CN207006122U - Low nitrogen gas burner - Google Patents
Low nitrogen gas burner Download PDFInfo
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- CN207006122U CN207006122U CN201720709456.4U CN201720709456U CN207006122U CN 207006122 U CN207006122 U CN 207006122U CN 201720709456 U CN201720709456 U CN 201720709456U CN 207006122 U CN207006122 U CN 207006122U
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- low nitrogen
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- nitrogen gas
- gas burner
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Abstract
The utility model discloses a kind of low nitrogen gas burner, including burner flow valve group, the burner flow valve group is connected with the air inlet of low nitrogen gas burner, and low nitrogen gas burner is fixedly connected in the fire trough for extending into trial furnace by pressing plate, the trial furnace side is connected with air heat exchanger, combustion fan is provided with the top of the air heat exchanger, the heat exchanger side is connected with air-introduced machine by pipeline, and air-introduced machine is connected by pipeline with chimney.In the utility model, pass through the combustion system of change burning device, adjust burner structure and using flue gas recirculating technique control hearth combustion atmosphere, effectively dexterously by completely burned and appropriate flame temperature, appropriate oxygen content is controlled to be formulated to most preferably, suppress NOx generations, boiler export initial flue gas discharge value reaches≤30mg/m3 low nitrogen burning effects after burning, reduces input of the user to flue gas denitrification equipment, entreprise cost is reduced, at the same it is environmental.
Description
Technical field
It the utility model is related to and be related to a kind of burner, be especially applicable in industrial production nitrogen oxidation after a kind of burning
Thing concentration of emission≤30mg/m3 low nitrogen gas burner.
Background technology
NOx is one of major pollutants of air, can form nitric acid rain after being dissolved in water, huge harm is caused to environment,
Cause serious economic loss.NOx emission value is high in domestic existing gas burner fume emission, and most of enterprise relies on
Follow-up denitrating flue gas go to reduce NOx discharge, this processing method increases the production cost of enterprise, and external low nitrogen fires
Burner is expensive, inconvenient after sale, seriously governs domestic gas burner user.Therefore the low nitrogen fuel gas buring of independent research
Device is imperative.
Most harsh boiler discharged nitrous oxides standard is formally implemented on April 1st, 2017 in Beijing, it is desired to newly-built
Boiler discharged nitrous oxides be less than 30 milligrams, boiler discharged nitrous oxides be less than 80 milligrams.Also will successively in other cities
Implement most harsh discharged nitrous oxides standard.So for most gas fired-boiler owner in the market, meaning
Super low NO must be replaced with by, and could meet emission request.
Consider China's present situation, low-NO_x combustion technology has wide application space in the recent period, but market has been put into
Performance of the gas burner in terms of NOx emission is reduced it is unsatisfactory.According to the principle of NO_x formation, flame temperature is reduced
Degree, reduction oxygen content are to suppress basic caused by nitrogen oxides, but this is again relative with completely burned, so seeking new burning side
Formula, make fuel completely burned, and control appropriate flame temperature, appropriate oxygen content, so that generated in combustion process
It is the key of low NO research that NOx content is minimum.
Utility model content
The purpose of this utility model is and a kind of low nitrogen combustion gas combustion proposed in order to solve shortcoming present in prior art
Burner.
To achieve these goals, the utility model employs following technical scheme：A kind of low nitrogen gas burner, including
Burner flow valve group, the burner flow valve group are connected with the air inlet of low nitrogen gas burner, and low nitrogen fuel gas buring
Device is fixedly connected in the fire trough for extending into trial furnace by pressing plate, and the trial furnace side is connected with air heat exchanger, described
Combustion fan is provided with the top of air heat exchanger, the heat exchanger side is connected with air-introduced machine by pipeline, and air-introduced machine passes through
Pipeline is connected with chimney, and smoke evacuation regulating valve is provided with the pipeline between the air-introduced machine and chimney, and the air-introduced machine also passes through
Pipeline is connected with secondary cycle blower fan, and secondary returning cigarette regulating valve is provided with the pipeline between air-introduced machine and secondary cycle blower fan
With secondary return air regulating valve, the secondary cycle blower fan is connected by pipeline with fire trough, and secondary cycle blower fan and fire trough
Between be provided with secondary cycle cigarette wind measuring point and secondary cycle cigarette wind regulating valve on the pipeline that connects, the air heat exchanger passes through
Pipeline is connected with low nitrogen gas burner, is provided with the pipeline connected between the air heat exchanger and low nitrogen gas burner
One cycle blower fan, cigarette regulating valve and one cycle cigarette wind measuring point are once returned, and one cycle blower fan and one cycle cigarette wind are surveyed
Point is positioned at the both sides for once returning cigarette regulating valve.
As further describing for above-mentioned technical proposal：
The low nitrogen gas burner is a kind of low nitrogen gas burner of fractional combustion, inside low nitrogen gas burner
Structure makes combustion gas and combustion air segmentation mix fractional combustion.
As further describing for above-mentioned technical proposal：
The low nitrogen gas burner is mixed into circulating flue gas in combustion air, to reduce oxygen.
As further describing for above-mentioned technical proposal：
The low nitrogen gas burner is filled with mixed flue gas in fire trough, realizes second-time burning, to ensure that fuel is complete
Burning.
In the utility model, by the combustion system of change burning device, adjust burner structure and followed again using flue gas
Loop technique controls hearth combustion atmosphere, effectively dexterously by completely burned and controls appropriate flame temperature, appropriate oxygen to contain
Amount is formulated to most preferably, suppresses NOx generations, and boiler export initial flue gas discharge value reaches≤30mg/m3 low nitrogen burnings effect after burning
Fruit, reduce input of the user to flue gas denitrification equipment, reduce entreprise cost, at the same it is environmental.
Brief description of the drawings
Fig. 1 is the low nitrogen fuel gas combustion system schematic diagram of the present invention；
Fig. 2 is the low nitrogen gas burner overall structure diagram of the present invention.
Marginal data：
1- fuel gas flow path valve groups；The low nitrogen gas burners of 2-；3- fire troughs；4- trial furnaces；5- air heat exchangers；6- is combustion-supporting
Blower fan；7-chimney；8-smoke evacuation regulating valve；9-secondary returning cigarette regulating valve；10- secondary cycle blower fans；11- secondary return airs are adjusted
Valve；12-air-introduced machine；13 one cycle blower fans；14- once returns cigarette regulating valve；15- secondary cycle cigarette wind measuring points；16- is followed for bis- times
Ring cigarette wind regulating valve；17- one cycle cigarette wind measuring points.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.
Reference picture 1-2, a kind of low nitrogen gas burner, including burner flow valve group 1, burner flow valve group 1 with it is low
The air inlet connection of nitrogen gas burner 2, and low nitrogen gas burner 2 is fixedly connected with the combustion for extending into trial furnace 4 by pressing plate
Burn in road, the side of trial furnace 4 is connected with air heat exchanger 5, and the top of air heat exchanger 5 is provided with combustion fan 6, heat exchanger 5 one
Side is connected with air-introduced machine 12 by pipeline, and air-introduced machine 12 is connected by pipeline with chimney 7, between air-introduced machine 12 and chimney 7
Smoke evacuation regulating valve 8 is provided with pipeline, air-introduced machine 12 is also connected by pipeline with secondary cycle blower fan 10, and air-introduced machine 12 and two
Secondary returning cigarette regulating valve 9 and secondary return air regulating valve 11, secondary cycle blower fan are provided with pipeline between secondary circulating fan 10
10 are connected by pipeline with fire trough 3, and secondary follow is provided with the pipeline connected between secondary cycle blower fan 10 and fire trough 3
Ring cigarette wind measuring point 15 and secondary cycle cigarette wind regulating valve 16, air heat exchanger 5 are connected by pipeline with low nitrogen gas burner 2,
One cycle blower fan 13 is provided with the pipeline connected between air heat exchanger 5 and low nitrogen gas burner 2, once returns cigarette regulation
Valve 14 and one cycle cigarette wind measuring point 17, and one cycle blower fan 13 and one cycle cigarette wind measuring point 17 are adjusted positioned at cigarette is once returned
The both sides of valve 14.
Low nitrogen gas burner 2 is a kind of low nitrogen gas burner of fractional combustion, passes through the low internal junction of nitrogen gas burner 2
Structure makes combustion gas and combustion air segmentation mix fractional combustion, and low nitrogen gas burner 2 is mixed into circulating flue gas in combustion air, to reduce
Partial pressure of oxygen, low nitrogen gas burner 2 are filled with mixed flue gas in fire trough, realize second-time burning, to ensure fuel completely burned.
Flue gas caused by burning has three flow directions after air heat exchanger 5 in trial furnace 4, and a part is sent by air-introduced machine 12
Discharged to chimney 7, Part II is incorporated into combustion-supporting wind pipeline and fire trough 3 through one cycle blower fan 13, and from combustion air
The natural wind of machine 6 is mixed into low nitrogen gas burner 2 and burnt with combustion gas mixing；Part III is mixed by secondary cycle blower fan 10
Return and be assigned in trial furnace 4 into fire trough 3 after appropriate amount air.
Fuel gas flow path valve group 1, including burnt gas valve, instrument etc., be successively after hand valve two series connection safety cut-off valves, one
Electric control valve, pressure gauge, pressure transmitter are set between hand valve and first of stop valve, for detecting gaseous-pressure,
It is that ignitron road is set among two security solenoid valves, igniting flow valve group is soft including igniting hand valve, igniting motor-driven valve, igniting
Pipe, flow pipe nipple etc..
Air-introduced machine 10 extracts the flue gas after burning out, and a part is by one cycle blower fan 13 and from combustion fan 6
Natural wind mixing is passed through low nitrogen gas burner 2, and a part mixes with natural wind is passed through fire trough by secondary cycle blower fan 10
3, unnecessary flue gas is discharged by chimney 7, among trial furnace 4 and air-introduced machine 10, one cycle blower fan 13 export, low nitrogen combustion gas
The entrance of burner 2 is provided with temperature and oxygen content detector, the detection for temperature and oxygen content.
Operation principle：In use, combustion gas is fired by fuel gas flow path valve group 1 into low nitrogen gas burner 2 in trial furnace 4
Burn, the flue gas after burning is introduced combustion-supporting wind pipeline by flue gas by air-introduced machine 10, one cycle blower fan 13, and from combustion fan
6 natural wind is mixed into low nitrogen gas burner 2 and burnt with combustion gas mixing, and after normal operation, the oxygen of circulating flue gas is contained
Amount, temperature, the oxygen content of combustion air, temperature are monitored, and boiler export flue gas is tested using flue gas analyzer, passed through
Combustion air, circulated air frequency converter and flue gas flow valve opening are adjusted to adjust the value of oxygen content in combustion air volume, by this
Burning makes its boiler export initial flue gas discharge value reach the≤super low nitrogen burnings of 30mg/m3.
Claims (4)
1. a kind of low nitrogen gas burner, including burner flow valve group（1）, it is characterised in that the burner flow valve group
（1）With low nitrogen gas burner（2）Air inlet connection, and low nitrogen gas burner（2）It is fixedly connected and is extend into by pressing plate
Trial furnace（4）Fire trough in, the trial furnace（4）Side is connected with air heat exchanger（5）, the air heat exchanger（5）Top
Portion is provided with combustion fan（6）, the heat exchanger（5）Side is connected with air-introduced machine by pipeline（12）, and air-introduced machine（12）It is logical
Piping and chimney（7）Connection, the air-introduced machine（12）With chimney（7）Between pipeline on be provided with smoke evacuation regulating valve（8）, institute
State air-introduced machine（12）Also pass through pipeline and secondary cycle blower fan（10）Connection, and air-introduced machine（12）With secondary cycle blower fan（10）It
Between pipeline on be provided with secondary returning cigarette regulating valve（9）With secondary return air regulating valve（11）, the secondary cycle blower fan（10）It is logical
Piping and fire trough（3）Connection, and secondary cycle blower fan（10）With fire trough（3）Between be provided with the pipeline that connects it is secondary
Circulate cigarette wind measuring point（15）With secondary cycle cigarette wind regulating valve（16）, the air heat exchanger（5）Pass through pipeline and low nitrogen combustion gas
Burner（2）Connection, the air heat exchanger（5）With low nitrogen gas burner（2）Between set once on the pipeline that connects
Circulating fan（13）, once return cigarette regulating valve（14）With one cycle cigarette wind measuring point（17）, and one cycle blower fan（13）With one
Secondary circulation cigarette wind measuring point（17）Positioned at once returning cigarette regulating valve（14）Both sides.
A kind of 2. low nitrogen gas burner according to claim 1, it is characterised in that the low nitrogen gas burner（2）
It is a kind of low nitrogen gas burner of fractional combustion, passes through low nitrogen gas burner（2）Internal structure is segmented combustion gas and combustion air
Mixing-classifying burns.
A kind of 3. low nitrogen gas burner according to claim 1, it is characterised in that the low nitrogen gas burner（2）
Circulating flue gas is mixed into combustion air, to reduce partial pressure of oxygen.
A kind of 4. low nitrogen gas burner according to claim 1, it is characterised in that the low nitrogen gas burner（2）
Mixed flue gas is filled with fire trough, realizes second-time burning, to ensure fuel completely burned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720709456.4U CN207006122U (en) | 2017-06-19 | 2017-06-19 | Low nitrogen gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720709456.4U CN207006122U (en) | 2017-06-19 | 2017-06-19 | Low nitrogen gas burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207006122U true CN207006122U (en) | 2018-02-13 |
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ID=61445807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720709456.4U Active CN207006122U (en) | 2017-06-19 | 2017-06-19 | Low nitrogen gas burner |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680037A (en) * | 2018-05-21 | 2018-10-19 | 北京航天石化技术装备工程有限公司 | A kind of gas organic heat carrier furnace system of efficient minimum discharge |
| CN108758678A (en) * | 2018-08-04 | 2018-11-06 | 陕西大秦环境科技有限公司 | Nitrogen oxides minimum discharge system, discharge energy saver and flue gas waste heat recoverer |
| CN108870383A (en) * | 2018-07-10 | 2018-11-23 | 西安交大思源科技股份有限公司 | A kind of pulverized-coal fired boiler low NOx combustion system |
| CN110307559A (en) * | 2019-07-04 | 2019-10-08 | 江苏江顺精密机电设备有限公司 | A kind of low-nitrogen discharged combustion system of heating furnace |
| CN110763008A (en) * | 2019-09-20 | 2020-02-07 | 沈忠东 | Low-nitrogen combustion method for supporting combustion by primary air mixed oxygen-poor air in combustor |
| CN113587066A (en) * | 2021-08-10 | 2021-11-02 | 岳阳恒盛石化科技有限公司 | Combustion control device and method for gas-fired boiler |
| CZ309654B6 (en) * | 2022-09-08 | 2023-06-14 | ATOMA - tepelná technika, s.r.o. | Recirculation circuit of a combustion device for burning a mixture of natural gas and hydrogen |
-
2017
- 2017-06-19 CN CN201720709456.4U patent/CN207006122U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680037A (en) * | 2018-05-21 | 2018-10-19 | 北京航天石化技术装备工程有限公司 | A kind of gas organic heat carrier furnace system of efficient minimum discharge |
| CN108870383A (en) * | 2018-07-10 | 2018-11-23 | 西安交大思源科技股份有限公司 | A kind of pulverized-coal fired boiler low NOx combustion system |
| CN108758678A (en) * | 2018-08-04 | 2018-11-06 | 陕西大秦环境科技有限公司 | Nitrogen oxides minimum discharge system, discharge energy saver and flue gas waste heat recoverer |
| CN110307559A (en) * | 2019-07-04 | 2019-10-08 | 江苏江顺精密机电设备有限公司 | A kind of low-nitrogen discharged combustion system of heating furnace |
| CN110763008A (en) * | 2019-09-20 | 2020-02-07 | 沈忠东 | Low-nitrogen combustion method for supporting combustion by primary air mixed oxygen-poor air in combustor |
| CN113587066A (en) * | 2021-08-10 | 2021-11-02 | 岳阳恒盛石化科技有限公司 | Combustion control device and method for gas-fired boiler |
| CZ309654B6 (en) * | 2022-09-08 | 2023-06-14 | ATOMA - tepelná technika, s.r.o. | Recirculation circuit of a combustion device for burning a mixture of natural gas and hydrogen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Low nitrogen gas burner Effective date of registration: 20210624 Granted publication date: 20180213 Pledgee: Bank of China Limited Qian'an Branch Pledgor: TANGSHAN JINSHA COMBUSTION HEAT ENERGY Co.,Ltd. Registration number: Y2021990000552 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221111 Granted publication date: 20180213 Pledgee: Bank of China Limited Qian'an Branch Pledgor: TANGSHAN JINSHA COMBUSTION HEAT ENERGY CO.,LTD. Registration number: Y2021990000552 |