CN204187619U - A kind of low nitrogen gas burner and gas fired-boiler - Google Patents
A kind of low nitrogen gas burner and gas fired-boiler Download PDFInfo
- Publication number
- CN204187619U CN204187619U CN201420630793.0U CN201420630793U CN204187619U CN 204187619 U CN204187619 U CN 204187619U CN 201420630793 U CN201420630793 U CN 201420630793U CN 204187619 U CN204187619 U CN 204187619U
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- distributing pipe
- aid distributing
- final stage
- elementary
- low nitrogen
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- 239000007789 gas Substances 0.000 title claims abstract description 38
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910001873 dinitrogen Inorganic materials 0.000 title claims abstract description 23
- 239000000567 combustion gas Substances 0.000 description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000010348 incorporation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 235000016936 Dendrocalamus strictus Nutrition 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
Abstract
The utility model relates to a kind of low nitrogen gas burner and gas fired-boiler, and it at least comprises burning torch and the elementary aid distributing pipe be nested in successively from inside to outside outside described burning torch and final stage aid distributing pipe.The utility model sends into combustion-supporting gas by layering, reduces the discharge of NOx preferably.
Description
Technical field
The utility model relates to a kind of burner, particularly a kind of low nitrogen gas burner and arrange the gas fired-boiler of this low nitrogen gas burner.
Background technology
Industrial Boiler is have a large capacity and a wide range in the application characteristic of China, current running Industrial Boiler about 550,000, and because China's fuel is based on coal, thus the Industrial Boiler of 90% is coal-burning boiler, and the Industrial Boiler of 10% is gas fired-boiler.Industry coal-boiler discharge nitrogen oxide 2,000,000 tons in 2012, accounts for about 15% of national nitrogen oxide emission.Therefore Industrial Boiler is the one of the main reasons causing haze weather, and for reducing NOx discharge, country has formulated Industrial Boiler discharge standard, and for some areas, strictly bans coal-burned industrial boiler, all adopts combustion gas.Although comparatively coal-burning boiler is low for major part gas industry boiler current NOx emission concentration, but still can not meet environmental requirement.
Utility model content
The purpose of this utility model be propose a kind of improve after low nitrogen gas burner and gas fired-boiler, it can reduce the discharge of NOx preferably.
For achieving the above object, the utility model provides following technical scheme:
A kind of low nitrogen gas burner, it at least comprises Gas Pipe and the elementary aid distributing pipe be nested in successively from inside to outside outside described Gas Pipe and final stage aid distributing pipe.
Further, described elementary aid distributing pipe is provided with elementary air quantity adjusting mechanism, described final stage aid distributing pipe is provided with final stage air quantity adjusting mechanism, and described elementary air quantity adjusting mechanism coordinates with described final stage air quantity adjusting mechanism makes described elementary aid distributing pipe and described final stage aid distributing pipe according to the air output ratio air-out preset.
Further, the middle aid distributing pipe be arranged between described elementary aid distributing pipe and described final stage aid distributing pipe is at least also comprised.
Further, described middle aid distributing pipe is provided with middle air quantity adjusting mechanism, and described elementary air quantity adjusting mechanism, described middle air quantity adjusting mechanism coordinate with described final stage air quantity adjusting mechanism makes described elementary aid distributing pipe, described middle aid distributing pipe and described final stage aid distributing pipe according to the air output ratio air-out preset.
Further, the air outlet of at least one aid distributing pipe in described elementary aid distributing pipe, described final stage aid distributing pipe and described middle aid distributing pipe is provided with deflector.
Further, described deflector is outer expanding shape along the outer of the air outlet of described elementary aid distributing pipe, described final stage aid distributing pipe and described middle aid distributing pipe.
Further, the angular range between the axis of described deflector described elementary aid distributing pipe corresponding thereto, described final stage aid distributing pipe or described middle aid distributing pipe is 20 ° to 45 °.
Further, the air inlet of described elementary aid distributing pipe is positioned at the side of described elementary aid distributing pipe bottom, and the first annular channel setting formed between described elementary aid distributing pipe and described Gas Pipe has elementary adjustable rotary flow.
Further, the air inlet of described final stage aid distributing pipe is positioned at the side of described final stage aid distributing pipe bottom, and the second circular passage formed between described middle aid distributing pipe and described final stage aid distributing pipe is provided with the flow of final stage adjustable rotary.
The utility model also provides a kind of gas fired-boiler, and it at least comprises the low nitrogen gas burner in the various embodiments described above.
Based on technique scheme, the utility model has the advantages that:
The utility model passes through to be nested in the elementary aid distributing pipe outside Gas Pipe and final stage aid distributing pipe from inside to outside successively, from the ground floor of elementary aid distributing pipe as combustion-supporting gas, from the circular passage formed between elementary aid distributing pipe and final stage aid distributing pipe as another layer of combustion-supporting gas, that is, in combustion zone, the combustion gas sent from Gas Pipe is surrounded by another layer of combustion-supporting gas of ground floor and ground floor periphery successively, the mode of this layering feeding combustion-supporting gas is conducive to the temperature levels reducing burner Initial Stage after Ignition, thus effectively can reduce the discharge of NOx, energy-conserving and environment-protective.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of low nitrogen gas burner one embodiment provided by the utility model;
Fig. 2 is the M direction view of Fig. 1.
Detailed description of the invention
The object implemented for making the utility model, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, are further described in more detail the technical scheme in the utility model embodiment.In the accompanying drawings, same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Described embodiment is the utility model part embodiment, instead of whole embodiments.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore the restriction to the utility model protection domain can not be interpreted as.
Fig. 1 and Fig. 2 shows the structural representation of low nitrogen gas burner one embodiment provided by the utility model, as can be seen from the figure, the low nitrogen gas burner in the present embodiment at least comprises burning torch 1 and the elementary aid distributing pipe 2 be nested in successively from inside to outside outside burning torch 1 and final stage aid distributing pipe 3.Burning torch 1 is arranged in the center of elementary aid distributing pipe 2, and the circular passage between burning torch 1 and elementary aid distributing pipe 2 is also provided with the Gas Pipe 8 that several circumference is intervally arranged around burning torch 1, and Gas Pipe 8 can be accessed by combustion gas.
The utility model passes through to be nested in the elementary aid distributing pipe 2 outside Gas Pipe 8 and final stage aid distributing pipe 3 from inside to outside successively, from the ground floor of elementary aid distributing pipe 2 as combustion-supporting gas (air), another layer from the circular passage formed between elementary aid distributing pipe 2 and final stage aid distributing pipe 3 as combustion-supporting gas (air), that is, in combustion zone, the combustion gas sent from Gas Pipe 8 is surrounded by another layer of combustion-supporting gas of ground floor and ground floor periphery successively, the mode of this layering feeding combustion-supporting gas is conducive to the temperature levels reducing burner Initial Stage after Ignition, thus effectively can reduce the discharge of NOx, energy-conserving and environment-protective.
Elementary aid distributing pipe 2 is provided with elementary air quantity adjusting mechanism, and final stage aid distributing pipe 3 is provided with final stage air quantity adjusting mechanism, and elementary air quantity adjusting mechanism coordinates with final stage air quantity adjusting mechanism makes elementary aid distributing pipe 2 and final stage aid distributing pipe 3 according to the air output ratio air-out preset.Can, according to the situation of the discharge of combustion position and NOx, elementary air quantity adjusting mechanism and the air output ratio of final stage air quantity adjusting mechanism to elementary aid distributing pipe 2 and final stage aid distributing pipe 3 be utilized to adjust.
The present embodiment utilizes elementary air quantity adjusting mechanism and final stage air quantity adjusting mechanism to send into combustion zone according to the air output ratio preset, it sends on the basis of the mode of combustion-supporting gas in layering, be further advanced by the air output ratio selecting to be applicable to, reduce the temperature levels of burner Initial Stage after Ignition, reduce the discharge of NOx further.
In above-described embodiment, low nitrogen gas burner provided by the utility model at least can also comprise middle aid distributing pipe 4, middle aid distributing pipe 4 is arranged between elementary aid distributing pipe 2 and final stage aid distributing pipe 3, middle aid distributing pipe 4 is provided with middle air quantity adjusting mechanism, and elementary air quantity adjusting mechanism, middle air quantity adjusting mechanism coordinate with final stage air quantity adjusting mechanism makes described elementary aid distributing pipe 2, middle aid distributing pipe 4 and final stage aid distributing pipe 3 according to the air output ratio air-out preset.
During the present embodiment work, such as, by middle air quantity adjusting mechanism, elementary air quantity adjusting mechanism, middle air quantity adjusting mechanism and final stage air quantity adjusting mechanism, account for 30% of total blast volume by the air output of elementary aid distributing pipe 2 respectively, and the air output of middle aid distributing pipe 4 accounts for 30% of total blast volume, the air output of final stage aid distributing pipe 3 accounts for 40% of total blast volume, and the air stratification in each aid distributing pipe is sent into, thus for reducing the temperature levels of burner Initial Stage after Ignition, the discharge reducing NOx provides advantage.
It should be noted that: the quantity of aid distributing pipe is not limited to above-mentioned three, can also be more, but take into account and consider that processing cost and NOx lower efficiency, preferably adopt the structural allocation provided in above-described embodiment.
In the various embodiments described above, the air outlet of at least one aid distributing pipe in elementary aid distributing pipe 2, final stage aid distributing pipe 3 and middle aid distributing pipe 4 is provided with deflector 5, can the incorporation time of reasonable delay combustion-supporting gas by deflector 5, reducing the temperature levels of Initial Stage after Ignition by controlling incorporation time, reducing the discharge of NOx further.Deflector 5 can be outer expanding shape along the outer of the air outlet of elementary aid distributing pipe 2, final stage aid distributing pipe 3 and middle aid distributing pipe 4.
Known through many experiments: the angular range between the axis of deflector 5 described elementary aid distributing pipe 2 corresponding thereto, described final stage aid distributing pipe 3 or described middle aid distributing pipe 4 is preferably set to 20 ° to 45 °, the control of this scope to the incorporation time of combustion-supporting gas and combustion gas is comparatively reasonable.
In above-described embodiment, the air inlet of elementary aid distributing pipe 2 is positioned at the side of elementary aid distributing pipe 2 bottom, the first annular channel setting between elementary aid distributing pipe 2 and Gas Pipe 8 has elementary adjustable rotary flow 6, make to be rotated by the primary air of elementary aid distributing pipe 2 by elementary adjustable rotary flow 6, combustion-supporting gas is fully mixed with combustion gas, be conducive to the temperature levels reducing burner Initial Stage after Ignition, reduce the discharge capacity of NOx further.
In the various embodiments described above, the air inlet of final stage aid distributing pipe 3 is positioned at the side of final stage aid distributing pipe 3 bottom, and the second circular passage between middle aid distributing pipe 4 and final stage aid distributing pipe 3 is provided with final stage adjustable rotary flow 7.Make to be rotated by the air of the second circular passage between middle aid distributing pipe 4 and final stage aid distributing pipe 3 by elementary adjustable rotary flow 6, combustion-supporting gas is fully mixed with combustion gas, be conducive to the temperature levels reducing burner Initial Stage after Ignition, reduce the discharge capacity of NOx further.
To sum up, first circular passage and the second circular passage are all provided with adjustable rotary flow, and the 3rd circular passage between middle aid distributing pipe 4 and elementary aid distributing pipe 2 does not arrange spinning disk, its object is to, make to be set to direct current by the air of the 3rd circular passage, thus the first circular passage and the second circular passage can be isolated by the 3rd circular passage, avoid the air in the second circular passage to enter into the first circular passage.
In the various embodiments described above, middle air quantity adjusting mechanism, elementary air quantity adjusting mechanism, middle air quantity adjusting mechanism can adopt valve, and the eddy flow angle of the corresponding spinning disk of adjustment (such as elementary adjustable rotary flow 6 and final stage adjustable rotary flow 7) also can be adopted to realize.
The utility model also provides a kind of gas fired-boiler, and it at least comprises the low nitrogen gas burner in the various embodiments described above, and the other parts of described gas fired-boiler are prior art, do not repeat them here.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to detailed description of the invention of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (10)
1. a low nitrogen gas burner, is characterized in that: at least comprise Gas Pipe (8) and be nested in the outer elementary aid distributing pipe (2) of described Gas Pipe (8) and final stage aid distributing pipe (3) from inside to outside successively.
2. low nitrogen gas burner as claimed in claim 1, it is characterized in that: described elementary aid distributing pipe (2) is provided with elementary air quantity adjusting mechanism, described final stage aid distributing pipe (3) is provided with final stage air quantity adjusting mechanism, and described elementary air quantity adjusting mechanism coordinates with described final stage air quantity adjusting mechanism makes described elementary aid distributing pipe (2) and described final stage aid distributing pipe (3) according to the air output ratio air-out preset.
3. low nitrogen gas burner as claimed in claim 2, is characterized in that: at least also comprise the middle aid distributing pipe (4) be arranged between described elementary aid distributing pipe (2) and described final stage aid distributing pipe (3).
4. low nitrogen gas burner as claimed in claim 3, it is characterized in that: described middle aid distributing pipe (4) is provided with middle air quantity adjusting mechanism, described elementary air quantity adjusting mechanism, described middle air quantity adjusting mechanism coordinate with described final stage air quantity adjusting mechanism makes described elementary aid distributing pipe (2), described middle aid distributing pipe (4) and described final stage aid distributing pipe (3) according to the air output ratio air-out preset.
5. low nitrogen gas burner as claimed in claim 3, is characterized in that: the air outlet of at least one aid distributing pipe in described elementary aid distributing pipe (2), described final stage aid distributing pipe (3) and described middle aid distributing pipe (4) is provided with deflector (5).
6. low nitrogen gas burner as claimed in claim 5, is characterized in that: described deflector (5) is outer expanding shape along the outer of the air outlet of described elementary aid distributing pipe (2), described final stage aid distributing pipe (3) and described middle aid distributing pipe (4).
7. low nitrogen gas burner as claimed in claim 6, is characterized in that: the angular range between the axis of described deflector (5) described elementary aid distributing pipe (2) corresponding thereto, described final stage aid distributing pipe (3) or described middle aid distributing pipe (4) is 20 ° to 45 °.
8. low nitrogen gas burner as claimed in claim 1, it is characterized in that: the air inlet of described elementary aid distributing pipe (2) is positioned at the side of described elementary aid distributing pipe (2) bottom, and the first annular channel setting formed between described elementary aid distributing pipe (2) and described Gas Pipe (8) has elementary adjustable rotary flow (6).
9. low nitrogen gas burner as claimed in claim 3, it is characterized in that: the air inlet of described final stage aid distributing pipe (3) is positioned at the side of described final stage aid distributing pipe (3) bottom, and the second circular passage formed between described middle aid distributing pipe (4) and described final stage aid distributing pipe (3) is provided with final stage adjustable rotary flow (7).
10. a gas fired-boiler, is characterized in that: it at least comprises low nitrogen gas burner as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420630793.0U CN204187619U (en) | 2014-10-28 | 2014-10-28 | A kind of low nitrogen gas burner and gas fired-boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420630793.0U CN204187619U (en) | 2014-10-28 | 2014-10-28 | A kind of low nitrogen gas burner and gas fired-boiler |
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| Publication Number | Publication Date |
|---|---|
| CN204187619U true CN204187619U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420630793.0U Active CN204187619U (en) | 2014-10-28 | 2014-10-28 | A kind of low nitrogen gas burner and gas fired-boiler |
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| Country | Link |
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| CN (1) | CN204187619U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627313A (en) * | 2014-10-28 | 2016-06-01 | 烟台龙源电力技术股份有限公司 | Low-nitrogen gas burner and gas boiler |
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2014
- 2014-10-28 CN CN201420630793.0U patent/CN204187619U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627313A (en) * | 2014-10-28 | 2016-06-01 | 烟台龙源电力技术股份有限公司 | Low-nitrogen gas burner and gas boiler |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |