CN206398715U - A kind of low nitrogen burning head - Google Patents
A kind of low nitrogen burning head Download PDFInfo
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- CN206398715U CN206398715U CN201621479057.5U CN201621479057U CN206398715U CN 206398715 U CN206398715 U CN 206398715U CN 201621479057 U CN201621479057 U CN 201621479057U CN 206398715 U CN206398715 U CN 206398715U
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- combustion gas
- secondary fuel
- air
- dispersion pipe
- fuel dispersion
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Abstract
The utility model provides a kind of low nitrogen burning head, including gas distributor and air swirl disk, form combustion gas distribution cavity and air duct respectively on gas distributor, some ring air duct distributions and the combustion gas ingress pipe communicated with combustion gas distribution cavity are fixedly connected with the gas distributor, combustion gas ingress pipe is connected with secondary fuel dispersion pipe communicates respectively, and the exhaust gas nozzle of oblique branched structure is formed on secondary fuel dispersion pipe；Secondary fuel dispersion pipe annular space cyclone flow table is distributed, and air duct is communicated with air swirl disk.The utility model is used cooperatively with portfire, burned flame forms some clusters on air swirl disk circumference, the temperature of scattered flame is not readily reachable by the temperature needed for nitrogen reacts with oxygen, simultaneously, oxygen in air is adequately used for the burning of combustion gas, can block the oxygen element produced needed for nitrogen oxides, therefore, not only fuel factor is relatively good, and can significantly decrease the generation and discharge of nitrogen oxides.
Description
Technical field
The utility model is related to gas burner technical field, is fired more particularly, to the combustion gas that industrial steam boiler is used
A kind of low nitrogen burning head in burner.
Background technology
The gas burner used for industrial steam boiler, it is (following that it can produce nitrogen oxides in use
Abbreviation NOx) discharge.As increasingly serious haze and the number of days accounting of severe air pollution are on the rise so that various regions government
The environmental protection policy of requirements at the higher level is put into effect, wherein there is clear and definite index request, the NOx content in the exhaust emissions of gas burner is not
Some numerical value must be exceeded.For example, the new environmental protection policy that Beijing will be enabled in April, 2017, provides this numerical value no more than
40mg/ steams ton；And existing boiler exhaust gas discharge index, all it is generally that, according to former environmental protection policy, standard is that 80mg/ steams
Ton.
Combustion head in existing gas burner, its flame sprayed when in use is " pulled " length, and gos deep into boiler
Portion is heated, the different parts of flame, is referred to as the first combustion zone, the second combustion zone, the 3rd combustion zone.Wherein, first
The flame of combustion zone starts convergence in the second combustion zone, almost converged in the 3rd combustion zone into the annular shape opened outside
A bit, herein because in flame thermal collecting, temperature is very high, close to nitrogen and the critical reaction temperature of oxygen, the nitrogen in air is made
React generation NOx probability of gas and the remaining oxygen of burning is greatly increased, therefore, the NOx content in its tail gas discharged
It is high.Current external ripe such product, emissions data probably steams ton in 80~120mg/.At present, gas burner is made
Discharge reaches the normal requirement of environmental protection, and a kind of approach is the low nitrogen gas burner that buying is new, energy is up to standard, i.e., to whole combustion
Air burner is renewed；Another approach, is that gas burner is undergone technological transformation, one of core component of transformation, just
It is the combustion head inside gas burner.
Utility model content
The technical problems to be solved in the utility model is：There is provided a kind of low nitrogen burning for the problem of existing for prior art
Head, reduces the generation and discharge of its nitrogen oxides in use.
The technical problems to be solved in the utility model is realized using following technical scheme：A kind of low nitrogen burning head, including
Combustion gas distribution cavity and air duct, the combustion gas are formed on gas distributor and air swirl disk, the gas distributor respectively
Some ring air duct distributions and the combustion gas ingress pipe communicated with combustion gas distribution cavity are fixedly connected with distributor, the combustion gas is led
Enter pipe and be connected with secondary fuel dispersion pipe respectively to communicate, the gas injection of oblique branched structure is formed on secondary fuel dispersion pipe
Pipe；The secondary fuel dispersion pipe annular space cyclone flow table distribution, the air duct is communicated with air swirl disk.
Preferably, pivot bush unit structure is formed between described combustion gas ingress pipe and corresponding secondary fuel dispersion pipe.
Preferably, jackscrew is set between described combustion gas ingress pipe and corresponding secondary fuel dispersion pipe.
Preferably, some described secondary fuel dispersion pipe annular space cyclone flow tables are uniformly distributed.
Preferably, the air swirl disk is connected by formation activity between connection lug and secondary fuel dispersion pipe thereon
Binding structure.
Preferably, jackscrew is set between the connection lug and secondary fuel dispersion pipe on the air swirl disk.
Preferably, the open seam communicated with air duct is opened up on described air swirl disk.
Compared with prior art, the beneficial effects of the utility model are：The utility model is used cooperatively with portfire, wherein
Exhaust gas nozzle be located at portfire inner chamber in, when combustion gas enter combustion gas distribution cavity after, combustion gas by combustion gas ingress pipe enter it is secondary
Fuel dispersion pipe, and sprayed from exhaust gas nozzle；The combustion gas of ejection is encountered after portfire inwall, to portfire inner reflection, and empty
Gas reaches air swirl disk in the case where air blower strength advertises effect by the air duct on gas distributor, passes through air swirl
Disk forces the oblique outer diverging of air, and the combustion gas of reflection is mixed with the air dissipated, in favor of fully burning, moreover, burning
Flame form some clusters on air swirl disk circumference, therefore, fuel factor is relatively good, and the temperature of scattered flame is not easy
Reach that nitrogen and oxygen react required temperature, meanwhile, the oxygen in air is adequately used for the burning of combustion gas, therefore not
Excessive oxygen is had, therefore, the oxygen element produced needed for nitrogen oxides has been blocked, has been circulated benignly by both, it becomes possible to make
The generation of nitrogen oxides is significantly reduced, so as to significantly decrease the discharge of nitrogen oxides.
Brief description of the drawings
Fig. 1 is a kind of 3D structural maps of low nitrogen burning head of the utility model.
Fig. 2 is a kind of front view of low nitrogen burning head of the utility model.
Fig. 3 is A-A in Fig. 2 to sectional view.
Component token name claims in figure：1- exhaust gas nozzles, 2- secondary fuel dispersion pipes, 3- jackscrews, 4- combustion gas ingress pipes, 5- combustions
Qi leel orchestration, 6- air swirl disks, 7- portfires, 51- combustion gas distribution cavities, 52- air ducts, 61- open seams, 62- connections are convex
Ear.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with the accompanying drawings and specifically
The utility model is described in detail embodiment.It should be appreciated that specific embodiment described herein is only to explain this
Utility model, is not used to limit the utility model.
Low nitrogen burning head as shown in Figure 1, Figure 2, Figure 3 shows, including gas distributor 5 and air swirl disk 6, described combustion gas
Combustion gas distribution cavity 51 and air duct 52 are formed on distributor 5 respectively, is fixed and connected with welding manner on the one end of gas distributor 5
Connect the combustion gas ingress pipe 4 that some ring air ducts 52 are distributed and communicated with combustion gas distribution cavity 51, each combustion gas ingress pipe 4
It is connected and communicates with independent secondary fuel dispersion pipe 2 respectively, the annular space cyclone flow table 6 of secondary fuel dispersion pipe 2 is distributed, described
Air duct 52 communicated with air swirl disk 6.Preferably, the combustion gas ingress pipe 4 is plugged into the inner chamber of secondary fuel dispersion pipe 2
In, and the formation pivot bush unit structure between corresponding secondary fuel dispersion pipe 2 so that secondary fuel dispersion pipe 2 can be with combustion
Formed and be slidably matched between gas ingress pipe 4, to facilitate secondary fuel dispersion pipe 2 relative to the scalable adjustment of combustion gas ingress pipe 4.
The exhaust gas nozzle 1 of oblique branched structure is formed on secondary fuel dispersion pipe 2, i.e., described exhaust gas nozzle 1 with it is secondary
Fuel dispersion pipe 2 forms Y-shaped structure, and both inner chambers are communicated.Preferably, can be in combustion gas ingress pipe 4 and corresponding secondary combustion
Expect to set jackscrew 3 between dispersion pipe 2, unclamp jackscrew 3, secondary fuel dispersion pipe 2 is rotated relative to combustion gas ingress pipe 4, you can
Adjust the spray angle of exhaust gas nozzle 1；After being adjusted in place, lock jackscrew 3, you can realize secondary fuel dispersion pipe 2 relative to
The stationary positioned of combustion gas ingress pipe 4.
The position adjustment of air swirl disk 6 for convenience, can make air swirl disk 6 by connection lug 62 thereon with
Movable connection structure is formed between secondary fuel dispersion pipe 2, described secondary fuel dispersion pipe 2 is through connection lug 62 and with connecting
Connect to be formed between lug 62 and be slidably matched, so as to meet flexible tune of the air swirl disk 6 relative to secondary fuel dispersion pipe 2
Whole position needs.Preferably, set between connection lug 62 and secondary fuel dispersion pipe 2 that can also be on air swirl disk 6
Jackscrew 3；When unclamp jackscrew 3 after, you can make secondary fuel dispersion pipe 2 relative to connection lug 62 rotate so that adjust with this two
The spray angle for the exhaust gas nozzle 1 that secondary fuel dispersion pipe 2 is connected with each other；After being adjusted in place, jackscrew 3 is locked, you can make secondary
Fuel dispersion pipe 2 is maintained at stationary positioned position relative to connection lug 62.
Low nitrogen burning head of the present utility model can apply on the gas burner that industrial steam boiler is used, and such as scheme
2nd, shown in Fig. 3, it is used cooperatively with portfire 7, generally, and described portfire 7 is mounted on boiler flange.Described combustion
Gas blowout pipe 1 is located in the inner chamber of portfire 7, and after combustion gas enters the combustion gas distribution cavity 51 on gas distributor 5, combustion gas passes through combustion
Gas ingress pipe 4 enters in secondary fuel dispersion pipe 2, is finally sprayed from exhaust gas nozzle 1；When the combustion gas that exhaust gas nozzle 1 sprays is encountered
After the inwall of portfire 7, to the inner reflection of portfire 7；Air is advertised under effect in the strength of air blower, passes through gas distributor 5
On air duct 52 reach air swirl disk 6, due to being provided with some blade constructions of oblique welding in the middle of air swirl disk 6,
The oblique outer diverging of air is forced, the combustion gas of foregoing reflection is mutually mixed with the air dissipated, in favor of fully burning, moreover, combustion
The flame of burning forms some clusters on the circumference of air swirl disk 6, and fuel factor is relatively good, and the temperature of scattered flame is not easy to reach
React required temperature to nitrogen and oxygen, meanwhile, the oxygen in air is adequately used for the burning of combustion gas, therefore will not
There is excessive oxygen, therefore, blocked the oxygen element produced needed for nitrogen oxides, circulated benignly by both, it becomes possible to make nitrogen
The generation of oxide is significantly reduced, and so as to significantly decrease the discharge of nitrogen oxides, and lifts the thermal efficiency of boiler.
Further, by adjusting the angle and distance of stretch out and draw back of secondary fuel dispersion pipe 2, by adjusting air swirl disk 6
Distance of stretch out and draw back, the distribution diameter of combustion gas and air mixing point can also be controlled, thus control flame scattered intensity (heat
Effect), preferably to be matched with boiler.Preferably, some annular space cyclone flow tables 6 of secondary fuel dispersion pipe 2 can be made uniform
Distribution, so that combustion gas is throughout mixed more fully with air, and is disperseed evenly, so that overall fuel factor is higher.When logical
Cross burning to consume after combustion gas and air, vacuum effect can be produced, so that flue gas produced during burning is by vacuum effect
Absorption, is forced to circulate on the spot, as shown in Figure 3.Preferably, it can also open up and be communicated with air duct 52 on air swirl disk 6
Annular opening seam 61, as shown in Figure 1, Figure 2, Figure 3 shows, by open seam 61, air can flow out a little, and with foregoing circulation
Flue gas is mixed, and the oxygen in CO and air in flue gas is further burnt and is consumed, be create a further reduction pot
The disposal of pollutants level of stove.
Preferred embodiment of the present utility model is the foregoing is only, not to limit the utility model, should be referred to
Go out, all any modifications, equivalent substitutions and improvements made within spirit of the present utility model and principle etc. all should be included
Within protection domain of the present utility model.
Claims (7)
1. on a kind of low nitrogen burning head, including gas distributor (5) and air swirl disk (6), the gas distributor (5) respectively
Form combustion gas distribution cavity (51) and air duct (52), it is characterised in that：Some are fixedly connected with the gas distributor (5)
The combustion gas ingress pipe (4) that ring air duct (52) is distributed and communicated with combustion gas distribution cavity (51), the combustion gas ingress pipe (4) is respectively
It is connected and communicates with secondary fuel dispersion pipe (2), the exhaust gas nozzle of oblique branched structure is formed on secondary fuel dispersion pipe (2)
(1)；Secondary fuel dispersion pipe (2) annular space cyclone flow table (6) distribution, the air duct (52) and air swirl disk (6)
Communicate.
2. a kind of low nitrogen burning head according to claim 1, it is characterised in that：Described combustion gas ingress pipe (4) with it is corresponding
Secondary fuel dispersion pipe (2) between formed pivot bush unit structure.
3. a kind of low nitrogen burning head according to claim 2, it is characterised in that：Described combustion gas ingress pipe (4) with it is corresponding
Secondary fuel dispersion pipe (2) between set jackscrew (3).
4. a kind of low nitrogen burning head according to claim any one of 1-3, it is characterised in that：Some described secondary combustions
Material dispersion pipe (2) annular space cyclone flow table (6) is uniformly distributed.
5. a kind of low nitrogen burning head according to claim any one of 1-3, it is characterised in that：The air swirl disk (6)
By forming movable connection structure between connection lug (62) and secondary fuel dispersion pipe (2) thereon.
6. a kind of low nitrogen burning head according to claim 5, it is characterised in that：Connection on the air swirl disk (6)
Jackscrew (3) is set between lug (62) and secondary fuel dispersion pipe (2).
7. a kind of low nitrogen burning head according to claim 5, it is characterised in that：Opened up on described air swirl disk (6)
The open seam (61) communicated with air duct (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621479057.5U CN206398715U (en) | 2016-12-30 | 2016-12-30 | A kind of low nitrogen burning head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621479057.5U CN206398715U (en) | 2016-12-30 | 2016-12-30 | A kind of low nitrogen burning head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206398715U true CN206398715U (en) | 2017-08-11 |
Family
ID=59517541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621479057.5U Active CN206398715U (en) | 2016-12-30 | 2016-12-30 | A kind of low nitrogen burning head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206398715U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151019A (en) * | 2018-01-26 | 2018-06-12 | 北京水木星源环保科技有限公司 | A kind of burner |
| CN112413630A (en) * | 2020-11-06 | 2021-02-26 | 西安力元炉窑自动化设备有限公司 | Biomass burner nozzle layout for kiln |
| CN114183754A (en) * | 2020-09-14 | 2022-03-15 | 意大利利雅路股份有限公司 | Burner head of burner |
-
2016
- 2016-12-30 CN CN201621479057.5U patent/CN206398715U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151019A (en) * | 2018-01-26 | 2018-06-12 | 北京水木星源环保科技有限公司 | A kind of burner |
| CN108151019B (en) * | 2018-01-26 | 2023-08-11 | 北京水木星源环保科技有限公司 | Burner |
| CN114183754A (en) * | 2020-09-14 | 2022-03-15 | 意大利利雅路股份有限公司 | Burner head of burner |
| US11841137B2 (en) | 2020-09-14 | 2023-12-12 | Riello, S.P.A. | Combustion head for a burner |
| CN114183754B (en) * | 2020-09-14 | 2024-04-26 | 意大利利雅路股份有限公司 | Burner head of burner |
| CN112413630A (en) * | 2020-11-06 | 2021-02-26 | 西安力元炉窑自动化设备有限公司 | Biomass burner nozzle layout for kiln |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 610207 Chengdu China (Sichuan) Free Trade Pilot Zone, Chengdu Shuangliu District, Sichuan Province Patentee after: Chengdu Zhonghuan Flow Control Equipment Co., Ltd. Address before: 610207, No. two, section two, airport road 1488, Southwest Airlines Development Zone, Chengdu, Sichuan, Shuangliu County Patentee before: Chengdu Zhonghuan Flow Control Equipment Co., Ltd. |
|
| CP02 | Change in the address of a patent holder |