CN205690390U - Low NO - Google Patents
Low NO Download PDFInfo
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- CN205690390U CN205690390U CN201620479146.3U CN201620479146U CN205690390U CN 205690390 U CN205690390 U CN 205690390U CN 201620479146 U CN201620479146 U CN 201620479146U CN 205690390 U CN205690390 U CN 205690390U
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- air
- airduct
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- cyclone
- wind
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Abstract
This utility model relates to environmental protection and energy saving technical field, particularly relates to a kind of low NO, and it uses multilamellar air duct structure, is sequentially provided with primary air piping, circulation airduct, secondary air channel from inside to outside and burns airduct, being provided with to tube cell in described primary air piping.This utility model, by using multilamellar air duct structure, can limit the generation of NOx on source, fundamentally reduce the pollution of NOx, and need not separately add other denitrification apparatus, meanwhile, also can increase the burnout rate of coal dust, save the energy.
Description
Technical field
This utility model relates to environmental protection and energy saving technical field, particularly relates to a kind of low NO.
Background technology
China is second-biggest-in-the-world production of energy state, is also second-biggest-in-the-world energy-consuming state, or is main with coal
The country of the energy, coal primary energy consume in proportion be 69.4%, and the NOx in atmosphere pollution have 39.5% from
Burning of coal, in the face of the most serious atmospheric pollution, energy-saving and emission-reduction the most increasingly obtain the attention of people.Therefore use cleaning,
Efficiently, oligosaprobic combustion technology is the inexorable trend of social development.
Current domestic main technology be burning after denitration, i.e. after creating NOx, use reducing agent (ammonia, carbamide,
Alkane etc.) neutralize nitrogen oxides with nitrogen oxides generation chemical reaction.There is obvious shortcoming in this denitration technology: reducing agent
The danger of leakage, system complex, initial cost is big, and operating cost is high, environment may be produced secondary pollution etc..
Utility model content
The purpose of this utility model is to provide a kind of low NO, to solve the problems referred to above.
This utility model provides a kind of low NO, and it uses multilamellar air duct structure, is sequentially provided with one from inside to outside
Secondary airduct, circulation airduct, secondary air channel and burn airduct, be provided with to tube cell in primary air piping.
Further, primary air piping is provided with First air regulation valve, and circulation airduct is provided with circulated air regulation valve, and secondary air channel is provided with
Secondary air adjustor valve, burns airduct and is provided with burnt wind regulation valve.
Further, the outlet of primary air piping is provided with First air cyclone, and the outlet of secondary air channel is provided with secondary wind cyclone,
Burn airduct and be provided with burnt wind cyclone.
Further, the layout angle of First air cyclone, secondary wind cyclone and burnt wind cyclone is 40 °-50 °.
Compared with prior art, the beneficial effects of the utility model are: by using multilamellar air duct structure, can be in source
The generation of upper restriction NOx, fundamentally reduces the pollution of NOx, and need not separately add other denitrification apparatus, also can increase meanwhile
The burnout rate of coal dust, has saved the energy.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model low NO.
Detailed description of the invention
Below by specific embodiment and combine accompanying drawing this utility model is described in further detail.
Shown in ginseng Fig. 1, Fig. 1 is the structural representation of this utility model low NO.
This utility model provides a kind of low NO, and it uses multilamellar air duct structure, is sequentially provided with one from inside to outside
Secondary airduct 1, circulation airduct 3, secondary air channel 4 and burn airduct 5, be provided with to tube cell 2 in primary air piping 1.
This utility model has used grading combustion technology, dense-dilute burner combustion technology and flue gas recirculating technique, burner simultaneously
Structure is multilayer sleeve, is followed successively by primary air piping 1, circulation airduct 3, secondary air channel 4 from inside to outside, burns airduct 5.Powder feeding pipe 2
In primary air piping 1, during igniting, first lead to First air and secondary wind, logical circulated air and burnt wind, First air, secondary after flameholding
Wind, burnt wind oxygen content are respectively the 30%-40% of oxygen content, 30%-40%, 20%-40%, circulated air needed for coal dust firing
The treated clean flue gas led back for back-end ductwork, air circulation is 15%-20%, by flue gas recirculation part
Flue gas is mixed in First air, it is possible to decrease the oxygen content of First air, makes central burner be in reducing central burner temperature simultaneously
Anaerobic condition, reduces the generation of NOx, by First air, the proportioning of secondary wind, it is achieved that dense-dilute burner combustion technology, again reaches
Having arrived and reduced the purpose that NOx produces, last burnt wind provides the combustion air of abundance, makes at the most not burned coal dust
Obtain burning cmpletely, it is ensured that the burnout rate of coal dust, improve boiler thermal output.The low nitrogen burning that the present embodiment provides
Device, by using multilamellar air duct structure, can limit the generation of NOx on source, fundamentally reduce the pollution of NOx, substantially
With meet the requirement of environmental protection, and can need not separately add other denitrification apparatus, meanwhile, also can increase the burnout rate of coal dust, save energy
Source
In the present embodiment, primary air piping 1 is provided with First air regulation valve 11, and circulation airduct 3 is provided with circulated air regulation valve 31,
Secondary air channel 4 is provided with secondary air adjustor valve 41, burns airduct 5 and is provided with burnt wind regulation valve 51.
In the present embodiment, the outlet of primary air piping 1 is provided with First air cyclone 12, and the outlet of secondary air channel 4 is provided with two
Secondary wind cyclone 42, burns airduct 5 and is provided with burnt wind cyclone 52.
In the present embodiment, First air cyclone 12, secondary wind cyclone 42 and the layout angle of burnt wind cyclone 52
It it is 40 °-50 °.
The burner that the present embodiment provides uses multilamellar air duct structure, and each air quantity can regulate, and it is high to reach low nitrogen with this
The purpose of effect burning.Close burnt wind, circulated air regulation valve during igniting, open First air, secondary air adjustor valve, it is provided that sufficient
Combustion air, it is ensured that igniting rapidly, to be combusted stable after by regulation valve turn down First air, secondary air flow and open circulated air,
Burnt wind regulation valve, by First air, secondary wind, burnt wind, the regulation valve of circulated air, regulates the proportioning of each air quantity, reaches
Best combustion effect.The cyclone angle of wind tube outlet is between 40 °-50 °, makes air boundary by the cyclone of wind tube outlet
Layer is destroyed, makes coal dust be sufficiently mixed with air, reaches clean-burning purpose.
The a series of detailed description of those listed above is only for the tool of feasibility embodiment of the present utility model
Body illustrates, they are also not used to limit protection domain of the present utility model, all is made without departing from this utility model skill spirit
Within equivalent implementations or change should be included in protection domain of the present utility model.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to realize this practicality in other specific forms new
Type.Therefore, no matter from the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, this practicality is new
The scope of type is limited by claims rather than described above, it is intended that by the containing of equivalency in claim that fall
All changes in justice and scope are included in this utility model.
Claims (4)
1. a low NO, it is characterised in that it uses multilamellar air duct structure, be sequentially provided with from inside to outside primary air piping,
Circulate airduct, secondary air channel and burn airduct, being provided with to tube cell in described primary air piping.
Low NO the most according to claim 1, it is characterised in that described primary air piping is provided with First air regulation valve,
Described circulation airduct is provided with circulated air regulation valve, and described secondary air channel is provided with secondary air adjustor valve, described in burn airduct and be provided with combustion
Cinder wind regulation valve.
Low NO the most according to claim 2, it is characterised in that the outlet of described primary air piping is provided with First air rotation
Stream device, the outlet of described secondary air channel is provided with secondary wind cyclone, described in burn airduct and be provided with burnt wind cyclone.
Low NO the most according to claim 3, it is characterised in that described First air cyclone, secondary wind cyclone
And the layout angle of burnt wind cyclone is 40 °-50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620479146.3U CN205690390U (en) | 2016-05-24 | 2016-05-24 | Low NO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620479146.3U CN205690390U (en) | 2016-05-24 | 2016-05-24 | Low NO |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205690390U true CN205690390U (en) | 2016-11-16 |
Family
ID=57262168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620479146.3U Active CN205690390U (en) | 2016-05-24 | 2016-05-24 | Low NO |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205690390U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167823A (en) * | 2018-01-29 | 2018-06-15 | 西安交通大学 | A kind of band axial direction adjustable vane prevents the device of burner nozzle slagging |
| CN108317510A (en) * | 2018-03-29 | 2018-07-24 | 西安交通大学 | A kind of low NO of remote burnout degree two level eddy flow wide regulating ratioxBurner |
| CN108361690A (en) * | 2018-01-29 | 2018-08-03 | 西安交通大学 | A kind of Anti-slagging type low-NOx combustor of the long-range burnout degree of band |
-
2016
- 2016-05-24 CN CN201620479146.3U patent/CN205690390U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167823A (en) * | 2018-01-29 | 2018-06-15 | 西安交通大学 | A kind of band axial direction adjustable vane prevents the device of burner nozzle slagging |
| CN108361690A (en) * | 2018-01-29 | 2018-08-03 | 西安交通大学 | A kind of Anti-slagging type low-NOx combustor of the long-range burnout degree of band |
| CN108317510A (en) * | 2018-03-29 | 2018-07-24 | 西安交通大学 | A kind of low NO of remote burnout degree two level eddy flow wide regulating ratioxBurner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |