CN206112921U - Multistage air distribution's low NOx burner - Google Patents
Multistage air distribution's low NOx burner Download PDFInfo
- Publication number
- CN206112921U CN206112921U CN201620409020.9U CN201620409020U CN206112921U CN 206112921 U CN206112921 U CN 206112921U CN 201620409020 U CN201620409020 U CN 201620409020U CN 206112921 U CN206112921 U CN 206112921U
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Abstract
The utility model discloses a multistage air distribution's low NOx burner. This low NOx burner includes combustor body and combustion head shell body, and inside from interior to exterior is equipped with ignition fuel gas passage, main gas chamber, wind passageway, tertiary air passageway and a secondary air channel in proper order at the cavity of combustor body, the lower part of combustor body is equipped with a wind import, overgrate air import and tertiary air import, and main gas chamber's the end of giving vent to anger is equipped with gas sprayer, sets up a conical wind plate of distributor in gas sprayer's the outside, and secondary air channel's air outlet is equipped with the overgrate air injection pipe, and the air outlet of tertiary air passageway is equipped with tertiary air swirler, main gas chamber's front end top is equipped with main gas import. The utility model discloses in, utilize the fractional combustion of gas and air, reduce the regional temperature of flame kernel, reduced NOx's formation, realize the deep or light distribution of gas, avoid environmental pollution.
Description
Technical field
The utility model is related to low-NO_x combustion technology field, more particularly to a kind of low NO of multi-staged air distribution.
Background technology
Burner is the main building block of industrial furnace combustion apparatus, and the NOx generated in combustion process is to cause environment
One of principal element of pollution, the height of NOx generation amount becomes one of important indicator for weighing burner combustion performance.
In existing industrial technology, the generation of NOx mainly has three kinds：Fuel type NOx, thermal NO x and Quick-type
NOx.The NOx generated during gas fuel combustion is mainly fuel type NOx and thermal NO x, therefore, for burning gases combustion
Expect that control NOx generates the mainly generation of control thermal NO x and fuel type NOx or reduces the NOx for having generated.Temperature is to heat
The generation of power type NOx has decisive role, and different burners are distributed in the different calorific intensity of the indoor generation of burning, different
Calorific intensity distribution produces different Temperature Distributions, therefore designing a novel burner makes it to meet fuel fire and burning
Need can reduce NOx again to become the key for realizing low NOx drainage.
Existing industrial gas furnace is to adopt single stage burner, due to this burner structure it is simple, combustion gas with it is empty
The mixability of gas is low, not only there is a problem that using energy source is insufficient, and the NOx of high level can be produced in burning
Discharge, it is impossible to meet the requirement of related environmental protection standard.
The low NOx combusting technology for using at present mainly has three kinds：The first is air staged combustion technology, and it makes combustion-supporting sky
Gas is shunted to set up the first combustion zone of oxygen deprivation, so as to reduce the generation of NOx, is drawn remaining partial air in the second combustion zone
Enter, so as to complete whole combustion process；Second is fuel-staged combustion technology, and combustion air is once fully incorporated the first burning
Area, but in the first combustion zone only for answering part of fuel, residual fuel to be introduced into the second combustion zone, superfluous using the first combustion zone
Oxygen is burnt；The third is flue gas recirculation combustion technology, and the low-pressure area produced using combustion air or fuel gas stream is promoted
In close to inert smoke backflow to combustion-gas flow, reduce partial combustion temperature and form local reduction atmosphere, so as to subtract
The generation of few NOx.It is low with air mixability all to there is combustion gas in existing three kinds of low NOx combusting technologies, wastes the energy, easily produces
Raw localized hyperthermia and/or the problem of combustion instability, thus designing a kind of burner can be fired using combustion gas and the classification of air
Burn, reduce the temperature in flame kernel region, it is significant so as to reduce the burner of NOx generations.
Utility model content
The utility model provides a kind of low NO of multi-staged air distribution, overcomes existing burner NOx emission
Amount is big, it is impossible to realize the fractional combustion of combustion gas and air, easily produces the problem of localized hyperthermia and/or combustion instability.
The purpose of this utility model is achieved through the following technical solutions：
A kind of low NO of multi-staged air distribution, including burner body and combustion head shell body, it is characterised in that：
Igniting blast tube, First air passage, secondary air channel are sequentially provided with from the inside to the outside in the inside cavity of the burner body
With outer shroud blast tube, wherein the inlet end of the igniting blast tube is provided with center fire fuel gas inlet, blast tube of lighting a fire
Outlet side be provided with center fire air gun；The bottom of the burner body is provided with a wind inlet and secondary air inlet, described
First air passage and secondary air channel are connected respectively with a wind inlet and secondary air inlet, and the igniting blast tube is arranged on
In First air passage, the First air distribution plate of taper, the First air distribution plate are set in the outside of the center fire air gun
Surface is provided with aperture from little to the First air air outlet being arranged in order greatly, and First air forms multistage wind spray at First air distribution plate
Go out, and with the combustion gas mixing of center fire air gun, the outlet air end of the secondary air channel is provided with Secondary Air cyclone, and Secondary Air leads to
Cross Secondary Air cyclone and form Whirl deposite tank；The side configuration compression ring distributor box of the burner body, the compression ring distributor box
Top opens up main fuel gas inlet, and the inlet end of outer shroud blast tube is connected with compression ring distributor box, the outlet side of outer shroud blast tube
Outer shroud gas gun is provided with, outer shroud gas spray head is installed in the outlet side of the outer shroud gas gun.
Aerofoil adjusting means is provided with the First air passage and secondary air channel.
The outer shroud gas spray head includes the first shower nozzle for spraying in the horizontal direction and sprays towards central area along 45 degree of angles
The second shower nozzle penetrated.
Stretch into inside burner hearth the front end of the combustion head shell body.
Compared with prior art, the utility model at least has advantages below：
By above-mentioned the technical solution of the utility model, the low NO is mainly by fuel staging gun system, air
The compositions such as classification cyclone system, air distribution body.Main combustion gas enters distributor box, and through distributor box each gas injection is uniformly distributed to
Rifle, the shower nozzle of gas gun is into two kinds of angular distributions, and a kind of angle horizontal-jet, another angle is at 45 ° towards center
Domain is sprayed, and this angle mainly ensures the combustion stability of main flame zone, the quantity of concrete every kind of angle shower nozzle according to power come
It is determined that；Independently of main fuel gas inlet, flow accounts for 10% or so of general power flow to center air gun fuel source.Combustion air passes through
Air inlet adjustment baffle plate is entered, and is divided into multistage wind, respectively enters centre wind cavity and cyclone etc., is ejected from combustion head
Mix with combustion gas diffusion.First air air quantity accounts for 20% of total blast volume or so, this benefit：A, due to air flow rate proportioning it is big, therefore
Ensure that the burning of center rifle combustion gas completely, define an oxygen-rich area, and due to the structure shape of First air distribution plate
Formula, additionally it is possible to ensure the stable burning in flame of centre region；B, because air is more, the temperature in flame of centre region can be reduced,
Reduce the generation of NOx；C, with reference to Secondary Air and outer shroud gas gun, realize bias combustion, reduce the generation of NOx.
Description of the drawings
Fig. 1 is a kind of structural representation of the low NO of multi-staged air distribution that the utility model embodiment is provided；
Fig. 2 is the distribution schematic diagram of outer shroud gas spray head in the utility model embodiment.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model, the technical scheme in the utility model is carried out clearly and completely
Description, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than the embodiment of whole.Base
Embodiment in the utility model, the institute that those of ordinary skill in the art are obtained under the premise of creative work is not made
There is other embodiment, belong to the scope of the utility model protection.
As shown in figure 1, a kind of low NO of multi-staged air distribution proposed for the utility model embodiment, including combustion
Burner body 1 and combustion head shell body 16, in the inside cavity of burner body 1 igniting blast tube is sequentially provided with from the inside to the outside
2nd, First air passage 3, secondary air channel 4 and outer shroud blast tube 5, wherein the inlet end of igniting blast tube 2 is provided with central point
Fiery fuel gas inlet 6, the outlet side of blast tube 2 of lighting a fire is provided with center fire air gun 7；The bottom of burner body 1 is provided with once
Wind inlet 8 and secondary air inlet 9, First air passage 3 and secondary air channel 4 connect respectively with a wind inlet 8 and secondary air inlet 9
Logical, igniting blast tube 2 is arranged in First air passage 3, and in the outside of center fire air gun 7 the First air distribution of taper is arranged
Disk 10, the surface of First air distribution plate 10 is provided with aperture from little to the First air air outlet being arranged in order greatly, and First air is in First air
Form multistage wind at distribution plate 10 to spray, and with the combustion gas mixing of center fire air gun 7, the outlet air end of secondary air channel 4 is provided with
Secondary Air cyclone 11, Secondary Air forms Whirl deposite tank by Secondary Air cyclone 11；The side configuration compression ring point of burner body 1
With case 12, the top of compression ring distributor box 12 opens up main fuel gas inlet 13, inlet end and the compression ring distributor box 12 of outer shroud blast tube 5
Connection, the outlet side of outer shroud blast tube 5 is provided with outer shroud gas gun, and outer shroud gas injection is installed in the outlet side of outer shroud gas gun
15.
Further, it is provided with aerofoil adjusting means in First air passage 3 and secondary air channel 4.
Outer shroud gas spray head 15 includes the first shower nozzle for spraying in the horizontal direction and sprays towards central area along 45 degree of angles
The second shower nozzle.
Preferably, the front end of combustion head shell body 16 is stretched into inside burner hearth.
It is as follows to the function declaration of the above-mentioned each structure of the present invention below in conjunction with the accompanying drawings：
Center fire air gun 7：Center air gun in fuel staging, for producing flame of centre, ensures that burner stably fires
Burn, and play the stable purpose of flame of centre, function is altar lamp.
Compression ring distributor box 12：Fuel adopts fractional combustion, it is therefore desirable to multigroup spray gun, and this device is to ensure each combustion gas
Rifle can be evenly distributed, and main fuel gas inlet is the import of burner compression ring distributor box, is the passage that pipe gas enter distributor box.
Outer shroud gas gun 14：Fuel enters each fuel gas injection rifle, the arrangement of outer shroud gas gun after distributor box
As shown in Fig. 2 quantity according to actual power arrange, in order to ensure main flame zone can flameholding, the shower nozzle direction of spray gun has
Part is directed towards the region of flame of centre.
Burner body 1 (air distribution body)：For the shell body of burner, be whole burner with wind inlet, import is divided into
First air and Secondary Air, with aerofoil adjusting means.
First air distribution plate 10：For the passage of burner head First air, First air can be divided into multistage by this part, point
The penetrating of level, the combustion gas mixing with center air gun, the structure of this part ensure that stablizing for flame of centre region, and should
Part carries cyclonic action, and modular construction can provide a flame-stabilizing area, serves the fire that is sufficiently mixed with combustion gas and stably burns
The effect of flame.
Secondary Air cyclone 11：For burner head Secondary Air swirl vane, the device is by secondary air separating into multistage, one-level
For direct current wind, enter from around outer shroud gas gun；Two grades is Whirl deposite tank, with combustion gas mixing, burning after cyclone.
Combustion head shell body 16：Jet for whole combustion head constrains housing, and the housing is stretching into furnace interior, protecting pipette tips
And cyclone, improve the intensity of whole flame.
Compared with prior art, the utility model at least has advantages below：
By above-mentioned the technical solution of the utility model, the low NO is mainly by fuel staging gun system, air
The compositions such as classification cyclone system, air distribution body.Main combustion gas enters distributor box, and through distributor box each gas injection is uniformly distributed to
Rifle, the shower nozzle of gas gun is into two kinds of angular distributions, and a kind of angle horizontal-jet, another angle is at 45 ° towards center
Domain is sprayed, and this angle mainly ensures the combustion stability of main flame zone, the quantity of concrete every kind of angle shower nozzle according to power come
It is determined that；Independently of main fuel gas inlet, flow accounts for 10% or so of general power flow to center air gun fuel source.Combustion air passes through
Air inlet adjustment baffle plate is entered, and is divided into multistage wind, respectively enters centre wind cavity and cyclone etc., is ejected from combustion head
Mix with combustion gas diffusion.First air air quantity accounts for 20% of total blast volume or so, this benefit：A, due to air flow rate proportioning it is big, therefore
Ensure that the burning of center rifle combustion gas completely, define an oxygen-rich area, and due to the structure shape of First air distribution plate
Formula, additionally it is possible to ensure the stable burning in flame of centre region；B, because air is more, the temperature in flame of centre region can be reduced,
Reduce the generation of NOx；C, with reference to Secondary Air and outer shroud gas gun, realize bias combustion, reduce the generation of NOx.
The above, only the utility model preferably specific embodiment, but protection domain of the present utility model is not
This is confined to, any those familiar with the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, all should cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should
It is defined by the protection domain of claims.
Claims (4)
1. the low NO that a kind of multi-staged air is distributed, including burner body and combustion head shell body, it is characterised in that：
The inside cavity of the burner body be sequentially provided with from the inside to the outside igniting blast tube, First air passage, secondary air channel and
Outer shroud blast tube, wherein the inlet end of the igniting blast tube is provided with center fire fuel gas inlet, blast tube of lighting a fire
Outlet side is provided with center fire air gun；The bottom of the burner body is provided with a wind inlet and secondary air inlet, and described one
Secondary wind passage and secondary air channel are connected respectively with a wind inlet and secondary air inlet, and the igniting blast tube is arranged on one
In secondary wind passage, the First air distribution plate of taper is set in the outside of the center fire air gun, the First air distributes dish cart
Face is provided with aperture from little to the First air air outlet being arranged in order greatly, and First air forms multistage wind spray at First air distribution plate
Go out, and with the combustion gas mixing of center fire air gun, the outlet air end of the secondary air channel is provided with Secondary Air cyclone, and Secondary Air leads to
Cross Secondary Air cyclone and form Whirl deposite tank；The side configuration compression ring distributor box of the burner body, the compression ring distributor box
Top opens up main fuel gas inlet, and the inlet end of outer shroud blast tube is connected with compression ring distributor box, the outlet side of outer shroud blast tube
Outer shroud gas gun is provided with, outer shroud gas spray head is installed in the outlet side of the outer shroud gas gun.
2. the low NO that multi-staged air as claimed in claim 1 is distributed, it is characterised in that：The First air passage and two
Aerofoil adjusting means is provided with secondary wind passage.
3. the low NO that multi-staged air as claimed in claim 1 is distributed, it is characterised in that：The outer shroud gas spray head bag
Include the first shower nozzle for spraying in the horizontal direction and the second shower nozzle sprayed towards central area along 45 degree of angles.
4. the low NO that multi-staged air as claimed in claim 1 is distributed, it is characterised in that：The combustion head shell body
Stretch into inside burner hearth front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620409020.9U CN206112921U (en) | 2016-05-06 | 2016-05-06 | Multistage air distribution's low NOx burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620409020.9U CN206112921U (en) | 2016-05-06 | 2016-05-06 | Multistage air distribution's low NOx burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206112921U true CN206112921U (en) | 2017-04-19 |
Family
ID=58509009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620409020.9U Expired - Fee Related CN206112921U (en) | 2016-05-06 | 2016-05-06 | Multistage air distribution's low NOx burner |
Country Status (1)
| Country | Link |
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| CN (1) | CN206112921U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218602A (en) * | 2017-07-19 | 2017-09-29 | 上海华之邦科技股份有限公司 | A kind of low heat value/low-pressure gas burner |
| CN108758629A (en) * | 2018-07-10 | 2018-11-06 | 东方电气集团东方锅炉股份有限公司 | low nitrogen oxide gas burner |
| CN109631036A (en) * | 2019-01-14 | 2019-04-16 | 唐山亿昌热能科技有限公司 | The combustion method and matched combustion head and burner of a kind of ultralow nitrogen oxides |
| CN109764334A (en) * | 2019-01-24 | 2019-05-17 | 东方电气集团东方锅炉股份有限公司 | Low Nox coke oven gas burner |
| CN110440258A (en) * | 2019-08-19 | 2019-11-12 | 河北德奥环保科技有限公司 | A kind of ultralow nitrogen Split type combustion device and burning boiler |
| CN110553267A (en) * | 2019-08-29 | 2019-12-10 | 东方电气集团东方锅炉股份有限公司 | multi-fuel low-nitrogen combustor |
| CN110645574A (en) * | 2019-09-25 | 2020-01-03 | 西安航天源动力工程有限公司 | Fuel pipe and combustor |
| CN111780094A (en) * | 2020-07-17 | 2020-10-16 | 北京泷涛环境科技有限公司 | Deviating equivalence ratio ultra-low nitrogen combustion device and combustion method |
| CN111810951A (en) * | 2020-07-17 | 2020-10-23 | 北京泷涛环境科技有限公司 | Environment-friendly combustor with ultralow nitrogen oxide emission |
| CN115468163A (en) * | 2022-09-26 | 2022-12-13 | 山东大学 | Low-nitrogen combustor for ammonia fuel and working method thereof |
| WO2023216529A1 (en) * | 2022-05-07 | 2023-11-16 | 北京航天石化技术装备工程有限公司 | Gas-air double-stage ultralow-nitrogen bottom combustor and combustion method therefor |
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2016
- 2016-05-06 CN CN201620409020.9U patent/CN206112921U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218602A (en) * | 2017-07-19 | 2017-09-29 | 上海华之邦科技股份有限公司 | A kind of low heat value/low-pressure gas burner |
| CN108758629A (en) * | 2018-07-10 | 2018-11-06 | 东方电气集团东方锅炉股份有限公司 | low nitrogen oxide gas burner |
| CN108758629B (en) * | 2018-07-10 | 2024-04-12 | 东方电气集团东方锅炉股份有限公司 | Low-oxynitride gas burner |
| CN109631036B (en) * | 2019-01-14 | 2023-08-25 | 唐山亿昌热能科技有限公司 | Combustion method of ultralow nitrogen oxides, matched combustion head and combustion device |
| CN109631036A (en) * | 2019-01-14 | 2019-04-16 | 唐山亿昌热能科技有限公司 | The combustion method and matched combustion head and burner of a kind of ultralow nitrogen oxides |
| CN109764334A (en) * | 2019-01-24 | 2019-05-17 | 东方电气集团东方锅炉股份有限公司 | Low Nox coke oven gas burner |
| CN110440258A (en) * | 2019-08-19 | 2019-11-12 | 河北德奥环保科技有限公司 | A kind of ultralow nitrogen Split type combustion device and burning boiler |
| CN110440258B (en) * | 2019-08-19 | 2024-03-08 | 河北德奥环保科技有限公司 | Ultralow-nitrogen split type combustor and combustion boiler |
| CN110553267A (en) * | 2019-08-29 | 2019-12-10 | 东方电气集团东方锅炉股份有限公司 | multi-fuel low-nitrogen combustor |
| CN110645574A (en) * | 2019-09-25 | 2020-01-03 | 西安航天源动力工程有限公司 | Fuel pipe and combustor |
| CN111810951A (en) * | 2020-07-17 | 2020-10-23 | 北京泷涛环境科技有限公司 | Environment-friendly combustor with ultralow nitrogen oxide emission |
| CN111810951B (en) * | 2020-07-17 | 2022-06-28 | 北京泷涛环境科技有限公司 | Environment-friendly combustor with ultralow nitrogen oxide emission |
| CN111780094A (en) * | 2020-07-17 | 2020-10-16 | 北京泷涛环境科技有限公司 | Deviating equivalence ratio ultra-low nitrogen combustion device and combustion method |
| WO2023216529A1 (en) * | 2022-05-07 | 2023-11-16 | 北京航天石化技术装备工程有限公司 | Gas-air double-stage ultralow-nitrogen bottom combustor and combustion method therefor |
| CN115468163A (en) * | 2022-09-26 | 2022-12-13 | 山东大学 | Low-nitrogen combustor for ammonia fuel and working method thereof |
| CN115468163B (en) * | 2022-09-26 | 2024-05-28 | 山东大学 | Low-nitrogen combustor for ammonia fuel and working method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20200506 |