CN109297018A - A kind of low nitrogen burner - Google Patents
A kind of low nitrogen burner Download PDFInfo
- Publication number
- CN109297018A CN109297018A CN201710607922.2A CN201710607922A CN109297018A CN 109297018 A CN109297018 A CN 109297018A CN 201710607922 A CN201710607922 A CN 201710607922A CN 109297018 A CN109297018 A CN 109297018A
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- Prior art keywords
- cylinder
- natural gas
- spray
- air channel
- low nitrogen
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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 112
- 238000002485 combustion reaction Methods 0.000 claims abstract description 78
- 239000003345 natural gas Substances 0.000 claims abstract description 57
- 230000002093 peripheral effect Effects 0.000 claims abstract description 37
- 239000003546 flue gas Substances 0.000 claims abstract description 26
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 230000007704 transition Effects 0.000 claims abstract description 11
- 239000003517 fume Substances 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 23
- 239000004047 hole gas Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 9
- 239000000446 fuel Substances 0.000 description 9
- 238000002156 mixing Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000010586 diagram Methods 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
- 230000008859 change Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007547 defect Effects 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
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/70—Baffles or like flow-disturbing devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/007—Mixing tubes, air supply regulation
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
A kind of low nitrogen burner comprising 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 channel and outer air channel.The natural gas that combustion air and central-injection hole from center air channel spray 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 channel 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 channel 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
The present invention relates to natural gas clean combustion technique field, a kind of included flue gas inner circulation type especially set out, low NOx combustion
Burner structure.
Background technique
NOx is a kind of important component of atmosphere pollution, and one of an important factor for initiation haze and acid rain.Mesh
The preceding continuous improvement with environmental requirement, it is also increasingly stringent for the limitation of NOx discharge,
Neat gas burner is can to reduce NOx discharge using natural gas as fuel, thus neat gas burner obtained in recent years
To greatly developing.Neat gas burner has many advantages, such as clean and effective, safe and simple.
Specifically, neat gas burner is to reach chemical energy transformation by the way that natural gas and air are carried out mixing and burning
For the purpose of thermal energy.It is designed by reasonable burner structure, natural gas and air can be made to be uniformly mixed, guaranteeing efficiently combustion
On the basis of burning, the generation of local high temperature zone is reduced, to inhibit the generation of NOx in combustion process, reaches the discharge of low NOx
Amount.Such as patent CN 105135432A adjusts combustion zone fuel and sky using the structure type of inside and outside two layers of fuel gun
The distribution of gas reduces the formation of high-temperature area, reduces the discharge amount of NOx.
The mixing of fuel and air before into combustion zone is very big on combustion efficiency influence, however is entering combustion zone
Before, the mixing of natural gas and air that fuel gun sprays is all very limited over time and space, and it is natural that this will lead to this region
The mixed effect of gas and air is deteriorated, and then concentration in combustion zone, temperature distribution is non-uniform, increases the production quantity of NOx.
Therefore, the NOx emission of neat gas burner is still greatly improved space, reduces pollutant emissions there are also very much
Technological means has to be developed.There is still a need for design, more rationally effective ultra-low NOx emission burner structure form effectively drops
Low burn is burnt and control pollutant emission.
Summary of the invention
A primary object of the present invention is to overcome at least one defect of the above-mentioned prior art, provides a kind of low nitrogen
Volumetric combustion device, to solve the problems, such as that the mixing effect of natural gas and air is poor in existing neat gas burner, with tissue burning and
Reduce the generation and discharge of pollutant.
To reach above-mentioned purpose, the present invention provides a kind of low nitrogen burner comprising cylinder, eddy flow tray, natural 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 ring and swirl vane, eddy flow tray is placed in the middle to be located in cylinder, and coaxial with cylinder, and swirl vane is set to eddy flow inner ring
Between eddy flow outer ring.
Natural gas passage mechanism includes multiple peripheral conduits, multiple transitional region pipelines and central tube, multiple peripheral tubes
Road is arranged 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 gas chamber and central-injection hole, and natural gas gas chamber is set to center natural gas
One end of the close aditus laryngis of rifle, central-injection hole are connected to via natural gas gas chamber with the natural air gun in center；Multiple transitional region pipes
Road is arranged around central tube, and one end of transitional region pipeline passes through swirl vane.
Combustion air passage mechanism includes center air channel and outer air channel, central tube and transitional region pipe
Region between road is defined as center air channel, and the region between peripheral conduits and transitional region pipeline is defined as outer layer sky
Gas channel.
Wherein, the natural gas that combustion air and central-injection hole from center air channel spray is mixed to form center
Combustion zone；Part combustion air from outer air channel is mixed 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 channel sprays
Right gas is mixed to form peripheral combustion zone；Partial fume after burning can enter inner barrel via circulation port in flue gas.
The beneficial effect of the present invention compared to the prior art is: low nitrogen burner of the invention passes through inside and outside layer
The collective effect recycled in natural gas distribution mode and corresponding two layers of combustion air method of salary distribution and flue gas, in burner
Downstream forms efficient, reliable combustion field, by the way that natural gas to be rationally uniformly distributed, using circulation port in flue gas, has
Effect reduces the range of local high temperature zone, inhibits the generation of NOx.
Detailed description of the invention
Consider following the following detailed description of the embodiment of the present invention in conjunction with the accompanying drawings, various targets of the invention,
Feature and advantage will become apparent.Attached drawing is only exemplary diagram of the invention, is not necessarily drawn to scale.
In the accompanying drawings, same appended drawing reference always shows same or similar component.Wherein:
Fig. 1 is the structural schematic diagram of low nitrogen burner of the invention.
Fig. 2 is the three-dimensional cutaway view of low nitrogen burner of the invention.
Fig. 3 is the partial enlarged view of Fig. 1, and circulating path in flue gas is shown.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.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, thesing embodiments are provided so that the present invention more
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical attached drawing in figure
Label indicates same or similar structure, thus the detailed description that will omit them.
The term of relativity, such as " lower " 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 overturning of icon made thereon
Lower reverse, then the component described in " lower " side will be as the component in " higher " side.In addition, when certain layer in other layers or
When substrate "upper", it is possible to refer to that " direct " on other layers or substrate, or refers to that certain layer on other layers or substrate, or refers to other
The other layers of sandwiched between layer or substrate.
The present invention provides a kind of low nitrogen burner, can for boiler or any one pass through burner.Such as Fig. 1
To shown in Fig. 3, low nitrogen burner includes cylinder 10, eddy flow tray 20, natural gas passage mechanism and combustion air passage mechanism.
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 ring 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
Axis, swirl vane 23 are set between eddy flow inner ring 21 and eddy flow outer ring 22.
Natural gas passage mechanism includes multiple peripheral conduits 31, multiple transitional region pipelines 32 and central tube 33, multiple
Peripheral conduits 31 are arranged 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 gas chamber 332 and in
Heart spray-hole 333, natural gas gas chamber 332 are set to one end of the close aditus laryngis 11 of the natural air gun 331 in center, central-injection hole 333
It is connected to via natural gas gas chamber 332 with the natural air gun 331 in center；Multiple transitional region pipelines 32 are arranged around central tube 33,
And one end of transitional region pipeline 32 passes through swirl vane 23.
Combustion air passage mechanism includes center air channel 41 and outer air channel 42, central tube 33 and transition
Region between zone duct 32 is defined as center air channel 41, the area between peripheral conduits 31 and transitional region pipeline 32
Domain is defined as outer air channel 42.
Wherein, the combustion air from center air channel 41 mixes shape with the natural gas that central-injection hole 333 sprays
At central burner region；The spray-hole 321 of part combustion air and transitional region pipeline 32 from outer air channel 42 sprays
Natural gas out is mixed to form transition combustion zone；Another part combustion air and peripheral conduits from outer air channel 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, to reduce combustion zone oxygen content, reduces
Partial combustion temperature, and pass through the shape and range of higher air velocity control burner downstream flame.
In the operational process of low nitrogen burner, the combustion air into cylinder 10 is divided into two parts, respectively into
Enter center air channel 41 and outer air channel 42.Wherein, into the combustion air in center air channel 41, through overwinding
The effect of flow table 20 forms strong rotational flow gas, with the natural gas mixing that central-injection hole 333 sprays, 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 channel 42 sprays
Mutually blending forms intermediate transition combustion zone；The natural gas jet stream 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 channel 42 in radial directions, form periphery combustion
Burn region.
Therefore, entire combustion zone is divided into the transition combustion zone in the central burner region of fuel-rich combustion, fuel-lean combustion
Domain and peripheral combustion zone three parts.Inhibit the generation of NOx 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 greater than pressure in hole, so as to
External flue gas is rolled up in sucking cylinder 10, realizes that flue gas enters combustion zone, burning local temperature is reduced, realizes bias combustion.
Using the shape and range of higher air velocity control burner downstream flame, to reduce the effect of NOx emission.
In the present embodiment, cylinder 10 includes ontology 14, and ontology 14 is connect with the wall portion 12 of aditus laryngis 11, the wall portion 12 of aditus laryngis 11
It is inside contracted compared to ontology 14 towards cylinder 10, peripheral conduits 31 are arranged in ontology 14, so that a part of peripheral conduits 31 is located at cylinder
Inside body 10, another part is located at outside cylinder 10.Wherein, one end equipped with spray-hole 311 of peripheral conduits 31 is towards cylinder 10
Inner inclination, to spray natural gas to cylinder 10, with natural gas quickly, uniformly mix.
In the present embodiment, cylinder 10 further includes guide plate 15, 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 range of the tilt angle of guide plate 15 can be 20 ° -45 °.As shown in figure 3, extend out
Wall portion 12 makes aditus laryngis 11 in the shape of a trumpet, inhales after partial fume discharge towards cylinder curls inward, a part is via circulation port 13 in flue gas
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, the cooperation of circulation port 13 can aid in form circulation in flue gas in guide plate 15 and flue gas, and local high temperature zone is effectively reduced
Range inhibits the generation of NOx.
In the present embodiment, natural gas passage mechanism further includes multiple L shape branch pipes 34 comprising 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 protrude into cylinder via circulation port 13 in flue gas
Inside body 10, and the projection along axial direction 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 protruded into inside cylinder 10 have radial injection hole 343.
Wherein, the periphery for protruding into the radial tubes 342 of cylinder 10 is equipped with multiple circumferential spray-holes 344, and comes from middle 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, at least one circumferential spray-hole 344 is located in the drop shadow spread of eddy flow tray 20 along axial projection, and comes
The natural gas sprayed from the combustion air in center air channel 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 channel 42, with the combustion-supporting sky in part from outer air channel 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 by two-stage, natural gas point 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 shape branch pipe 34 can also incite somebody to action
Natural gas injects the top of eddy flow tray 20, one end across swirl vane 23 of transitional region pipeline 32 to be tilted towards cylinder, from
And natural gas is also injected to 20 top of eddy flow tray, three strands of natural gases are mixed with eddy flow combustion air.Outer layer fuel is emitted directly toward outer
Layer combustion air, guarantee burner outlet at VELOCITY DISTRIBUTION rationally, fuel gas and combustion air blending uniformly, after burning flue gas pass through
By being recycled into combustion zone in flue gas, combustion zone is rationally controlled, to guarantee the stability burnt and good NOx abatement
Effect.
In the present embodiment, L shape branch pipe 34 is distributed at equal intervals around cylinder 10, is equipped between adjacent L shape branch pipe 34 identical
The peripheral conduits 31 of quantity, the extended line of the radial tubes 342 of each L shape 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, will be disposed with a L at 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 conclusion low nitrogen burner of the invention passes through inside and outside layer natural gas distribution mode and corresponding two
The collective effect recycled in the layer combustion air method of salary distribution and flue gas, forms efficient, reliable combustion field in burner downstream,
By the way that natural gas to be rationally uniformly distributed, using circulation port 13 in flue gas, the range of local high temperature zone is effectively reduced, presses down
The generation of NOx processed.
Although exemplary embodiment describes the present invention with reference to several, it is to be understood that, term used is explanation and shows
Example property, term and not restrictive.The spirit or reality that can be embodied in a variety of forms due to the present invention without departing from invention
Matter, it should therefore be appreciated that above-described embodiment is not limited to any of the foregoing details, and the spirit defined by appended claims
It all should be accompanying power with the whole change and modification widely explained, therefore fallen into claim or its equivalent scope in range
Benefit requires to be covered.
Claims (12)
1. a kind of low nitrogen burner, comprising:
Cylinder, 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 ring and swirl vane, eddy flow tray is placed in the middle to be located in cylinder, and same with cylinder
Axis, swirl vane are set between eddy flow inner ring and eddy flow outer ring；
Natural gas passage mechanism, including multiple peripheral conduits, multiple transitional region pipelines and central tube, multiple peripheral conduits are enclosed
It is arranged 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 gas chamber and central-injection hole, and natural gas gas chamber is set to the natural air gun in center
Close aditus laryngis one end, central-injection hole is connected to via natural gas gas chamber with the natural air gun in center；Multiple transitional region pipelines
It is arranged around central tube, and one end of transitional region pipeline passes through swirl vane；And
Combustion air passage mechanism, including center air channel and outer air channel, central tube and transitional region pipeline
Between region be defined as center air channel, the region between peripheral conduits and transitional region pipeline is defined as outer air
Channel；
Wherein, the natural gas that combustion air and central-injection hole from center air channel spray 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 channel 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 channel 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 described in claim 1, wherein cylinder includes ontology, and the wall portion of ontology and aditus laryngis connects,
The wall portion of aditus laryngis is inside contracted compared to ontology towards cylinder, and peripheral conduits are arranged in ontology, so that a part of peripheral conduits is located at cylinder
Internal portion.
3. low nitrogen burner as claimed in claim 2, wherein cylinder further includes guide plate, is connected to the wall of aditus laryngis
The outer rim in portion, and the expansion of the outer inclination towards cylinder.
4. low nitrogen burner as claimed in claim 3, wherein the range of the tilt angle of guide plate is 20 ° -45 °.
5. low nitrogen burner as described in claim 1, wherein natural gas passage mechanism further includes multiple L shape branch pipes,
Including the tube axial being mutually connected vertically and radial tubes, tube axial surrounds the periphery of cylinder, and radial tubes are via circulation port in flue gas
Inner barrel is protruded into, and along the drop shadow spread for being at least partially disposed at eddy flow tray along the projection of axial direction of radial tubes, radial tubes are stretched
The one end for entering inner barrel has radial injection hole.
6. low nitrogen burner as claimed in claim 5, wherein the periphery for protruding into the radial tubes of cylinder is equipped with multiple circumferential directions
Spray-hole is mixed to form in described with the natural gas of combustion air and the ejection of central-injection hole from center air channel
Heart combustion zone.
7. low nitrogen burner as claimed in claim 6, wherein at least one circumferential spray-hole is located at along axial projection
It is mixed with the natural gas of combustion air and the ejection of central-injection hole from center air channel in the drop shadow spread of eddy flow tray
Conjunction forms the central burner region；At least one circumferential spray-hole is located at outer air channel, leads to from outer air
The natural gas that the part combustion air in road 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, wherein L shape branch pipe is distributed at equal intervals around cylinder, adjacent L
The peripheral conduits of identical quantity are equipped between shape branch pipe, the extended line of the radial tubes of each L shape branch pipe passes through the axis of cylinder.
9. low nitrogen burner as described in claim 1, wherein the number of circulation port is 6-12 in flue gas, peripheral tube
The number in road is 6-24.
10. low nitrogen burner as described in claim 1, wherein one end equipped with spray-hole of peripheral conduits is towards cylinder
Inner inclination.
11. low nitrogen burner as described in claim 1, wherein one end across swirl vane of transitional region pipeline
It is tilted towards inner barrel.
12. low nitrogen burner as described in claim 1, wherein the angle of swirl vane is 25 ° -60 °, swirl vane
Quantity be 6-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710607922.2A CN109297018B (en) | 2017-07-24 | 2017-07-24 | Low nitrogen gas combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710607922.2A CN109297018B (en) | 2017-07-24 | 2017-07-24 | Low nitrogen gas combustor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109297018A true CN109297018A (en) | 2019-02-01 |
| CN109297018B CN109297018B (en) | 2024-03-26 |
Family
ID=65167022
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710607922.2A Active CN109297018B (en) | 2017-07-24 | 2017-07-24 | Low nitrogen gas combustor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748880A (en) * | 2019-09-19 | 2020-02-04 | 上海诺特飞博燃烧设备有限公司 | Combustion device of double-gas-ring injection gun |
| CN112361335A (en) * | 2020-11-27 | 2021-02-12 | 华侨大学 | Combustor based on multizone burning |
| CN112361335B (en) * | 2020-11-27 | 2024-07-26 | 华侨大学 | Combustor based on multizone burning |
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| US5135387A (en) * | 1989-10-19 | 1992-08-04 | It-Mcgill Environmental Systems, Inc. | Nitrogen oxide control using internally recirculated flue gas |
| US5470224A (en) * | 1993-07-16 | 1995-11-28 | Radian Corporation | Apparatus and method for reducing NOx , CO and hydrocarbon emissions when burning gaseous fuels |
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| CN105299651A (en) * | 2015-11-18 | 2016-02-03 | 上海齐耀热能工程有限公司 | Smoke internal circulation low-nitrogen combustor |
| CN105805746A (en) * | 2016-05-12 | 2016-07-27 | 徐州科融环境资源股份有限公司 | Classified-combustion fuel gas low-nitrogen combustor |
| CN106196057A (en) * | 2016-08-26 | 2016-12-07 | 中能服能源科技股份有限公司 | A kind of novel low nitrogen oxide burner structure |
| CN205939146U (en) * | 2016-08-26 | 2017-02-08 | 中能服能源科技股份有限公司 | Novel low NOx gas combustion ware |
| CN207112806U (en) * | 2017-07-24 | 2018-03-16 | 福州华夏蓝天信息科技有限公司 | A kind of low nitrogen burner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110748880A (en) * | 2019-09-19 | 2020-02-04 | 上海诺特飞博燃烧设备有限公司 | Combustion device of double-gas-ring injection gun |
| CN112361335A (en) * | 2020-11-27 | 2021-02-12 | 华侨大学 | Combustor based on multizone burning |
| CN112361335B (en) * | 2020-11-27 | 2024-07-26 | 华侨大学 | Combustor based on multizone burning |
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