CN205504984U - Gas recirculation low NOx burner in gas injection type stove - Google Patents
Gas recirculation low NOx burner in gas injection type stove Download PDFInfo
- Publication number
- CN205504984U CN205504984U CN201620270780.6U CN201620270780U CN205504984U CN 205504984 U CN205504984 U CN 205504984U CN 201620270780 U CN201620270780 U CN 201620270780U CN 205504984 U CN205504984 U CN 205504984U
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- air
- gas
- injector
- combustion
- flue gas
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Abstract
The utility model discloses a gas recirculation low NOx burner in gas injection type stove. This combustor comprises the fuel gas jetting device at rear portion, the combustion -supporting wind device and the anterior ejector device at middle part, fuel gas jetting device includes the gaseous ring to and a plurality of air guns of setting on the gaseous ring lateral surface, combustion -supporting wind device includes the air inlet adjusting the bezel of two upper and lower settings, the ejector device includes that the ejector is able to bear or endure firebrick, and the resistant firebrick of ejector goes up equipartition round flue gas and enters the mouth, flue gas entry and the inside intercommunication of furnace, the resistant firebrick's of ejector inboard is equipped with the ejector sealing ring, the one side and the flue gas entry intercommunication of ejector sealing ring, the opposite side forms confined space with outer loop air gun shower nozzle, and the front end of outer loop air gun shower nozzle inserts in the ejector sealing ring. The utility model discloses in, improved in the stove recirculated flue gas 's phegmal reflux again, greatly reduced the nitrogen oxide who produces during the burning, reduced nitrogen oxide's emission, avoid environmental pollution.
Description
Technical field
This utility model relates to industrial furnace field of combustion technology, particularly relates to a kind of combustion gas injection type low nitrogen of inner flue gas of the stove recirculation
Burner.
Background technology
Burner is the parts that mainly comprise of industrial furnace combustion apparatus, and the NOx generated in combustion process causes environmental pollution
One of principal element, 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, fires for burning gases
Material controls NOx and generates the NOx reduction generating or having generated mainly controlling thermal NO x and fuel type NOx.Temperature
Spending the generation to thermal NO x and have decisive role, different burners produces different calorific intensity distributions in combustor,
Different calorific intensity distributions produce different Temperature Distribution, therefore design a novel burner make its can meet fuel fire and
The needs of burning can reduce again the generation of NOx and become the key realizing low NOx drainage.
Existing industrial gas furnace flue gas recirculation is to send in stove by flue gas, and structure complicates, and is using difficulty of catching fire
Fuel time, and flame holding low by furnace temperature is limited, thus can affect reduce NOx effect, it is impossible to meet phase
Close the requirement of environmental protection standard.
Currently used low NOx combusting technology mainly has three kinds: the first is air staged combustion technology, and it makes combustion air divide
Flow to set up the first combustion zone of 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, the oxygen utilizing the first combustion zone superfluous enters
Row burning；The third is flue gas recirculation combustion technology, is sent into by part low-temperature flue gas in stove, because flue gas absorbs heat and dilutes oxygen
Concentration, reduces partial combustion temperature and forms local reduction atmosphere, thus reducing the generation of NOx.Existing three kinds of low NOx
All there is the problem of localized hyperthermia and/or combustion instability in combustion technology, therefore, designs the low NOx of a kind of applicable commercial Application
Burner has great importance.
Utility model content
This utility model provides a kind of combustion gas injection type inner flue gas of the stove recirculation low NO, overcomes existing burner NOx
Discharge capacity is big, and in stove, flue gas recycled capacity of returns is low, 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 combustion gas injection type inner flue gas of the stove recirculation low NO, it is characterised in that: this burner is by the fuel gas injection at rear portion
The injector device composition of device, the combustion air device at middle part and front portion, wherein said fuel gas ejecting device includes compression ring, and
The multiple air guns being arranged on compression ring lateral surface, described air gun is connected with compression ring by pipeline；Described combustion air device includes two
Air inlet adjustment baffle plate setting up and down, combustion air enters in air distribution body by air inlet adjustment baffle plate, the outlet air end peace of described air distribution body
Dress cyclone and injector device；Described injector device includes that injector refractory brick, described injector refractory brick are arranged on body of heater
On, on injector refractory brick, a uniform circle smoke inlet, connects inside described smoke inlet and burner hearth, injector refractory brick interior
Side is provided with injector sealing ring, and described injector sealing ring is arranged on the surface of smoke inlet, the side of injector sealing ring and cigarette
Gas entrance connects, and opposite side is formed with outer shroud air gun shower nozzle and seals space, and the rear end of described outer shroud air gun shower nozzle is connected with air gun,
The front end of outer shroud air gun shower nozzle is inserted in injector sealing ring.
Described burner also includes the central gas gun sprayer being arranged on middle part, and described central gas gun sprayer is through cyclone and rear end
Gas pipeline connects.
The pipeline that described air gun is connected with compression ring is provided with spray gun air intake valve.
Described air inlet adjustment baffle plate is arranged at burner air intake vent, and air inlet adjustment baffle plate realizes upset by the handle at rear.
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 mainly by fuel staging gun system, injector, join
Wind body forms.Main fuel enters compression ring through fuel gas inlet, and in compression ring, each gas gun, center air gun fuel are given in uniform distribution
Source is independent to introduce from gas pipeline, and combustion air is entered by combustion gas air inlet adjustment baffle plate, respectively enters centre wind cavity and rotation
Stream devices etc., eject and combustion gas diffusive mixing from combustion head.Outer shroud gas gun shower nozzle inserts in injector sealing ring, passes through
The high-speed jet that fuel gas injection produces produces certain back pressure, then driven the flue gas in stove by the smoke inlet of injector refractory brick
Enter injector sealing ring so that combustion gas premixes in a large number with inner flue gas of the stove, from sealing ring, eject one flue gas through premix
Gas mixed with fuel so that fuel is sufficiently mixed with noble gas, also makes mixed gas heating value be reduced.
By above means, gas burning velocity in stove, temperature are reduced, thus be substantially reduced the generation of NOx.
Accompanying drawing explanation
Fig. 1 is that the structure master of a kind of combustion gas injection type inner flue gas of the stove recirculation low NO that this utility model embodiment provides regards
Figure；
Fig. 2 is the side view of a kind of combustion gas injection type inner flue gas of the stove recirculation low NO 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,
Obviously, described embodiment is only a part of embodiment of the present utility model rather than whole embodiments.Based on this reality
By the embodiment in novel, the every other reality that those of ordinary skill in the art are obtained under not making creative work premise
Execute example, broadly fall into the scope of this utility model protection.
As shown in Figure 1-2, a kind of combustion gas injection type inner flue gas of the stove recirculation low NO proposed for this utility model embodiment,
This burner is made up of, wherein the injector device 3 of the fuel gas ejecting device 1 at rear portion, the combustion air device 2 at middle part and front portion
Fuel gas ejecting device 1 includes compression ring 4, and is arranged on the multiple air guns 5 on compression ring 4 lateral surface, and air gun 5 is by pipeline and gas
Ring 4 connects；Combustion air device 2 includes two air inlet adjustment baffle plates 6 setting up and down, and combustion air passes through air inlet adjustment baffle plate 6
Entering in air distribution body 7, the outlet air end of air distribution body 7 installs cyclone 8 and injector device 3；Injector device 3 includes injection
Device refractory brick 9, injector refractory brick 9 is arranged on body of heater, a uniform circle smoke inlet 10, flue gas on injector refractory brick 9
Entrance 10 is internal with burner hearth to be connected, and the inner side of injector refractory brick 9 is provided with injector sealing ring 11, and injector sealing ring 11 is pacified
Being contained in the surface of smoke inlet 10, the side of injector sealing ring 11 connects with smoke inlet 10, and opposite side sprays with outer shroud air gun
12 are formed and seal spaces, and the rear end of outer shroud air gun shower nozzle 12 is connected with air gun 5, and the front end insertion of outer shroud air gun shower nozzle 12 is drawn
In emitter sealing ring 11.
Preferably, burner also includes the central gas gun sprayer 13 being arranged on middle part, and central gas gun sprayer 13 is through cyclone 8
It is connected with the gas pipeline of rear end.
Preferably, the pipeline that air gun 5 is connected with compression ring 4 is provided with spray gun air intake valve 14.
Preferably, air inlet adjustment baffle plate 6 is arranged at burner air intake vent, and air inlet adjustment baffle plate 6 is realized by the handle at rear
Upset.
The function declaration of each structure above-mentioned to the present invention is as follows below in conjunction with the accompanying drawings:
Air distribution body 7: for the shell body of burner, walk the air distribution of whole burner；
Compression ring 4: fuel uses fractional combustion, needs many spray guns, then fuel gas inlet uses unified compression ring distribution combustion gas, each
Gas gun takes gas from compression ring, and combustion gas distributed uniform pressure is uniform；
Air gun 5: each fuel gas injection rifle after fuel staging；
Spray gun air intake valve 14 a: hand stop valve before each fuel gas injection rifle, can realize gas gun and dismantle online, also
Can realize turning off, thus realize regulating the effect of load；
Air inlet adjustment baffle plate 6: the regulation panel turnover mechanism of burner air intake vent, scalable combustion air amount size；
Injector refractory brick 9: the refractory brick being arranged on body of heater, the uniform circle annular mouth of this refractory brick, negotiable flue gas；
Smoke inlet 10: perforate on refractory brick, and arrange a circle, it being used for the flue gas that circulates, this entrance is overall exposed at stove burner hearth
In；
Outer shroud air gun shower nozzle 12: the shower nozzle on Fuel lance, this shower nozzle injection high-speed fuel gas, meanwhile, the jet priming cigarette of combustion gas
Flue gas outside gas entrance enters sealing ring, so that combustion gas mixes with flue gas；
Central gas gun sprayer 13: the central gas gun sprayer in fuel staging, this shower nozzle is used for producing flame of centre, ensures burner
Stable burning, and play the purpose that flame of centre is stable.
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 mainly by fuel staging gun system, injector, join
Wind body forms.Main fuel enters compression ring through fuel gas inlet, and in compression ring, each gas gun, center air gun fuel are given in uniform distribution
Source is independent to introduce from gas pipeline, and combustion air is entered by combustion gas air inlet adjustment baffle plate, respectively enters centre wind cavity and rotation
Stream devices etc., eject and combustion gas diffusive mixing from combustion head.Outer shroud gas gun shower nozzle inserts in injector sealing ring, passes through
The high-speed jet that fuel gas injection produces produces certain back pressure, then driven the flue gas in stove by the smoke inlet of injector refractory brick
Enter injector sealing ring so that combustion gas premixes in a large number with inner flue gas of the stove, from sealing ring, eject one flue gas through premix
Gas mixed with fuel so that fuel is sufficiently mixed with noble gas, also makes mixed gas heating value be reduced.
By above means, gas burning velocity in stove, temperature are reduced, thus be substantially reduced the generation of NOx.
The above, only this utility model preferably detailed description of the invention, but protection domain of the present utility model is not limited to
This, any those familiar with the art in the technical scope that this utility model discloses, the change that can readily occur in or
Replace, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be wanted with right
The protection domain seeking book is as the criterion.
Claims (4)
1. a combustion gas injection type inner flue gas of the stove recirculation low NO, it is characterised in that: this burner is by the gas injection at rear portion
The injector device composition of injection device, the combustion air device at middle part and front portion, wherein said fuel gas ejecting device includes compression ring, with
And the multiple air guns being arranged on compression ring lateral surface, described air gun is connected with compression ring by pipeline；Described combustion air device includes two
Individual air inlet adjustment baffle plate setting up and down, combustion air enters in air distribution body by air inlet adjustment baffle plate, the outlet air end of described air distribution body
Cyclone and injector device are installed；Described injector device includes that injector refractory brick, described injector refractory brick are arranged on stove
On body, a uniform circle smoke inlet on injector refractory brick, described smoke inlet is internal with burner hearth to be connected, injector refractory brick
Inner side is provided with injector sealing ring, and described injector sealing ring is arranged on the surface of smoke inlet, the side of injector sealing ring with
Smoke inlet connects, and opposite side is formed with outer shroud air gun shower nozzle and seals space, and the rear end of described outer shroud air gun shower nozzle is connected with air gun,
The front end of outer shroud air gun shower nozzle is inserted in injector sealing ring.
2. combustion gas injection type inner flue gas of the stove recirculation low NO as claimed in claim 1, it is characterised in that: described burning
Device also includes the central gas gun sprayer being arranged on middle part, and described central gas gun sprayer is connected through cyclone with the gas pipeline of rear end.
3. combustion gas injection type inner flue gas of the stove recirculation low NO as claimed in claim 1, it is characterised in that: described air gun
The pipeline being connected with compression ring is provided with spray gun air intake valve.
4. combustion gas injection type inner flue gas of the stove recirculation low NO as claimed in claim 1, it is characterised in that: described air intake
Controllable register is arranged at burner air intake vent, and air inlet adjustment baffle plate realizes upset by the handle at rear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620270780.6U CN205504984U (en) | 2016-04-01 | 2016-04-01 | Gas recirculation low NOx burner in gas injection type stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620270780.6U CN205504984U (en) | 2016-04-01 | 2016-04-01 | Gas recirculation low NOx burner in gas injection type stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205504984U true CN205504984U (en) | 2016-08-24 |
Family
ID=56735171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620270780.6U Expired - Fee Related CN205504984U (en) | 2016-04-01 | 2016-04-01 | Gas recirculation low NOx burner in gas injection type stove |
Country Status (1)
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| CN (1) | CN205504984U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570890A (en) * | 2016-03-15 | 2016-05-11 | 河南方圆工业炉设计制造有限公司 | Hot flue gas self-circulation type ultra-low NOx combustor |
| CN107062214A (en) * | 2017-05-10 | 2017-08-18 | 北京航天石化技术装备工程有限公司 | A kind of indifferent gas half premixes the ultralow NOx gas burners of classification |
| CN107655006A (en) * | 2017-11-27 | 2018-02-02 | 岳阳钟鼎热工电磁科技有限公司 | Suitable for styrene vapor superheater Flat flame ultra-low NOx emission burner |
| CN108662576A (en) * | 2018-06-13 | 2018-10-16 | 上海华之邦科技股份有限公司 | A kind of automatic internal-circulation type low nitrogen burning system of flue gas |
| CN108758623A (en) * | 2018-05-08 | 2018-11-06 | 清华大学 | A kind of oil-gas two-way burner |
| CN110440258A (en) * | 2019-08-19 | 2019-11-12 | 河北德奥环保科技有限公司 | A kind of ultralow nitrogen Split type combustion device and burning boiler |
-
2016
- 2016-04-01 CN CN201620270780.6U patent/CN205504984U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570890A (en) * | 2016-03-15 | 2016-05-11 | 河南方圆工业炉设计制造有限公司 | Hot flue gas self-circulation type ultra-low NOx combustor |
| CN107062214A (en) * | 2017-05-10 | 2017-08-18 | 北京航天石化技术装备工程有限公司 | A kind of indifferent gas half premixes the ultralow NOx gas burners of classification |
| CN107655006A (en) * | 2017-11-27 | 2018-02-02 | 岳阳钟鼎热工电磁科技有限公司 | Suitable for styrene vapor superheater Flat flame ultra-low NOx emission burner |
| CN107655006B (en) * | 2017-11-27 | 2023-12-08 | 岳阳钟鼎热工电磁科技有限公司 | Flat flame ultralow NOx emission combustor suitable for styrene steam superheating furnace |
| CN108758623A (en) * | 2018-05-08 | 2018-11-06 | 清华大学 | A kind of oil-gas two-way burner |
| CN108758623B (en) * | 2018-05-08 | 2019-09-20 | 清华大学 | A kind of oil-gas two-way burner |
| CN108662576A (en) * | 2018-06-13 | 2018-10-16 | 上海华之邦科技股份有限公司 | A kind of automatic internal-circulation type low nitrogen burning system of flue gas |
| CN110440258A (en) * | 2019-08-19 | 2019-11-12 | 河北德奥环保科技有限公司 | A kind of ultralow nitrogen Split type combustion device and burning boiler |
| CN110440258B (en) * | 2019-08-19 | 2024-03-08 | 河北德奥环保科技有限公司 | Ultralow-nitrogen split type combustor and combustion boiler |
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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: 20160824 Termination date: 20180401 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |