CN109737401A - A kind of low NO being mixed and burned using lean gas/flammable cyclonic current - Google Patents
A kind of low NO being mixed and burned using lean gas/flammable cyclonic current Download PDFInfo
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- CN109737401A CN109737401A CN201811629902.6A CN201811629902A CN109737401A CN 109737401 A CN109737401 A CN 109737401A CN 201811629902 A CN201811629902 A CN 201811629902A CN 109737401 A CN109737401 A CN 109737401A
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- central tube
- sleeve
- lean gas
- fin guide
- guide plate
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Abstract
The invention discloses a kind of low NOs being mixed and burned using lean gas/flammable cyclonic current, belong to Thermal Energy and Power Engineering technical field, including central tube, its periphery is successively arranged combustible gas sleeve and air sleeve, central tube is closed at one end, it is connected between central tube and combustible gas sleeve by fin guide plate, the closed one end of central tube, corresponding combustible gas sleeve and air sleeve are open ports, fin guide plate is divided into the side fin guide plate that 2 are parallel to each other and 1 bottom surface fin guide plate, lean gas exit passageway is wherein formed between 2 side fin guide plates, the lateral surface of 2 side fin guide plates and central tube has inclination angle.It avoids burner outlet oxygen content excessively high and burns acutely, formation localized hyperthermia realizes that recirculating zone volume inhales the air of surrounding to realize low oxygen combustion by the eddy flow that combustible gas and lean gas are formed, inhibits thermal NOxFormation.
Description
[technical field]
It is especially a kind of to utilize lean gas/flammable cyclonic current mixing combustion the invention belongs to Thermal Energy and Power Engineering technical field
The low NO of burning.
[background technique]
Fuel gas, due to fuel abundance, proper temperature, high oxygen content, leads to burning acutely, shape in the outlet of burner
At localized hyperthermia, and the nitrogen of high-temperature area is easily oxidized to a large amount of thermal NO at high temperaturex。NOxIt is discharged into atmosphere
Nitric acid rain can be generated, acid rain can bring extensive harm to environment, cause huge economic loss, while NOxAlso to the body of people
Body health has direct damage, and so that burning gases is mixed to form eddy flow and can be realized reduction NOxDischarge.Gas forms eddy flow energy
It is enough that there is very high volume suction rate to surrounding medium, high temperature recirculation zone is formed in burner outlet, improves the stability of flame.
Traditional makes air-flow rotate the method for becoming rotating jet nothing more than two kinds.One is be introduced tangentially into air-flow
One cylindrical conduit, second is that installing guide vane additional in the gas flow.The second way is increased by the rational design to burner
The uniformity of air blast mixing, improves flame holding.
[summary of the invention]
It is an object of the invention to overcome the above-mentioned prior art, provide a kind of mixed using lean gas/flammable cyclonic current
The low NO of combination burning.It avoids burner outlet oxygen content excessively high and burns acutely, form localized hyperthermia, pass through combustible gas
It realizes that recirculating zone volume inhales the air of surrounding to realize low oxygen combustion with the eddy flow that lean gas is formed, inhibits thermal NOxFormation.
In order to achieve the above objectives, the present invention is achieved by the following scheme:
A kind of low NO being mixed and burned using lean gas/flammable cyclonic current, including central tube, periphery are successively arranged
Combustible gas sleeve and air sleeve, central tube is closed at one end, is connected between central tube and combustible gas sleeve by fin guide plate, in
One end of heart duct occlusion, corresponding combustible gas sleeve and air sleeve are open ports.
A further improvement of the present invention lies in that:
Central tube, combustible gas sleeve and air bushing core axis are overlapped.
The diameter ratio of central tube, combustible gas sleeve and air sleeve is 1:(2-3): (2.5-4).
Fin guide plate is divided into the side fin guide plate that 2 are parallel to each other and 1 bottom surface fin guide plate, wherein 2 side ribs
Lean gas exit passageway is formed between piece guide plate.
The lateral surface of 2 side fin guide plates and central tube has inclination angle a, and wherein the range of a is 20 ° -60 °.
Lean gas exit passageway is distributed with 4-6 around central tube.
Lean gas exit passageway is evenly around between central tube and combustible gas sleeve.
Compared with prior art, the invention has the following advantages:
The present invention can pass through the guide plate by being uniformly arranged fin guide plate, lean gas between central tube and combustible gas sleeve
It spreads out and is uniformly mixed with combustible gas realization, two kinds of gases not only can be made uniformly to mix and be capable of forming rotation simultaneously
Turn jet stream, forms recirculating zone in burner outlet, volume inhales the air and high-temperature flue gas of surrounding.Mixed gas will not at burning initial stage
Because local oxygen content is excessively high and there is a phenomenon where violent burnings, to reduce thermal NOxGeneration, improve burning
The stability of flame.
Further, 2 of lean gas exit passageway parallel side fin guide plates have certain tilt angle, so that poor
Not only there are also the speed of tangent line and radial direction for the speed with axis direction simultaneously for gas and combustible gas.
[Detailed description of the invention]
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is top view of the invention；
Fig. 3 is section plan of the invention；
Fig. 4 is schematic perspective view of the invention；
Fig. 5 is three-dimensional cutaway view of the invention.
Wherein: 1- central tube；2- combustible gas sleeve；3- air sleeve；4- lean gas exit passageway；The side 5- fin guide plate；
The bottom surface 6- fin guide plate.
[specific embodiment]
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, the embodiment being not all of, and it is not intended to limit range disclosed by the invention.In addition, with
In lower explanation, descriptions of well-known structures and technologies are omitted, obscures concept disclosed by the invention to avoid unnecessary.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment should fall within the scope of the present invention.
The various structural schematic diagrams for disclosing embodiment according to the present invention are shown in the attached drawings.These figures are not in proportion
It draws, wherein some details are magnified for the purpose of clear expression, and some details may be omitted.As shown in the figure
The shape in various regions, layer and relative size, the positional relationship between them out is merely exemplary, in practice may be due to
Manufacturing tolerance or technical restriction and be deviated, and those skilled in the art may be additionally designed as required have not
Similar shape, size, the regions/layers of relative position.
In context disclosed by the invention, when one layer/element is referred to as located at another layer/element "upper", the layer/element
Can may exist intermediate layer/element on another layer/element or between them.In addition, if in a kind of court
One layer/element is located at another layer/element "upper" in, then when turn towards when, the layer/element can be located at another layer/
Element "lower".
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
The invention will be described in further detail with reference to the accompanying drawing:
Referring to Fig. 1 and 2, a kind of low NO being mixed and burned using lean gas/flammable cyclonic current of the present invention, including center
Pipe 1, periphery are successively arranged combustible gas sleeve 2 and air sleeve 3, and central tube 1 is closed at one end, central tube 1 and combustible gas sleeve 2
Between be connected to by fin guide plate, the closed one end of central tube 1, corresponding combustible gas sleeve 2 and air sleeve 3 are open ports.
Central tube 1, combustible gas sleeve 2 and 3 central axis of air sleeve are overlapped.Central tube 1, combustible gas sleeve 2 and air sleeve 3 it is straight
Diameter ratio is 1:(2-3): (2.5-4).Fin guide plate is divided into the side fin guide plate 5 that 2 are parallel to each other and 1 bottom surface fin guide plate
6, wherein forming lean gas exit passageway 4 between 2 side fin guide plates 5.The lateral surface of 2 side fin guide plates 5 and central tube 1
There is inclination angle a, wherein the range of a is 20 ° -60 °.Lean gas exit passageway 4 is distributed with 4-6 around central tube 1.Lean gas outlet is logical
Road 4 is evenly around between central tube 1 and combustible gas sleeve 2.
The operation principle of the present invention is that:
Lean gas enters from central tube 1, is then dispersed into flammable air-casing by the lean gas exit passageway 4 of 1 side of central tube
Cylinder 2；Combustible gas enters the local and lean gas mixing shape connecting on the top of combustible gas sleeve 2 with central tube 1 after combustible gas sleeve 2
At rotating jet.The rotating flow continues volume forward and inhales the air entered by air sleeve 3.Due to the two panels of lean gas exit passageway
Side fin guide plate is parallel to each other and has certain tilt angle a, and channel is in combustible gas sleeve, thus combustible gas and
Lean gas has axial, tangentially and radially speed simultaneously, and channel is evenly distributed in around central tube and makes lean gas and can
Combustion gas can be good at being mixed to form rotating flow, and flow rotation forms high temperature recirculation zone, improves the stability of flame, avoid fire
The vigorous combustion of flame, it is suppressed that thermal NOxGeneration.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (7)
1. a kind of low NO for utilizing lean gas/flammable cyclonic current to be mixed and burned, which is characterized in that including central tube (1),
Periphery is successively arranged combustible gas sleeve (2) and air sleeve (3), and central tube (1) is closed at one end, central tube (1) and flammable air-casing
It is connected between cylinder (2) by fin guide plate, central tube (1) closed one end, corresponding combustible gas sleeve (2) and air sleeve (3)
It is open ports.
2. the low NO being mixed and burned as described in claim 1 using lean gas/flammable cyclonic current, which is characterized in that center
(1), combustible gas sleeve (2) and air sleeve (3) central axis is managed to be overlapped.
3. the low NO being mixed and burned as claimed in claim 1 or 2 using lean gas/flammable cyclonic current, which is characterized in that in
The diameter ratio of heart pipe (1), combustible gas sleeve (2) and air sleeve (3) is 1:(2-3): (2.5-4).
4. the low NO being mixed and burned as claimed in claim 3 using lean gas/flammable cyclonic current, which is characterized in that fin
Guide plate is divided into the side fin guide plate (5) that 2 are parallel to each other and 1 bottom surface fin guide plate (6), wherein 2 side fin guide plates
(5) lean gas exit passageway (4) are formed between.
5. the low NO being mixed and burned as claimed in claim 4 using lean gas/flammable cyclonic current, which is characterized in that 2 sides
Face fin guide plate (5) and the lateral surface of central tube (1) have inclination angle a, and wherein the range of a is 20 ° -60 °.
6. the low NO being mixed and burned as claimed in claim 5 using lean gas/flammable cyclonic current, which is characterized in that lean gas
Exit passageway (4) is distributed with 4-6 around central tube (1).
7. the low NO being mixed and burned as claimed in claim 6 using lean gas/flammable cyclonic current, which is characterized in that lean gas
Exit passageway (4) is evenly around between central tube (1) and combustible gas sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629902.6A CN109737401B (en) | 2018-12-28 | 2018-12-28 | Low-nitrogen combustor utilizing lean gas/combustible gas cyclone mixed combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629902.6A CN109737401B (en) | 2018-12-28 | 2018-12-28 | Low-nitrogen combustor utilizing lean gas/combustible gas cyclone mixed combustion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109737401A true CN109737401A (en) | 2019-05-10 |
| CN109737401B CN109737401B (en) | 2020-11-10 |
Family
ID=66362052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811629902.6A Active CN109737401B (en) | 2018-12-28 | 2018-12-28 | Low-nitrogen combustor utilizing lean gas/combustible gas cyclone mixed combustion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109737401B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224490A (en) * | 1996-07-05 | 1999-07-28 | 勒舍有限公司 | Burner |
| CN102095201A (en) * | 2009-12-11 | 2011-06-15 | 财团法人工业技术研究院 | Composite combustion device |
| CN102425793A (en) * | 2011-10-19 | 2012-04-25 | 中国科学院广州能源研究所 | Self-backheating swirling burner for fuel gas with low heat value |
| CN203595143U (en) * | 2013-12-13 | 2014-05-14 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Double-fuel combustion chamber jet nozzle of combustion gas turbine |
| CN204665354U (en) * | 2015-03-26 | 2015-09-23 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | A kind of fuel gas nozzle |
| CN106482097A (en) * | 2015-08-26 | 2017-03-08 | 清华大学 | The partly-premixed low nitrogen burner of percussion flow |
| CN108397772A (en) * | 2018-05-07 | 2018-08-14 | 上海全颉环境设备有限公司 | A kind of combustion head |
-
2018
- 2018-12-28 CN CN201811629902.6A patent/CN109737401B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224490A (en) * | 1996-07-05 | 1999-07-28 | 勒舍有限公司 | Burner |
| CN102095201A (en) * | 2009-12-11 | 2011-06-15 | 财团法人工业技术研究院 | Composite combustion device |
| CN102425793A (en) * | 2011-10-19 | 2012-04-25 | 中国科学院广州能源研究所 | Self-backheating swirling burner for fuel gas with low heat value |
| CN203595143U (en) * | 2013-12-13 | 2014-05-14 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Double-fuel combustion chamber jet nozzle of combustion gas turbine |
| CN204665354U (en) * | 2015-03-26 | 2015-09-23 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | A kind of fuel gas nozzle |
| CN106482097A (en) * | 2015-08-26 | 2017-03-08 | 清华大学 | The partly-premixed low nitrogen burner of percussion flow |
| CN108397772A (en) * | 2018-05-07 | 2018-08-14 | 上海全颉环境设备有限公司 | A kind of combustion head |
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| Publication number | Publication date |
|---|---|
| CN109737401B (en) | 2020-11-10 |
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