CN209909904U - Gas burner for flat fan-shaped flame ultra-low NOx emission heavy-load cracking furnace - Google Patents
Gas burner for flat fan-shaped flame ultra-low NOx emission heavy-load cracking furnace Download PDFInfo
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- CN209909904U CN209909904U CN201920297130.4U CN201920297130U CN209909904U CN 209909904 U CN209909904 U CN 209909904U CN 201920297130 U CN201920297130 U CN 201920297130U CN 209909904 U CN209909904 U CN 209909904U
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- 238000005336 cracking Methods 0.000 title claims description 17
- 239000011449 brick Substances 0.000 claims abstract description 71
- 238000000197 pyrolysis Methods 0.000 claims abstract 6
- 239000007789 gas Substances 0.000 claims description 44
- 239000007921 spray Substances 0.000 claims description 40
- 238000002485 combustion reaction Methods 0.000 claims description 34
- 239000000446 fuel Substances 0.000 claims description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 19
- 229910052760 oxygen Inorganic materials 0.000 claims description 19
- 239000001301 oxygen Substances 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- 230000007774 longterm Effects 0.000 claims 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 8
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 4
- 230000005855 radiation Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 9
- 239000002737 fuel gas Substances 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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Abstract
The utility model discloses a flat fan-shaped flame ultralow NOx discharges gas burner for heavy load pyrolysis furnace, including fire pan brick subassembly, barrel, T type rifle subassembly, 2 ~ 6 outer rifle subassemblies. The fire pan brick component comprises an upper fire pan brick and a lower fire pan brick. The middle part of the lower fire basin brick is provided with a lower air flow channel which is a straight flow channel with a constant cross section area. The middle part of the upper fire basin brick is provided with an upper air flow channel, two side surfaces of the upper air flow channel incline outwards, and the front surface and the back surface of the upper air flow channel are both wavy surfaces. The utility model discloses T type rifle subassembly spun flame and outer rifle subassembly's macropore spun flame converge into a flat fan-shaped flame, and furthest utilizes the furnace space, makes the gas can burn in as big a space as possible in whole radiation chamber for the inside heat distribution of furnace is even, and the boiler tube is heated evenly, has reduced flame mean temperature and peak temperature simultaneously, thereby reduces NOx's emission, and has effectively avoided carbon monoxide to produce, and the burning is reliable and stable.
Description
Technical Field
The invention belongs to the field of petrochemical industry burners, and particularly relates to a gas burner which is used for a large-load cracking furnace with ultralow NOx emission of flat fan-shaped flame, meets the requirements of a bottom-burning type and blue flat fan-shaped vortex flame, and is used for a petrochemical industry ethylene cracking furnace device, wherein the fuel is natural gas, catalytic dry gas, self-produced dry gas and the like.
Background
The burner is an important component of the ethylene cracking furnace, the heat energy required by the cracking furnace is obtained from the fuel in the burner, the type, the performance and the configuration of the burner can influence the performance of the cracking furnace, and the quality of the burner is directly related to whether the cracking furnace can run safely and stably for a long period.
In recent years, with the increase in the size of cracking furnaces and the increase in environmental requirements, higher requirements have been made on the design of cracking furnace burners, such as flame length, flame shape, distribution of heat flux in the furnace, NOx emission, and the like.
Disclosure of Invention
The invention aims to solve the technical problems that the heat distribution in the hearth is uneven, the average temperature and peak temperature of flame are higher, the NOx emission is higher and the like in the prior art, and provides a gas burner for a flat fan-shaped flame ultra-low NOx emission high-load cracking furnace, which adopts air classification, fuel classification, oxygen enrichment, anaerobic combustion technology, flue gas internal circulation technology and multipoint dispersive combustion technology to reduce the temperature of a high-temperature area in the center of the flame, form a flat fan-shaped long flame, automatically control the ratio of air and fuel gas, reduce the oxygen content in the hearth, facilitate the uniform distribution of heat in the cracking furnace and realize high-load combustion and ultra-low NOx emission.
In order to solve the technical problems, the invention adopts the following technical scheme:
a gas burner for a flat fan-shaped flame ultra-low NOx emission heavy-load cracking furnace is arranged in a heating furnace and comprises a fire pan brick assembly, a cylinder, a T-shaped gun assembly and 2-6 outer gun assemblies. The barrel is arranged at the bottom of the fire pan brick component and communicated with the interior of the fire pan brick component. The back of the cylinder body is provided with an air adjusting butterfly valve component communicated with the inside of the cylinder body. Each outer gun assembly is uniformly distributed on the air bag pipe and communicated with the air bag pipe. Two ends of the air bag pipe are respectively provided with a plug. The gas bag pipe is communicated with the external gun feeding gas pipe.
The fire pan brick component comprises an upper fire pan brick and a lower fire pan brick. The bottom of the upper fire basin brick is provided with a bulge. The top of the lower fire basin brick is provided with a groove. The upper fire basin brick and the lower fire basin brick are connected in a matched mode through the bulges and the grooves. The middle part of the lower fire basin brick is provided with a lower air flow channel. The lower air flow channel is a straight flow channel with a constant cross-sectional area. Be equipped with 2 ~ 6 first outer gun holes on the lower brazier brick.
An upper air flow channel is arranged in the middle of the upper fire basin brick. The two side surfaces of the upper air flow channel incline outwards. The front and the back of the upper air flow channel are both wavy surfaces, and the front of the upper air flow channel is inclined inwards. The front surface outside the upper fire basin brick is provided with at least two layers of steps which incline to the inner side of the upper fire basin brick. Each step is composed of an inclined plane. The upper part of the step is provided with at least one group of combustion holes which are uniformly distributed and penetrate through the wall of the upper fire basin brick. One end of each T-shaped gun assembly penetrates through the bottom of the cylinder body and sequentially penetrates through the inside of the cylinder body and the lower air flow channel to extend into the upper air flow channel, and the height of the top of each T-shaped gun assembly is lower than that of the combustion hole.
And 2-6 second outer gun holes corresponding to the first outer gun holes are uniformly distributed at the lower part of the step. The one end that the gas bag pipe was kept away from to every outer rifle subassembly all runs through the barrel bottom and passes barrel inside, the outer rifle hole of first outer rifle hole and second in proper order and stretch out outside the outer rifle hole of second. An outer gun assembly corresponds to a first outer gun hole and a second outer gun hole and the top height of the outer gun assembly is lower than the height of the top of the combustion hole.
The T-shaped gun assembly comprises a T-shaped gun spray head and a T-shaped gun barrel. The T-shaped gun nozzle is cylindrical with two closed ends. The T-shaped gun nozzle is transversely and vertically arranged at the top of the T-shaped gun barrel. The end of the T-shaped gun barrel, which is far away from the T-shaped gun nozzle, is communicated with a T-shaped gun feeding gas pipe. A plurality of T-shaped gun spray holes with different sizes and different angles are uniformly distributed on the T-shaped gun spray head, and the direction of each T-shaped gun spray hole is inclined upwards.
Each of the outer gun assemblies includes an outer gun spray head and an outer gun barrel. The outer gun nozzle is arranged at the top of the outer gun barrel. The outer gun nozzle is provided with a plurality of big holes and a plurality of small holes, and the angle directions of the big holes and the small holes are corresponding to the inclined planes of the steps.
One end of the changming lamp component penetrates through the bottom of the cylinder body and sequentially penetrates through the inside of the cylinder body and the lower air flow channel to extend into the upper air flow channel. The height of the top of the incandescent lamp assembly is lower than that of the top of the T-shaped gun nozzle. The bottom of the cylinder body is provided with an ignition hole and a fire observation hole. Two branches of the three-way component are respectively communicated with the outer gun feeding gas pipe and the T-shaped gun feeding gas pipe.
In one embodiment, the gas burner for the flat fan flame ultra-low NOx emission heavy-duty cracking furnace further comprises an electric actuator, a field control cabinet and two electric regulating solenoid valves. The electric actuating mechanism is arranged on an air adjusting baffle of the air adjusting butterfly valve component. An electric regulating electromagnetic valve is arranged on the outer gun feeding gas pipe, and the other electric regulating electromagnetic valve is arranged on the T-shaped gun feeding gas pipe. A hearth oxygen content sensor and a hearth temperature sensor are arranged in a hearth of the heating furnace. The field control cabinet is respectively connected with the electric actuating mechanism, each electric adjusting electromagnetic valve, the hearth oxygen content sensor and the hearth temperature sensor. The air-fuel ratio in the combustion chamber is automatically controlled. The on-site automatic control cabinet is also connected with the permanent lighting assembly.
In one embodiment, the diameters of the large hole, the small hole and the T-shaped gun spray hole are designed so that the fuel ratio of the large hole and the small hole on the outer gun assembly is 75-80%, and the fuel ratio of the T-shaped gun spray hole on the T-shaped gun assembly is 20-25%.
In one embodiment, the incandescent lamp assembly is an automatic electronic ignition-ion fire detection integrated incandescent lamp assembly.
In one embodiment, the cylinder comprises a noise reduction inner cylinder, an aluminum silicate fiber cotton layer and an outer cylinder which are sequentially arranged from inside to outside. The noise reduction inner cylinder is a porous metal net.
In one embodiment, the T-shaped gun assembly further comprises a T-shaped gun fixing plate, a T-shaped gun fixing sleeve, a T-shaped gun gasket and a T-shaped gun joint. The T-shaped gun barrel is arranged at the bottom of the barrel body through a T-shaped gun fixing plate, a T-shaped gun fixing sleeve and a T-shaped gun gasket. The end of the T-shaped gun barrel, which is far away from the T-shaped gun nozzle, is connected with a T-shaped gun feeding gas pipe through a T-shaped gun joint.
In one embodiment, each outer gun assembly further comprises a locking cap, a sealing joint, an outer gun fixing plate, an outer gun fixing sleeve and an outer gun gasket. The outer gun nozzle is communicated with the outer gun barrel through a locking cap and a sealing joint. The outer gun barrel is arranged at the bottom of the barrel body through an outer gun fixing plate, an outer gun fixing sleeve and an outer gun gasket.
Advantages and advantageous effects of the invention
1. The fire pan brick component is designed into an upper fire pan brick and a lower fire pan brick, and the upper fire pan brick and the lower fire pan brick can be automatically aligned into a whole through the special design of the protrusion and the groove during installation. The lower air flow channel is a straight flow channel with a constant cross-sectional area, two side surfaces of the upper air flow channel incline outwards to form an air expansion flow channel, and the front surface and the back surface of the upper air flow channel are both wavy surfaces, so that flame can form flat fan-shaped flame and the fuel gas and air can be fully mixed. The front surface outside the upper fire basin brick is provided with at least two layers of steps inclined towards the inner side of the upper fire basin brick, and each layer of step consists of an inclined surface, so that part of fuel gas is favorably stably and dispersedly combusted along the inclined surface of the step. The upper part of the step is provided with at least one group of combustion holes which are uniformly distributed and penetrate through the wall of the upper fire basin brick, the design is favorable for uniform and stable combustion of the invention, and the flame combusted by the T-shaped gun component is transmitted to the outside of the upper fire basin brick through the combustion holes so as to stably ignite the outer gun component and inhibit NOx emission.
2. The invention is provided with 2-6 outer gun components, the outer gun nozzle is provided with a plurality of large holes and a plurality of small holes, the angle directions of the large holes and the small holes correspond to the inclined planes forming the steps, the fuel ratio of the outer gun components is 75-80%, thus the inclined planes of the steps on the upper fire basin brick form multilayer upward fan-shaped flames, thereby utilizing the space of a hearth to the maximum extent, enabling gas to be combusted in the space as large as possible of the whole combustion chamber, enabling the heat load of each part in the hearth to be uniform, reducing the average temperature and the peak temperature of the flames, reducing the emission of NOx, effectively avoiding the generation of carbon monoxide, and having stable and reliable combustion. The flame sprayed from a plurality of small holes beside the big hole forms a flame ring, which can well prevent big fire from getting out of fire.
3. The T-shaped gun spray nozzle is transversely and vertically arranged at the top of a T-shaped gun barrel, a plurality of T-shaped gun spray holes with different sizes and different angles are uniformly distributed on the T-shaped gun spray nozzle, the direction of each T-shaped gun spray hole is inclined upwards, and the fuel ratio of the T-shaped gun component is 20-25%; this forms oxygen-rich dispersed combustion, thereby reducing the production of NOx.
4. The invention is provided with an electronic actuating mechanism, a field control cabinet and two electric adjusting electromagnetic valves, wherein a hearth oxygen content sensor and a hearth temperature sensor are arranged in a hearth of the heating furnace, and the air-fuel ratio is automatically controlled through the hearth oxygen content and the hearth temperature, so that the effects of energy saving and environmental protection are achieved.
5. The invention adopts air classification, fuel classification, oxygen enrichment, anaerobic combustion technology, flue gas internal circulation technology and multipoint dispersive combustion technology.
6. The invention adopts the automatic electronic ignition-ion fire detection integrated pilot burner, the field operation fully adopts automatic control, and the cylinder adopts a noise elimination structure and a low heat conduction design, so the heat insulation performance is excellent, the outward heat dissipation loss of the cylinder is reduced to the minimum, and the purposes of high efficiency, energy saving and low NO are achievedXPollution discharge and low noise.
Drawings
Fig. 1 is a front sectional view of the present invention.
Fig. 2 is a right sectional view of the present invention.
Fig. 3 is a top view of the present invention.
Fig. 4 is a side cross-sectional view of a lower firebrick in accordance with the present invention.
FIG. 5 is a top view of the lower firebrick of the present invention.
Fig. 6 is a side sectional view of the upper firebrick of the present invention.
Fig. 7 is a front sectional view of the upper firebrick of the present invention.
Fig. 8 is a top view of the upper firebrick of the present invention.
FIG. 9 is a schematic view of the construction of the outer gun assembly and the air bag tube of the present invention.
Fig. 10 is a schematic view of the construction of the T-shaped gun assembly of the present invention.
Detailed Description
In order to facilitate an understanding of the invention, a full description thereof will be given below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
Referring to fig. 1 to 10, a gas burner for a flat fan flame ultra-low NOx emission heavy duty cracking furnace is provided in a heating furnace, and includes a firebox brick assembly 1, a cylinder 2, a T-shaped lance assembly 3, and 4 outer lance assemblies 4.
As shown in fig. 1 and 2, the cylinder 2 is disposed at the bottom of the firebox tile assembly 1 and communicates with the interior of the firebox tile assembly 1. The back of the cylinder 2 is provided with an air adjusting butterfly valve component 5 communicated with the inside of the cylinder 2. As shown in fig. 9, each outer gun assembly 4 is uniformly distributed on the air bag tube 6 and is communicated with the air bag tube 6. Two ends of the air bag pipe 6 are respectively provided with a plug 7. The gas bag pipe 6 is communicated with an outer gun feeding gas pipe 8.
As shown in fig. 1, 2, 4 to 8, the firebox tile assembly 1 comprises an upper firebox tile 101 and a lower firebox tile 102. The bottom of the upper fire basin brick 101 is provided with a bulge 103. The top of the lower firebrick 101 is provided with a groove 104. The upper and lower fire pan bricks 101 and 102 are connected by the protrusion 103 and the groove 104. The lower air flow passage 105 is provided at the middle portion of the lower firebrick 102. The lower air flow path 105 is a straight flow path having a constant cross-sectional area. The lower firebrick 102 is provided with 4 first outer gun holes 106.
Specifically, an upper air flow channel 107 is arranged in the middle of the upper fire basin brick 101. Both side surfaces of the upper air flow passage 107 are inclined outward. Both the front and back surfaces of the upper air flow channel 107 are wavy surfaces and the front surface of the upper air flow channel 107 is also inclined inward. The front surface outside the upper fire basin brick 101 is provided with at least two layers of steps 108 which incline towards the inner side of the upper fire basin brick 101. Each step 108 is comprised of a sloped surface. The upper part of the step 108 is provided with a group of combustion holes 109 which are evenly distributed and penetrate through the wall of the upper fire basin brick 101. One end of each T-shaped gun assembly 3 penetrates through the bottom of the barrel 2 and sequentially penetrates through the interior of the barrel 2 and the lower air flow channel 105 to extend into the upper air flow channel 107, and the top of each T-shaped gun assembly 3 is lower than the height of the combustion hole 109.
Specifically, the lower portion of the step 108 is uniformly provided with 4 second outer gun holes 110 corresponding to the first outer gun holes 106. The end of each outer gun assembly 4 far from the air bag pipe 6 penetrates through the bottom of the cylinder body 2 and sequentially penetrates through the inside of the cylinder body 2, the first outer gun hole 106 and the second outer gun hole 110 to extend out of the second outer gun hole 110. One outer gun assembly 4 corresponds to one first outer gun hole 106 and one second outer gun hole 110 and the top height of the outer gun assembly 4 is lower than the height of the top of the combustion hole 109.
Referring to fig. 1, 2 and 10, the T-gun assembly 3 includes a T-gun spray head 301 and a T-gun barrel 302. The T-shaped gun head 301 is cylindrical with both ends closed. The T-shaped gun nozzle 301 is transversely and vertically arranged on the top of the T-shaped gun barrel 302. The end of the T-shaped gun barrel 302 remote from the T-shaped gun nozzle 301 is communicated with the T-shaped gun feeding gas pipe 9. A plurality of T-shaped gun spray holes 303 with different sizes and different angles are uniformly distributed on the T-shaped gun spray head 301, and the direction of each T-shaped gun spray hole 303 is inclined upwards.
As shown in fig. 9, each outer gun assembly 4 includes an outer gun spray head 401 and an outer gun barrel 402. An outer gun spray head 401 is disposed on top of the outer gun barrel 402. The outer gun nozzle 401 is provided with a plurality of large holes and a plurality of small holes, and the angle directions of the large holes and the small holes correspond to the inclined planes of the step 108.
As shown in fig. 1 to 3, one end of the long bright lamp assembly 10 penetrates the bottom of the cylinder 2 to sequentially penetrate the inside of the cylinder 2 and the lower air flow passage 105 to extend into the upper air flow passage 107. The ceiling height of the pilot light assembly 10 is lower than the ceiling height of the T-gun nozzle 301. The bottom of the cylinder body 2 is provided with an ignition hole 11 and a fire observation hole 12. Two branches of the three-way component 13 are respectively communicated with the outer gun feeding gas pipe 8 and the T-shaped gun feeding gas pipe 9.
The invention also comprises an electric actuating mechanism 14, a field control cabinet 15 and two electric regulating electromagnetic valves. The electric actuator 14 is arranged on the air adjusting baffle of the air adjusting butterfly valve component 5. An electric regulating solenoid valve is arranged on the outer gun feeding gas pipe 8, and the other electric regulating solenoid valve is arranged on the T-shaped gun feeding gas pipe 9. A hearth oxygen content sensor and a hearth temperature sensor are arranged in a hearth of the heating furnace. The field control cabinet 15 is respectively connected with the electric actuating mechanism 14, each electric adjusting electromagnetic valve, the hearth oxygen content sensor and the hearth temperature sensor, and the air-fuel ratio in the combustion chamber is automatically controlled through the hearth oxygen content and the hearth temperature. The field automation control cabinet 15 is also connected to the chandelier assembly 10.
The fuel ratio of the large holes and the small holes on the outer gun component 4 is 75% -80% and the fuel ratio of the T-shaped gun spray holes 303 on the T-shaped gun component 3 is 20% -25% by designing the diameters of the large holes, the small holes and the T-shaped gun spray holes 303.
Specifically, the pilot burner assembly 10 is an automatic electronic ignition-ion fire detection integrated pilot burner assembly.
The cylinder body 2 comprises a noise reduction inner cylinder 201, an aluminum silicate fiber cotton layer 202 and an outer cylinder 203 which are arranged in sequence from inside to outside. The noise reduction inner cylinder 201 is a porous metal mesh.
As shown in fig. 1, 2 and 10, the T-shaped gun assembly 3 further includes a T-shaped gun fixing plate 304, a T-shaped gun fixing sleeve 305, a T-shaped gun gasket 306 and a T-shaped gun joint 307. The T-shaped gun barrel 302 is mounted at the bottom of the barrel 2 through a T-shaped gun fixing plate 304, a T-shaped gun fixing sleeve 305 and a T-shaped gun gasket 306. The end of the T-gun barrel 302 remote from the T-gun nozzle 301 is connected to the T-gun feed gas tube 9 by a T-gun connector 307.
Specifically, as shown in fig. 1, 2 and 9, each outer gun assembly 4 further includes a locking cap 403, a sealing joint 404, an outer gun fixing plate 405, an outer gun fixing sleeve 406, and an outer gun gasket 407. The outer gun spray head 401 communicates with the outer gun barrel 402 through a locking cap 403 and a sealing joint 404. The outer gun barrel 402 is mounted on the bottom of the barrel 2 through an outer gun fixing plate 405, an outer gun fixing sleeve 406 and an outer gun gasket 407.
The working principle and the working process of the invention are as follows:
the invention discloses a fire pan brick component 1, which is characterized in that an upper fire pan brick 101 and a lower fire pan brick 102 are designed, air sequentially passes through an air adjusting butterfly valve component 5, the interior of a barrel 2, a lower air flow channel 105 and an upper air flow channel 107 to enter a hearth, and because two side surfaces of the upper air flow channel 107 are outwards inclined to form an air expansion flow channel, the front surface and the back surface of the upper air flow channel 107 are both wavy surfaces, and the front surface of the upper air flow channel 107 is also inwards inclined, the air entering the hearth forms rotational flow diffusion air; a plurality of T-shaped gun spray holes 303 with different sizes and different angles are uniformly distributed on the T-shaped gun spray head 301, the direction of each T-shaped gun spray hole 303 is inclined upwards, and a group of fuel gas is subjected to multi-level grading by the T-shaped gun assembly 3 and then is fully mixed with the air in the fire basin brick assembly 1 to form oxygen-enriched dispersed combustion; the outer gun nozzles 401 are provided with a plurality of large holes and a plurality of small holes, the angle directions of the large holes and the small holes correspond to the inclined planes of the steps 108, and the other group of fuel gas is sprayed out from the large holes of each outer gun nozzle 401 and is mixed with air and backflow flue gas along the inclined planes of the steps 108 on the fire pan brick component 1 to form multilayer upward fan-shaped flames; the flame sprayed from a plurality of small holes beside the large hole forms a flame ring, so that the large fire can be well prevented from being extinguished, the design of the combustion holes is favorable for uniformly and stably combusting the flame, the flame combusted by the T-shaped gun component 3 is transmitted to the outside of the upper fire basin brick 101 through the combustion holes 109, so that the outer gun component 4 is stably ignited, and the emission of NOx is inhibited, the flame sprayed by the T-shaped gun component 3 and the flame sprayed by the large hole of the outer gun component 4 are converged into a flat fan-shaped flame, the space of the hearth is utilized to the maximum extent, so that the gas can be combusted in the largest possible space of the whole radiation chamber, the heat distribution in the hearth is uniform, the furnace tube is uniformly heated, the average temperature and the peak temperature of the flame are reduced, the emission of NOx is reduced, the generation of carbon monoxide is effectively.
The field control cabinet 15 processes the data transmitted from the hearth temperature sensor and the hearth oxygen content sensor to control the electronic actuating mechanism 14 and the two electric adjusting electromagnetic valves, thereby achieving the purpose of controlling the air-fuel ratio in the combustor.
The invention has the advantages and beneficial effects that:
1. the brazier brick component 1 of the invention is designed into an upper brazier brick 101 and a lower brazier brick 102, and the upper brazier brick 101 and the lower brazier brick 102 can be automatically aligned into a whole by the special design of the protrusion 103 and the groove 104 during installation. The lower air flow channel 105 is a straight flow channel with a constant cross-sectional area, two side surfaces of the upper air flow channel 107 are inclined outwards to form an air expanding flow channel, and the front surface and the back surface of the upper air flow channel 107 are both wavy surfaces, so that flame can form flat fan-shaped flame and the gas and air can be fully mixed. The front surface outside the upper fire basin brick 101 is provided with at least two layers of steps 108 inclined towards the inner side of the upper fire basin brick 101, and each layer of step 108 is composed of inclined surfaces, so that part of fuel gas is stably and dispersedly combusted along the inclined surfaces of the steps 108. The upper part of the step 108 is provided with at least one group of combustion holes 109 which are uniformly distributed and penetrate through the wall of the upper fire basin brick 101, the design is favorable for uniform and stable combustion of the invention, and the flame combusted by the T-shaped gun assembly 3 is transmitted to the outside of the upper fire basin brick 101 through the combustion holes 109 so as to stably ignite the outer gun assembly 4 and inhibit NOx emission.
2. The invention is provided with 2-6 outer gun components 4, the outer gun nozzle 401 is provided with a plurality of large holes and a plurality of small holes, the angle directions of the large holes and the small holes are all corresponding to the inclined planes forming the steps 108, the fuel ratio of the outer gun components 4 is 75-80%, thus the inclined planes of the steps 108 on the upper fire basin brick 101 form multilayer upward fan-shaped flames, thereby utilizing the space of a hearth to the maximum extent, enabling gas to be combusted in the space as large as possible of the whole combustion chamber, enabling the heat load of each part in the hearth to be uniform, reducing the average temperature and the peak temperature of the flames, reducing the emission of NOx, effectively avoiding the generation of carbon monoxide, and having stable and reliable combustion. The flame sprayed from a plurality of small holes beside the big hole forms a flame ring, which can well prevent big fire from getting out of fire.
3. The T-shaped gun spray nozzle is provided with a T-shaped gun component 3, a T-shaped gun spray nozzle 301 is transversely and vertically arranged at the top of a T-shaped gun barrel 302, a plurality of T-shaped gun spray holes 303 with different sizes and different angles are uniformly distributed on the T-shaped gun spray nozzle 301, the direction of each T-shaped gun spray hole 303 is inclined upwards, and the fuel ratio of the T-shaped gun component 3 is 20-25%; this forms oxygen-rich dispersed combustion, thereby reducing the production of NOx.
4. The invention is provided with an electronic actuating mechanism 14, a field control cabinet 15 and two electric adjusting electromagnetic valves, wherein a hearth oxygen content sensor and a hearth temperature sensor are arranged in a hearth of the heating furnace, and the air-fuel ratio is automatically controlled through the hearth oxygen content and the hearth temperature, thereby achieving the effects of energy saving and environmental protection.
5. The invention adopts air classification, fuel classification, oxygen enrichment, anaerobic combustion technology, flue gas internal circulation technology and multipoint dispersive combustion technology.
6. The invention adopts the integrated pilot burner of automatic electronic ignition-ion fire detection, the field operation adopts the automatic control totally, and the cylinder adopts the noise elimination structure and the low heat conduction design, the heat insulation performance is excellent (this function is because the cylinder 2 is composed of the outer cylinder 203 and the noise reduction inner cylinder 201, the middle is the ceramic fiber backing plate, the material is the aluminum silicate fiber cotton, the noise reduction inner cylinder 201 is the porous metal net), the heat dissipation loss of the cylinder 2 to the outside is reduced to the lowest, thus achieving the purposes of high efficiency, energy saving and low NOXWith low noise and polluting emissionsThe purpose of environmental protection.
The above-mentioned embodiments only express one embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A gas burner for flat fan-shaped flame cracking furnace with ultralow NOx emission and large load is arranged in a heating furnace and is characterized in that
Characterized in that the device comprises a fire pan brick component, a barrel, a T-shaped gun component and 2-6 outer gun components, wherein the barrel is arranged at the bottom of the fire pan brick component and is communicated with the interior of the fire pan brick component, the back surface of the barrel is provided with an air adjusting butterfly valve component communicated with the interior of the barrel, each outer gun component is uniformly distributed on an air bag pipe and is communicated with the air bag pipe, two ends of the air bag pipe are respectively provided with a plug, and the air bag pipe is communicated with an outer gun feeding gas pipe;
the fire pan brick component comprises an upper fire pan brick and a lower fire pan brick, wherein a bulge is arranged at the bottom of the upper fire pan brick, a groove is arranged at the top of the lower fire pan brick, the upper fire pan brick and the lower fire pan brick are connected in a matched mode through the bulge and the groove, a lower air flow channel is arranged in the middle of the lower fire pan brick, the lower air flow channel is a straight flow channel with a constant cross section area, 2-6 first outer gun holes are formed in the lower fire pan brick, an upper air flow channel is arranged in the middle of the upper fire pan brick, two side faces of the upper air flow channel incline outwards, the front face and the back face of the upper air flow channel are both wavy surfaces, the front face of the upper air flow channel also inclines inwards, at least two layers of steps inclining towards the inner side of the upper fire pan brick are arranged on the front face outside the upper fire pan brick, each layer of steps are composed of inclined faces, at least one group of combustion holes which are uniformly distributed and penetrate through the wall of the upper fire pan brick are arranged on the upper portion of each T-shaped gun component, one, the height of the top of the T-shaped gun assembly is lower than that of the combustion hole, 2-6 second outer gun holes corresponding to the first outer gun holes are uniformly distributed in the lower portion of the step, one end, far away from the air bag pipe, of each outer gun assembly penetrates through the bottom of the barrel and sequentially penetrates through the interior of the barrel, the first outer gun holes and the second outer gun holes to extend out of the second outer gun holes, one outer gun assembly corresponds to one first outer gun hole and one second outer gun hole, and the height of the top of each outer gun assembly is lower than that of the top of the combustion hole;
the T-shaped gun assembly comprises a T-shaped gun spray head and a T-shaped gun barrel, the T-shaped gun spray head is cylindrical, two ends of the T-shaped gun spray head are sealed, the T-shaped gun spray head is transversely perpendicular to the T-shaped gun barrel and is arranged at the top of the T-shaped gun barrel, the end, far away from the T-shaped gun spray head, of the T-shaped gun barrel is communicated with a T-shaped gun feeding gas pipe, a plurality of T-shaped gun spray holes with different sizes and different angles are uniformly distributed in the T-shaped gun spray head, and the direction of each T-shaped gun spray hole is inclined upwards;
each outer gun assembly comprises an outer gun spray head and an outer gun barrel, the outer gun spray head is arranged at the top of the outer gun barrel, a plurality of large holes and a plurality of small holes are formed in the outer gun spray head, and the angle directions of the large holes and the small holes correspond to the inclined planes forming the steps;
one end of the long bright lamp component penetrates through the bottom of the barrel body and sequentially penetrates through the interior of the barrel body and the lower air flow channel to extend into the upper air flow channel, the top height of the long bright lamp component is lower than that of the T-shaped gun spray head, an ignition hole and a fire observation hole are formed in the bottom of the barrel body, and two branches of the three-way component are respectively communicated with the outer gun feeding gas pipe and the T-shaped gun feeding gas pipe.
2. The gas burner for flat fan flame ultra-low NOx emission heavy duty pyrolysis furnace of claim 1, the gas burner is characterized by further comprising an electric actuating mechanism, a field control cabinet and two electric adjusting electromagnetic valves, wherein the electric actuating mechanism is arranged on an air adjusting baffle of an air adjusting butterfly valve assembly, one electric adjusting electromagnetic valve is arranged on an outer gun feeding gas pipe, the other electric adjusting electromagnetic valve is arranged on a T-shaped gun feeding gas pipe, a hearth oxygen content sensor and a hearth temperature sensor are arranged in a hearth of the heating furnace, the field control cabinet is respectively connected with the electric actuating mechanism, the electric adjusting electromagnetic valves, the hearth oxygen content sensor and the hearth temperature sensor, the air-fuel ratio in a combustion chamber is automatically controlled, and the field automatic control cabinet is further connected with a long-term bright lamp assembly.
3. The gas burner for flat fan flame ultra-low NOx emission heavy duty pyrolysis furnace of claim 1 or 2 wherein the diameters of the large hole, small hole and T-shaped lance orifices are designed such that the fuel ratio of the large hole and small hole on the outer lance assembly is 75% to 80% and the fuel ratio of the T-shaped lance orifices on the T-shaped lance assembly is 20% to 25%.
4. The gas burner for flat fan flame ultra-low NOx emission heavy duty pyrolysis furnaces as claimed in claim 1 wherein said glow lamp assembly is an automatic electronic ignition-ionic fire detection integrated glow lamp assembly.
5. The gas burner for flat fan flame ultra-low NOx emission heavy-duty cracking furnace of claim 1, wherein the cylinder comprises a noise reduction inner cylinder, an alumina silicate fiber cotton layer and an outer cylinder which are arranged in sequence from inside to outside, and the noise reduction inner cylinder is a porous metal mesh.
6. The flat fan flame gas burner for ultra-low NOx emission large load pyrolysis furnaces as claimed in claim 1 wherein the T-gun assembly further comprises a T-gun fixing plate, a T-gun fixing sleeve, a T-gun gasket, and a T-gun joint, wherein the T-gun barrel is mounted at the bottom of the barrel through the T-gun fixing plate, the T-gun fixing sleeve and the T-gun gasket, and the end of the T-gun barrel away from the T-gun nozzle is connected to the T-gun feed gas pipe through the T-gun joint.
7. The flat fan flame gas burner for ultra-low NOx emission large load pyrolysis furnaces as claimed in claim 1 wherein each outer lance assembly further comprises a locking cap, a sealing joint, an outer lance fixing plate, an outer lance fixing sleeve, an outer lance gasket, the outer lance nozzle is in communication with the outer lance tube through the locking cap and the sealing joint, and the outer lance tube is mounted at the bottom of the barrel through the outer lance fixing plate, the outer lance fixing sleeve, the outer lance gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920297130.4U CN209909904U (en) | 2019-03-10 | 2019-03-10 | Gas burner for flat fan-shaped flame ultra-low NOx emission heavy-load cracking furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920297130.4U CN209909904U (en) | 2019-03-10 | 2019-03-10 | Gas burner for flat fan-shaped flame ultra-low NOx emission heavy-load cracking furnace |
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| Publication Number | Publication Date |
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| CN209909904U true CN209909904U (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920297130.4U Withdrawn - After Issue CN209909904U (en) | 2019-03-10 | 2019-03-10 | Gas burner for flat fan-shaped flame ultra-low NOx emission heavy-load cracking furnace |
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| CN (1) | CN209909904U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737408A (en) * | 2019-03-10 | 2019-05-10 | 岳阳钟鼎热工电磁科技有限公司 | The big load pyrolysis furnace gas burner of flat fan flame ultra-low NOx emission |
-
2019
- 2019-03-10 CN CN201920297130.4U patent/CN209909904U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737408A (en) * | 2019-03-10 | 2019-05-10 | 岳阳钟鼎热工电磁科技有限公司 | The big load pyrolysis furnace gas burner of flat fan flame ultra-low NOx emission |
| CN109737408B (en) * | 2019-03-10 | 2023-11-24 | 岳阳钟鼎热工电磁科技有限公司 | Gas burner for flat fan-shaped flame ultralow NOx emission high-load cracking furnace |
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