CN205592951U - Hierarchical low NOx burner of fuel - Google Patents
Hierarchical low NOx burner of fuel Download PDFInfo
- Publication number
- CN205592951U CN205592951U CN201620408278.7U CN201620408278U CN205592951U CN 205592951 U CN205592951 U CN 205592951U CN 201620408278 U CN201620408278 U CN 201620408278U CN 205592951 U CN205592951 U CN 205592951U
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- fuel
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- gun
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Abstract
The utility model discloses a hierarchical low NOx burner of fuel. This low NOx burner includes combustor body and combustion head shell body the inside from interior to exterior of cavity of combustor body is equipped with ignition fuel gas passage, wind passageway, fuel oil channel and a secondary air channel in proper order, ignition fuel gas passage's inlet end is equipped with central ignition gas import, and ignition fuel gas passage's the end of giving vent to anger is equipped with the central ignition air gun, the import feeds through with the overgrate air with a wind import respectively for wind passageway and secondary air channel, sets up a conical wind plate of distributor in the outside of central ignition air gun, a wind plate of distributor surface is equipped with a wind air outlet of arranging in proper order extremely greatly from childhood in the aperture, and secondary air channel's air -out end is equipped with overgrate air swirler. 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 fuel, avoid environmental pollution.
Description
Technical field
This utility model relates to low-NO_x combustion technology field, particularly relates to the low NO of a kind of fuel oil classification.
Background technology
Burner is the parts that mainly comprise of industrial furnace combustion apparatus, and the NOx generated in combustion process is one of principal element causing environmental pollution, and the height of NOx generation amount becomes one of important indicator 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, controls NOx for burn gas fuel and generates the NOx reduction that mainly control thermal NO x and fuel type NOx generates or will generate.Temperature has decisive role to the generation of thermal NO x, different burners produces different calorific intensity distributions in combustor, different calorific intensity distributions produce different Temperature Distribution, therefore design a novel burner and make it can meet the needs of fuel fire and burning to reduce again the generation of NOx and become the key realizing low NOx drainage.
Existing industrial gas furnace is all to use single stage burner, owing to this burner structure is simple, combustion gas is low with the mixability of air, not only there is the problem that utilization of energy is insufficient, and the NOx emission of high level can be produced when burning, it is impossible to meet the requirement of relevant environmental protection standard.
Currently used low NOx combusting technology mainly has three kinds: the first is air staged combustion technology, it makes combustion air shunt with the first combustion zone setting up oxygen deprivation, thus reduce the generation of NOx, in the second combustion zone, remaining partial air is introduced, thus complete whole combustion process；The second is fuel-staged combustion technology, and combustion air is once fully incorporated the first combustion zone, but in the first combustion zone only for answering part of fuel, residual fuel is introduced into the second combustion zone, and the oxygen utilizing the first combustion zone superfluous burns；The third is flue gas recirculation combustion technology, during the low-pressure area utilizing combustion air or fuel gas stream to produce promotes close to inert smoke backflow to combustion-gas flow, reduces partial combustion temperature and forms local reduction atmosphere, thus reducing the generation of NOx.It is low with air mixability all to there is combustion gas in existing three kinds of low NOx combusting technologies, the waste energy, easily produce localized hyperthermia and/or the problem of combustion instability, thus design a kind of burner and can utilize the fractional combustion of combustion gas and air, reduce the temperature in flame kernel region, thus reduce the burner that NOx generates, significant.
Utility model content
This utility model provides the low NO of a kind of fuel oil classification, overcomes existing burner NOx discharge big, it is impossible to realize the fractional combustion of combustion gas and air, easily produces localized hyperthermia and/or the problem of combustion instability.
The purpose of this utility model is achieved through the following technical solutions:
A kind of low NO of fuel oil classification, including burner body and combustion head shell body, it is characterized in that: the inside cavity at described burner body is sequentially provided with igniting blast tube, First air passage, fuel gallery and secondary air channel from the inside to the outside, the inlet end of wherein said igniting blast tube is provided with center fire fuel gas inlet, and the outlet side of igniting blast tube is provided with center fire air gun；The bottom of described burner body is provided with First air import and secondary air inlet, described First air passage connects with First air import and secondary air inlet respectively with secondary air channel, described igniting blast tube is arranged in First air passage, the First air distribution plate of taper is set in the outside of described center fire air gun, described First air distribution plate surface is provided with aperture from little to the First air air outlet being arranged in order greatly, First air forms the ejection of multistage wind at First air distribution plate, and with the combustion gas mixing of center fire air gun, the outlet air end of described secondary air channel is provided with secondary wind cyclone, secondary wind forms Whirl deposite tank by secondary wind cyclone；The front end of described fuel gallery is provided with fuel inlet, is being provided with atomizing medium import on the passage of fuel inlet, and atomizing medium import connects with fuel gallery, and the end of fuel gallery is oil gun.
Described center fire fuel gas inlet is higher than igniting blast tube.
It is provided with aerofoil adjusting means in described First air passage and secondary air channel.
Described center fire fuel gas inlet connects gas pipeline.
Compared with prior art, this utility model at least has the advantage that
By above-mentioned the technical solution of the utility model, this low NO is mainly made up of fuel staging gun system, air classification cyclone system, air distribution body etc..Center air gun fuel source, independent of main fuel import, mixes with First air, burns, due to the version of First air distribution plate, it is ensured that the stability of flame of centre, ensure that reliable basis for fuel oil burning.Secondary wind is the oxygen that burning provides abundance.Fuel oil and atomizing medium enter every oil gun, atomizing medium is by fuel-oil atmozation, sprayed by oil gun shower nozzle, owing to fuel oil is to have employed many oil guns to be passed through burner, and oil gun is to be distributed in groups, one group of i.e. oxygen of oil gun fuel excess is not enough and inhibits the volume of production of NOx, and another group is fuel shortage i.e. excessive oxygen, reducing flame temperature and inhibit the generation of NOx, the complementation in stove of the combustion product of groups of oil gun reaches to burn completely.The quantity of oil gun is arranged according to the watt level of burner.In sum, fuel is passed through by oil gun both classification, realizes again the deep or light distribution of fuel, and air is also divided into two-stage, therefore can greatly reduce the growing amount of NOx.
Accompanying drawing explanation
Fig. 1 is the structural representation of the low NO of a kind of fuel oil classification that this utility model embodiment provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model, the technical scheme in this utility model is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
As shown in Figure 1, low NO for a kind of fuel oil classification that this utility model embodiment proposes, including burner body 1 and combustion head shell body 2, inside cavity at burner body 1 is sequentially provided with igniting blast tube 15, First air passage 3, fuel gallery 4 and secondary air channel 5 from the inside to the outside, wherein the inlet end of igniting blast tube 15 is provided with center fire fuel gas inlet 6, and the outlet side of igniting blast tube 15 is provided with center fire air gun 7；The bottom of burner body 1 is provided with First air import 8 and secondary air inlet 9, First air passage 3 connects with First air import 8 and secondary air inlet 9 respectively with secondary air channel 5, igniting blast tube 15 is arranged in First air passage 3, the First air distribution plate 12 of taper is set in the outside of center fire air gun 7, First air distribution plate 12 surface is provided with aperture from little to the First air air outlet being arranged in order greatly, First air forms the ejection of multistage wind at First air distribution plate 12, and with the combustion gas mixing of center fire air gun 7, the outlet air end of secondary air channel 5 is provided with secondary wind cyclone 13, secondary wind forms Whirl deposite tank by secondary wind cyclone 13；The front end of fuel gallery 4 is provided with fuel inlet, is being provided with atomizing medium import 14 on the passage of fuel inlet, and atomizing medium import 14 connects with fuel gallery 4, and the end of fuel gallery 4 is oil gun.
Further, center fire fuel gas inlet 6, higher than igniting blast tube 15, is provided with aerofoil adjusting means in First air passage 3 and secondary air channel 5, and center fire fuel gas inlet 6 connects gas pipeline.
The function declaration of each structure above-mentioned to the present invention is as follows below in conjunction with the accompanying drawings:
Center fire air gun 7: be used for producing flame of centre, ensures burner stable burning, and plays the purpose that flame of centre is stable, function is altar lamp.
Oil gun: fuel uses fractional combustion, it is therefore desirable to organizing oil gun, additionally oil gun is in distribution, and every pair of oil gun power is different, so can realize the bias combustion of fuel more.
Burner body 1 (air distribution body): for the shell body of burner, being the air distribution import of whole burner, import is divided into First air and secondary wind, with aerofoil adjusting means.
First air distribution plate 12: for the passage of burner head First air, First air can be divided into multistage by these parts, with different levels spray into, combustion gas mixing with center fire air gun 7, the structure of these parts ensure that stablizing of flame of centre region, and these parts are with cyclonic action, modular construction can provide a flame-stabilizing area, serves the effect being sufficiently mixed and stablizing combustion flame with combustion gas.
Swirl flow device 13: for burner head secondary wind swirl vane, secondary wind is formed as Whirl deposite tank by this device, mixes with the fuel oil after atomization, burns after cyclone, it is provided that enough combustion-supporting pathogenic wind.
Combustion head shell body 2: the jet for whole combustion head retrains housing, and this housing is stretching into furnace interior, protection rifle head and cyclone improve the intensity of whole flame.
Compared with prior art, this utility model at least has the advantage that
By above-mentioned the technical solution of the utility model, this low NO is mainly made up of fuel staging gun system, air classification cyclone system, air distribution body etc..Center air gun fuel source, independent of main fuel import, mixes with First air, burns, due to the version of First air distribution plate, it is ensured that the stability of flame of centre, ensure that reliable basis for fuel oil burning.Secondary wind is the oxygen that burning provides abundance.Fuel oil and atomizing medium enter every oil gun, atomizing medium is by fuel-oil atmozation, sprayed by oil gun shower nozzle, owing to fuel oil is to have employed many oil guns to be passed through burner, and oil gun is to be distributed in groups, one group of i.e. oxygen of oil gun fuel excess is not enough and inhibits the volume of production of NOx, and another group is fuel shortage i.e. excessive oxygen, reducing flame temperature and inhibit the generation of NOx, the complementation in stove of the combustion product of groups of oil gun reaches to burn completely.The quantity of oil gun is arranged according to the watt level of burner.In sum, fuel is passed through by oil gun both classification, realizes again the deep or light distribution of fuel, and air is also divided into two-stage, therefore can greatly reduce the growing amount of NOx.
The above; it is only this utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; the change that can readily occur in or replacement, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (4)
1. a low NO for fuel oil classification, including burner body and combustion head shell body, it is characterised in that: described
The inside cavity of burner body is sequentially provided with igniting blast tube, First air passage, fuel gallery and secondary wind from the inside to the outside and leads to
Road, the inlet end of wherein said igniting blast tube is provided with center fire fuel gas inlet, during the outlet side of igniting blast tube is provided with
Heart ignition air gun；The bottom of described burner body is provided with First air import and secondary air inlet, described First air passage and secondary
Wind passage connects with First air import and secondary air inlet respectively, and described igniting blast tube is arranged in First air passage, in institute
The outside stating center fire air gun arranges the First air distribution plate of taper, and described First air distribution plate surface is provided with aperture from little to greatly
The First air air outlet being arranged in order, First air formed at First air distribution plate multistage wind ejection, and with center fire air gun
Combustion gas mixing, the outlet air end of described secondary air channel is provided with secondary wind cyclone, and secondary wind forms eddy flow by secondary wind cyclone
Wind；The front end of described fuel gallery is provided with fuel inlet, is being provided with atomizing medium import, atomization on the passage of fuel inlet
Medium entrance connects with fuel gallery, and the end of fuel gallery is oil gun.
2. the low NO of fuel oil classification as claimed in claim 1, it is characterised in that: described center fire fuel gas inlet is high
In igniting blast tube.
3. the low NO of fuel oil classification as claimed in claim 1, it is characterised in that: described First air passage and secondary wind
Aerofoil adjusting means it is provided with in passage.
4. the low NO of fuel oil classification as claimed in claim 1, it is characterised in that: described center fire fuel gas inlet is even
Connect gas pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620408278.7U CN205592951U (en) | 2016-05-06 | 2016-05-06 | Hierarchical low NOx burner of fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620408278.7U CN205592951U (en) | 2016-05-06 | 2016-05-06 | Hierarchical low NOx burner of fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205592951U true CN205592951U (en) | 2016-09-21 |
Family
ID=56934056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620408278.7U Expired - Fee Related CN205592951U (en) | 2016-05-06 | 2016-05-06 | Hierarchical low NOx burner of fuel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205592951U (en) |
-
2016
- 2016-05-06 CN CN201620408278.7U patent/CN205592951U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160921 Termination date: 20200506 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |