CN206755168U - A kind of low nitrogen gas burner - Google Patents
A kind of low nitrogen gas burner Download PDFInfo
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- CN206755168U CN206755168U CN201721164011.9U CN201721164011U CN206755168U CN 206755168 U CN206755168 U CN 206755168U CN 201721164011 U CN201721164011 U CN 201721164011U CN 206755168 U CN206755168 U CN 206755168U
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- blower fan
- combustion head
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Abstract
A kind of low nitrogen gas burner, including blower fan, pressure stabilizing chamber, mixing chamber, distributor chamber and combustion head, the outlet of blower fan and the inlet communication of pressure stabilizing chamber, the outlet of pressure stabilizing chamber and the inlet communication of mixing chamber, the outlet of mixing chamber and the inlet communication of distributor chamber, the outlet of distributor chamber connect with combustion head, combustion head is inserted in the burner hearth of boiler body, blower fan is provided with fresh inlet and returns cigarette import, returns cigarette import and is connected by smoke-returning pipeline with the flue of boiler body, distributor chamber is provided with fuel gas inlet.By the power of blower fan, fresh air and time cigarette are sent into pressure stabilizing chamber together, steady pressure is kept, is subsequently sent to mixing chamber and uniformly mixes, by reasonably distributing in distributor chamber, be sent into combustion head.In combustion head, fuel is transported to flame proparea and back zone by dividing plate and jet pipe, burns stage by stage；Flame Pan Chu is being divided front and rear flame is formed inner eddy flow.The utility model can be applied to newly constructed boiler and active boiler, and nitrogen oxides is stable in 30mg/m3Within.
Description
Technical field
The emission control field of nitrogen oxides is the utility model is related to, is especially a kind of low nitrogen gas burner.
Background technology
It is well known that nitrogen oxides is because being likely to form acid rain, it is one of composition of atmosphere pollution, but current research is found
Nitrogen oxides is also to form one of main component of haze.With China's rapid development of economy, the consumption of the energy also with day
It is all to increase.Natural gas belongs to a kind of clean energy resource compared with other other fossil energies, but more and more with dosage, its
Exposure forms colloidal with reference to the steam in air, so as to form haze, therefore is to be formed except the emission problem of nitrogen oxides
One of PM2.5 composition.
At the same time, Beijing has promulgated newly《Emission standard of air pollutants for boilers》, it is specified that from April 1st, 2017
Start, all is being 80mg/m with gas fired-boiler emission limits of nitrogen oxides3, newly-built gas fired-boiler emission limits of nitrogen oxides
30mg/m3, this just proposes the requirement of low nitrogen to current gas burner.
The formation mechenism of gas fired-boiler nitrogen oxides mainly divides three classes：Heating power type, Quick-type and fuel type, wherein with heating power
Based on type, more than 90% is accounted for, fuel type can almost be ignored.Existing low nitrogen burning control technology is mainly burnt by reducing
Flame temperature reduces the formation of thermal NO.Major technique have fractional combustion (including air classification, fuel staging),
Circulation, lean fuel premixed combustion, water cooling premixed combustion etc. in flue gas recirculation, flue gas.
Above-mentioned combustion technology has the following disadvantages：(1) fractional combustion needs as traditional nitrogen oxides control technology
Proportioning and control are preferably adjusted, otherwise easily produces imperfect combustion problem；(2) flue gas recirculation can be empty by reducing
Oxygen concentration reduces flame temperature in gas, but it is difficult that nitrogen oxides is dropped into below 80mg to be single use；(3) circulated in flue gas
Volume is internally formed in burner hearth by flame and sucks back stream, makes the flue gas after burning participate in burning again, to reduce the temperature of flame of centre
Degree, but be single use and nitrogen oxides can only be controlled in 80mg；(4) the intrinsic blockage problem of lean fuel premixed combustion technology makes it
In the presence of certain potential safety hazard, Department of Qulity Supervision has required transformation project it is not recommended that using the technology in plain text；(5) water cooling premixed combustion skill
For art to be integral type burner with boiler, application conditions are limited, are only applicable to specific boiler, can not promote on a large scale.
In view of this, it is necessary to be redesigned to gas burner, current demand is adapted it to.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of low nitrogen gas burner, can be applied to newly constructed boiler
And active boiler, and nitrogen oxides is stable in 30mg/m3Within.
Technical solution of the present utility model is to provide a kind of low nitrogen gas burner with following structure, including
Blower fan, pressure stabilizing chamber, mixing chamber, distributor chamber and combustion head, the outlet of the blower fan communicates with the import connection of pressure stabilizing chamber, described steady
The outlet of pressure chamber communicates with the import connection of mixing chamber, and the outlet of the mixing chamber communicates with the import connection of distributor chamber, described
The outlet of distributor chamber is connected with combustion head to be communicated, and combustion head is inserted in the burner hearth of boiler body, and the blower fan enters provided with fresh air
Mouth and time cigarette import, return cigarette import and communicated by smoke-returning pipeline with the flue connection of boiler body, offered on the distributor chamber
Fuel gas inlet, the fuel gas inlet is connected by pipeline with fuel gas source to be communicated.
A kind of low nitrogen gas burner described in the utility model, wherein, the outlet of the blower fan and the import of pressure stabilizing chamber
Communicated by flange connection.
A kind of low nitrogen gas burner described in the utility model, wherein, electric control valve is housed on the smoke-returning pipeline.
After above structure, compared with prior art, a kind of low nitrogen gas burner of the utility model has following excellent
Point：During work, by the power of blower fan, convey outside fresh air and by boiler body flue time cigarette come and be sent into voltage stabilizing together
Room, make fresh air and return the pressure that cigarette keeps stable, be then sent to mixing chamber, both uniformly mix, and ultimately form air and mix
Close gas.By reasonably distributing in distributor chamber, natural gas and air Mixture are sent into combustion head respectively.In combustion head,
Fuel is respectively delivered to the proparea and back zone of flame by dividing plate and jet pipe, burns stage by stage；Equally flame Pan Chu is being divided to make at a high speed
The fuel of ejection forms 30~60 degree of angle with axis, and then front and rear flame is formed inner eddy flow, forms inner loop.By
This is visible, by this special construction of the utility model burner, realizes the fractional combustion and cigarette in low-NO_x combustion technology
Circulated in gas, by nitrogen oxides stability contorting in 60mg/m3Within, in conjunction with flue gas recirculating technique, so as to by nitrogen oxides
Stabilization is in 30mg/m3Within, therefore, the utility model burner can be applied in newly constructed boiler and active boiler.
Brief description of the drawings
Fig. 1 is a kind of main structure diagram of low nitrogen gas burner of the utility model；
Fig. 2 is a kind of right side structural representation of low nitrogen gas burner of the utility model；
Fig. 3 is structural representation when a kind of low nitrogen gas burner of the utility model is connected with boiler body.
Embodiment
Low nitrogen gas burner a kind of to the utility model is made further detailed with reference to the accompanying drawings and detailed description
Explanation：
As shown in Figures 1 to 3, in this embodiment, a kind of low nitrogen gas burner of the utility model includes blower fan
1st, pressure stabilizing chamber 2, mixing chamber 3, distributor chamber 4 and combustion head 5.The outlet of blower fan 1 is connected with the import of pressure stabilizing chamber 2 and communicated, pressure stabilizing chamber 2
Outlet be connected and communicate with the import of mixing chamber 3, the outlet of mixing chamber 3 is connected with the import of distributor chamber 4 to be communicated, distributor chamber 4
Outlet is connected with combustion head 5 to be communicated, and combustion head 5 is inserted in the burner hearth of boiler body 14.Blower fan 1 is provided with fresh inlet 6 and returned
Cigarette import 9, time cigarette import 9 is connected by smoke-returning pipeline 12 with the flue 13 of boiler body 14 to be communicated, and is equipped with smoke-returning pipeline 12
Electric control valve 11, it is easy to worker to be turned on and off according to demand to smoke-returning pipeline 12.Combustion gas is offered on distributor chamber 4 to enter
Mouth 7, the fuel gas inlet 7 is connected by pipeline with fuel gas source to be communicated.
The import of pressure stabilizing chamber 2 is connected by flange 8 with the outlet of blower fan 1 and communicated, and is easy to worker to be installed according to scene
Regulation, reach any adjustment blower fan 1, fresh inlet 6 and the purpose for going back to the position of cigarette import 9, to tackle the spy at transformation project scene
Different situation.
During work, by the power of blower fan 1, by outside fresh air and by flue 13 convey Lai the cigarette that returns be sent into pressure stabilizing chamber together
2, make fresh air and return the pressure that cigarette keeps stable, be then sent to mixing chamber 3, uniformly mixed, ultimately form air and mix
Close gas.By reasonably distributing in distributor chamber 4, natural gas and air Mixture are sent into combustion head 5 respectively.In combustion head 5
Interior, fuel is respectively delivered to the proparea and back zone of flame by dividing plate and jet pipe, burns stage by stage；Equally flame Pan Chu is being divided to make height
The fuel that speed sprays forms 30~60 degree of angle with axis, and then front and rear flame is formed inner eddy flow, forms inner loop.
As can be seen here, by this special construction of the utility model burner, realize fractional combustion in low-NO_x combustion technology and
Circulated in flue gas, by nitrogen oxides stability contorting in 60mg/m3Within, in conjunction with flue gas recirculating technique, so as to by nitrogen oxidation
Thing is stable in 30mg/m3Within, therefore, the utility model burner can be applied in newly constructed boiler and active boiler.
Fig. 3 is structural representation when the utility model burner is connected with boiler body 14, the numbering 10 indicated in figure
For the utility model burner, it can be seen that the horizontal pipeline section perforate of flue 13, takes back smoke pipeline 12, this time smoke pipe
The other end in road 12 is connected with time cigarette import 9 of the utility model burner 10 and communicated, by smoke-returning pipeline 12 by after burning
Flue gas is sent into burner 10 and participates in burning again, forms flue gas recirculation.
Embodiment described above is only that preferred embodiment of the present utility model is described, not to this practicality
New scope is defined, and on the premise of the utility model design spirit is not departed from, those of ordinary skill in the art are to this
The various modifications and improvement that the technical scheme of utility model is made, all should fall into the scope of protection of the utility model.
Claims (3)
- A kind of 1. low nitrogen gas burner, it is characterised in that：Including blower fan (1), pressure stabilizing chamber (2), mixing chamber (3), distributor chamber (4) With combustion head (5), the outlet of the blower fan (1) is connected with the import of pressure stabilizing chamber (2) to be communicated, the outlet of the pressure stabilizing chamber (2) with The import connection of mixing chamber (3) is communicated, and the outlet of the mixing chamber (3) is connected with the import of distributor chamber (4) to be communicated, the distribution The outlet of room (4) is connected with combustion head (5) and communicated, and the combustion head (5) is inserted in the burner hearth of boiler body (14), the blower fan (1) it is provided with fresh inlet (6) and returns cigarette import (9), described time cigarette import (9) passes through smoke-returning pipeline (12) and boiler body (14) flue (13) connection communicates, and offers fuel gas inlet (7) on the distributor chamber (4), the fuel gas inlet (7) passes through pipeline It is connected and communicates with fuel gas source.
- A kind of 2. low nitrogen gas burner according to claim 1, it is characterised in that：The outlet of the blower fan (1) with it is steady The import of pressure chamber (2) is communicated by flange (8) connection.
- A kind of 3. low nitrogen gas burner according to claim 1 or 2, it is characterised in that：On the smoke-returning pipeline (12) Equipped with electric control valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721164011.9U CN206755168U (en) | 2017-09-12 | 2017-09-12 | A kind of low nitrogen gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721164011.9U CN206755168U (en) | 2017-09-12 | 2017-09-12 | A kind of low nitrogen gas burner |
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| Publication Number | Publication Date |
|---|---|
| CN206755168U true CN206755168U (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721164011.9U Active CN206755168U (en) | 2017-09-12 | 2017-09-12 | A kind of low nitrogen gas burner |
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| CN (1) | CN206755168U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812808A (en) * | 2019-03-04 | 2019-05-28 | 深圳粤通新能源环保技术有限公司 | A kind of combustion-supporting low NO of Hydrogen Energy |
-
2017
- 2017-09-12 CN CN201721164011.9U patent/CN206755168U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812808A (en) * | 2019-03-04 | 2019-05-28 | 深圳粤通新能源环保技术有限公司 | A kind of combustion-supporting low NO of Hydrogen Energy |
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