is communicated with the interior of the oil nozzle 17 through a.
In one embodiment of the invention, the register 6 is equipped with a FGR flue gas recirculation system.
In order to facilitate understanding of the above-described technical aspects of the present invention, the above-described technical aspects of the present invention will be described in detail below in terms of specific usage.
The low-NOx-emission efficient energy-saving combustor capable of burning heavy oil, oil slurry and fuel gas comprises a fire pan brick 1, a fuel gas gun assembly 2, a silencing barrel 3, a pilot burner 4, an oil gun assembly 5, an air regulator 6 and an FGR flue gas circulating system.
The gas gun component 2 comprises a spray head 11, a gas outer gun 9, a gas inner gun 10, a fixed connecting plate 12, an annular gun barrel 13, a branch connecting pipe 14, a first metal hose 15, a gas joint 16 and other parts. The oil gun component 5 is composed of parts such as an oil spray head component 20, an oil gun outer pipe 21, an oil gun inner pipe 22, an oil gun connecting plate 23, an oil gun connecting pipe 24, an oil gun connecting branch pipe 25, a second metal hose, a third metal hose 26, an oil gun connecting flange 27, an atomized steam connecting flange 28 or a compressed air connecting flange and the like.
The fire basin brick 1 is fixedly arranged in a fire basin brick sleeve by bolts, and the fire basin brick sleeve is connected with the silencing barrel 3 and extends out of the hearth lining body; the structure of the brazier brick 1 is a multi-level stepped tower multi-hole type, namely N round holes 29 are formed in the inclined plane structure of the multi-step tower, and the round holes 29 are arranged around the circumference of the brazier brick 1, so that the inner side surface and the outer side surface of the upper part of the brazier brick 1 and the top part of the upper part of the brazier brick can be communicated with each other, when the gas inner gun 10 is sprayed and combusted, flame is uniformly diffused to each round hole 29, stable and uniform annular cylindrical flame is formed, and the stable and sufficient combustion of; the lateral surface of the cone brick 1 is a multi-step lacebark tower slope structure, namely, the upper part of the lateral surface is inwards contracted into a conical surface, and when the gas outer gun 9 and the outer oil gun jet and burn along the conical surface of the cone brick 1, a large negative pressure area can be formed, so that the smoke of a hearth is carried to form strong smoke backflow, and the generation of NOx is reduced.
The silencing barrel 3 comprises an inner barrel, an outer barrel, a hearth connecting plate, a porous flow distribution plate 7, a partition plate, a fire observation hole 30, an ignition hole 31, a fire detector and the like, wherein the inner barrel and the outer barrel respectively comprise a barrel wall and a bottom plate, aluminum silicate fiber cotton with the thickness of 50-80 mm is clamped between the barrel wall of the inner barrel and the barrel wall of the outer barrel and between the bottom plate of the inner barrel and the bottom plate of the outer barrel, the silencing and low-heat-conduction functions are achieved through the aluminum silicate fiber cotton, the heat insulation performance is excellent, the outward heat dissipation loss of the silencing barrel 3 is reduced to the minimum, and therefore the aims of high efficiency.
A porous flow distribution plate 7 and an air inlet cavity are arranged in the inner cylinder. The air enters the silencing barrel 3 from the air register 6 and enters a combustion air channel through the porous flow distribution plate 7, and the air can be distributed more uniformly through the porous flow distribution plate 7, so that the air and the fuel are mixed fully. The outer rifle 9 of gas, outer oil gun, interior oil gun and changming lamp all adopt the bolt fastening to extend to the fire pan brick 1 on the bottom plate and after passing the inner tube, the furnace connecting plate is used for passing through bolted connection fire pan brick cover, bottom plate and furnace connecting plate all form through the finish machining of digit control machine tool, can guarantee hole and hole axiality, thereby guarantee that the outer rifle 9 of gas, outer oil gun, interior oil gun and changming lamp are perpendicular no deviation, for easy maintenance, every outer rifle 9 of gas, outer oil gun, interior oil gun and changming lamp all can follow and freely extract in the inner tube.
6-N gas outer guns 9 are uniformly distributed and designed outside the fire pan brick 1; correspondingly, 6-N gas inner guns 10 are correspondingly designed in the interior of the fire basin brick 1 one by one; the gas outer gun 9 and the gas inner gun 10 adopt spray heads 11 made of stainless steel pipes with different models and high-temperature resistant materials (Cr 25Ni 20) according to different heat loads, each spray head 11 is drilled with a plurality of rows of spray holes, the size of any row of spray holes is different from that of the other rows of spray holes, the gas outer gun 9 and the gas inner gun 10 are welded together to form a Y shape, the gas outer gun 9 accounts for 80-85 percent of the heat load distribution ratio of the gas gun component 2, the gas inner gun 10 accounts for 15-20 percent of the heat load distribution ratio of the gas gun component 2, the gas outer gun 9 is fixed on a bottom plate by bolts (can be independently and freely drawn out), and extends to the fire basin brick 1 after penetrating through the porous splitter plate 7, the gas outer gun 9 is connected with a branch connection pipe 14 through a first metal hose 15, the branch connection pipe 14 is welded with a ring-shaped gun barrel 13, so that all the gas outer guns 9 and the gas inner guns 10 are communicated through the annular gun barrel 13, and the annular gun barrel 13 is connected with the field gas pipe through the gas joint 16; the fuel gas inner gun 10 accounts for 15% -20% of the total fuel ratio, the air mixed with the fuel gas inner gun is the total amount, the first-stage combustion is carried out under the condition of extremely large excess air amount, the flame temperature is low, the generation amount of NOx is low, and oxygen-enriched dispersed combustion is formed; the gas outer gun 9 accounts for 80 to 85 percent of the total fuel ratio; the orifice is multi-level to be distributed, form multi-level flame like this around fire pan brick 1, thereby furthest utilizes the finite space of furnace, make the gas can carry out the postcombustion in as big space as possible in whole combustion chamber, make the heat load of each part in the furnace even, in the air flue gas mixture after the one-level burning simultaneously, oxygen concentration has reduced, and still roll up the flue gas in the stove into the combustion zone during secondary fuel, multiple factor has reduced flame mean temperature and peak temperature, thereby NOx's emission has been reduced, and effectively avoided carbon monoxide to produce, the burning is reliable and stable.
The oil gun assembly 5 comprises an inner oil gun and an outer oil gun, the inner oil gun and the outer oil gun both comprise an oil gun outer pipe 21 and an oil gun inner pipe 22, the oil spray head assembly 20 consists of a connecting sleeve 19, a mixer 18 and an oil spray head 17, oil enters the mixer 18 from the inner oil gun, high-pressure high-temperature steam or compressed air enters the connecting sleeve 19 from the outer oil gun, then enters the mixer 18 through first through holes on the periphery of the lower part of the mixer 18 to be atomized with the oil and then enters the oil spray head 17, the fully atomized oil forms fine and fine atomized particles to be sprayed to a chamber furnace for combustion, the combustion is full, and the generation of NOx is reduced; the mixer 18 and the oil spray head 17 adopt a labyrinth seal structure, so that the problem of oil leakage is well solved. The number of the inner oil guns is one, the inner oil guns account for 18% -25% of the heat load of the oil gun assembly 5 at the center of the fire basin brick 1, 4-N outer oil guns are uniformly distributed and designed on the periphery of the fire basin brick 1, and the outer oil guns account for 75% -82% of the heat load of the oil gun assembly 5. The inner oil gun and the outer oil gun are fixed on the bottom plate by bolts (can be independently and freely drawn out), penetrate through the porous flow distribution plate 7 and extend to the fire pan brick 1, the oil gun outer pipe 21 is welded with the oil gun connecting pipe 24, all the oil gun connecting pipes 24 are connected with each other through second metal hoses, the oil gun inner pipe 22 is welded with the oil gun connecting branch pipe 25, and all the oil gun connecting branch pipes 25 are connected with each other through third metal hoses 26; an oil gun connecting flange 27 is welded at the lower end of an oil gun inner tube 22 of the inner oil gun, the oil gun connecting flange 27 is used for connecting a field oil delivery pipe, an atomized steam connecting flange 28 or a compressed air connecting flange is welded on an oil gun outer tube 21 of the inner oil gun, and the atomized steam connecting flange 28 or the compressed air connecting flange is used for connecting the field air delivery pipe. The oil lance assembly 20 of the inner oil lance is provided with a stabilizing swirler 8.
The FGR flue gas circulation system comprises a flue, an elbow, a valve, an induced draft fan, a heat preservation layer, an expansion joint, a flange and the like, wherein one end of the flue enters a combustion air channel through the middle of the inner cylinder, the other end of the flue is connected with the elbow, the valve and the expansion joint and then is connected with the induced draft fan, the inlet of the induced draft fan is connected with a smoke pipe of the preheater through the flue, 10-25% of flue gas pumped from the smoke pipe of the preheater enters a combustion air cavity and is mixed with combustion air to form flue gas recirculation, the oxygen content of air is diluted.
The low-NOx-emission efficient energy-saving burner capable of burning heavy oil, slurry oil and gas can be suitable for heating equipment such as petrochemical industry, metallurgical industry, industrial kilns, boilers, incinerators, smelting furnaces and the like, accords with bottom burning type, side burning type and light blue circular vortex flame, is suitable for burning heavy oil, slurry oil and asphalt with high viscosity, and can burn various high-pressure and high-heat-value gas and various low-pressure and low-heat-value gas at the same time: such as: natural gas, liquefied gas, coke oven gas, blast furnace gas, converter gas, methane, catalytic dry gas, self-produced dry gas, various self-produced tail gases and the like, and fuel oil and fuel gas can be used for single combustion and mixed combustion; the oil gun component 5 adopts a high-pressure high-temperature steam or compressed air atomization and labyrinth sealing structure; the combustion principle adopts air graded dispersion, fuel graded dispersion, oxygen enrichment, anaerobic combustion technology, flue gas internal circulation technology and multipoint dispersed combustion technology to reduce the temperature of a high-temperature area in the center of flame, and simultaneously adopts an FGR flue gas circulation system to reduce the generation of NOx and meet the requirement of environmental protection.
In conclusion, by means of the technical scheme, the multi-layer stepped pagoda porous type fire basin brick is suitable for burning heavy oil, oil slurry and various gases, and is provided with a specially designed multi-layer stepped pagoda porous type fire basin brick, a special oil gun component, a dispersed combustion technology, a smart porous flow distribution plate, a special silencing barrel body 3, a specially designed gas inner gun 10, a gas outer gun 9 and an FGR flue gas circulating system; the inner gas gun 10 and the outer gas gun 9 form corresponding injection inside and outside the fire pan brick, so that staged combustion of fuel can be formed, the local concentration in flame of a burner is controlled through reasonable fuel proportion, over-rich and over-lean combustion of the fuel is realized, and low NOx combustion emission is realized.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The low NOx emission efficient energy-saving combustor capable of burning heavy oil, oil slurry and gas comprises a fire pan brick (1), a combustion air passage which penetrates through the fire pan brick (1) from top to bottom is formed in the center of the fire pan brick, a silencing cylinder (3) is fixedly connected to the bottom of the fire pan brick (1), the interior of the silencing cylinder (3) is communicated with the combustion air passage, an air regulator (6) is arranged on the lower portion of the silencing cylinder (3), the low NOx emission efficient energy-saving combustor is characterized in that the bottom of the silencing cylinder (3) is detachably connected with the lower end of an oil gun assembly (5) and the lower end of a gas gun assembly (2), the oil gun assembly (5) comprises at least one inner oil gun and a plurality of outer oil guns, the gas gun assembly (2) comprises a plurality of gas outer guns (9) and inner gas guns (10) which correspond to the gas outer guns (9) one by one, the upper end of interior oil gun and the upper end of rifle (10) all stretches into in the gas in the combustion-supporting air passageway, the upper end of outer oil gun and the upper end of rifle (9) are all around outside fire basin brick (1), the outside upper portion of fire basin brick (1) inwards contracts into the conical surface, the conical surface combustion-supporting air passageway and the top of fire basin brick (1) all communicates each other through a plurality of round holes (29).
2. The low-NOx emission high-efficiency energy-saving burner capable of burning heavy oil, slurry oil and gas according to claim 1, wherein the fire pan brick (1) is fixedly connected in a fire pan brick sleeve, and the bottom of the fire pan brick sleeve is fixedly connected with the top of the silencing cylinder (3).
3. The low-NOx-emission high-efficiency energy-saving burner capable of burning heavy oil, slurry oil and gas as claimed in claim 1, wherein the silencing cylinder (3) comprises an inner cylinder and an outer cylinder, aluminum silicate fiber cotton is filled between the inner cylinder and the outer cylinder, a porous splitter plate (7) is fixedly arranged inside the inner cylinder, and the oil gun assembly (5) and the gas gun assembly (2) both penetrate through the porous splitter plate (7).
4. The low-NOx-emission high-efficiency energy-saving burner capable of burning heavy oil, slurry oil and gas as claimed in claim 1, wherein the top of the silencing cylinder (3) is opened with a fire observation hole (30) and an ignition hole (31).
5. The low NOx emission high efficiency energy saving burner capable of burning heavy oil, slurry oil and gas according to claim 1, wherein the bottom of the noise reduction cylinder (3) is detachably connected with the lower end of the pilot lamp (4), and the upper end of the pilot lamp (4) is protruded into the combustion air passage.
6. The low NOx emission high efficiency energy saving burner capable of burning heavy oil, slurry oil and gas according to claim 1, it is characterized in that the lower end of the gas inner gun (10) is fixedly connected with the middle part of the corresponding gas outer gun (9) and the two are communicated with each other, the upper ends of the gas inner gun (10) and the gas outer gun (9) are both provided with a spray head (11), a plurality of rows of spray holes are formed in the spray head (11), the lower end of the gas outer gun (9) penetrates through the bottom of the silencing cylinder body (3) and is connected with branch pipes (14) through first metal hoses (15), all the branch pipes (14) are communicated with each other through annular gun tubes (13), a gas joint (16) is arranged on the annular gun barrel (13), the lower end of the gas outer gun (9) is fixedly connected with a fixed connecting plate (12), the bottom of the silencing cylinder (3) is detachably connected with the fixed connecting plate (12).
7. The low-NOx emission efficient energy-saving burner capable of burning heavy oil, slurry oil and gas according to claim 1, wherein the inner oil gun and the outer oil gun each comprise an outer oil gun pipe (21) and an inner oil gun pipe (22), the outer oil gun pipe (21) is connected with oil gun connecting pipes (24), all the oil gun connecting pipes (24) are communicated with each other through second metal hoses, the inner oil gun pipe (22) is connected with an oil gun connecting branch pipe (25), all the oil gun connecting branch pipes (25) are communicated with each other through third metal hoses (26), the lower end of the inner oil gun pipe (22) of the inner oil gun is connected with an oil gun connecting flange (27), and the lower end of the outer oil gun pipe (21) of the inner oil gun is connected with an atomized steam connecting flange (28) or a compressed air connecting flange.
8. The low-NOx emission high-efficiency energy-saving burner capable of burning heavy oil, slurry oil and gas according to claim 7, wherein an oil gun connecting plate (23) is fixedly connected to the lower end of the oil gun outer tube (21), and the bottom of the silencing cylinder (3) is detachably connected to the oil gun connecting plate (23).
9. The low-NOx-emission high-efficiency energy-saving burner capable of burning heavy oil, slurry oil and gas according to claim 7, wherein an oil spray head assembly (20) is arranged at each of the upper end of the inner oil gun and the upper end of the outer oil gun, the oil spray head assembly (20) comprises an oil spray head (17) and a mixer (18), the lower end of the oil spray head (17) is hermetically connected with the upper end of a connecting sleeve (19), the lower end of the connecting sleeve (19) is connected with the upper end of the outer oil gun pipe (21), the lower end of the mixer (18) is positioned in the connecting sleeve (19) and connected with the upper end of the inner oil gun pipe (22), the middle part of the mixer (18) is hermetically connected with the upper end of the connecting sleeve (19), the upper end of the mixer (18) is positioned in the oil spray head (17), the inner part of the lower end of the mixer (18) is communicated with the inner part of the lower end of the connecting sleeve (19) through a, the inner part of the upper end of the mixer (18) is communicated with the inner part of the oil spray head (17) through a second through hole.
10. The low NOx emission high efficiency energy saving burner capable of burning heavy oil, slurry oil and gas according to claim 1, characterized in that the air register (6) is equipped with a FGR flue gas recirculation system.
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| CN202010259570.8A CN111520721A (en) | 2020-04-03 | 2020-04-03 | Low-NOx-emission efficient energy-saving combustor capable of burning heavy oil, oil slurry and fuel gas |
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| CN202010259570.8A CN111520721A (en) | 2020-04-03 | 2020-04-03 | Low-NOx-emission efficient energy-saving combustor capable of burning heavy oil, oil slurry and fuel gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113108277A (en) * | 2021-03-25 | 2021-07-13 | 岳阳远东节能设备有限公司 | Ultralow NO of medium and small boilerxCO discharging gas burner |
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Application publication date: 20200811 |