CN208186342U - Low NO is recycled in flue gas - Google Patents
Low NO is recycled in flue gas Download PDFInfo
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- CN208186342U CN208186342U CN201820653934.9U CN201820653934U CN208186342U CN 208186342 U CN208186342 U CN 208186342U CN 201820653934 U CN201820653934 U CN 201820653934U CN 208186342 U CN208186342 U CN 208186342U
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- flue gas
- ontology
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Abstract
The utility model discloses recycle low NO in a kind of flue gas, the utility model has structurally reasonable simple, production cost is low, it is easy for installation, it is multiple functional, by the combustion system for changing burner and fire trough, adjust its internal structure and using circulating technology control hearth combustion atmosphere in flue gas, effectively and dexterously by completely burned and control flame temperature appropriate, oxygen content appropriate is formulated to most preferably, NOx is inhibited to generate, boiler export reaches in effluent standard value after burning, realize low nitrogen, the combustion efficiency of flame stabilization, reduce that user is external and flue gas denitrification equipment, reduce entreprise cost, investment reduction, it is good for the environment simultaneously.
Description
Technical field
The utility model relates to technical field of burner, in particular to low NO is recycled in a kind of flue gas.
Background technique
In recent years, China's economic growth is rapid, and energy consumption significantly improves, and thus bring problem of environmental pollution is also increasingly
It is severe.A large amount of nitrogen oxides (NOx) can be generated in combustion process, and serious destruction is caused to ecological environment.Therefore, China
Environmental protection administration to burning generate pollutant emission limitation require it is also higher and higher, for gas fired-boiler NOx discharge standard oneself
It is improved to 30-80mg/Nm3.
Currently, fuel combustion process is all to be completed by burner come tissue in industrial furnace.Burning diffusion skill
Art, i.e. fuel are burnt with combustion air when mixing, and flame holding is good, but need sufficiently large combustion space, temperature field
Unevenly, poor to the heating effect of material, because air/fuel mixes uneven, the pollutant discharge amounts height such as NOx.Burning premix skill
Fuel and oxidant are pre-mixed by art, mainly utilize radiation heat transfer, good to the temperature uniformity of material heating, but fiery
Flame stability is slightly worse, and since flame temperature is higher, the production quantity of NOx is also higher.Flue gas recirculating technique is exactly in boiler
The flue somewhere aperture of tail portion, the small part flue gas return extracted by recirculation blower are re-fed into burner after mixing with air
Into burner hearth.Because containing a large amount of CO2 and N2 in the flue gas of circulation, mixes with air latter aspect and dilute oxygen concentration, separately
On the one hand cold air amount is improved in the case where not increasing oxygen concentration, therefore advantageously reduce flame temperature, extend burning
Reaction time improves efficiency of combustion, restrained effectively the generation of NOx so as to avoid burner hearth localized hyperthermia.
Therefore, the use of flue gas recirculation device can reduce by 20 one 30% NOx emission.But traditional flue gas recirculation
Mode needs to rearrange circulating flue gas pipeline, purchases circulating fan, not only increases investment, and to operational management it is also proposed that
New requirement.
In view of above-mentioned advantage in the prior art or deficiency, it would be highly desirable to provide it is a kind of can not only reduce NOx emission, but also do not need
Circulating flue gas pipeline and circulating fan are added, and can be realized itself high-efficiency tissue air, combustion gas and inner flue gas of the stove and be sufficiently mixed
Low NO is recycled in the flue gas of burning.
Utility model content
The purpose of this utility model is that solve the above-mentioned problems, and provides a kind of interior circulation low nitrogen burning of flue gas
Device.
To solve the above-mentioned problems, the utility model provides a kind of technical solution: a kind of flue gas is interior to recycle low nitrogen burning
Device, including fuel gas inlet, Whirl deposite tank channel, direct current wind channel, low NO ontology, fire exploring hole one, burner mounting flange,
Jet pipe, jet pipeline one, jet pipeline two, inner core are surely fired in fire trough, furnace wall mounting flange, igniter burner, fire exploring hole two, center
Cylinder, cyclone, fire trough flange, fire exploring hole three, castable refractory, backflow flue gas channel and injector；The low NO
The left side upper end fixation of ontology is communicated with a fuel gas inlet；The lower end fixation of the low NO ontology is communicated with Whirl deposite tank
Channel and direct current wind channel；Fire exploring hole one there are two being set on the direct current wind channel of the low NO ontology；The low nitrogen combustion
The rear end face of burner ontology is equipped with igniter burner and fire exploring hole two；A combustion is fixedly connected on the rear end face of the injector
Burn road flange；A burner mounting flange is fixedly connected on the front end face of the low NO ontology；The burner
It is fixed together between mounting flange and fire trough flange by pressing plate and bolt；One is respectively equipped on the injector
Fire trough and furnace wall mounting flange；It is equipped with a center in the chamber of the low NO ontology and surely fires jet pipe；The center
The outer ring of steady combustion jet pipe is respectively provided with one layer of jet pipeline one and jet pipeline two；Between the jet pipeline one and jet pipeline two
Equipped with an inner canister；The front end of the inner canister is equipped with a cyclone；The chamber inner wall of the injector is poured equipped with fire resisting
Material feeding；Fire exploring hole three and backflow flue gas channel are equipped in the injector.
Preferably, the castable refractory is poured by 1500 DEG C of high temperature resistant of castable.
The utility model has the beneficial effects that the utility model have it is structurally reasonable it is simple, production cost is low, easy for installation,
It is multiple functional, by changing the combustion system of burner and fire trough, adjust its internal structure and using circulation skill in flue gas
Art controls hearth combustion atmosphere, effectively and dexterously by completely burned and control flame temperature appropriate, oxygen content tune appropriate
It is fitted on most preferably, NOx is inhibited to generate, boiler export reaches in effluent standard value after burning, realizes the burning effect of low nitrogen, flame stabilization
Fruit, reduces that user is external and flue gas denitrification equipment, reduces entreprise cost, investment reduction is good for the environment simultaneously.
Detailed description of the invention
The present invention is described in detail by the following detailed description and drawings for ease of explanation,.
Fig. 1 is the structure of the main view of the utility model low NO body upper part part.
Fig. 2 is the structure schematic top plan view of the utility model low NO body upper part part.
Fig. 3 is the structural schematic diagram of the utility model low NO ontology rear end face.
Fig. 4 is the structural schematic diagram of the utility model low NO body interior.
Fig. 5 is the modular construction schematic diagram on the utility model injector.
1- fuel gas inlet；2- Whirl deposite tank channel；3- direct current wind channel；4- low NO ontology；5- fire exploring hole one；6- combustion
Burner mounting flange；7- fire trough；8- furnace wall mounting flange；9- igniter burner；10- fire exploring hole two；11- surely fires jet pipe in center；
12- jet pipeline one；13- jet pipeline two；14- inner canister；15- cyclone；16- fire trough flange；17- fire exploring hole three；18-
Castable refractory；19- backflow flue gas channel；20- injector.
Specific embodiment
As shown in Figures 1 to 5, present embodiment uses following technical scheme: a kind of flue gas is interior to recycle low nitrogen burning
Device, including fuel gas inlet 1, Whirl deposite tank channel 2, direct current wind channel 3, low NO ontology 4, fire exploring hole 1, burner installation
Flange 6, fire trough 7, furnace wall mounting flange 8, igniter burner 9, fire exploring hole 2 10, center surely fire jet pipe 11, jet pipeline 1,
Jet pipeline 2 13, inner canister 14, cyclone 15, fire trough flange 16, fire exploring hole 3 17, castable refractory 18, backflow flue gas
Channel 19 and injector 20；The left side upper end fixation of the low NO ontology 4 is communicated with a fuel gas inlet 1；It is described low
The lower end fixation of nitrogen burner body 4 is communicated with Whirl deposite tank channel 2 and direct current wind channel 3；The low NO ontology 4 it is straight
Fire exploring hole 1 there are two being set on stream wind channel；The rear end face of the low NO ontology 4 is equipped with igniter burner 9 and visits fire
Hole 2 10；A fire trough flange 16 is fixedly connected on the rear end face of the injector 20；The low NO ontology 4
A burner mounting flange 6 is fixedly connected on front end face；Lead between the burner mounting flange 6 and fire trough flange 16
It crosses pressing plate and bolt is fixed together；A fire trough 7 and furnace wall mounting flange 8 are respectively equipped on the injector 20；
It is equipped with a center in the chamber of the low NO ontology 4 and surely fires jet pipe 11；Surely fire the outer ring of jet pipe 11 in the center
It is respectively provided with one layer of jet pipeline 1 and jet pipeline 2 13；One is equipped between the jet pipeline 1 and jet pipeline 2 13
A inner canister 14；The front end of the inner canister 14 is equipped with a cyclone 15；The chamber inner wall of the injector 20 is equipped with fire resisting
Castable 18；Fire exploring hole 3 17 and backflow flue gas channel 19 are equipped in the injector 20.
Wherein, the castable refractory 18 is poured by 1500 DEG C of high temperature resistant of castable.
The use state of the utility model are as follows: the utility model burner utilizes venturi injection principle, through blast main road
The Whirl deposite tank distributed directly participates in the rotary combustion of internal combustion gas, and direct current wind is sent into injector via air duct, due to
Air at this time contains biggish kinetic energy, momentum-exchange occurs with the gas of injector tail portion, and enter mixing section together, is drawing
Emitter proparea forms a negative pressuren zone, and the flue gas in furnace enters injector tail portion by channel, blends with combustion air, using drawing
Emitter sprays into burner hearth, and diffusion high-temperature and low-oxygen combustion is formed in furnace with the fuel of blast tube injection.
By bernoulli equation it is found that in the case where geopotential energy is constant, kinetic energy and the mutual inversion of phases of pressure energy, so air passes through
Pressure energy is converted to kinetic energy when crossing the throat in scaling channel, forms negative pressuren zone herein.Since there are a wing passage and burner hearth in throat
Connection, therefore when combustion air is by that can roll up a large amount of flue gas of suction, the compression that nozzle can in this way sprayed when scaling channel throat
The air-flow that gas is induced with it is sufficiently mixed, and guarantees that combustion air is just diluted to lower oxygen content before combustion.With
Oxygen content is lower and lower in burner hearth, and flame high-temperature region is deviated to burner, and flame gradually shortens, and finally makes combustion gas in combustion chamber
The burning for completing high-temperature low-oxygen realizes low NOx discharge, is up to state standards.
The basic principles and main features of the present invention and the advantages of the present invention, current row has been shown and described above
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention, the utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (2)
1. recycling low NO in a kind of flue gas, it is characterised in that: including fuel gas inlet (1), Whirl deposite tank channel (2), direct current
Wind channel (3), low NO ontology (4), fire exploring hole one (5), burner mounting flange (6), fire trough (7), furnace wall installation
Jet pipe (11), jet pipeline one (12), jet pipeline two are surely fired in flange (8), igniter burner (9), fire exploring hole two (10), center
(13), inner canister (14), cyclone (15), fire trough flange (16), fire exploring hole three (17), castable refractory (18), reflux cigarette
Gas channel (19) and injector (20)；
The left side upper end fixation of the low NO ontology (4) is communicated with a fuel gas inlet (1)；
The lower end fixation of the low NO ontology (4) is communicated with Whirl deposite tank channel (2) and direct current wind channel (3)；
Fire exploring hole one (5) there are two being set on the direct current wind channel of the low NO ontology (4)；
The rear end of the low NO ontology (4) is equipped with igniter burner (9) and fire exploring hole two (10)；
A fire trough flange (16) is fixedly connected on the rear end face of the injector (20)；
A burner mounting flange (6) is fixedly connected on the front end face of the low NO ontology (4)；
It is fixed together between the burner mounting flange (6) and fire trough flange (16) by pressing plate and bolt；
A fire trough (7) and furnace wall mounting flange (8) are respectively equipped on the injector (20)；
It is equipped with a center in the chamber of the low NO ontology (4) and surely fires jet pipe (11)；
The outer ring that jet pipe (11) is surely fired at the center is equipped with jet pipeline one (12) and jet pipeline two (13)；
An inner canister (14) is equipped between the jet pipeline one (12) and jet pipeline two (13)；
The front end of the inner canister (14) is equipped with a cyclone (15)；
The chamber inner wall of the injector (20) is equipped with castable refractory (18)；
Fire exploring hole three (17) and backflow flue gas channel (19) are equipped in the injector (20).
2. recycling low NO in a kind of flue gas according to claim 1, it is characterised in that: the castable refractory
(18) it is poured by 1500 DEG C of high temperature resistant of castable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820653934.9U CN208186342U (en) | 2018-05-04 | 2018-05-04 | Low NO is recycled in flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820653934.9U CN208186342U (en) | 2018-05-04 | 2018-05-04 | Low NO is recycled in flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208186342U true CN208186342U (en) | 2018-12-04 |
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ID=64432404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820653934.9U Active CN208186342U (en) | 2018-05-04 | 2018-05-04 | Low NO is recycled in flue gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN208186342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984501A (en) * | 2021-02-23 | 2021-06-18 | 河南省锅炉压力容器安全检测研究院 | Low-nitrogen combustion process for gas-fired boiler |
-
2018
- 2018-05-04 CN CN201820653934.9U patent/CN208186342U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984501A (en) * | 2021-02-23 | 2021-06-18 | 河南省锅炉压力容器安全检测研究院 | Low-nitrogen combustion process for gas-fired boiler |
| CN112984501B (en) * | 2021-02-23 | 2024-02-20 | 河南省锅炉压力容器安全检测研究院 | Low-nitrogen combustion process of gas boiler |
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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 |
Denomination of utility model: Flue gas internal circulation low nitrogen burner Effective date of registration: 20210624 Granted publication date: 20181204 Pledgee: Bank of China Limited Qian'an Branch Pledgor: TANGSHAN JINSHA COMBUSTION HEAT ENERGY Co.,Ltd. Registration number: Y2021990000552 |
|
| PE01 | Entry into force 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: 20181204 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 |