CN208139272U - A kind of low nitrogen burner - Google Patents
A kind of low nitrogen burner Download PDFInfo
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- CN208139272U CN208139272U CN201721924585.1U CN201721924585U CN208139272U CN 208139272 U CN208139272 U CN 208139272U CN 201721924585 U CN201721924585 U CN 201721924585U CN 208139272 U CN208139272 U CN 208139272U
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- cylinder
- natural gas
- low nitrogen
- aditus laryngis
- combustion
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Abstract
The utility model relates to a kind of low nitrogen burners, including：Cylinder, natural gas passage mechanism and combustion air passage mechanism, one end of cylinder have aditus laryngis, and the wall portion of aditus laryngis opens up multiple interior circulation ports, and combustion air passage mechanism is used to be passed through combustion air to cylinder；Combustion air mixes combining combustion with the natural gas sprayed via natural gas passage mechanism.For the low nitrogen burner of the utility model due to opening up circulation port in flue gas at aditus laryngis, the pressure outside hole is greater than pressure in hole, so as to roll up external flue gas in sucking cylinder, realizes that flue gas enters combustion zone, reduces burning local temperature, realize bias combustion.Using the shape and range of higher air velocity control burner downstream flame, to reduce the effect of NOx emission.The low nitrogen of the utility model is uniformly mixed in eddy flow tray exit, to realize combustion even, and then reduces the effect of NOx emission.
Description
Technical field
It is a kind of included flue gas inner circulation type especially set out, low the utility model relates to natural gas clean combustion technique field
NOx combustion device 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 105135432 A of patent CN, using the structure type of inside and outside two layers of fuel gun, adjust combustion zone fuel and
The distribution of air 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.
The applicant has applied for relevant low nitrogen burner before, although in the natural gas passage mechanism of the burner
The peripheries of the radial tubes radial tubes that protrude into cylinder of multiple L shape branch pipes be equipped with multiple circumferential spray-holes, but gas mixing is still
Not enough uniformly.
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.
Utility model content
One main purpose of the utility model is to overcome at least one defect of the above-mentioned prior art, provide a kind of low
Nitrogen burner, to solve the problems, such as that the mixing effect of natural gas and air is poor 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, the low nitrogen burner
Including：
Cylinder, one end have aditus laryngis, and the wall portion of aditus laryngis opens up circulation port in multiple flue gases；
Natural gas passage mechanism and combustion air passage mechanism；The combustion air passage mechanism to cylinder for being passed through
Combustion air, combustion air mix combining combustion with the natural gas sprayed via natural gas passage mechanism, the partial fume after burning
Inner barrel can be entered via circulation port in flue gas；
The low nitrogen burner further includes eddy flow tray comprising eddy flow inner ring, eddy flow outer ring and swirl vane, rotation
Flow table is placed in the middle to be located in cylinder, and coaxial with cylinder, and swirl vane is set between eddy flow inner ring and eddy flow outer ring；
The natural gas passage mechanism includes central tube and multiple peripheral conduits, and central tube is arranged in eddy flow
Ring, central tube include that the natural air gun in center, natural gas gas chamber and central-injection hole (313), natural gas gas chamber are set to center day
One end of the close aditus laryngis of right air gun, central-injection hole is connected to via natural gas gas chamber with the natural air gun in center；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；
The natural gas passage mechanism further includes multiple L shape branch pipes, and the L shape branch pipe includes being mutually connected vertically
Tube axial and radial tubes, tube axial surround the periphery of cylinder, and radial tubes protrude into inner barrel via circulation port in flue gas, in eddy flow
Disk outlet front is equipped with radial tubes in the same plane and coiled coil from outer to inner spiral element, the spiral element
Outmost turns and each radial tubes ventilation connect, spiral element periphery wall be equipped with it is multiple to spiral center spray spray-holes.
Further, cylinder includes ontology, and the wall portion of ontology and aditus laryngis connects, and the wall portion of aditus laryngis is compared to ontology towards cylinder
It inside contracts, peripheral conduits are arranged in ontology, so that a part of peripheral conduits is located at inner barrel.
Further, cylinder further includes guide plate, is connected to the outer rim of the wall portion of aditus laryngis, and towards the outer inclination of cylinder
Expansion.
Preferably, the range of the tilt angle of guide plate is 20 ° -45 °.
Further, L shape branch pipe is distributed at equal intervals around cylinder, outer equipped with identical quantity between adjacent L shape branch pipe
Bustle pipe road, the extended line of the radial tubes of each L shape branch pipe pass through the axis of cylinder.
Further, the number of circulation port is 8-12 in flue gas, and the number of peripheral conduits is 16-24.
Further, inner inclination of the one end equipped with spray-hole of the peripheral conduits towards cylinder.
The beneficial effect of the utility model compared to the prior art is：The low nitrogen burner of the utility model due to
Circulation port in flue gas is opened up at aditus laryngis, the pressure outside hole is greater than pressure in hole, so as to which external flue gas is rolled up sucking cylinder
It is interior, it realizes that flue gas enters combustion zone, reduces burning local temperature, realize bias combustion.The periphery of spiral element is equipped with multiple
Circumferential spray-hole is uniformly mixed gas in cylinder whole cross section, controls burner downstream flame using higher air velocity
Shape and range, to reduce the effect of NOx emission.Air and natural gas are uniformly mixed in eddy flow tray exit, thus real
Existing combustion even, and then reduce the effect of NOx emission.
Detailed description of the invention
Consider the detailed description of the following preferred embodiment to the utility model in conjunction with the accompanying drawings, the utility model it is each
Kind target, feature and advantage will become apparent.Attached drawing is only the exemplary diagram of the utility model, is not necessarily
It is drawn to scale.In the accompanying drawings, same appended drawing reference always shows same or similar component.Wherein：
Fig. 1 is the three-dimensional cutaway view of the low nitrogen burner of the utility model.
Fig. 2 is Fig. 1 overlooking structure diagram.
Wherein, the reference numerals are as follows：10- cylinder, 11- aditus laryngis, 12- wall portion, circulation port in 13- flue gas, 14- sheet
Body, 15- guide plate, 20- eddy flow tray, 21- eddy flow inner ring, 22- eddy flow outer ring, 23- swirl vane, 31- central tube, 311-
The natural air gun in center, 312- natural gas gas chamber, 313- central-injection hole, the more a peripheral conduits of 32-, 321- spray hole location, 33-L
Shape branch pipe, 331- tube axial, 332- radial tubes, 333- spiral element, 334- spray-hole, 40- natural gas passage mechanism and combustion-supporting
Air duct mechanism.
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 this is practical new
The design of example embodiment more comprehensively and completely, and is comprehensively communicated to those skilled in the art by type.It is identical in figure
Appended drawing reference 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 utility model provides a kind of low nitrogen burner, as shown in Figure 1, 2 comprising：Cylinder 10, natural gas channel
One end of mechanism and combustion air passage mechanism 40, cylinder 10 has aditus laryngis 11, and the wall portion 12 of aditus laryngis 11 opens up in multiple flue gases
Circulation port 13, combustion air passage mechanism 40 are used to be passed through combustion air to cylinder 10；Combustion air with via natural gas channel
The natural gas that mechanism sprays mixes combining combustion, and the partial fume after burning can enter in cylinder 10 via circulation port 13 in flue gas
Portion.
Due to opening up circulation port 13 in flue gas at aditus laryngis 11, pressure outside hole is greater than pressure in hole, so as to will be outer
In portion's flue gas volume sucking cylinder 10, realizes that flue gas enters combustion zone, reduce burning local temperature, realize bias combustion.It utilizes
The shape and range of higher air velocity control burner downstream flame, to reduce the effect of NOx emission.
In the present embodiment, low nitrogen burner further includes eddy flow tray 20 comprising 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 coaxial with cylinder 10, and swirl vane 23 is set to eddy flow inner ring
Between 21 and eddy flow outer ring 22.Wherein, the angle of swirl vane 23 can be 25 ° -60 °, and the quantity of swirl vane 23 can be 6-12
It is a.
Natural gas passage mechanism includes central tube 31 and multiple peripheral conduits 32, and central tube 31 is arranged in eddy flow inner ring
21, central tube 31 includes that the natural air gun 311 in center, natural gas gas chamber 312 and central-injection hole 313, natural gas gas chamber 312 are set
In one end of the close aditus laryngis 11 of the natural air gun 311 in center, central-injection hole 313 is natural via natural gas gas chamber 312 and center
Air gun 311 is connected to.Multiple peripheral conduits 32 are arranged around cylinder 10, and the spray-hole 321 of peripheral conduits 32 is located at cylinder 10
Outside, and close to aditus laryngis 11.
Cylinder 10 includes ontology 14, and ontology 14 is connect with the wall portion 12 of aditus laryngis 11, and the wall portion 12 of aditus laryngis 11 is compared to ontology
14 inside contract towards cylinder 10, and peripheral conduits 32 are arranged in ontology 14, so that a part of peripheral conduits 32 is located inside cylinder 10,
Another part is located at outside cylinder 10.Wherein, the inside of one end towards the cylinder 10 equipped with spray-hole 321 of peripheral conduits 32 is inclined
Tiltedly, to spray natural gas to cylinder 10, quickly, uniformly to be mixed with natural gas.
Cylinder 10 further includes guide plate 15, is connected to the outer rim of the wall portion 12 of aditus laryngis 11, and incline towards the outside of cylinder 10
Oblique expansion.Wherein, the range of the tilt angle of guide plate 15 is 20 ° -45 °.The wall portion 12 extended out makes aditus laryngis 11 in loudspeaker
Mouth shape is inhaled after partial fume discharge towards cylinder curls inward, and a part enters the transition combustion zone in cylinder via circulation port 13 in flue gas,
A part is directed to peripheral conduits 32 by guide plate 15, into peripheral combustion zone.Therefore, guide plate 15 and circulation port in flue gas
13 cooperations can aid in form circulation in flue gas, and the range of local high temperature zone is effectively reduced, inhibits the generation of NOx.
In the present embodiment, the natural gas passage mechanism further includes multiple L shape branch pipes 33, and the L shape branch pipe 33 wraps
Include the tube axial 331 being mutually connected vertically and radial tubes 332, tube axial 331 surrounds the periphery of cylinder 10, radial tubes 332 via
Circulation port 13 protrudes into inside cylinder 10 in flue gas, is equipped in front of the outlet of eddy flow tray 20 in the same plane with radial tubes 332
And the spiral element 333 of coiled coil, the outmost turns of the spiral element 333 and the ventilation of each radial tubes 332 connect from outer to inner,
Multiple spray-holes 334 sprayed to spiral center are equipped in the periphery wall of spiral element 333.
Therefore, combustion air and natural gas are classified by natural gas passage mechanism and combustion air passage mechanism 40.Portion
Point natural gas can be injected into center by central tube 31, while the circumferential spray-hole 334 of spiral element 333 can also will be natural
Gas injects 20 top of eddy flow tray, and portion of natural gas is sprayed by peripheral conduits 32, is emitted directly toward the combustion air of outer layer, guarantees
At burner outlet VELOCITY DISTRIBUTION rationally, fuel gas and combustion air blending uniformly, after burning flue gas via recycled in flue gas into
Enter combustion zone, rationally control combustion zone, to guarantee the stability and good NOx abatement effect of burning.
In the present embodiment, L shape branch pipe 33 is distributed at equal intervals around cylinder 10, is equipped between adjacent L shape branch pipe 33 identical
The peripheral conduits 32 of quantity, the extended line of the radial tubes 332 of each L shape branch pipe 33 pass through the axis of cylinder 10.
In the present embodiment, the number of circulation port 13 is 8-12 in flue gas, and the number of peripheral conduits 32 is 16-24.
In conclusion the low nitrogen burner of the utility model is at aditus laryngis 11 due to opening up circulation port 13 in flue gas,
Pressure outside hole is greater than pressure in hole, so as to roll up external flue gas in sucking cylinder, realizes that flue gas enters combustion zone, drops
Low burn burns local temperature, realizes bias combustion.The shape and range of burner downstream flame are controlled using higher air velocity,
To reduce the effect of NOx emission.
Although exemplary embodiment describes the utility model with reference to several, it is to be understood that, term used is explanation
With term exemplary, and not restrictive.Since the utility model can be embodied in a variety of forms without departing from practical new
The spirit or essence of type, it should therefore be appreciated that above-described embodiment is not limited to any of the foregoing details, and should be in appended claims
Defined by widely explain in spirit and scope, therefore fall into whole change and modification in claim or its equivalent scope
It all should be appended claims to be covered.
Claims (7)
1. a kind of low nitrogen burner, which is characterized in that the low nitrogen burner includes：
Cylinder (10), one end have aditus laryngis (11), and the wall portion (12) of aditus laryngis (11) opens up circulation port (13) in multiple flue gases；
Natural gas passage mechanism and combustion air passage mechanism (40)；The combustion air passage mechanism (40) is used for cylinder
(10) it is passed through combustion air, combustion air mixes combining combustion with the natural gas sprayed via natural gas passage mechanism；
The low nitrogen burner further includes eddy flow tray (20) comprising eddy flow inner ring (21), eddy flow outer ring (22) and rotation
It flows blade (23), eddy flow tray (20) is placed in the middle to be located in cylinder (10), and coaxially with cylinder (10), swirl vane (23) is set to
Between eddy flow inner ring (21) and eddy flow outer ring (22)；
The natural gas passage mechanism includes central tube (31) and multiple peripheral conduits (32), and central tube (31) is arranged in
Eddy flow inner ring (21), central tube (31) include the natural air gun in center (311), natural gas gas chamber (312) and central-injection hole
(313), natural gas gas chamber (312) is set to one end of the close aditus laryngis (11) of the natural air gun in center (311), central-injection hole
(313) it is connected to via natural gas gas chamber (312) with the natural air gun in center (311)；Multiple peripheral conduits (32) surround cylinder (10)
Setting, and the spray-hole (321) of peripheral conduits (32) is located at the outside of cylinder (10), and close to aditus laryngis (11)；
The natural gas passage mechanism further includes multiple L shape branch pipes (33), and the L shape branch pipe (33) includes the company of being mutually perpendicular to
The tube axial (331) and radial tubes (332) connect, tube axial (331) surround the periphery of cylinder (10), and radial tubes (332) are via cigarette
Circulation port (13) protrudes into cylinder (10) inside in gas, is equipped with radial tubes (332) in eddy flow tray (20) outlet front positioned at same
In the plane and from outer to inner spiral element (333) of coiled coil, the outmost turns and each radial tubes of the spiral element (333)
(332) ventilation connection is equipped with multiple spray-holes (334) sprayed to spiral center in the periphery wall of spiral element (333).
2. low nitrogen burner as described in claim 1, which is characterized in that cylinder (10) includes ontology (14), ontology
(14) it being connect with the wall portion (12) of aditus laryngis (11), the wall portion (12) of aditus laryngis (11) is inside contracted compared to ontology (14) towards cylinder (10),
Peripheral conduits (32) are arranged in ontology (14), so that a part of peripheral conduits (32) is located at cylinder (10) inside.
3. low nitrogen burner as described in claim 1, which is characterized in that cylinder (10) further includes guide plate (15),
It is connected to the outer rim of the wall portion (12) of aditus laryngis (11), and the expansion of the outer inclination towards cylinder (10).
4. low nitrogen burner as claimed in claim 3, which is characterized in that the range of the tilt angle of guide plate (15) is
20°-45°。
5. low nitrogen burner as described in claim 1, which is characterized in that L shape branch pipe (33) is between cylinder (10) etc.
Away from distribution, the peripheral conduits (32) of identical quantity, the radial tubes of each L shape branch pipe (33) are equipped between adjacent L shape branch pipe (33)
(332) extended line passes through the axis of cylinder (10).
6. low nitrogen burner as described in claim 1, which is characterized in that the number of circulation port is 8-12 in flue gas,
The number of peripheral conduits is 16-24.
7. low nitrogen burner as described in claim 1, which is characterized in that the peripheral conduits (32) are equipped with injection
Inner inclination of the one end in hole (321) towards cylinder (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721924585.1U CN208139272U (en) | 2017-12-30 | 2017-12-30 | A kind of low nitrogen burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721924585.1U CN208139272U (en) | 2017-12-30 | 2017-12-30 | A kind of low nitrogen burner |
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| Publication Number | Publication Date |
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| CN208139272U true CN208139272U (en) | 2018-11-23 |
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| CN201721924585.1U Active CN208139272U (en) | 2017-12-30 | 2017-12-30 | A kind of low nitrogen burner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107898A (en) * | 2019-05-30 | 2019-08-09 | 唐山金沙燃烧热能股份有限公司 | A kind of coke-stove gas low NO |
| CN111780112A (en) * | 2020-07-14 | 2020-10-16 | 江苏迈阳环保有限公司 | Injection mechanism for low-nitrogen combustor |
| RU2746144C1 (en) * | 2020-09-07 | 2021-04-07 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) | High-speed 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
- 2017-12-30 CN CN201721924585.1U patent/CN208139272U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107898A (en) * | 2019-05-30 | 2019-08-09 | 唐山金沙燃烧热能股份有限公司 | A kind of coke-stove gas low NO |
| CN110107898B (en) * | 2019-05-30 | 2024-03-26 | 唐山金沙燃烧热能股份有限公司 | Coke oven gas low-nitrogen burner |
| CN111780112A (en) * | 2020-07-14 | 2020-10-16 | 江苏迈阳环保有限公司 | Injection mechanism for low-nitrogen combustor |
| CN111780112B (en) * | 2020-07-14 | 2022-06-21 | 江苏迈阳环保有限公司 | Injection mechanism for low-nitrogen combustor |
| RU2746144C1 (en) * | 2020-09-07 | 2021-04-07 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) | High-speed 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 |
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