CN207112806U - A kind of low nitrogen burner - Google Patents
A kind of low nitrogen burner Download PDFInfo
- Publication number
- CN207112806U CN207112806U CN201720901519.6U CN201720901519U CN207112806U CN 207112806 U CN207112806 U CN 207112806U CN 201720901519 U CN201720901519 U CN 201720901519U CN 207112806 U CN207112806 U CN 207112806U
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- CN
- China
- Prior art keywords
- cylinder
- natural gas
- air passage
- central
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 24
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 114
- 238000002485 combustion reaction Methods 0.000 claims abstract description 81
- 239000003345 natural gas Substances 0.000 claims abstract description 58
- 230000002093 peripheral effect Effects 0.000 claims abstract description 42
- 239000003546 flue gas Substances 0.000 claims abstract description 28
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000007921 spray Substances 0.000 claims abstract description 20
- 238000002347 injection Methods 0.000 claims abstract description 19
- 239000007924 injection Substances 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 230000007704 transition Effects 0.000 claims abstract description 12
- 239000003517 fume Substances 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 15
- 239000004047 hole gas Substances 0.000 claims description 2
- 210000000867 larynx Anatomy 0.000 claims 1
- 239000000446 fuel Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000002156 mixing Methods 0.000 description 7
- 206010020843 Hyperthermia Diseases 0.000 description 4
- 230000036031 hyperthermia Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
A kind of low nitrogen burner, it includes cylinder, eddy flow tray, natural gas passage mechanism and combustion air passage mechanism.The wall portion of the aditus laryngis of cylinder opens up circulation port in multiple flue gases.Natural gas passage mechanism includes multiple peripheral conduits, multiple transitional region pipelines and central tube, and combustion air passage mechanism includes center air passage and outer air passage.The natural gas that combustion air from center air passage sprays with central-injection hole is mixed to form central burner region；The natural gas that the spray-hole of part combustion air and transitional region pipeline from outer air passage sprays is mixed to form transition combustion zone；The natural gas that the spray-hole of another part combustion air and peripheral conduits from outer air passage sprays is mixed to form peripheral combustion zone；Partial fume after burning can enter inner barrel via circulation port in flue gas.
Description
Technical field
It the utility model is related to natural gas clean combustion technique field, one kind especially set out carries flue gas inner circulation type, low
NOx combustion device structure.
Background technology
One of NOx is a kind of important component of atmosphere pollution, and an important factor for initiation haze and acid rain.Mesh
It is preceding that the limitation for NOx discharge is also increasingly strict with the continuous improvement of environmental requirement,
Neat gas burner is using natural gas as fuel, can reduce NOx discharge, thus neat gas burner obtained in recent years
To greatly developing.Neat gas burner has the advantages that clean and effective, safe and simple.
Specifically, neat gas burner is to be changed by the way that natural gas and air are carried out into mixing and burning to reach chemical energy
For the purpose of heat energy.Designed by rational burner structure, can be well mixed natural gas and air, ensureing efficiently combustion
On the basis of burning, the generation in area of localized hyperthermia is reduced, so as to suppress the generation of NOx in combustion process, reaches low NOx discharge
Amount.Such as the A of patent CN 105135432, using the structure type of inside and outside two layers of fuel gun, adjustment combustion zone fuel and
The distribution of air, the formation of high-temperature area is reduced, reduce NOx discharge capacity.
The mixing of fuel and air before into combustion zone combustion efficiency is influenceed it is very big, but into combustion zone
Before, the mixing of natural gas and air that fuel gun sprays is all very limited over time and space, and this can cause this region natural
The mixed effect of gas and air is deteriorated, and then concentration, temperature distributing disproportionation are even in combustion zone, increase NOx growing amount.
Therefore, the NOx emission of neat gas burner is still greatly improved space, and also having many reduces pollutant emissions
Technological means has to be developed.There is still a need for more rationally effective ultra-low NOx emission burner structure form effectively drops for design
Low burn is burnt and control pollutant emission.
Utility model content
A main purpose of the present utility model is at least one defect for overcoming above-mentioned prior art, there is provided a kind of low
Nitrogen burner, to solve the problems, such as the mixing effect difference of natural gas and air in existing neat gas burner, to organize to fire
Burn and reduce the generation and discharge of pollutant.
To reach above-mentioned purpose, the utility model provides a kind of low nitrogen burner, and it includes cylinder, eddy flow tray, day
Right gas passage mechanism and combustion air passage mechanism.
One end of cylinder has aditus laryngis, and the wall portion of aditus laryngis opens up circulation port in multiple flue gases.Eddy flow tray include eddy flow inner ring,
Eddy flow outer shroud and swirl vane, eddy flow tray is placed in the middle to be located in cylinder, and coaxial with cylinder, and swirl vane is arranged at eddy flow inner ring
Between eddy flow outer shroud.
Natural gas passage mechanism includes multiple peripheral conduits, multiple transitional region pipelines and central tube, multiple peripheral tubes
Road is set around cylinder, and the spray-hole of peripheral conduits is located at the outside of cylinder, and close to aditus laryngis；Central tube is arranged in eddy flow
Inner ring, central tube include the natural air gun in center, natural gas air chamber and central-injection hole, and natural gas air chamber is located at center natural gas
One end of the close aditus laryngis of rifle, central-injection hole connect via natural gas air chamber with the natural air gun in center；Multiple transitional region pipes
Road is set around central tube, and one end of transitional region pipeline passes through swirl vane.
Combustion air passage mechanism includes center air passage and outer air passage, central tube and transitional region pipe
Region between road is defined as center air passage, and the region between peripheral conduits and transitional region pipeline is defined as outer layer sky
Gas passage.
Wherein, the natural gas that the combustion air from center air passage sprays with central-injection hole is mixed to form center
Combustion zone；Part combustion air from outer air passage mixes with the natural gas that the spray-hole of transitional region pipeline sprays
Form transition combustion zone；The day that the spray-hole of another part combustion air and peripheral conduits from outer air passage sprays
Right gas is mixed to form peripheral combustion zone；Partial fume after burning can enter inner barrel via circulation port in flue gas.
In an embodiment, cylinder includes body, and the wall portion connection of body and aditus laryngis, the wall portion of aditus laryngis is compared to body court
Cylinder inside contracts, and peripheral conduits are arranged in body so that a part for peripheral conduits is located at inner barrel.
In an embodiment, cylinder also includes guide plate, and it is connected to the outer rim of the wall portion of aditus laryngis, and towards the outside of cylinder
Inclined expansion.
In an embodiment, the scope at the angle of inclination of guide plate is 20 ° -45 °.
In an embodiment, natural gas passage mechanism also includes multiple L-shaped branch pipes, and it includes the axial direction being mutually connected vertically
Pipe and radial tubes, tube axial surround the periphery of cylinder, and radial tubes stretch into inner barrel via circulation port in flue gas, and radial tubes
Projection vertically is at least partially disposed in the drop shadow spread of eddy flow tray, and one end for stretching into inner barrel of radial tubes has radially
Spray-hole.
In an embodiment, the periphery for stretching into the radial tubes of cylinder is provided with multiple circumferential spray-holes, its with from intermediate layer
The natural gas that the combustion air of air duct and central-injection hole spray is mixed to form the central burner region.
In an embodiment, the projection of at least one circumferential spray-hole vertically is located in the drop shadow spread of eddy flow tray, its
The natural gas sprayed with the combustion air from center air passage and central-injection hole is mixed to form the central combustion zone
Domain；At least one circumferential spray-hole is located at outer air passage, itself and part combustion air and mistake from outer air passage
The natural gas for crossing the spray-hole ejection of zone duct is mixed to form transition combustion zone.
In an embodiment, L-shaped branch pipe is distributed at equal intervals around cylinder, and identical quantity is provided between adjacent L-shaped branch pipe
Peripheral conduits, the extended lines of the radial tubes of each L-shaped branch pipe passes through the axis of cylinder.
In an embodiment, the number of circulation port is 6-12 in flue gas, and the number of peripheral conduits is 6-24,
In an embodiment, the inner inclination of one end provided with spray-hole of peripheral conduits towards cylinder.
In an embodiment, one end through swirl vane of transitional region pipeline tilts towards inner barrel.
In an embodiment, the angle of swirl vane is 25 ° -60 °, and the quantity of swirl vane is 6-12.
The utility model is compared to the beneficial effect of prior art：Low nitrogen burner of the present utility model passes through
The collective effect of circulation in inside and outside layer natural gas distribution mode and corresponding two layers of combustion air method of salary distribution and flue gas,
Efficient, reliable combustion field is formed in burner downstream, by the way that natural gas is rationally uniformly distributed, using being followed in flue gas
Annular distance, the scope in area of localized hyperthermia is effectively reduced, suppresses NOx generation.
Brief description of the drawings
The following detailed description to preferred embodiment of the present utility model is considered in conjunction with the accompanying drawings, it is of the present utility model each
Kind target, feature and advantage will become apparent.Accompanying drawing is only exemplary diagram of the present utility model, is not necessarily
It is drawn to scale.In the accompanying drawings, same reference represents same or similar part all the time.Wherein：
Fig. 1 is the structural representation of low nitrogen burner of the present utility model.
Fig. 2 is the three-dimensional cutaway view of low nitrogen burner of the present utility model.
Fig. 3 is Fig. 1 partial enlarged drawing, illustrated therein is circulating path in flue gas.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, these embodiments are provided so that this practicality is new
The design of example embodiment more comprehensively and completely, and is comprehensively communicated to those skilled in the art by type.Identical in figure
Reference represents same or similar structure, thus will omit their detailed description.
The term of relativity, such as " relatively low " or " bottom " and " higher " or " top " may be used in embodiment, to retouch
State relativeness of the component for another component of icon.It is appreciated that, if the device upset of icon made thereon
Lower reverse, then the component described in " relatively low " side will be as in the component of " higher " side.In addition, when certain layer in other layers or
Substrate " on " when, it is possible to refer to " direct " on other layers or substrate, or refer to certain layer on other layers or substrate, or refer to other
The other layers of sandwiched between layer or substrate.
The utility model provides a kind of low nitrogen burner, and it can be boiler, or any one passes through burner.Such as
Shown in Fig. 1 to Fig. 3, low nitrogen burner includes cylinder 10, eddy flow tray 20, natural gas passage mechanism and combustion air channel machine
Structure.
One end of cylinder 10 has aditus laryngis 11, and the wall portion 12 of aditus laryngis 11 opens up circulation port 13 in multiple flue gases.Eddy flow tray 20
Including eddy flow inner ring 21, eddy flow outer shroud 22 and swirl vane 23, eddy flow tray 20 is placed in the middle to be located in cylinder 10, and same with cylinder 10
Axle, swirl vane 23 are arranged between eddy flow inner ring 21 and eddy flow outer shroud 22.
Natural gas passage mechanism includes multiple peripheral conduits 31, multiple transitional region pipelines 32 and central tube 33, multiple
Peripheral conduits 31 are set around cylinder 10, and the spray-hole 311 of peripheral conduits 31 is located at the outside of cylinder 10, and close to aditus laryngis
11；Central tube 33 is arranged in eddy flow inner ring 21, central tube 33 include the natural air gun 331 in center, natural gas air chamber 332 and in
Heart spray-hole 333, natural gas air chamber 332 is located at one end of the close aditus laryngis 11 of the natural air gun 331 in center, central-injection hole 333
Connected via the air gun 331 natural with center of natural gas air chamber 332；Multiple transitional region pipelines 32 are set around central tube 33,
And one end of transitional region pipeline 32 passes through swirl vane 23.
Combustion air passage mechanism includes center air passage 41 and outer air passage 42, central tube 33 and transition
Region between zone duct 32 is defined as center air passage 41, the area between peripheral conduits 31 and transitional region pipeline 32
Domain is defined as outer air passage 42.
Wherein, the combustion air from center air passage 41 mixes shape with the natural gas that central-injection hole 333 sprays
Into central burner region；The spray-hole 321 of part combustion air and transitional region pipeline 32 from outer air passage 42 sprays
The natural gas gone out is mixed to form transition combustion zone；Another part combustion air and peripheral conduits from outer air passage 42
The natural gas that 31 spray-hole 311 sprays is mixed to form peripheral combustion zone；Part high-temperature flue gas after burning can be via cigarette
Circulation port 13 enters inside cylinder 10 in gas, is inhaled into combustion air passage mechanism, so as to reduce combustion zone oxygen content, reduces
Partial combustion temperature, and pass through the shape and scope of higher air velocity control burner downstream flame.
In the running of low nitrogen burner, the combustion air into cylinder 10 is divided into two parts, and is entered respectively
Enter center air passage 41 and outer air passage 42.Wherein, into the combustion air of center air passage 41, through overwinding
The effect of flow table 20 forms strong rotational flow gas, the natural gas mixing sprayed with central-injection hole 333, forms stable central burner
Region；The natural gas that the spray-hole 321 of part combustion air and transitional region pipeline 32 into outer air passage 42 sprays
Mutually blending, form the transition combustion zone of centre；The natural gas jet that the spray-hole 311 of outermost peripheral conduits 31 sprays
It is uniformly distributed, and is mixed with another part combustion air from outer air passage 42 in radial directions, forms periphery combustion
Burn region.
Therefore, whole combustion zone is divided into the central burner region of fuel-rich combustion, the transition combustion zone of fuel-lean combustion
Domain and peripheral combustion zone three parts.NOx generation is suppressed by the fuel-rich of part；Transition combustion zone and peripheral combustion zone
Domain is poor fuel pre-mixed gas, and ignition temperature is low, equally plays the effect for reducing NOx emission.
Also, due to opening up circulation port 13 in flue gas at aditus laryngis 11, the pressure outside hole is more than pressure in hole, so as to
Outside flue gas is rolled up in suction cylinder 10, realizes that flue gas enters combustion zone, burning local temperature is reduced, realizes bias combustion.
Using the shape and scope of higher air velocity control burner downstream flame, so as to reduce the effect of NOx emission.
In the present embodiment, cylinder 10 includes body 14, and body 14 is connected with the wall portion 12 of aditus laryngis 11, the wall portion 12 of aditus laryngis 11
Inside contracted compared to body 14 towards cylinder 10, peripheral conduits 31 are arranged in body 14 so that a part for peripheral conduits 31 is located at cylinder
Inside body 10, another part is located at outside cylinder 10.Wherein, one end provided with spray-hole 311 of peripheral conduits 31 is towards cylinder 10
Inner inclination, so as to spray natural gas to cylinder 10, with it is quick with natural gas, uniformly mix.
In the present embodiment, cylinder 10 also includes guide plate 15, and it is connected to the outer rim of the wall portion 12 of aditus laryngis 11, and towards cylinder
The expansion of 10 outer inclination.Wherein, the scope at the angle of inclination of guide plate 15 can be 20 ° -45 °.As shown in figure 3, extend out
Wall portion 12 make it that aditus laryngis 11 is in bell mouth shape, is inhaled after partial fume discharge towards cylinder is involute, a part is via circulation port in flue gas 13
Into the transition combustion zone in cylinder, a part is directed to peripheral conduits 31 by guide plate 15, into peripheral combustion zone.Cause
This, guide plate 15 coordinates to can aid in be formed in flue gas with circulation port 13 in flue gas to be circulated, and effectively reduces area of localized hyperthermia
Scope, suppress NOx generation.
In the present embodiment, natural gas passage mechanism also includes multiple L-shaped branch pipes 34, and it includes the axial direction being mutually connected vertically
Pipe 341 and radial tubes 342, tube axial 341 surround the periphery of cylinder 10, and radial tubes 342 stretch into cylinder via circulation port in flue gas 13
Inside body 10, and the projection vertically of radial tubes 342 is at least partially disposed in the drop shadow spread of eddy flow tray 20, radial tubes 342
The one end stretched into inside cylinder 10 there is radial injection hole 343.
Wherein, the periphery for stretching into the radial tubes 342 of cylinder 10 is provided with multiple circumferential spray-holes 344, its with from intermediate layer
The natural gas that the combustion air of air duct 41 and central-injection hole 333 spray is mixed to form the central burner region.
Wherein, the projection of at least one circumferential spray-hole 344 vertically is in the drop shadow spread of eddy flow tray 20, and it is with coming
The natural gas sprayed from the combustion air of center air passage 41 and central-injection hole 333 is mixed to form the central combustion zone
Domain；At least one circumferential spray-hole 344 is located at outer air passage 42, its with from the combustion-supporting sky in the part of outer air passage 42
The natural gas that the spray-hole 321 of gas and transitional region pipeline 32 sprays is mixed to form transition combustion zone.
Therefore, combustion air is divided into by two-stage, natural qi leel by natural gas passage mechanism and combustion air passage mechanism
For three-level.Natural gas can be injected into center by central tube 33, while the radial injection hole 343 of L-shaped branch pipe 34 can also incite somebody to action
Natural gas injects the top of eddy flow tray 20, one end through swirl vane 23 of transitional region pipeline 32 to be tilted towards cylinder, from
And natural gas is also injected to the top of eddy flow tray 20, three strands of natural gases mix with eddy flow combustion air.Outer layer fuel is emitted directly toward outer
Layer combustion air, ensure at burner outlet VELOCITY DISTRIBUTION rationally, fuel gas and combustion air blending it is uniform, flue gas passes through after burning
By being recycled into combustion zone in flue gas, combustion zone is rationally controlled, so as to ensure the stability of burning and good NOx abatement
Effect.
In the present embodiment, L-shaped branch pipe 34 is distributed at equal intervals around cylinder 10, is provided between adjacent L-shaped branch pipe 34 identical
The peripheral conduits 31 of quantity, the extended line of the radial tubes 342 of each L-shaped branch pipe 34 pass through the axis of cylinder 10.Circulation port in flue gas
13 number is 6-12, and the number of peripheral conduits 31 is 6-24, and a L will be disposed with interval of 5 peripheral conduits 31
Shape branch pipe 34.
In the present embodiment, the angle of swirl vane 23 can be 25 ° -60 °, and the quantity of swirl vane 23 can be 6-12.
In summary, low nitrogen burner of the present utility model passes through inside and outside layer natural gas distribution mode and corresponding
Two layers of combustion air method of salary distribution and flue gas in circulation collective effect, efficient, reliable combustion is formed in burner downstream
Field is burnt, by the way that natural gas is rationally uniformly distributed, utilizes the model of circulation port in flue gas 13, effectively area of reduction localized hyperthermia
Enclose, suppress NOx generation.
Although exemplary embodiment describing the utility model with reference to several, it is to be understood that, term used is explanation
With exemplary and nonrestrictive term.Because the utility model can be embodied without departing from practical new in a variety of forms
Type it is spiritual or substantive, it should therefore be appreciated that above-described embodiment is not limited to any foregoing details, and should be in appended claims
Widely explained in the spirit and scope limited, therefore the whole changes fallen into claim or its equivalent scope and remodeling
Appended claims are all should be to be covered.
Claims (12)
- A kind of 1. low nitrogen burner, it is characterised in that including：Cylinder, its one end have aditus laryngis, and the wall portion of aditus laryngis opens up circulation port in multiple flue gases；Eddy flow tray, including eddy flow inner ring, eddy flow outer shroud and swirl vane, eddy flow tray is placed in the middle to be located in cylinder, and same with cylinder Axle, swirl vane are arranged between eddy flow inner ring and eddy flow outer shroud；Natural gas passage mechanism, including multiple peripheral conduits, multiple transitional region pipelines and central tube, multiple peripheral conduits are enclosed Set around cylinder, and the spray-hole of peripheral conduits is located at the outside of cylinder, and close to aditus laryngis；Central tube is arranged in eddy flow Ring, central tube include the natural air gun in center, natural gas air chamber and central-injection hole, and natural gas air chamber is located at the natural air gun in center Close aditus laryngis one end, central-injection hole connects via natural gas air chamber with the natural air gun in center；Multiple transitional region pipelines Set around central tube, and one end of transitional region pipeline passes through swirl vane；AndCombustion air passage mechanism, including center air passage and outer air passage, central tube and transitional region pipeline Between region be defined as center air passage, the region between peripheral conduits and transitional region pipeline is defined as outer air Passage；Wherein, the natural gas that the combustion air from center air passage sprays with central-injection hole is mixed to form central burner Region；The natural gas that the spray-hole of part combustion air and transitional region pipeline from outer air passage sprays is mixed to form Transition combustion zone；The natural gas that the spray-hole of another part combustion air and peripheral conduits from outer air passage sprays It is mixed to form peripheral combustion zone；Partial fume after burning can enter inner barrel via circulation port in flue gas.
- 2. low nitrogen burner as claimed in claim 1, it is characterised in that cylinder includes the wall of body, body and aditus laryngis Portion connects, and the wall portion of aditus laryngis inside contracts compared to body towards cylinder, and peripheral conduits are arranged in body so that a part for peripheral conduits Positioned at inner barrel.
- 3. low nitrogen burner as claimed in claim 2, it is characterised in that cylinder also includes guide plate, and it is connected to larynx The outer rim of the wall portion of mouth, and the expansion of the outer inclination towards cylinder.
- 4. low nitrogen burner as claimed in claim 3, it is characterised in that the scope at the angle of inclination of guide plate is 20 °- 45°。
- 5. low nitrogen burner as claimed in claim 1, it is characterised in that natural gas passage mechanism also includes multiple L-shaped Branch pipe, it includes the tube axial being mutually connected vertically and radial tubes, and tube axial surrounds the periphery of cylinder, and radial tubes are via in flue gas Circulation port stretches into inner barrel, and the projection vertically of radial tubes is at least partially disposed in the drop shadow spread of eddy flow tray, radially One end for stretching into inner barrel of pipe has radial injection hole.
- 6. low nitrogen burner as claimed in claim 5, it is characterised in that stretch into the periphery of the radial tubes of cylinder provided with more Individual circumferential spray-hole, its natural gas sprayed with the combustion air from center air passage and central-injection hole are mixed to form The central burner region.
- 7. low nitrogen burner as claimed in claim 6, it is characterised in that the throwing of at least one circumferential spray-hole vertically Shadow is located in the drop shadow spread of eddy flow tray, its day sprayed with the combustion air from center air passage and central-injection hole Right gas is mixed to form the central burner region；At least one circumferential spray-hole is located at outer air passage, its with from outer layer The natural gas that the part combustion air of air duct and the spray-hole of transitional region pipeline spray is mixed to form transition combustion zone.
- 8. low nitrogen burner as claimed in claim 5, it is characterised in that L-shaped branch pipe is distributed at equal intervals around cylinder, The peripheral conduits of identical quantity are provided between adjacent L-shaped branch pipe, the extended line of the radial tubes of each L-shaped branch pipe passes through the axle of cylinder Line.
- 9. low nitrogen burner as claimed in claim 1, it is characterised in that the number of circulation port is 6-12 in flue gas, The number of peripheral conduits is 6-24.
- 10. low nitrogen burner as claimed in claim 1, it is characterised in that one end provided with spray-hole of peripheral conduits Towards the inner inclination of cylinder.
- 11. low nitrogen burner as claimed in claim 1, it is characterised in that transitional region pipeline passes through swirl vane One end towards inner barrel tilt.
- 12. low nitrogen burner as claimed in claim 1, it is characterised in that the angle of swirl vane is 25 ° -60 °, rotation The quantity for flowing blade is 6-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720901519.6U CN207112806U (en) | 2017-07-24 | 2017-07-24 | A kind of low nitrogen burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720901519.6U CN207112806U (en) | 2017-07-24 | 2017-07-24 | A kind of low nitrogen burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207112806U true CN207112806U (en) | 2018-03-16 |
Family
ID=61585856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720901519.6U Withdrawn - After Issue CN207112806U (en) | 2017-07-24 | 2017-07-24 | A kind of low nitrogen burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207112806U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518677A (en) * | 2018-05-31 | 2018-09-11 | 西安西热锅炉环保工程有限公司 | A kind of low nitrogen burner |
| CN109297018A (en) * | 2017-07-24 | 2019-02-01 | 福州华夏蓝天信息科技有限公司 | A kind of low nitrogen burner |
| CN113048478A (en) * | 2021-04-01 | 2021-06-29 | 西安交大思源科技股份有限公司 | Low-calorific-value combustible gas cyclone low-nitrogen burner |
-
2017
- 2017-07-24 CN CN201720901519.6U patent/CN207112806U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297018A (en) * | 2017-07-24 | 2019-02-01 | 福州华夏蓝天信息科技有限公司 | A kind of low nitrogen burner |
| CN109297018B (en) * | 2017-07-24 | 2024-03-26 | 福州华夏蓝天信息科技有限公司 | Low nitrogen gas combustor |
| CN108518677A (en) * | 2018-05-31 | 2018-09-11 | 西安西热锅炉环保工程有限公司 | A kind of low nitrogen burner |
| CN108518677B (en) * | 2018-05-31 | 2023-09-12 | 西安西热锅炉环保工程有限公司 | Low nitrogen gas combustor |
| CN113048478A (en) * | 2021-04-01 | 2021-06-29 | 西安交大思源科技股份有限公司 | Low-calorific-value combustible gas cyclone low-nitrogen burner |
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