CN206973556U - Ultralow nitrogen gas burner - Google Patents
Ultralow nitrogen gas burner Download PDFInfo
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- CN206973556U CN206973556U CN201720839340.2U CN201720839340U CN206973556U CN 206973556 U CN206973556 U CN 206973556U CN 201720839340 U CN201720839340 U CN 201720839340U CN 206973556 U CN206973556 U CN 206973556U
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- gas
- wind conveying
- conveying pipe
- smoke backflow
- pipe
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Abstract
Ultralow nitrogen gas burner, by some Gas Pipes, wind conveying pipe, fuel gas inlet pipe, gas bag, casing, eddy flow mechanism and smoke backflow mechanism composition, wind conveying pipe is arranged on casing front end, some Gas Pipes are uniformly arranged on wind conveying pipe periphery, Gas Pipe import communicates with fuel gas inlet pipe, wind conveying pipe front end sets the necking baffle plate of annular, eddy flow mechanism is placed in inside wind conveying pipe, eddy flow mechanism is made up of cyclone and fixed support, gas bag is arranged on inside wind conveying pipe, smoke backflow mechanism is formed by paying case and smoke backflow regulating valve, smoke backflow adjusts valve outlet and communicated by paying case with casing, entrance is connected by flange in smoke backflow pipeline, YE is set in smoke backflow regulating valve.The utility model passes through multistage combustion using multiple Gas Pipe annular spreads around wind conveying pipe, simultaneously flue gas recirculation is realized in wind conveying pipe front end necking design, in addition flue gas outer circulation is realized by smoke backflow mechanism, greatly reduces the generation of NOx in combustion process.
Description
Technical field
It the utility model is related to fuel gas combustion equipment technical field, and in particular to a kind of ultralow nitrogen gas burner.
Background technology
NOx generation is divided into by thermal NO x, Quick-type NOx and fuel type NOx according to Theory of Combustion.Contain in natural gas
Nitrogen quantity is relatively low, and therefore, fuel type NOx is not its main Control Cooling.Thermal NO x refers to N2 in combustion air in height
The lower oxidation generation NOx of temperature, is the chief component for discharging nitrogen oxides in effluent, and will in low NO design process
The leading indicator of control.Formation mechanism on thermal NO x typically uses Jie Lidaoweiqi mechanism：When temperature is less than 1500 DEG C
When, heating power NOx growing amount is seldom；During higher than 1500 DEG C, temperature often raises 100 DEG C, and reaction speed will increase 6 ~ 7 times.In reality
In the combustion process of border, because the Temperature Distribution in combustion chamber is uneven, if area of localized hyperthermia, then in these region meetings
More NOx is generated, it may generate critical effect to the NOx in whole combustion chamber.How NOx life is effectively reduced
Into the problem as combustion apparatus industry primary study.
Utility model content
The utility model provides a kind of ultralow nitrogen gas burner, is generated with solving burning NOx existing for prior art
Amount influences greatly the problem of environment.
Technical scheme is used by the utility model solves its technical problem：
A kind of ultralow nitrogen gas burner, by some Gas Pipes, wind conveying pipe, fuel gas inlet pipe, gas bag, casing, eddy flow machine
Structure and smoke backflow mechanism composition, wind conveying pipe are arranged on casing front end, and some Gas Pipes are uniformly arranged on wind conveying pipe periphery, combustion gas
Pipe import is communicated with fuel gas inlet pipe, and wind conveying pipe front end sets the necking baffle plate of annular, and eddy flow mechanism is placed in inside wind conveying pipe, is revolved
Stream mechanism is made up of cyclone and fixed support, and gas bag exports installed in fuel gas inlet pipe, and smoke backflow mechanism is by paying case and cigarette
Gas return valve forms, and smoke backflow adjusts valve outlet and communicated by paying case with casing, and electricity is set in smoke backflow regulating valve
Dynamic actuator.
The utility model burner is uniformly arranged on wind conveying pipe inner peripheral, the burning of each Gas Pipe by some Gas Pipes
Fuel-rich combustion area and fuel-lean combustion area are distinguished into, forms fractional combustion, because the advection wind velocity in centre is fast, air
With flue gas outer circulation gas by when, flame of centre temperature is reduced under the cooling effect of circulating flue gas, great degree
The generation for inhibiting NOx, reach the effect of low nitrogen burning；The utility model burner, circulating technology in flue gas is employed,
Wind conveying pipe front end has carried out necking design, and high speed winds are generated by necking baffle in exit and are vortexed, by surrounding low temperature, poor
The flue gas volume of oxygen is drawn onto flame surface, on the one hand reduces flame surface temperature, on the other hand dilutes the oxygen concentration of flame surface,
So as to suppress NOx generation；Flue gas outside circulation is that partial fume is strile-backd burner by smoke backflow mechanism guides, and
Air mixing carries out second-time burning, can reduce overall flame temperature and reduce NOx generation.Flue gas outside circulation can reduce
60-80%NOx is discharged.
The utility model uses multiple Gas Pipe annular spreads around wind conveying pipe by multistage combustion, while in wind conveying pipe
Front end necking design, which is realized in flue gas, to be circulated, and is realized flue gas outer circulation by smoke backflow mechanism in addition, is greatly reduced burning
During NOx generation.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is schematic elevation view of the present utility model；
Fig. 3 is the burning schematic diagram of the utility model combustion chamber.
1 Gas Pipe in figure, 2 wind conveying pipes, 3 fuel gas inlet pipes, 4 gas bags, 5 casings, 6 cyclone motors, 7 pairs of casees, 8 electronic are held
Row device, 9 smoke backflow regulating valves, 10 cyclones, 11 necking baffle plates, 12 fuel-rich combustion areas, 13 fuel-lean combustion areas.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, a kind of ultralow nitrogen gas burner, is entered by some Gas Pipes 1, wind conveying pipe 2, combustion gas
Mouth pipe 3, gas bag 4, casing 5, eddy flow mechanism and smoke backflow mechanism composition, wind conveying pipe 2 are arranged on the front end of casing 5, some combustion gas
Pipe 1 is uniformly arranged on the periphery of wind conveying pipe 2, and the import of Gas Pipe 1 communicates with fuel gas inlet pipe 3, and the front end of wind conveying pipe 2 sets the contracting of annular
Mouth baffle plate 11, eddy flow mechanism are placed in inside wind conveying pipe 2, and eddy flow mechanism is made up of cyclone 10 and cyclone motor 6, and gas bag 4 is pacified
Exported mounted in fuel gas inlet pipe 3, smoke backflow mechanism is formed by paying case 7 and smoke backflow regulating valve 9, smoke backflow regulating valve 9
Outlet is communicated by paying case 7 with casing 5, and YE 8 is set in smoke backflow regulating valve 9.
Some Gas Pipes of the utility model are uniformly arranged on wind conveying pipe periphery, and the burning of each Gas Pipe 1 is distinguished into fuel-rich
Expect combustion zone 12 and fuel-lean combustion area 13, form fractional combustion, because the advection wind velocity in centre is fast, air and flue gas
Outer circulation gas by when, flame of centre temperature is reduced under the cooling effect of circulating flue gas, the suppression of great degree
NOx generation, reach the effect of low nitrogen burning；Using flue gas interior recirculation technology, necking has been carried out in wind conveying pipe front end
Design, high speed winds are generated by necking baffle in exit and are vortexed, and the flue gas volume of low temperature around, oxygen deprivation is drawn onto into flame table
Face, flame surface temperature is on the one hand reduced, the oxygen concentration of flame surface is on the other hand diluted, so as to suppress NOx generation；Cigarette
Gas outside circulation is that partial fume is strile-backd burner by smoke backflow mechanism guides, and air mixing carries out second-time burning,
Overall flame temperature can be reduced and reduce NOx generation.Flue gas outside circulation can reduce 60-80%NOx discharges.
Claims (1)
1. a kind of ultralow nitrogen gas burner, it is characterized in that by some Gas Pipes, wind conveying pipe, fuel gas inlet pipe, gas bag, casing,
Eddy flow mechanism and smoke backflow mechanism composition, wind conveying pipe are arranged on casing front end, and some Gas Pipes are uniformly arranged on outside wind conveying pipe
Enclose, Gas Pipe import communicates with fuel gas inlet pipe, and wind conveying pipe front end sets the necking baffle plate of annular, and eddy flow mechanism is placed in wind conveying pipe
Inside, eddy flow mechanism are made up of cyclone and fixed support, and gas bag exports installed in fuel gas inlet pipe, and smoke backflow mechanism is by paying
Case and smoke backflow regulating valve composition, smoke backflow adjusts valve outlet and communicated by paying case with casing, in smoke backflow regulating valve
YE is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720839340.2U CN206973556U (en) | 2017-07-12 | 2017-07-12 | Ultralow nitrogen gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720839340.2U CN206973556U (en) | 2017-07-12 | 2017-07-12 | Ultralow nitrogen gas burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206973556U true CN206973556U (en) | 2018-02-06 |
Family
ID=61402571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720839340.2U Active CN206973556U (en) | 2017-07-12 | 2017-07-12 | Ultralow nitrogen gas burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206973556U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109539258A (en) * | 2019-01-11 | 2019-03-29 | 佛山市科皓燃烧设备制造有限公司 | A kind of low NOx radiant tube combustion system of adjustable smoke backflow amount |
-
2017
- 2017-07-12 CN CN201720839340.2U patent/CN206973556U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109539258A (en) * | 2019-01-11 | 2019-03-29 | 佛山市科皓燃烧设备制造有限公司 | A kind of low NOx radiant tube combustion system of adjustable smoke backflow amount |
| CN109539258B (en) * | 2019-01-11 | 2023-10-10 | 佛山市科皓燃烧设备制造有限公司 | Low NOx radiant tube combustion system of adjustable flue gas reflux volume |
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